Description
Feature:Product Name: 100W*2 BT audio amplifier module with ToneProduct Model: ZK-1002MTBT Version: 5.0 (no shielding, 15 meters)SNR: >90dBAudio Input: AUX + BTChannel: 2.0 (stereo)Chip Solution: Domestic power amplifier chipPower Supply: DC 12?24 V / 5A or above (Do not connect to 24 V battery pack)Adapter Speaker: 30~200 W, 4~8 ?Power supply voltage:12V8?/20W+20W, 4?/35W+35W19V8?/35W+35W, 4?/60W+60W24V--8?/50W+50W, 4?/100W+100WProtection mechanism: Overheat, Overcurrent, short circuit protection Product size: 99mm*60mm*21 mmPackage weight: about 122gPS: In the audio input is enough, the supply voltage/current is enough, there will be enough output power!The higher the supply voltage, the greater the output power. The smaller the impedance of the speaker, the greater the output power! Please ensure that the power of the adaptor is greater than the actual working power of the amplifier!
Package includes:
1 x 100W*2 BT audio amplifier module with Tone
Question and Answer:
1. How to choose a power supply?The power supply with the board is critical. The higher the voltage, the higher the current and the better the output power. If you only have 12V 1A, you can use a 3-4 inch speaker. If you are 19V 5A or above, there is no problem with 8-10 inches, and the power supply must be highly valued. If the voltage is too low, the sound will be distorted after the sound is amplified. If the current is too small, the speaker will pull the voltage low, work abnormally or the sound quality will deteriorate.It is recommended to use 18V/19V/24V power supply with current above 3A. If you only have 9V12V or 1A 2A power supply, it can also be used but the power is small. Please pay attention to the maximum volume when using it, which may affect the sound quality.
2. How to choose a speaker?Commonly used speakers are generally 4 ohms or 8 ohms, can not distinguish between positive and negative, the effect is the same.lf your speaker power is small, it may be used between 10W-30W. The power supply voltage is small to prevent the amplifier from burning out after burning. For example, select a power supply below 15V.If you are a 50W-100w speaker, don't worry about the speaker burnout. You can choose 12-24V power supply. The higher the voltage you choose, the louder the output sound or power. The speaker power is not recommended to exceed 100W, otherwise the sound quality will be affected.
3. Introduction of audio input mode.This audio amplifier module has two audio input modes: one is BT input and the other is AUX input. BT mode is preferred. BT can be connected in either mode. As long as the BT connection is successful is BT mode, and BT mode support automatic connection. AUX insertion is AUX mode when BT is connectionless. It is important to make sure that the BT connection of this module has been disconnected when using AUX mode.
4. How to adjust the bass and high pitch?The BASS potentiometer in the middle is to control the BASS, the right BASS is enhanced, the left BASS is attenuated. When the potentiometer is in the middle position, the bass is neither enhanced nor attenuated.The TREBLE potentiometer on the left controls the TREBLE, the right TREBLE enhanced and the left TREBLE attenuated. When the potentiometer is in the middle position, it does not increase or decrease the treble.Note when adjusting treble and bass: when the treble or bass right rotation is adjusted to the maximum, if the sound is distorted, it means that the treble or bass gain is too large. It is necessary to turn the treble or bass potentiometer to the left to reduce the gain or turn the VOLUME potentiometer to the left to reduce the total volume.
5. When the sound becomes louder, the phenomenon of turbid sound appears.The sound is distorted. Please change the adapter power supply with a higher voltage rating.
6. After the sound becomes louder, the sound is stuck.The input power is insufficient, and the power supply itself is intermittently powered off. Please replace the power supply with a larger power.Or the output power is too large, the power amplifier board is seriously heated, and thermal protection occurs, reducing power usage or enhancing heat dissipation.
7. What are the factors related to the sound quality?Sound quality is not only related to the amplifier module, but also to the sound source and the entire sound system. Basically every link of the sound system will affect the sound quality, among which the main link is the audio transmission line, audio power supply, tone circuit, amplifier circuit, speaker and the surrounding environment. Sound quality is best only when the sound source, amplifier module and speaker are matched.
