FAQ about SPEAKER

What is an active board? A speaker active board usually refers to the electronic control board in an active speaker, also known as the amplifier board or power board of an active speaker. This board integrates the amplifier (power amplifier) ​​circuit of the speaker, which is responsible for amplifying the audio signal to drive the speaker unit of the speaker to produce sound. What models of active boards does Sinbosen have? How do you usually connect the active board to the PC to use software? Hardware connection Determine the interface: First, confirm the audio output interface type of your speaker active board and computer. Common interfaces include 3.5mm audio interface, RCA interface, optical fiber interface, USB interface, etc. Prepare the connection cable: Prepare the corresponding connection cable according to the interface type of the speaker active board and computer. For example, if the speaker active board has an RCA interface and the computer has a 3.5mm audio interface, you need a 3.5mm to RCA audio cable. Connect the speaker: Plug one end of the audio cable into the audio output port of the computer and the other end into the input port of the speaker active board. Connect the power supply: Make sure the speaker active board is connected to the power supply and turn on the power switch.Software settings Audio output settings: In Windows, right-click the volume icon on the taskbar and select "Sound Settings". In the "Output" section, select your speaker as the default device. If there are multiple output devices, make sure the correct device is selected. Volume control: In the volume mixer, make sure the volume of the speaker is not muted and adjusted to the appropriate volume level. Driver update: If the speaker power board is a USB interface, make sure the computer has the latest driver installed. You can check and update the driver through the device manager. Test audio: Play a piece of audio or music to check whether the speaker can play the sound normally. If there is no sound, check whether the connection is correct, whether the volume is turned up, and whether the computer audio settings are correct. Advanced settings (if necessary): In some advanced audio settings, you can adjust the channel configuration, sound effect settings, etc. of the speaker. Use third-party software (if necessary): Some speakers may require specific software to adjust settings or optimize sound quality. Please install and use these software according to the speaker manual or manufacturer's recommendations. How to connect the Sinbosen active board to the PC?

What is a point source speaker? A point source speaker, also known as a point sound source speaker, refers to a speaker that radiates sound waves in a point sound source manner. Features of point source speakers: Directivity: Point source speakers have a clear radiation direction, and the sound radiates from a specific point to the surrounding space. This directivity allows point source speakers to more accurately control the direction and range of sound propagation. Focus: Since the sound radiates from a point source, point source speakers usually have a higher energy density and can better concentrate the sound in a specific area. This makes point source speakers very useful in occasions that require specific sound positioning or local sound field enhancement, such as theaters, concert halls, and conference rooms. Clear positioning: Due to the clear radiation direction of the point sound source, the listener can perceive the source location of the sound relatively accurately. This is very important for music performances, voice transmission, and gaming experience. Advantages of point source speakers Realistic sound restoration: The point source speaker design ensures that the sound is emitted from a single point source through precise acoustic calculation and optimization, reducing the distortion during sound propagation, making the sound more natural and realistic. Wide sound field: Through precise acoustic design and physical structure, the point source speaker can achieve uniform diffusion of sound, so that the audience can get a consistent listening experience no matter where they are. This design concept not only improves the performance of the sound system, but also greatly enhances the audience's sense of immersion. Compact structure and easy installation: The point source speaker effectively reduces the size and weight of the sound system, making it more beautiful in appearance, and also convenient for handling and installation. This undoubtedly facilitates the popularization and promotion of the sound system. High performance and flexibility: The new point source speaker provides a reliable, lightweight and compact design, and provides a wide range of hanging options for maximum flexibility. In order to meet the needs of more customers, Sinbosen has recently launched three point source speakers: CX-12 Two-way 12-inch ferrite bass unit 44-core tweeter compression driver Unit composition 12″×1(BASS)φ44mm×1(TREBLE) Frequency response (-3dB) 90Hz-20kHz Sensitivity 97dB Rated power (RMS) 450W Rated impedance 8Ω Wide directivity horn, even and wide sound field coverage Multi-hanging point design, can be flexibly suspended according to venue requirements High-sensitivity unit design, easy and natural singing Delicate and natural timbre, outstanding vocal performance CX-15 Customized 15″220 magnet bass 75mm voice coil Customized tweeter 75 core high frequency compression driver Frequency response (±3 dB) 55Hz - 18KHz Rated power: 500W (AES) 1000W (PEAK) Sensitivity (1w /1m) 1:100dB Rated impedance: 8 ohms Maximum SPL output: 124dB (peak: 130dB) Coverage angle: 80° x 50° (H x V) Connector: 2 Neutrik Speakon NL4MP Full frequency: 1﹢1﹣Link thro’2﹢2﹣ F-15+ Customized 15″220 magnet bass 75mm voice coil Customized tweeter 75 core high frequency compression driver Frequency response (±3 dB) 55Hz - 18KHz Rated power: 500W (AES) 1000W (PEAK) Sensitivity (1w /1m) 1:100dB Rated impedance: 8 ohms Maximum SPL output: 124dB (peak: 130dB) Coverage angle: 80° x 50° (H x V) Connector: 2 Neutrik Speakon NL4MP Full frequency: 1﹢1﹣Link thro’2﹢2﹣

