12-24V AC Speaker Protection Relay Board - Voltage Regulator for 500W Amplifier Control | Home Audio System & DIY Speaker Projects
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Description
Description: The speaker board has two main functions: to the audio amplifier and the loudspeakers during start-up sequence when the amplifier output might exhibit DC voltage, and to the loudspeakers in the unlikely event of an amplifier power stage failure, where DC component would damage the speaker voice coil. The core of the speaker board is the UPC1237 dedicated circuit. Features: Convenient placed large type terminal block connectors for input and output. DC monitoring and real-time for speaker supports disconnecting speaker instantly when power off. Specifications: Power: AC 12-24V Power-on Delay: Support DC : Support Outage Damage : Support PCB Size: 6.9 x 5.7cm / 2.71 x 2.24" Package Includes: 1 Set x Speaker Board(Disassembled Parts) Note: This kit requires electronic knowledge and ability, please make sure you know how to assemble and use it.
Features
This board uses 7812 as a voltage regulator and has a wide supply voltage in range of AC 12V to AC24V.
UPC1237 circuit as core has power-on delay function, DC and power outrage damage function.
These two relays are original and of high current so you do not have to worry about ignition and oxidation.
Compact size, board size is only 6.9x5.7cm, and the circuit is and simple to welded, no need to debug.
This version can be use to control 500W amplifier, each channel using a high grade relay control.
