I connect the unit to my amplifiers (1 monoblock + 1 Two Ch.), sub sounds great, but the pre outs the left one no sound comes out of it both of them, left front and left rear, the right ones work fine, all of this happened all of a sudden 2 weeks ago....had my unit installed six months ago and was working fine, untill now.
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Re: No sound comes out of the left pre outs
It sounds like the preamp wire that carries the left channel signal between the HU and the 2ch amp has an issue. Here's two quick things to check.
Check that both ends of the left preamp cable between the deck and 2ch amp is not loose or disconnected.
Swap the left and right preamp connections at the amp. If the issue stays with the left channel, the issue is with the amp. If the issue moves to the right channel, the issue is with the preamp cable or the HU's preamp output.
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well what ampage is your amp ?? for example if its a 350 amp and you have two speakers at 200 each the sound quality will be **** in other words but if you have 1 thats 150 and 250 the less powered speaker is going to give out more sound. either that or one of the channels is broke or weak
:) the rca jacks have to be connected to an amplifier,, their signal is too lay to even light a bulb.. you have to connect it to a car amplifier and then from the amplifier to the speakers..
Just so you'd know,, once your deck plays and you hear music on your speakers through your normal speaker wires,, RCA jacks work..
Ok you have 4 jacks,, 2 subs and 2 front.. These should connect to a preamp,, which takes 4 inputs and allows you to equalize or adjust how the music should sound,, now from the pre-amp,, it runs to an amplifier,, thats powers the subs and another that powers the speakers.. Some amps have 4 inputs so you can use one amp for your subs mids and heights..
for example a basic music system is
1 cd player 1 pre amp 1 amplifier (4 inputs, 4 channel out)
you bridge 1+2 and connect this to 1 12" double coil sub woofer
the next 2 connect to 2 mid speakers example "rockford or ev 5 / 8 " and 2 tweeters for heights..
Thats a kicking tricked out basic car audio system,,,
Good question, well constructed, a real fault report.
I would say from you fault description that maybe there is a dry joint / loose connection somewhere in the system.
So check all your wiring / connections.
Put the amp back into 2 ch mode and check each ch with the same source and load, do it both cold, and then drive the amp and do it hot do the shake test on both ch, cold and hot.
maybe this will help id the faulty area, if both ch have fault the it might be the psu as this is common to both sides.
If you can track down the fault to a or b then you can resolder all the connections on the board, if you are not happy with taking the lid off then take your amp with your test report to a tech, the test results may save you time and money.
go to standby hold m-log button tell menu comes on display press up on volume control tell amplifier comes on display pess left on volume control tell display says amp on. the built in amp on the stereo turns of and on to provide better sound quality to the pre-amp out puts
if you wanted to use your receiver as your controller and source then try to find out the receivber has got a bridge (jumper) between the pre-amp stage and the power amp stage. if your receiver does not have that, then you can just connect your receiver tape record out to one of your DSP inputs. subwoofers, the DSP has got a sub woofer out connector. you can use that (RCA type) to your sub woofers. put in series because DSP has got only one output for sub. or, you can connect your subs directly to the mains speakers, parallel connections. maybe one sub to your left and the other to your right channel.
You can download the installation manual from the link below:
It has the following diagram plus other hookup info...
Please update the question & let us know if the information given was useful to you - Good Luck!