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Audio install problems.
#297136
14/02/2007 07:11
14/02/2007 07:11
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Anonymous
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Anonymous
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As many of you may have noticed, yesterday i wasnt on the forum. Was out getting someone to wire in my girlfriends sounds system in her car. But there is a problem.... ![cry °\(](/forum/images/graemlins/default/cry.gif) Basically there is 2 rca's running to the rear to connect into 3 amps. One rca for the speakers and one for the subwoofer. Now forget the other amps for the moment. We only got as far as the speakers amp. Its a dub amp and when we wired it all up and it lit up there was no sound but a "pwr/prot" warning light. So it was protecting itself against a power overload?? Anyways, managed to get the amp working but only on the radio mode of the head unit. Anything else (dvd, aux etc) would trigger the protection circuit. Increasing the volume on the headunit or the amp would also trigger this. Anyone, any ideas as to why this is happening? No problems with the headunit before this and i run the same headunit connected to an amp aswell, without any problems. Ross
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Re: Audio install problems.
[Re: Jimbo]
#297139
14/02/2007 07:19
14/02/2007 07:19
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Anonymous
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Anonymous
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Well here is the thing... It has high and low level input settings.
The low level is where the rca's are plugged in just now. The high level requires some kinda adaptor.
Ross
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Re: Audio install problems.
[Re: BrianMay]
#297591
15/02/2007 01:40
15/02/2007 01:40
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Anonymous
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Anonymous
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Oh right. We have a Star Sound Jackslammer amp aswell, which was supposed to run the sub, but we might wire it in a way that it gives power to the speakers and the other amp gives power to the sub, or will that still not work because of the RCA output?
Ross
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Re: Audio install problems.
[Re: ]
#297688
15/02/2007 03:18
15/02/2007 03:18
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Joined: Dec 2005
Posts: 10,729 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,729
N.E Scotland
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If it's a decent headunit, which I'm sure it is, you might be able to change the voltage output of the RCA's.
Or you could try turning off the internal amp in the headunit.
Death-rattle-tastic
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Re: Audio install problems.
[Re: mattB]
#297768
15/02/2007 05:16
15/02/2007 05:16
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Anonymous
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Anonymous
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If it's a decent headunit, which I'm sure it is, you might be able to change the voltage output of the RCA's.
Or you could try turning off the internal amp in the headunit. sounds like you need to explain to him how you could do this
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Re: Audio install problems.
[Re: ]
#297780
15/02/2007 05:26
15/02/2007 05:26
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Anonymous
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Anonymous
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Oh right. We have a Star Sound Jackslammer amp aswell, which was supposed to run the sub, but we might wire it in a way that it gives power to the speakers and the other amp gives power to the sub, or will that still not work because of the RCA output?
Ross run a voltage meter on your rca and se what the voltage is [more than likely 2v and under which is ok on any decent amp] than check you have a live remote turn on wire in all mode’s[i.e. cd,tuner,aux]sounds like you may have two from your h u, one might only work for the aerial amp hence the radio etc, also check the power cable isn’t warm i.e. to much load, last of all you must have a good earth other than that make sure you haven’t earthed out a speaker, all these symptoms can cause your fault, other than that, your amps are toast matey. Hope this helps
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Re: Audio install problems.
[Re: ]
#297987
15/02/2007 18:06
15/02/2007 18:06
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Anonymous
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Anonymous
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We've tested the amp with it just connected to the headunit and above a certain voltage its just going into protection. Maybe need to test the RCA's right enough and see what they putting out. Thing is tho, (just remembered) that even when the volume on the heaunit is 1, if you try and amp it up with the amp's volume control, it just goes into protection again? Is this another sign that the RCA's are kicking out too much voltage?
Ross
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Re: Audio install problems.
[Re: ]
#298035
15/02/2007 19:15
15/02/2007 19:15
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Joined: Dec 2005
Posts: 10,729 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,729
N.E Scotland
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If it's a decent headunit, which I'm sure it is, you might be able to change the voltage output of the RCA's.
Or you could try turning off the internal amp in the headunit. sounds like you need to explain to him how you could do this How am I supposed to know how to work his headunit? ![crazy](/forum/images/graemlins/default/crazy.gif)
Death-rattle-tastic
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Re: Audio install problems.
