Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.
The speaker protection board has the function of delay time (about 3 seconds) and DC protection (about 1V control voltage) .
The board circuit is simple, easy to make, and safe and reliable.
With LED display, it lights up during protection and goes out during normal work.
15A high current relay is suitable for most power amplifier boards.
Working voltage AC 12-15V, need independent power supply.
1. Speaker protection requires independent power supply, and cannot share a winding with other circuits.
2.BTL circuit requires two sets of protection boards (one for each channel)
3. The protection board is only suitable for dual-power-supply power amplifiers, and cannot be used for single-power-supply power amplifiers.
Working voltage:AC 12-15V
Dimensions:length 65mm width 40mm height 25mm
3 x Speaker protection board
3pcs Speaker Power Amplifier Board Protection Circuit Dual Relay Protector Support Startup Delay and DC Detection
Shipping:Standard Shipping about 10-25 business days