Hi,

I am finally going to get a 4-ch amp to drive the fronts and the rear spearkers. One of the side benefit that I was hoping to get from this is to enable the mute button. (I have PAC to JVC HU already. JVC does not have the mute lead-in.)

Question: do you think I can use the same scheme mentioned at few places that uses Radio Shack Reed Relay (part# 275-233) to the cell-phone mute, for controlling the Amp's remote signal wire?

If this works, then I don't mind the disadvantage of keeping the HU running while the amp is powered off and on for the mute.

Regards,
JL

 

As long as the current rating of the relay isn't exceeded, the same scheme is applicable.

 

Here's the scoop on the Radio Shack 275-233 relay from an email I sent Dan (Macgyver) months ago:

[QUOTE]This relay is perfect for our mute button application, as far as I can tell.

 

Most amps are designed to be "turned on" by a low current signal from a head unit or other electronic output. I'd be surprised if it took more than a few milliamps to turn on an amp.

Goferit.

 

Thanks for the info.

The amp is Soundstream A4. The manual doesn't say what the load is on the remote line. I wasn't worried about blowing the relay when I test. I was more worried about frying it later inside the dash.

Anyway, I will just go for it as Modifry says and see how it works.

 

I installed a relay with the new amp. I had to use Radio Shack SPDT Miniature PC Relay #275-248A. The 275-233 had the "Normally Open" only and I needed "Normally Closed" for the Amp remote signal. (Duh!) The muting button is working now.

Thanks for your help.

 

I'm glad you got it working.