ZLD problem

[Vettesetter]

Okay, so I need some stereo help up here. I just installed an Exile ZLD, when I turn off my system, by way of the sony remote, I get a loud thud through the speakers as it turns off? This didn't happen before the ZLD was added to the system. I have the ZLD remote wire connected to the remote terminal on one of the amps.

[Bawshogg]

May be a good time to use a relay in your remote turn on circuit. Might be the simplistic solution, or you are gonna have to find out where in your signal path the thump is coming from.

[robtr8]

Search this forum for "turn off thump" or "turn off pop".

[Murphy8166]

Commom problem with EQ's as the leadoff hitter is a system. Most H/U have a delay built in them so that speakers and amps turn on a couple seconds after the source power up.

This will solve it. http://www.darvex.com/store/pc/Stinger-Amplifier-Pop-Stopper-1p9.htm

You will want to figure out if the "pop" comes with turn on or shut down and wire accordingly.

[David]

Okay, so I need some stereo help up here. I just installed an Exile ZLD, when I turn off my system, by way of the sony remote, I get a loud thud through the speakers as it turns off? This didn't happen before the ZLD was added to the system. I have the ZLD remote wire connected to the remote terminal on one of the amps.

When the amplifier reproduces the HU or EQ turn-off event you get a loud 'thud'. If all is wired correctly, the amplifier is supposed to have a quick responding mute circuit. Keep in mind that an amplifier has considerably more power storage and will take a little longer to completely power down. This may be an issue with one amplifier only. The EQ introduction, when everything is still run off a HU, rarely would cause this problem. I would look over your wiring again. First, make certain that the EQ remote and power leads are not reversed. Verify that both the HU and EQ have a great ground shared by the amplifiers and that the HU and EQ have a positive supply shared by the amplifiers. Move the EQ turn-on lead from the amplifier terminal and direct to the HU trigger. Then a relay, which is a good item regardless, and then the Stinger if the problem still persists. The Stinger is a correction for a faulty product or faulty installation. I'm not yet convinced it is product.

[Murphy8166]

David, are u saying put the relay b/t EQ and amps.

So the chain would be headunit, EQ, relay and on to the amps?

Thanks man

[David]

David, are u saying put the relay b/t EQ and amps.

So the chain would be headunit, EQ, relay and on to the amps?

Thanks man

I'm glad you ask for clarification.

I was recommending that he initially run the EQ remote lead direct to the HU trigger instead of gaining that on/off voltage at the amplifier terminal, however, prior to introducing the relay. Just being thorough and if the noise wasn't there before the EQ I don't trust the new wiring until proven otherwise. But once that relay is added, all EQ & amplifier(s) on/off trigger voltage would be received from the relay output.

[Vettesetter]

Thanks everyone, I will work on it next weekend and post the results. This site is awesome!