Loudspeaker protection kit + delay?2?cai

In order to protect the speakers and your own ears from the "pops" produced at the time of start-up, it is necessary to adopt specific solutions regarding the schematic of the output amplifier or simply ensure the connection of the acoustic systems to the output of the amplifier with a small delay, enough to start quietly. The proposed device provides a delay when starting the amplifier and protects the expensive speakers in case of failures - such as failure of transistors in the output cascade or specialized microchips - of audio amplifiers. In case of a malfunction in the output cascade, the acoustic systems will be instantly disconnected, remaining intact and unaffected.

This protection device can be used together with any stereo power amplifier with a supply voltage of the output cascades up to ±50V. The device itself is powered from a unipolar power supply with a voltage of AC7-18V, DC8-28V.

Specifications:

• Delay time: 3 seconds (fixed time cannot be changed).
• DC voltage detection threshold: 1 (± 0.2 V).
• When the relay is not closed (protection state), the LED indicator flashes steadily; when the relay is closed after normal operation, the LED indicator lights up for a long period of time.
• Delay time: 3 seconds (fixed time cannot be changed).
• DC voltage detection threshold: 1 (± 0.2 V).
• When the relay is not closed (protection state), the LED indicator flashes steadily; when the relay is closed after? a normal operation, the LED indicator lights up? for a period? long? of time.

Power supply: AC7-18V, DC8-28V

Dimensions: 44x65x28 mm