rem wire problem

[89prelude2.0Si 10+ year member]

Hey all i installed my system the other day and i ran the remote wire from my amp to the specified wire on the radio the "remote amplifier turnon" wire and it worked i was listening to the radio and i turned the volume up just a little bit and the subwoofer amp shut off i turned it back down just a little it came back on...i ask some friends what this was they said try removing your rem wire from the radio and just jump it over to the 12volt power connector on the amp, the spot i put the wire to the battery , i did and then it worked just fine i could turn as loud as i want the only thing is is that my amp stays on like that and it'll kill my battery.....what to do?

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[sleepr 10+ year member]

Move the wire to the switchable 12v power wire off the HU.

 

[jlsnydertyper]

The best thing to do is to use a relay from your deck to the amp. Sometimes your amp switch pulls more current than your radio is able to supply. This is usually the case when hooking up multiple amps.

 

[EarDrummin. 10+ year member]

Since current = volts..

Volts from head unit? eh?

 

[jlsnydertyper]

Yes, the remote from your head unit is a 12 volt output and it only has a limited amount of current... A relay from your head unit lead would draw a small amout of current, but would supply enough current to simultaneously turn on all the components you want.

 

[helotaxi 5,000+ posts]

Since current = volts..

Only on a 1 Ohm load. Current and volts measure two different things. Current is the "flow" of electrons between to potentials and is measured in amps (A). Voltage is the difference in charge between two points and is measured in volts (V).

To address the original poster's question, as jlsnydertyper alluded to, as you increased the volume on your headunit, the additional power needed by the internal amp on the headunit caused a voltage drop in the head unit and leaving the 12V remote turn on short on voltage. Since the amp wasn't getting the voltage it needed to turn on, it turned itself off. The fix is to wire a 12V relay from a constant 12V source (the amp power wire is a usual source) to the remote terminal of the amp and use the remote lead from your head unit as the trigger lead for the relay.

 

[Cantaffrdspeaks 10+ year member]

why dont you just ghetto rig a switch from your bat. to the switch then too the rem. on the amp???? wouldnt that work??

 

[helotaxi 5,000+ posts]

why dont you just ghetto rig a switch from your bat. to the switch then too the rem. on the amp???? wouldnt that work??

The bold in the quote answers your question.

 

[89prelude2.0Si 10+ year member]

lol i think ill go with the relay thing because i've spent laot of money on this so far and i want it all done right, just incase your wandering its 3 JL audio 12W7's with a JL audio 450/4 amp

and this equals up to the total price of....lol lets just say i owe the bank bunches //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Bumpin_Ack 10+ year member]

When you say shutting off, do you mean like no power or protected mode?

 

[89prelude2.0Si 10+ year member]

i think its going to no power im not shure i havent looked at the amp lights while it was on ...

 

[no_vendetas 10+ year member]

my bad...............