In order to improve the user experience of speakers, ensure the performance and lifespan of speakers, and adapt to different environments and needs. Many customers will purchase some corresponding speaker accessories when purchasing speakers to ensure the performance, safety, and convenience of the speaker system.Take the KA-3 dual 12-inch line array speaker as an example, do you know what accessories the speaker has? 1. Bumper Hanging and securing speakers: The field frame is designed to support and secure line array speakers, allowing them to be safely and securely suspended in the air or on the ground. Quick installation: Field frames are typically equipped with quick locking and releasing mechanisms, making the installation and removal of speakers more efficient and convenient. System expansion: Field frames allow multiple speakers to be combined together to form a larger line array, meeting the sound reinforcement needs of large venues. Angle adjustment: Some field frames are designed with adjustable angles to accommodate different venues and coverage requirements. Increased sound pressure output: Through precise angle adjustments, field frames help increase the sound pressure output of speakers, ensuring a wider coverage area for sound. 1. Bumper Hanging and securing speakers: The field frame is designed to support and secure line array speakers, allowing them to be safely and securely suspended in the air or on the ground. Quick installation: Field frames are typically equipped with quick locking and releasing mechanisms, making the installation and removal of speakers more efficient and convenient. System expansion: Field frames allow multiple speakers to be combined together to form a larger line array, meeting the sound reinforcement needs of large venues. Angle adjustment: Some field frames are designed with adjustable angles to accommodate different venues and coverage requirements. Increased sound pressure output: Through precise angle adjustments, field frames help increase the sound pressure output of speakers, ensuring a wider coverage area for sound. 2. Bumper Flight Case Protecting Speakers: Flight cases safeguard speakers from damage during transport and handling, especially delicate components like trusses that are prone to impacts and scratches during transit. Facilitating Transportation: The sturdy construction and wheeled design of flight cases make it convenient to move and transport the speaker system. Safe Storage: When not in use, flight cases can serve as containers for storing speakers and accessories, ensuring the equipment's safety and cleanliness. Standardization: The design of flight cases typically complies with air transport standards, meaning they can be safely transported as cargo on airplanes. 3.Metal Dolly Easy Movement: Speakers are typically heavy, and the Metal dolly, equipped with wheels, allows for easy maneuvering of the speakers, reducing the physical labor required for manual handling. Protecting Speakers: During movement, the Metal dolly protects the bottom of the speakers from damage due to friction with the ground. Efficiency Improvement: When there is a need for rapid setup or breakdown of the stage sound system, the Metal dolly can increase work efficiency. Terrain Adaptability: The wheels that come with it are usually suitable for various terrains, including different ground conditions both indoors and outdoors. 4.Flight Case Protecting Speakers: The sturdy construction of flight cases shields speakers from physical damage such as impacts, scratches, and drops during transportation. Facilitating Transportation: Flight cases equipped with wheels and handles allow for easy movement of speakers to different locations, reducing the burden of carrying them. Safe Storage: When not in use, flight cases can serve as storage tools to protect speakers from dust, moisture, and other environmental factors. Moisture and Dust Prevention: The enclosed design prevents moisture and dust from entering, safeguarding the equipment inside from damage. 5. Speaker Rain Cover Rain Protection: Rain covers protect speakers from rainwater, preventing damage to internal electronic components due to water ingress. Dust Prevention: When not in use, rain covers can also serve as dust covers, keeping the speakers clean. Protecting Speaker Units: Rain covers safeguard the speaker drivers, extending their lifespan. Portable Design: Some rain covers are designed with handles or straps for easy carrying, allowing users to quickly move speakers to different locations. Outdoor Adaptability: For speakers frequently used outdoors, rain covers are essential accessories, ensuring that speakers can function properly in various weather conditions. Enhanced Safety: In rainy or damp environments, using rain covers can enhance the safety of the speaker system, avoiding short circuits or electrocution risks due to moisture. KA-3-TILT Mainly used to adjust the angle of the KA-3 speaker and KA28 subwoofer when stacked. It is an accessory designed specifically for the KA-3 speaker, mainly used for angle adjustment during stacking installation. It is suitable for various occasions that require precise sound coverage, including large-scale performances, multi-functional event venues and fixed installation scenarios. These are some important accessories for professional stage speakers, which can be used in conjunction with the speakers. If you have other needs, you can also contact Sinbosen.

