Feature:
1. Applicable Power Supply: It is recommended to use a 18V 19V 24V power supply with a current of 5A or more. If you only have a 9V 12V or 1A 2A power supply, you can also use it, but the power is small. Note that when you use it, the volume may be distorted and affect the sound quality.
2. Voltage and Current: The higher the voltage, the greater the current and the more output power. If you only have 12V 1A, you can bring 3‑4 inch speakers. If you are 19V 5A or above, no problem with 8‑10 inches.
3. 2 Sound Input Mode: This sound power amplifier module has two sound input modes, one is Bluetooth input, the other is AUX input, Bluetooth mode is preferred. Bluetooth can connect in any mode.
4. Bluetooth Mode: Bluetooth mode supports automatic reconnection. When there is no Bluetooth connection, AUX is inserted in AUX mode. When using AUX mode, you need to confirm that the Bluetooth connection of this module has been disconnected.
5. Note: The BASS potentiometer in the middle controls the bass, the right handed bass boosts, and the left handed bass attenuates. When the potentiometer is in the middle position, the bass is neither boosted nor attenuated.
6. Note: The TREBLE potentiometer on the left controls the treble, the right handed treble is enhanced, and the left handed treble is attenuated. When the potentiometer is in the middle position, the treble is neither boosted nor attenuated.
Specification:
Item Type: Bluetooth Sound
Power Amplifier Module with Tone
Model: ZK-TB21
Material: PCB
Bluetooth Version: 5.0 (Unblocked, 10m32.8ft)
Signal to Noise Ratio: >90dB
Input Method: Aux, Bluetooth
Number of Channels: Left and Right Dual Channel (Stereo)
Power Amplifier Chip: TPA3116D2 (with Am Interference Suppression Function)
Adapter Power Supply: DC9-24V2A or Above (the Higher the Voltage, the Greater the Output Power)
Adapter Speaker: 15-100W, 4-8 Ohm
Output Power: 15W x 2 at 12V, 8 Ohm 30W x 2 at 12v, 4 Ohm
20W x 2 at 19V, 8 Ohm 40W 2 at 19V, 4 Ohm
30W x 2 at 24V, 8 Ohm 50W 2 at 24V, 4 Ohm
Protection Mechanism: Overvoltage, Undervoltage, Overheating, DC Detection, Short Circuit Protection.
Package List:
1 x Sound Amplifier Module
2 x Shell
4 x Stud
4 x Screw Column
9 x Screw
1 x DC Line
1 x Adapter
1 x Screwdriver
Note:
Only when the sound input is sufficient and the power supply voltagecurrent is sufficient will there be enough output power! The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance is, the greater the output power! Actual working power!
