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To protect the rights of customers, Sinbosen conducts electromagnetic vibration testing on each amplifier before shipment. Electromagnetic vibration testing is a test method used to evaluate the reliability and durability of products in a vibration environment. It tests the structural strength and functional stability of the product by simulating various vibration conditions that the product may encounter during transportation, installation and use. Working Principle Electromagnetic vibration testing is usually performed using an electromagnetic vibration tester. The device generates vibrations through electromagnetic force and transmits the vibrations to the vibration table. The vibration table is used to place the product to be tested, and the product is vibrated by the movement of the vibration table. The core component of the electromagnetic vibration tester is the electromagnetic exciter. When current passes through the coil, a magnetic field is generated around it, which interacts with the permanent magnet in the vibration table to generate a torque, thereby driving the vibration table to reciprocate. Purpose Evaluate equipment performance: Through electromagnetic vibration testing, the performance of the power amplifier under electromagnetic interference and mechanical vibration environments can be comprehensively evaluated, including audio output quality, signal stability, and equipment stability, etc., providing an important basis for product performance evaluation. Discover potential problems: During the test, potential problems that may occur in the power amplifier under electromagnetic interference and vibration environments, such as insufficient electromagnetic compatibility and loose structural connections, can be discovered, and improvements and optimizations can be made in a timely manner to improve product quality and reliability. Guide product design and improvement: The test results can provide guidance for product design and improvement, helping engineers understand the performance of power amplifiers in different environments, thereby optimizing circuit design, improving structural layout, enhancing electromagnetic shielding, etc., and improving the overall performance of the product. Ensure product compliance: Through electromagnetic vibration testing that complies with relevant standards, ensure that the power amplifier products meet market access requirements, can successfully pass safety certification and quality inspections, enter the market for sales, and meet the needs of consumers and professional stages. Importance Ensure equipment reliability: Stage amplifiers are subject to various electromagnetic interferences during use, such as wireless signals, radiation from other electronic devices, etc. Electromagnetic vibration testing can simulate these interference environments, detect the performance of the amplifier under electromagnetic interference, and ensure that it will not fail or degrade due to electromagnetic interference in actual use, thereby ensuring the reliability of the equipment. Improve sound quality stability: Electromagnetic interference may affect the transmission and processing of audio signals of the amplifier, resulting in problems such as sound quality distortion and increased noise. Through electromagnetic vibration testing, the sound quality performance of the amplifier under electromagnetic interference can be detected to ensure that it can provide stable sound quality output in various electromagnetic environments and meet the high requirements of professional stage for sound quality. Extend equipment life: Vibration testing can simulate the mechanical vibration that the amplifier may encounter during transportation, installation and use, and detect the stability and durability of its structure. Through vibration testing, the weak links of the equipment under vibration environment can be found and improved, thereby extending the service life of the equipment. Comply with safety standards: Electromagnetic vibration testing is an important part of amplifier safety testing, and complies with relevant international and national standards, such as IEC 62368-1, etc. It is a necessary step to ensure product safety and compliance. Through testing, the safety performance of the amplifier can be ensured in various electromagnetic environments and vibration conditions, avoiding safety accidents caused by electromagnetic interference or structural failure. Providing customers with high-quality products and services has always been Sinbosen's purpose and pursuit. We firmly believe that good products should be recognized by customers and achieve win-win cooperation with customers.

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?