What are the characteristics of the paper cone of the speaker? The paper cone of the speaker is generally made of plant fiber materials. As the main component of the speaker, the paper cone has the function of assisting the speaker voice coil to radiate sound, which largely determines the sound quality of the speaker.The paper cone of the speaker, also known as the sound cone, is a common type of diaphragm. Although it is called a paper cone, there are many kinds of materials used, which can basically be divided into two categories: natural and artificial materials. No matter what material is used for the paper cone of the speaker, it must meet a basic principle of using the paper cone, which is light weight, good rigidity and not easy to deform. The main advantage of the paper cone is that the internal fibers are intertwined with each other, and in the process of sound transmission, the energy absorption is faster, the damping characteristics are more ideal, the sound is natural and smooth, and there is no distinctive part, which conforms to the taste of the public. However, due to the characteristics of its material, it is more sensitive to temperature and humidity, and changes in the environment may affect the sound of the speaker. Some of the main factors that affect the life of the paper cone: Environmental conditions: Humidity or extreme temperature environments may cause the paper cone material to age or deform, thus shortening its life. Frequency and volume of use: Long-term high-volume use will increase the burden on the paper cone and accelerate its wear. Material quality: High-quality paper cones are generally more durable and have a longer life. Why you need to replace the paper cone of your speaker: Material aging: Over time, the paper cone material may become brittle, crack or deform, resulting in a decrease in sound quality. Physical damage: The paper cone may be damaged by impact, excessive use or other physical factors. Sound quality issues: Aging or damaged paper cones may cause sound quality distortion or loss of original sound performance Tools and materials required Replacement cone (make sure it matches the original) Hot melt glue gun or glue Screwdriver Soldering tool (if you need to replace the voice coil) Cleaning agent (for cleaning up the old glue residue) Brush or soft cloth To disassemble the speaker: Turn off the speaker power and disconnect all connections. Use a screwdriver to disassemble the speaker housing and remove the speaker unit from the speaker. Remove the old cone: If there is a dust cover on the speaker, carefully remove the dust cover first. Use a blade or tool to carefully peel off the connection between the old cone and the bracket (or basin stand). If there is glue or welding points between the cone and the voice coil, handle it carefully. Clean up the residue: Use a cleaner and a brush to remove the old glue and dust on the speaker bracket and ensure that the surface is clean. Install the new cone: Align the new cone with the bracket to ensure the correct position. Use hot melt glue or suitable glue to fix the cone to the bracket. If the voice coil needs to be replaced, use a welding tool to connect the new voice coil. Restore other parts: If the dust cover was removed, reinstall it after the cone is installed. Make sure all parts are stable and the cone can vibrate freely without obstruction. Test: Reinstall the speaker back into the speaker, connect the power supply and test to ensure that the sound is normal and there is no noise. Final assembly: If the test passes, finally reassemble the speaker housing, making sure all screws are tight. Notes Be careful when handling the cone to avoid damaging the new cone during installation. The glue used should be suitable for the audio equipment to ensure that it does not come loose during vibrations. If you are unsure about the operation, it is recommended to seek the help of a professional technician, especially when it comes to high-end audio equipment.

1. What is SPL? SPL (Sound Pressure Level) refers to the magnitude of the change in air pressure caused by sound waves, and is an important indicator for measuring sound intensity. SPL is usually expressed in decibels (dB), representing the loudness of the sound. 2. Why is SPL important for professional stage speakers? SPL is one of the important parameters to measure speaker performance, especially in professional stage environments. A higher SPL means that the speaker can provide sufficient sound pressure in a larger range to ensure that the audience can hear the sound clearly. This is especially critical for large venues and high noise environments. 3. How to measure SPL? SPL is usually measured using a sound level meter. When measuring, the sound level meter is placed at specified locations, usually multiple points in the audience area, to record the sound pressure level at different locations. The sound level meter converts the sound pressure changes into electrical signals and displays them as decibel values. 4. What is the typical SPL range of professional stage speakers? The SPL range of professional stage speakers is generally between 100 dB and 140 dB. Examples of common speaker types and their SPL ranges are as follows: Conference speakers: 100 dB - 120 dB Small performance speakers: 120 dB - 130 dB Large performance speakers: 130 dB - 140 dB 5. What is the maximum SPL? The maximum SPL refers to the maximum sound pressure level that a speaker can produce without distortion. After the speaker reaches the maximum SPL, further increasing the volume may cause sound distortion and deterioration of sound quality. The maximum SPL is an important indicator to measure the performance and application range of the speaker. 6. How to choose the right SPL speaker? There are several factors to consider when choosing the right SPL speaker: Venue size: Large venues require higher SPL speakers to ensure sound coverage. Event type: Rock concerts, electronic concerts, etc. require high SPL speakers, while conferences or indoor performances do not require too high SPL. Audience size: The more audience, the higher the required SPL. Ambient noise: A noisy environment requires a higher SPL to ensure that the sound is clearly audible. 7. Does SPL have anything to do with speaker power? The power of a speaker is usually correlated with SPL, but it is not the only determining factor. The higher the power, the higher the SPL a speaker can produce. However, factors such as speaker design, drive unit efficiency, and cabinet structure also affect SPL. For example, an efficient drive unit and an optimized cabinet design can produce a higher SPL at a lower power.

