Problems with speaker protection kit

shukamanon · 27th December 2010, 08:51 PM

Hi there,
I recently bought a speaker protection kit to add to my power amp but I am having a bit of a problem getting it to work properly, so was wondering if anyone here who understands electronics a bit better than me can help me out here...

The kit receives power from the amp and the AC sense fine and after 5 seconds of power, the relay turns on with a click, but for some reason there is no sound coming out of the speaker where I have the positive side of the speaker wire connected to the outside lug and the wire from the amp to the middle lug and the negative to the left lug (as well as the left speaker output)

The speaker runs fine if i bypass the kit but doesn't turn on when connected to the relay. I am just wondering is this because I am only using one channel of the stereo kit and so need to either bridge the other side or should that not matter?

Is this kit running in mute mode because only one speaker is hooked up?

Hopefully someone who can read schematics a bit better than me can work this out for me.

Thanks a lot

Andrew

Greg Erskine · 27th December 2010, 09:18 PM

Quote:

Originally Posted by shukamanon

I am just wondering is this because I am only using one channel of the stereo kit and so need to either bridge the other side or should that not matter?

Is this kit running in mute mode because only one speaker is hooked up?

No and no. It should work fine for one channel.

Check the contacts are opening and closing with a multimeter.

Although it sounds like you have connected the input and speaker correctly (for R) I would guess there is a problem here. That is all that can be wrong if the relay is working.

Try the opposite side.

regards

shukamanon · 27th December 2010, 09:44 PM

Thanks for the idea, I plugged the wires into the other channel and it works fine

So I guess I must have a faulty part on the original channel (R)... oh well, as long as one channel works is all that i need...

Thanks,
Andrew

jaycee · 28th December 2010, 12:49 AM

If you hear the relay click, and the other channel works fine, it is more likely that the relay itself has a bad contact.

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27th December 2010, 09:44 PM	#3
shukamanon diyAudio Member Join Date: Dec 2010 Location: Brisbane	Thanks for the idea, I plugged the wires into the other channel and it works fine So I guess I must have a faulty part on the original channel (R)... oh well, as long as one channel works is all that i need... Thanks, Andrew

28th December 2010, 12:49 AM	#4
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	If you hear the relay click, and the other channel works fine, it is more likely that the relay itself has a bad contact.

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