Single-phase and three-phase are two common power supply methods in power systems. The main difference between them lies in the number of phases of the power supply and the phase of the voltage. Single-phase: A single-phase power supply system contains only one AC phase and is usually used for home and small commercial electricity. In a single-phase system, the voltage and current have only one phase, that is, there is only one AC waveform. A single-phase power supply system usually uses two wires, one is the phase line (also called "live wire" or "live wire"), and the other is the neutral line (also called "zero line"). A single-phase power supply system can provide a voltage of 220V (mainland China, Europe, etc.) or 110V (United States, Japan, etc.). Three-phase: A three-phase power supply system contains three AC phases, and the phase angle between each phase differs by 120 degrees. In a three-phase system, the voltage and current have three phases, and the waveforms of each phase are staggered by 120 degrees from each other. Three-phase power supply systems usually use four wires, three of which are phase wires (also called "live wires" or "live wires", corresponding to three phases), and the other is a neutral wire (also called "zero wire"). The three-phase power supply system can provide a voltage of 380V/220V (mainland China, Europe, etc.) or 208V/120V (USA, etc.). The three-phase power supply system is usually used for industrial and commercial electricity because the three phases can balance the load, which can provide greater power and higher efficiency. The three-phase power system is usually used in industrial and commercial scenes that require high power, but sometimes in some specific cases, it is necessary to convert three-phase electricity into single-phase electricity for use by specific equipment. The three-phase power supply can be converted to single-phase power supply by connecting the appropriate winding configuration of the transformer. Specifically, any two phases of the three-phase transformer can be connected together as a common neutral line, and the remaining third phase is output as a single-phase power supply. In this way, the original three-phase electricity is converted into single-phase electricity. Three-phase electricity contains three phases, and there is a time difference between the voltages of each phase. Single-phase electricity has only one phase. In some application scenarios, the device may only need a single-phase power supply, or one phase of the three-phase power supply may have a voltage difference with the other two phases, and a separate power supply process is required. In this case, the conversion from three-phase to single-phase becomes particularly important. The following is the connection method of Sinbosen LA cabinet LAS4+8 three-phase to single-phase

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﹣

Neutrik Interface is a series of professional connectors and interface products produced by Neutrik, focusing on providing high-quality connection solutions in the fields of audio, video, lighting, power supply and data transmission. Advantages of Nutrek interface Exquisite craftsmanship and excellent quality: Neutrik audio connectors are world-renowned for their exquisite craftsmanship and excellent quality. From material selection to manufacturing, every link is strictly controlled to ensure that each product can meet the highest standards.Excellent sound quality and true sound restoration: Neutrik audio connectors use advanced transmission technology and high-quality materials to ensure that the audio signal can maintain a high degree of purity and stability during transmission. Whether it is the clear and bright high frequency or the deep and powerful low frequency, it can be perfectly restored.Wide compatibility: Neutrik audio connectors can easily adapt to various audio devices and interfaces with their wide compatibility. Whether it is professional recording studios, live performances, radio and television or home theaters, you can find suitable products to meet your needs.Innovative design and industry leadership: Neutrik has always been at the forefront of audio connection technology, constantly exploring and innovating. Its unique design concept and advanced manufacturing process not only improve the performance and quality of the product, but also set a new benchmark for the entire audio connector industry.Durability and reliability: Durability and reliability are core features of Neutrik interfaces. They are designed to withstand daily wear and tear in professional use and provide a stable connection.Professional audio interface: The XLR interface provided by Neutrik is a professional audio interface commonly used in high-end audio equipment and high-end microphones such as condenser mics. The XLR interface uses a balanced analog audio transmission method, which can offset interference signals to obtain high-quality analog signals.Locking mechanism: For example, Neutrik's XLR interface uses a locking device, which makes the connection quite reliable. It is generally used to connect microphones to sound cards or speakers, which can ensure the stability of the connection better than ordinary interfaces.Anti-interference ability: Balanced transmission interfaces such as XLR use two channels to transmit signals with the same voltage and opposite phases. The receiving device subtracts the two sets of signals, and the interference signals are offset, thereby obtaining a high-quality analog signal. As an electronic product with many parts and complex circuit design, the selection of accessories is crucial. As a professional audio equipment company, Sinbosen aims to produce high-quality audio equipment, so it chose the internationally renowned brand Nutrex interface to provide better quality assurance.