What are the main reasons why professional audio speaker units are easily damaged? The main reasons why professional audio speaker units are prone to burning out can be summarized as follows: Overload and over-power driving: This is the most common reason. When a speaker unit is subjected to a signal that exceeds its rated power, it can cause the voice coil to overheat and burn out. Overpowering may come from excessive volume, misuse of amplifiers, or improper use of amplifiers.Poor heat management: Prolonged high-volume use can cause the voice coil temperature to rise. If heat dissipation is poor, the voice coil can overheat and burn out. Professional audio equipment typically has better heat dissipation systems in their design, but still needs to be used reasonably to avoid overheating.Signal distortion: Distorted signals from the amplifier, especially clipping distortion, can cause the voice coil to carry excessive current, leading to heating and burning out. Clipping distortion generates high-frequency components, increasing the burden on the voice coil.Improper audio settings: Incorrect audio settings, such as excessive equalizer settings, can cause certain frequency signals to be too strong, exceeding the speaker unit's capacity and leading to burning out.Impedance mismatch: Mismatched impedance between the speaker and amplifier can reduce power transmission efficiency, potentially causing the voice coil to carry unnecessary high current and increasing the risk of burning out.Improper use of audio crossovers: Improper use of crossover points at the input end of the speaker, unreasonable working frequency range for the speaker, and selecting crossover points with high frequency and low power can overload the speaker unit and easily lead to burning out. When using crossovers, the speaker's working frequency range should be strictly specified, and reasonable frequency points should be selected.Mechanical failures: Damage to mechanical components of the speaker unit, such as the surround and diaphragm, can also cause abnormal operation of the voice coil and lead to burning out. These mechanical failures may be caused by fatigue from long-term use or severe physical impacts.Environmental factors: Environmental factors such as humidity, dust, and high temperatures can also lead to damage to the speaker unit, especially affecting the normal operation of the voice coil and other electronic components. To prevent speaker units from burning out, it is recommended to take the following measures: ▶Ensure that the power configuration of the audio system is reasonable to avoid overloading. ▶Regularly inspect and maintain audio equipment to ensure it is in good working condition. ▶Avoid prolonged high-volume use and ensure a good heat dissipation environment. ▶Use high-quality amplifiers and audio equipment to avoid signal distortion. ▶Ensure impedance matching between speakers and amplifiers. ▶Before use, understand the equipment's instructions and rated parameters, and set up the audio system reasonably.

Heat shrink tubing is a plastic sleeve made of polyolefin that shrinks and deforms to a predetermined size when subjected to heat. It is placed over wires or jumpers and heated with a heat source to completely cover and conform to the surface of the cables. Through this processing method, insulation, waterproofing, and insulation cable characteristics can be achieved, providing protective performance and enhancing appearance. Advantages of heat shrink tubing: High temperature resistance and corrosion resistance: Heat shrink tubing has the characteristics of high temperature resistance and corrosion resistance, which can maintain stability in harsh environments, ensuring the stability and long-term reliability of speaker jumper wires.Prevention of short circuits and electrical faults: Heat shrink tubing can effectively isolate conductive parts, prevent contact between different cables from causing short circuits or other electrical faults, and improve the safety of the speakers.High tensile strength: The surface of the heat shrink tubing is smooth, highly wear-resistant, and has good tensile strength, which can prevent damage to the speaker jumper wires from external pulling or twisting.Environmentally friendly materials: Our heat shrink tubing is made of environmentally friendly materials, non-toxic, odorless, and free of harmful substances, safe to use.Wide range of applications: Heat shrink tubing is suitable for the protection and repair of various speaker jumper wires, meeting the needs of cables of different specifications and shapes, and has strong versatility. How to correctly use heat shrink tubing Choosing the right size: When using heat shrink tubing, it is essential to select the appropriate size to ensure complete coverage of the speaker jumper wires, leaving some extra length to avoid incomplete coverage or being too tight.Preheating and heating: Before installing the heat shrink tubing, you can preheat it with a hairdryer or other heating tools, then slide it over the speaker jumper wires, and use the heating tool again to heat the heat shrink tubing until it tightly fits the cables.Cooling and fixing: After installation, let the heat shrink tubing cool naturally to ensure it is securely fixed on the jumper wires. Avoid pulling or squeezing it forcefully to prevent affecting its effectiveness.Regular inspection: It is recommended to regularly check the status of the speaker jumper wires and heat shrink tubing. If there is any damage or looseness, replace or repair it promptly to maintain the good condition of the speaker cables. Actually, the function of heat shrink tubing is far more than just that. If needed, you can also place your own logo on it, and then use a heat gun to fix and shrink it, which is simple and convenient. Note: Sinbosen speaker cables are not sold separately, they are only provided as a service to customers who purchase speakers.

