Features
1.Adopt special inductor for high power digital amplifier, high current, low magnetic loss, small heat, use oxygen-free copper wire to improve sound quality, magnetic shielding mechanism to resist electromagnetic interference.
2. Carry two TPA3221, support 2.1 channel Bluetooth digital amplifier 100W + 100W + 200W high power.
3. Subwoofer expansion port, support the addition of 1602, 3002.
4. Multiple expansion port, can be connected to the microphone preamp board reverb input or output, easy to use.
5. With protection mechanism, with input undervoltage, input anti-reverse connection, overheating, overcurrent, short circuit protection.
1.Adopt special inductor for high power digital amplifier, high current, low magnetic loss, small heat, use oxygen-free copper wire to improve sound quality, magnetic shielding mechanism to resist electromagnetic interference.
2. Carry two TPA3221, support 2.1 channel Bluetooth digital amplifier 100W + 100W + 200W high power.
3. Subwoofer expansion port, support the addition of 1602, 3002.
4. Multiple expansion port, can be connected to the microphone preamp board reverb input or output, easy to use.
5. With protection mechanism, with input undervoltage, input anti-reverse connection, overheating, overcurrent, short circuit protection.
Specification
Product Name: 2.1 channel Bluetooth amplifier board 100W+100W+200W
Product Model: ZK-ST21
Adaptable power supply: operating voltage range 12-30VDC, recommended voltage 24V-28V, current 10A or 10A or more DC power supply.
Maximum power: left or right channel - 105W@30V, 4Ω; 55W@30V, 8Ω. subwoofer - 208W@30V, 2Ω; 105W@30V, 4 Ω. In short, the higher the voltage, the lower the resistance, the higher the output power. The higher the voltage, the lower the resistance, the higher the output power.
Adaptable speakers: Left and right channels, support 3-8Ω, up to 100W speakers; subwoofer support 2-8Ω, up to 200W speakers.
Bluetooth chip: Jelly 5.1, transmission distance 15 meters
Input mode: Bluetooth + AUX + U disk + sound card
Number of channels: 2.1, left channel + right channel + subwoofer
Amplifier chip: two TI original TPA3221
Protection mechanism: input undervoltage, input anti-reverse connection, overheating, overcurrent, short circuit protection.
Product size: 121x100x25mm
Product Name: 2.1 channel Bluetooth amplifier board 100W+100W+200W
Product Model: ZK-ST21
Adaptable power supply: operating voltage range 12-30VDC, recommended voltage 24V-28V, current 10A or 10A or more DC power supply.
Maximum power: left or right channel - 105W@30V, 4Ω; 55W@30V, 8Ω. subwoofer - 208W@30V, 2Ω; 105W@30V, 4 Ω. In short, the higher the voltage, the lower the resistance, the higher the output power. The higher the voltage, the lower the resistance, the higher the output power.
Adaptable speakers: Left and right channels, support 3-8Ω, up to 100W speakers; subwoofer support 2-8Ω, up to 200W speakers.
Bluetooth chip: Jelly 5.1, transmission distance 15 meters
Input mode: Bluetooth + AUX + U disk + sound card
Number of channels: 2.1, left channel + right channel + subwoofer
Amplifier chip: two TI original TPA3221
Protection mechanism: input undervoltage, input anti-reverse connection, overheating, overcurrent, short circuit protection.
Product size: 121x100x25mm
Product list
1 x ST21 amplifier board
1 x Enclosure kit (optional)
5 x Cable (optional)
1 x ST21 amplifier board
1 x Enclosure kit (optional)
5 x Cable (optional)
Attention
1. Shipment does not include power supply, audio cable.
2. Add external antenna (special scene):
2-1. board are with on-board antenna, the normal distance of 10-15 meters, if it is loaded into a metal shell (will shield the signal) or increase the Bluetooth distance (20-30 meters) will only use the external antenna.
2-2. Customers need to buy their own 2.4G antenna (antenna extension cable, antenna bar), this product does not include external antenna.
1. Shipment does not include power supply, audio cable.
2. Add external antenna (special scene):
2-1. board are with on-board antenna, the normal distance of 10-15 meters, if it is loaded into a metal shell (will shield the signal) or increase the Bluetooth distance (20-30 meters) will only use the external antenna.
2-2. Customers need to buy their own 2.4G antenna (antenna extension cable, antenna bar), this product does not include external antenna.
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Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.
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If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately. Returns accepted within 30 days of delivery date and item must be in original new condition.
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Please contact us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.
Please fill in the correct address and zip code and I will ship quickly!
- If the item is defect when you receive it or you are not satisfied with it, please return it within 30 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.