As an important part of the power amplifier, the power amplifier board may be damaged for various reasons and need to be replaced. The following are some reasons that may cause damage to the power amplifier board: Device aging or damage: After long-term use, the high-power tubes, field-effect tubes, power filter capacitors and thermistors on the power amplifier board may cause electrolyte overflow, burst or breakdown due to aging, causing damage to the power amplifier board. Power supply problem: Unbalanced load of each phase of the power supply line or problems with the power supply line itself may cause the power amplifier to overheat or overload, thereby damaging the power amplifier board. Input signal problem: The input signal is too large or there are distortion problems, such as noise interference, signal attenuation, etc., which will cause the power amplifier to be unable to receive normal audio signals, resulting in output distortion or distortion. Feedback circuit problem: The feedback circuit is an important part of the power amplifier. If there is a problem with the feedback circuit, such as component damage, poor line connection, etc., the power amplifier will not work properly, resulting in output distortion or distortion. Overheating or overload: When the power amplifier is overheated or overloaded, the possible reasons include power supply problems, improper heat dissipation design or excessive input signals. Frequency drift or instability: When the power amplifier has frequency drift or instability, possible reasons include component aging, capacitor or inductor failure, feedback network problems, etc. Electromagnetic interference: The 220V AC power supply is not clean or the amplifier itself has poor filtering, which may cause noise problems, thus affecting the normal operation of the amplifier board. Poor contact: The signal line has poor contact, especially the microphone line, which is prone to poor internal contact due to frequent shaking, causing noise and AC noise. Sinbosen FP series is one of the hot-selling product series, sold to many countries and customers. If the Sinbosen FP series amplifier you purchased is damaged due to other operations and needs an amplifier board, the following is the operation engineering of replacing the amplifier board of the FP series amplifier: Firstly, Take out all of screws on the amplifier board. Secondly, Put the insulation material under the board to avoid short circuit. Distinguish each channel board. A B C D channel Take out the insulation paper There is two more screws on the B and D amplifier board Thirdly, Take out 4pcs cables and one pcs white cable Now our engineer demo for the D channel board replacement Look, Take out 4pcs cables and one pcs white cable Put some tins on four pcs points. Connect with cables by soldering machine. Screw in two pcs screws Important! Put the insulation paper back! Connect with the White cable. Screw in other screws

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. 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.

LA8 LA12X DSP power amplifier wired connection DSP software steps Step 1: Insert the Ethernet cable Step 2: Find the IPv4 address on the computer For example, in the image below, the IPv4 address of this computer is 169.254.5.161 Remember this number, and enter the first 7 digits into the software. Step 3: Enter the IP address into the software. The first 7 digits are the same as the computer. Pay attention to the last three digits, which can be any number between 0-250, but must be different from the last three digits of the computer. Step 4: Enter the password: admin, and you will be successfully connected. Other supplements: If you need to set different input and output signals, there are two common settings below that can be saved to the computer. Setting one: 2 input signals, 4 output signals. Setting 2: 4 input signals, 4 output signals Saving method: Preset - Save - Export - Import

The Sinbosen AD48 4-input, 8-output digital audio processor is designed for professional audio applications with its versatile control options via Ethernet or RS-232. It features comprehensive audio management functions like gain, gate, crossover, EQ, delay, and limiter, allowing for precise sound tuning. The user-friendly LCD display ensures easy operation, and its compatibility with various Windows versions adds flexibility. These features make the AD48 a powerful tool for achieving high-quality audio performance. How to connect AD48 Audio processor with Router? - Wireless connection Step 1 - Plug the network cable into Router (LAN connector) Step 2-Click the WI-FI Setting, find the IPv4 Address Step 3-Right click the mouse key,IP setting Step 4-Right click the mouse key,IP setting Write in the IPv4 Address. Noted the last 3 number is between 001-250,but can't same as your computer IPv4 address. Step 5-Write in pass word,it is admin - Wired connection Step 1 - Plug in the network cable to computer and processor Step 2-Click the Ethernet,find the IPv4 Address Step 3-Right click the mouse key,IP setting Step 4-Right click the mouse key,IP setting Write in the IPv4 Address.Noted the last 3 number is between 001-250,but can't same as your computer IPv4 address. Step 5-Write in pass word,it is admin