What is a treble membrane? The speaker treble membrane is an important component in the speaker, which is responsible for producing high-frequency sounds. The treble diaphragm is usually a membrane or a vibrator covered by a membrane. Its vibration generates high-frequency sound waves to complete the distribution and reproduction of sound in various frequency bands in the speaker. The main function of the treble diaphragm is to convert electrical signals into sound, where the treble diaphragm requires smaller mass and higher stiffness in order to vibrate in a high frequency range. These characteristics allow the tweeter membrane to produce clear, bright high-frequency audio effects. Common treble membrane materials include: Silk/silk membrane: Silk membrane is one of the common tweeter materials, which can provide soft and clear sound at high frequencies.Polyester film (plastic film): Polyester film is another common tweeter material that can provide good high-frequency response and sound quality.Ceramic Diaphragm: Ceramic diaphragms provide more accurate and detailed treble performance due to their hardness and rigidity.Aluminum or magnesium alloy membrane: Aluminum or magnesium alloy membrane is used in some high-end speakers because of its light weight and high stiffness, which can provide a wider high-frequency response range.Titanium membrane: Titanium membrane is usually used in some professional audio equipment because of its light weight and high strength, which performs well in the high frequency range. The treble membrane plays a vital role in the speaker or speaker system. It is responsible for reproducing high-frequency audio signals so that the listener can hear the treble parts and details in the music. It is an important part of the speaker. If it burns out after being used for a period of time, don’t worry, because it is a consumable product and can be replaced and inspected in time. The main functions of the treble membrane: Reproduction of high-frequency audio signals: The treble diaphragm is the component of the speaker system responsible for reproducing high-frequency audio signals. It can vibrate to produce high-frequency sound waves, allowing the speaker to emit high-pitched tones that are perceptible to the human ear.Complete audio spectrum: The treble diaphragm works together with a bass unit (such as a woofer or midrange unit) so that the speaker system can cover the entire audio spectrum. The treble membrane is responsible for reproducing the high frequencies in the music, thereby presenting a complete and balanced sound to the listener's ears.Sound quality and detailed performance: The performance of the treble membrane directly affects the sound quality and detailed performance of the speaker. A high-quality treble membrane can accurately reproduce high-frequency details in music, including the treble part of musical instruments, the clarity of vocals, and other high-frequency sound effects.Sound field positioning and sense of space: The treble part plays a key role in sound field positioning and sense of space. Through the high-frequency information reproduced by the treble membrane, the listener can perceive the position and direction of the sound source in space, thus enhancing the immersion and reality of the music.Balance of the speaker system: The treble diaphragm works together with other audio units in the speaker (such as the midrange unit and woofer unit) to coordinate and produce a balanced sound output. A good treble membrane design can ensure the balance and coordination of the entire speaker system in different frequency bands, providing a more natural and realistic music experience.

What do speaker power and sensitivity mean? Power: The power of a speaker refers to the maximum power output it can withstand. Usually expressed in units of watts (W). Higher power means the speaker can produce stronger sound over a wider volume range. When choosing the speaker power suitable for your scene, you need to consider the size and purpose of the venue. Generally speaking, larger performance venues may require higher wattage speakers, while smaller scenes may require lower wattage speakers. Sensitivity: The sensitivity of a speaker refers to the sound level that the speaker can produce when receiving the same input power. It is usually expressed in units of decibels (dB). Higher sensitivity means the speaker can produce higher sound levels with lower input power. When choosing speaker sensitivity, you need to consider the noise level of the venue and the volume of the desired sound. To choose the speaker power and sensitivity that suits your scenario, you need to consider the following factors: Venue size: Large venues may require speakers with higher power to ensure coverage and volume requirements. Smaller venues may be suitable for lower powered speakers.Purpose: The power and sensitivity of a speaker also depend on its purpose. For example, concerts and large events often require high-power and high-sensitivity speakers, while smaller performances and conference rooms can use speakers with lower power and sensitivity.Volume requirements: Determine the volume level of the required sound to determine