[Re: ]
#298039
15/02/2007 19:17
15/02/2007 19:17
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Anonymous
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Anonymous
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not really in my experience if lets say you had a one off head unit i.e. a Rockford fosgate kicking out 8 volts pre out you would get distortion up to all most full kick then maybe protection, after the list I wrote you if all correct wiring wise you gotta think the amps got faults,But a speaker short will deffo cause this tho instantly, with so many possibilities to the cause, you really will have to do a full system check
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Re: Audio install problems.
[Re: ]
#298120
15/02/2007 21:39
15/02/2007 21:39
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Anonymous
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Anonymous
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We are gonna try a different amp sunday/tuesday and see if we can find out if its the amp. I suspect it is.
Ross
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Re: Audio install problems.
[Re: BrianMay]
#298305
16/02/2007 01:48
16/02/2007 01:48
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Anonymous
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Anonymous
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But that would cause the amp to be dodgy at all points?
Ross
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Re: Audio install problems.
[Re: ]
#298312
16/02/2007 01:55
16/02/2007 01:55
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Anonymous
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Anonymous
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Not necessarily Ross, a shit earth is the most common fault on ICE installs. Easy to check.
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Re: Audio install problems.
[Re: ]
#298316
16/02/2007 02:01
16/02/2007 02:01
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Anonymous
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Anonymous
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Well... we drilled a hole in the floorpan, and put a bolt in and used that as an earth.
Ross
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Re: Audio install problems.
[Re: ]
#298317
16/02/2007 02:04
16/02/2007 02:04
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Anonymous
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Anonymous
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Good show, did you make sure you removed all the paint and primer so it had a good bare metal contact?
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Re: Audio install problems.
[Re: ]
#298332
16/02/2007 02:26
16/02/2007 02:26
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Anonymous
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Anonymous
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Yeah took a piece of sand paper to it.
Ross
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Re: Audio install problems.
[Re: ]
#298334
16/02/2007 02:28
16/02/2007 02:28
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Anonymous
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Anonymous
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OK, and the power is from the battery yes?
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Re: Audio install problems.
[Re: ]
#298362
16/02/2007 02:58
16/02/2007 02:58
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Anonymous
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Anonymous
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Yeh from the battery with 4 gauge.
Ross
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Re: Audio install problems.
[Re: ]
#298363
16/02/2007 02:59
16/02/2007 02:59
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Anonymous
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Anonymous
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Hmmm, maybe it's a fooked amp then.
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Re: Audio install problems.
[Re: ]
#298378
16/02/2007 03:28
16/02/2007 03:28
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Anonymous
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Anonymous
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Thats what we are thinking. U an audio installer? any DUB amps?
Ross
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Re: Audio install problems.
[Re: ]
#298387
16/02/2007 03:43
16/02/2007 03:43
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Anonymous
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Anonymous
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I'll fit anything. ![laugh \:D](/forum/images/graemlins/default/laugh.gif) However we're not an Audiobahn agent I'm afraid. ![frown \:\(](/forum/images/graemlins/default/frown.gif)
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Re: Audio install problems.
[Re: ]
#298839
16/02/2007 19:45
16/02/2007 19:45
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Anonymous
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Anonymous
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U in glasgow anytime soon dude?
Ross
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Re: Audio install problems.
[Re: ]
#299021
17/02/2007 00:06
17/02/2007 00:06
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Anonymous
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Anonymous
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I don't think so, but to be honest I haven't looked at next weeks fitting diary yet...
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Re: Audio install problems.
[Re: ]
#299032
17/02/2007 00:16
17/02/2007 00:16
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Anonymous
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Anonymous
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Any chance you could drop me a line if your gonna be near so you can take a look? ![laugh \:D](/forum/images/graemlins/default/laugh.gif) Ross
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Re: Audio install problems.
[Re: ]
#299034
17/02/2007 00:17
17/02/2007 00:17
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Anonymous
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Anonymous
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Of course. ![cool](/forum/images/graemlins/default/cool.gif)
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Re: Audio install problems.
[Re: ]
#302843
22/02/2007 11:19
22/02/2007 11:19
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Anonymous
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Anonymous
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RMA'd two audiobahn amps straight out of the box. Not very impressed. Vibe BB2's still going fine after 4 yrs of use/abuse ![smile \:\)](/forum/images/graemlins/default/smile.gif)
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