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. Input interface XLR interface: used to receive balanced signals, usually used to connect microphones or other professional audio equipment. Has good anti-interference ability. TRS interface: balanced audio input, can be used to connect musical instruments or audio equipment, with triode connector. RCA interface: usually used to connect unbalanced audio equipment, such as consumer-grade CD players. 2. Preamplifier Operational amplifier (Op-Amp): used to increase the gain of weak signals (such as from microphones or instruments) and increase signal strength. Low-noise types (such as NE5532, OPA2134, etc.) are usually used. Filter circuit: can contain high-pass and low-pass filters to remove unnecessary frequencies. 3. ADC/DAC (Analog-to-Digital Converter/Digital-to-Analog Converter) ADC: In some designs, the input analog signal is converted to a digital signal for subsequent digital processing. DAC: After digital processing, the signal is converted back to an analog signal to drive the speaker. 4. Power amplifier section Power transistor: MOSFET (field effect transistor): high efficiency, fast switching response, suitable for high frequency applications, capable of handling high current. IGBT (insulated gate bipolar transistor): usually used for higher power applications, with superior voltage control capabilities. Drive circuit: PWM (pulse width modulation) module: used to control the switching of power transistors to ensure efficient conversion and minimum distortion. 5. Output transformer (in some designs) Output transformer: may be used in the design to match the output impedance of the power amplifier with the input impedance of the speaker to improve energy transfer efficiency. 6. Output interface Speakon interface: designed for audio equipment, providing safe and reliable connection, commonly used in professional audio systems. Banana plug: commonly used to connect speakers, can be inserted into the output of the speaker, simple to handle, often used in education and laboratory environments. 7. Power supply section Switching power supply module: efficient conversion of AC to DC, often used in TD class amplifiers, because they can provide the necessary power output while maintaining a small size. Filter capacitor: usually use large capacity low ESR capacitors to reduce the high frequency noise of the power supply and provide stable voltage. 8. Heatsink Heat sink: Many amplifier designs include aluminum heat sinks to increase surface area for efficient heat dissipation. Fans: In high power output situations, electric fans provide additional air circulation to help dissipate heat in a timely manner. 9. Protection circuits Short circuit protection: Once a short circuit condition is detected, the output is automatically cut off to protect the amplifier and speakers. Overload protection: Gain is reduced or output is shut down when the power is too high to avoid damage. Temperature monitoring: Temperature sensors can monitor the internal temperature of the amplifier and automatically adjust the power or shut down when overheating. 10. Indicator lights and control panel LED indicator lights: used to indicate power status, signal input status, protection status, etc. Control knobs: usually include gain control, EQ adjustment and selector switches, etc., which can be used to adjust audio parameters. 11. Housing Aluminum alloy housing: light and strong, can prevent electromagnetic interference (EMI) and mechanical damage, while providing good heat dissipation. Internal layout: Reasonable layout of circuit boards and components to reduce signal interference and improve maintainability.

Questions about Sinbosen logo customization In a market environment where brand competition is increasingly fierce, a unique and recognizable logo is an important part of a company's image. As a professional stage audio equipment factory, Sinbosen provides customers with high-quality logo customization services, which can not only help companies improve their brand awareness, but also convey their core values and concepts. Customized requirements MOQCostRemarkFinish timeSuitable products Laser Print LOGO 1freeSupports single-color LOGO, the pattern cannot be too complicated The most commonly used methodFinished on the same dayAmplifier, processor, microphone (microphone with aluminum label cannot be lasered, only aluminum label or PVC can be made), power sequencer, etc. Silk screen LOGO 5freeSupports monochrome LOGO, the pattern cannot be too complicated Less than 5 units, screen printing fee is 15USD Free silk screen printing for more than 30 wired microphones3 ~ 4 days epoxy sticker 15freeSupports color LOGO If the quantity is lower than the limit, 150 yuan will be charged for each LOGO. Quantity of LOGO to be produced: 503 ~ 4 daysAmplifier, processor, microphone (microphone with aluminum label cannot be lasered, only aluminum label or PVC can be made), power sequencer, speaker PVC LOGO20freeSupports color LOGO If the quantity is lower than the limit, 150 yuan will be charged for each LOGO. Quantity of LOGO to be produced: 503 ~ 4 daysSpeakersMetal LOGO50freeLess than 50 pieces, custom fee RMB1000, 1000 LOGOs7~10 daysSpeakersFlight case silk screen LOGO20pcs speakersfreeLess than 20 speakers, air box with silk screen logo, +200rmb7~10 daysWooden flight caseCustomized kraft-paper box with simple logo20freeIf the quantity is greater than 0 and less than 20pcs, add 400rmb, and it can be refunded after the accumulated quantity reaches the required amount.7~10 daysSuitable for microphones, amplifiers, processors, can only be a simple monochrome printing on the kraft paper boxCustomized on white box or colorful box100freeIf the quantity is greater than 50 and less than 100pcs, add 1500rmb, and the refund can be made after the cumulative amount reaches the required amount.7~10 daysAmplifier Microphone Processor Power SequencerCustomized panel design50freeIf the quantity is greater than 50 and less than 100pcs, add 1500rmb, and the refund can be made after the cumulative amount reaches the required amount.20-30 daysAmplifier, ProcessorCustomized panel color20freeFor example, change the panel of the power amplifier to full silver. Less than 20 units, +500rmb7~10 days Processor, amplifierCustom DSP software/freeNo customization accepted/DSP amplifier, processor Contact Sinbosen Sitio web: http://www.sinbosen.com/ Whatsapp: https://api.whatsapp.com/send?l=en&phone=8613342806188 Facebook: https://www.facebook.com/sinbosenamplifier/ Correg electronico: sales7@sinbosen.com