whether the selected speaker power can meet the requirements. For example, loud music performances often require high-powered speakers to produce sufficient volume.Sound quality requirements: Not only do you need to consider power and sensitivity, but you also need to ensure that the speakers you choose can provide the required sound quality. Higher power does not necessarily mean better sound quality, so it's important to fully evaluate and listen to the speaker's performance and sound quality. Take Sinbosen speakers as an example KA-1KA-2KA-3KA208 Type 3-way,dual 15" line array 3-way,dual 12" line array 2-way,dual 12" line array 2-way,dual 8" line array Power Handling LF:2X600W, MF:600W, HF:220W LF: 2 x 500W MF:320W HF: 160 W LF: 2 x 500 W HF: 140 W LF: 450 W HF: 80 W Maximum SPL 149 dB 147 dB 143 dB 142 dB KA-1 and KA-2 have high volume output and carrying capacity, and can provide powerful and deep bass performance. Ideal for large indoor and outdoor events such as concerts, concerts, large-scale performances, etc. It can meet the music needs of the scene and ensure that the music has extensive and strong coverage at the event site.KA-3 and KA208 line arrays have smaller output capabilities and sensitivity, and are suitable for some small and medium-sized indoor and outdoor activities, such as small parties and performances, etc., bringing a better live sound experience. Sinbosen High-grade pa speaker dual 15 inch 3 ways line array speakers outdoor professional event KA-1 made of waterproof, temperature-resistant, high-quality sound materials, and some humanized details are added! Sinbosen High-grade pa speaker dual 12 inch 3 ways line array speakers outdoor professional event KA-2 made of waterproof, temperature-resistant, high-quality sound materials, and some humanized details are added! Sinbosen High-grade speaker dual 12 inch 2 ways line array speakers outdoor professional event KA-3 made of waterproof, temperature-resistant, high-quality sound materials, and some humanized details are added! KA208 Line array dual 8 inch passive speaker pa system KA208 Line array dual 8 inch passive speaker pa system

What are the advantages of polyurethane paint? Polyurethane paint is a high-performance coating that has strong weather resistance and can withstand the erosion of ultraviolet rays and climate changes. It has good chemical resistance and can resist acid, alkali, and corrosive chemicals. It has strong wear resistance and can withstand friction and abrasion. It has good water resistance and is suitable for humid environments. It has high adhesion and can tightly bond with various substrates. It has good workability and is easy to apply to form a smooth coating. These advantages make polyurethane paint widely used in the fields of construction, automotive, marine, industrial equipment, and more. Why do speakers use polyurethane paint? Firstly, polyurethane paint has excellent durability, which can protect the speaker's casing, resist scratches, wear and chemical corrosion, and extend the lifespan of the speaker. Secondly, the high glossiness and color stability of polyurethane paint can enhance the appearance and visual effects of the speaker, giving it better quality and attractiveness. Additionally, using polyurethane paint on speakers can also provide waterproofing, protecting the internal electronic components from moisture and liquid damage. Lastly, polyurethane paint offers a wide range of color choices, allowing manufacturers to design personalized speaker appearances according to market demand and consumer preferences. What are the advantages of using polyurethane paint for speakers? ●Good wear resistance and durability, able to resist scratches, abrasion, and chemical corrosion in daily use, protecting the speaker casing from damage and extending the lifespan of the speaker.●Specially formulated polyurethane coatings for the surface of speakers, including noble and elegant surface granules, with strong decorative effects, and customizable colors for personalized equipment.●Prevents color fading and surface yellowing caused by sunlight radiation. Especially for outdoor speakers, as they are more susceptible to sun exposure.●Excellent moisture and dust resistance, preventing moisture, dust, and other pollutants from entering the interior of the speaker, protecting internal electronic components from damage and ensuring stable sound quality of the speaker. Is polyurethane paint environmentally friendly? Polyurethane paint is a coating that is solvent-free or has low volatile organic compound (VOC) emissions, resulting in lower emissions of volatile organic compounds during use. Additionally, polyurethane paint typically does not contain lead, heavy metals, or other harmful substances, making its impact on the environment and health relatively small. How to protect the polyurethane paint finish of the speaker？ Avoid exposing the speaker to strong sunlight to prevent color fading and surface discoloration. Secondly, regularly clean the speaker to prevent dust and dirt from damaging the paint finish. Also, be careful to avoid using cleaning agents that contain acidic or corrosive ingredients to prevent damage to the coating.

JT-08, VT-08 and YT-08 are three professional stage line array speakers launched by Sinbosen. Constructed with high-quality compact birch shell, first-grade Russian birch plywood and multi-layer spray-on polyurea waterproof coating, high-quality imported neodymium magnetic speakers with multi-layer weatherproof finish to withstand the most demanding portable applications. Delivers excellent sound quality, coverage and reliability. These three line arrays are completely different. In terms of size, the JT-08 (dual 12-inch line array) is the largest, followed by the VT-08 (dual 10-inch line array), and the YT-08 (dual 8-inch line array) is the smallest. In terms of appearance, the back of the JT-08 is completely different from the other two line arrays, and the side handles are also different, making it easy to distinguish. On the other hand, the VT-08 and YT-08, apart from the difference in size, have very similar designs. It is difficult to differentiate them by placing their front and back views together, so it is necessary to find their differences in detail. Detail 1 VT-08 has an aluminum plate on the upper panel, but YT-08 does not. Detail 2 VT-08 has 3 small holes, YT-08 only has 2 small holes JT-08 is a compact line array speaker with a precision-designed interlocking mechanism for convenient and fast line array arrangement and high-efficiency dynamic sound projection. Suitable for small to medium-sized application scenarios, including concerts, stage performances, and conferences.VT-08 is a medium-sized line array speaker with high power output, which can provide larger audio coverage, balanced sound quality and wide dynamic range. Suitable for large-scale indoor and outdoor events, such as music festivals, sports events and large-scale performances.YT-08 is a lightweight and portable medium-sized line array speaker. It is small in size and light in weight, making it easy to carry and install quickly. The unique cam mechanism and tilt angle options allow the speaker to be easily installed in various positions. Suitable for application scenarios that require more flexible installation and portability. JT-08  VT-08 YT-08 ConfigurationLarge format 3-way line array loudspeaker High performance 3-way passive line array loudspeaker High performance 2-way passive line array loudspeaker Frequency response (-5 dB standard)48 Hz - 17 kHz 48 Hz - 17 kHzHz 54 Hz - 19 kHz Maximum SPL145dB142dB139 dBNominal impedance6 Ω (LF) / 12 Ω (MHF)8 Ω8 ΩSplay angle settings0 - 7° (1° increment)0° - 14° (1° increment)0° - 14° (1° increment)Components2 x 12" driver / 1 x 10" driver2 x 1.4" exit compression driverpassive crossover network2 x 10"   neodymium driver / 1 x 8" driver2 x 1.4" exit compression driver2 x 8" driver with neodymium magnet1.4" exit compression driverpassive crossover networkConnections2 x NLT4 F/Moptional 2 x EP5 or 2 x NL82 x NLT4 F/Moptional 2 x NL42 x NLT4 F/Moptional 2 x NL4 or 2 x EP5Dimensions (H x W x D)360 x 1100 x 570 mm14.2 x 43.3 x 22.4"310 x 700 x 460 mm12.2 x 27.5 x 18"257 x 630 x 375 mm10 x 24.8 x 14.8" Weight60 kg/132 lb 34 kg/75 lb 20 kg/44 lb Related Products Sinbosen High quality 3-way double 12 inch line array speaker loudspeaker outdoor professional event High quality neodymium magnetic horn, housing waterproof, sunscreen, anti-corrosion wear-resistant coating. 3 way dual 10 inch audio line array speaker VT-08 is coated with polyurea paint, which is waterproof, high temperature resistant. Dual 8 inch 2-way passive line array speaker professional Professional 2-way passive neodymium magnetic outdoor stage performance event line array speakers.

What is the gain of a speaker? Gain is used to amplify the signal entering the audio device circuit, and the process of adjusting the gain value is used to adjust the strength of the input signal in the preamp section. Generally speaking, the higher the gain, the louder the sound, but it is also prone to noise and distortion. What is the function and impact of Gain? 1. Volume controlGain can be seen as the "knob" for audio signals, allowing us to control the volume of the audio signal. This is useful for balancing the volume of different audio sources and adjusting the output of the sound system according to different environmental needs.2. Dynamic range managementThe dynamic range of an audio signal refers to the difference between the maximum and minimum amplitudes in the signal. By adjusting the Gain, we can expand or shrink the dynamic range of the audio signal, thereby affecting the expressiveness and realism of music or movies.3. Balancing multi-channel systemsIn a multi-channel sound system, each speaker typically plays a specific frequency range or channel. Properly adjusting the gain of each speaker can balance the sound performance of the entire system, ensuring that the outputs of each speaker match each other and maintain good sound balance and equilibrium.4. Signal-to-noise ratioThe setting of gain also affects the signal-to-noise ratio of the sound system. Setting the gain too high may increase the system's noise level relative to the signal, affecting the performance of the signal-to-noise ratio. Therefore, it is important to balance the signal strength and noise level in gain adjustment to achieve the best signal-to-noise ratio effect. Note: If the gain is set too high, the signal-to-noise ratio will decrease, resulting in more prominent background noise. It can also cause clipping distortion due to current output limitations. These phenomena are commonly referred to as overload or overloading. If the system operates in an overloaded state for a long time, it will shorten the lifespan of the equipment and increase the failure rate. Therefore, we cannot use gain as a measure of volume. Tips for Properly Adjusting Gain: 1. Balance input signals: Before adjusting the gain, ensure that the volume of all input signals is balanced. This will prevent certain signals from being too prominent or going unnoticed.2. Understand input and output signals: Prior to adjusting the gain, understand the strength of the audio input signals and the power requirements of the speakers. Based on the signal strength and requirements, choose an appropriate gain setting.3. Start with a lower gain setting: Set the gain to a lower initial value to avoid excessive gain. This will prevent overload and distortion before increasing the gain. Begin with the initial value and gradually increase the gain while monitoring the output sound of the speakers in real-time.