The D series is Sinbosen's best-selling digital amplifier. This series of amplifiers has 2 Ohm stability, wide voltage, uses gallium nitride power tubes, 90V-270V wide voltage operation, can adapt to harsh power grid environments, standby sleep mode, power saving and durability. However, different models of the D series use different capacitor brands. D4-1500, D4-2000, D4-3000 use NIPPON CHEMI-CON Capacitor; D2-4200, D2-3000, D2-3500 use Nichicon Capacitor or NIPPON CHEMI-CON Capacitor; D4-1300 uses Taiwanese capacitors. What are the advantages of Japanese Black Diamond capacitors? Low Equivalent Series Resistance (ESR): Black Diamond capacitors have very low ESR, which helps improve the efficiency and performance of circuits. High Ripple Current Capability: They can handle higher ripple currents, which is particularly important for power supply and amplifier circuits. High Stability: They demonstrate excellent stability and reliability under different temperature and frequency conditions. Excellent Sound Quality: Particularly suitable for audio equipment, they can significantly improve sound quality and are the ideal choice for high-fidelity audio systems. What are the advantages of Nichicon capacitors? High reliability: Nichicon capacitors are known for their high reliability and are suitable for various harsh working environments. High performance: Nichicon capacitors have excellent electrical performance, suitable for high-frequency circuits, power supplies, etc. Long lifespan: High-quality design and materials ensure the long lifespan of the capacitors. Environmentally friendly: Nichicon is committed to producing products that meet environmental standards and reduce environmental impact. Excellent temperature characteristics: Able to operate stably in a wide temperature range, suitable for various industrial and consumer electronic applications. What are the advantages of Taiwanese capacitors? Diversity: Covering various types and specifications of capacitors to meet different application needs. High performance: Superior electrical performance suitable for high-frequency circuits, power supplies, etc. Long lifespan: High-quality design and materials ensure the long lifespan of capacitors. Cost-effective: Typically have a high cost-performance ratio while maintaining high quality. Environmentally friendly: Producing products that meet environmental standards to reduce impact on the environment. Good capacitors can significantly improve the sound quality of stage amplifiers by efficient filtering, coupling, and frequency response adjustments, reducing noise and distortion, and providing clearer, purer, and more stable audio output. Therefore, no matter which model of the Sinbosen D series you choose, it can bring a good sound experience to the stage. D4-3000 Class D amp digital power amplifier 6500W 2 ohms stable 4 Channel Class D Digital power amplifier,Mini 1U size. Suit for Top speaker, full range speaker,Line array speaker. Sinbosen D4-2000 2 ohm stable 4400 watts 4 channels digital 1u digital power amplifier 4 channels class d 1u digital amplifier D4-2000 professional power amplifier. 2 ohms stable amplifier for line array speaker. D2-4200 digital high power stereo subwoofer amplifier D2-4200 2 channel D series 2 ohms stable 8500W high power amplifier professional for stage performance! 1300 watts 2 ohms work stable 4 channel digital power amplifier 4-channel D-Series amplifier provides stable 2-ohm operation for powerful and reliable digital audio performance.

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.