What are the different configurations for the KA15 line array? 2-way 15-inch line array KA15 utilizes advanced acoustic technology to provide realistic sound reproduction, enhancing music, speeches, and sound effects. With high sound pressure levels, it meets the demands of large audiences while maintaining clear and low distortion sound. It offers a wide audio coverage range, capable of covering audience areas, ensuring every listener can enjoy relatively even sound. The adjustable angle allows for customization according to specific venue requirements. This makes it suitable for various applications, whether indoor or outdoor. Installing the KA15 line array speakers on both sides of the stage provides even sound distribution, meaning that the audience can hear relatively consistent sound quality throughout the coverage area. This helps ensure that there are no obvious dead spots or areas of excessive amplification. Hanging them on the sides of the stage minimizes the use of stage space to the maximum extent. This provides more freedom of space for performers and other equipment, and reduces the complexity of equipment placement. The configuration of 1+1 is easier to transport and set up, making it particularly suitable for occasions that require frequent movement of sound systems. At the same time, it integrates the components of the sound system into a smaller space, reducing the footprint of the system. The KA21 subwoofer is usually portable, and the KA15 line array speaker is relatively lightweight, making it easier to carry and install. When used in combination, the KA15 line array speaker and the KA21 subwoofer can achieve deeper and stronger bass response. By suspending the KA15 on the KA21, the sound source is closer to the ground, reducing the impact of floor reflections on sound quality. This can help improve the clarity and resolution of the sound. The KA15 is stacked on top of the KA21, and the combination of two KA21 subwoofers and the KA15 provides a deeper and more powerful bass effect, enhancing the low-frequency response of the sound system. This helps achieve a more even distribution of sound, reducing dead spots or areas with uneven sound in the audio system. The audience will be able to enjoy a more consistent sound throughout the coverage area. This setup allows for higher sound output and a larger sound coverage range, making it suitable for large events and occasions that require powerful sound.

The A15 Focus and Wide enclosures are made of high-quality Baltic birch plywood and birch plywood to ensure maximum acoustic and mechanical integrity. The use of curved wood technology combined with thickness optimization greatly reduces weight and ensures that the cabinets are sturdy and acoustically optimized. Each enclosure features ergonomic handles, bottom ground rails, matching top tracks, and corner protectors to protect the side panels during transportation. The A15 products can be combined for hanging or stacking to form vertical or horizontal line sources, or used individually as configurable directional point sources. The highly versatile series includes the A15 Focus and A15 Wide passive 15-inch systems with unique coverage patterns. The combination of A15 Focus and A15 Wide can be flown or stacked to form a vertical line source. The A15 Focus can also be used individually as a configurable direct point source for front fill or delay applications that require narrow coverage. The A15 can accommodate almost any audience geometry and offers two options for shell coverage (10° or 30°). Panflex allows users to configure the waveguide directivity (70°, 110°, or 90° asymmetrical) and a range of vertical or horizontal deployment accessories. The main difference between A15 focus and A15 wide is the vertical coverage angle. 10° Vertical Coverage Angle:Narrow coverage range: A 10° vertical coverage angle means that the sound from the speaker will be highly concentrated in the vertical direction, covering only a very narrow area.Suitable for long-distance projection: A 10° angle is suitable for situations where the sound needs to be accurately projected to a distant target, such as outdoor concerts or stadiums.30° Vertical Coverage Angle:Wider coverage range: A 30° vertical coverage angle means that the sound from the speaker will have a wider dispersion in the vertical direction, covering a broader area.Suitable for close-range use: A 30° angle is suitable for occasions where a wider area needs to be covered, such as small concerts, conference rooms, or indoor events. The appropriate vertical coverage angle depends on the specific needs of the venue. A narrower angle is suitable for situations that require long-distance projection and precise sound positioning, while a wider angle is suitable for situations that require coverage of a broader area. The selection of the appropriate line array speaker is typically based on the characteristics of the venue and the requirements of the event, in order to ensure that the audience receives the best sound quality and coverage range. A15 FOCUS  A15 WIDE Description 2-way passive constant curvature WST 10° 2-way passive constant curvature WST 30° Usable bandwidth (-10 dB) 41 Hz - 20 kHz 42 Hz - 20 kHz Maximum SPL1 144 dB 141 dB Nominal directivityEnclosure: 10°Panflex: 70°/110° symmetric or 90° asymmetricEnclosure: 30°Panflex: 70°/110° symmetric or 90° asymmetricTransducersLF: 1 × 15"neodymium cone driverHF: 1 × 3" diaphragm neodymium compression driverNominal impedance8 ΩConnectorsIN: 1 × 4-point speakONLINK: 1 × 4-point speakONRigging and handlingFlush-fitting two-point rigging system2 handles, 8 corner stops and 2 ground runnersCabinetPremium grade Baltic beech and birch plywoodRigging componentsHigh grade steel with anti-corrosion coatingWeight (net)35 kg/77 lb33 kg/73 lb