Question about Sony XM-754HX Car Audio Amplifier

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Hi everybody ! I've bought this amp out of order. Into, i can see cut wires but don't know where i can replug them... Can somebody help me ? Many thanks !!

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Here is the link to the user manual All the connections and installation wiring are well documented in english and french. Hope this helps - please ask again if you have any problem :)

Posted on Apr 11, 2007

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you need to determine what impedance the amp is running at ,how many spekers ,most 2 channel amps will only run 2 4 ohm subs per channel and only 1 4 ohm speaker in bridge ,Basically if you have 2 4 ohm speakers bridged at the amp it will usually cut in and out .Some amps will not do this for a while and will work for a while at low impedance but once they get older and hot and cool off many times they will then only work for the intended ohm load ,Do you have 2 speakers ,if so make sure 1 is on left channel and 1 is on 2nd channel (should not cut off ) if it is a mono amp ,make sure you are only running 2 4 ohm subs and not dvc speakers (these will run 1 ohm and shut the amp down ) there are ways of wiring more speakers or dvc speakers ,I can explain but I need to know what product you have .

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My amp is working but everytime it cuts off and i got to cut off my car and cut it back on. Also when i have the car off and i have my radio on it stays on. But when i am driving like 1 or 2 mins it cuts...

Check your ground wire and make sure it is bolted down into a solid ground. Do not use a factory ground make your own. Every system that has subwoofers has a little blue wire called a remote wire. The deck sends a signal to the amp thru this wire letting it know it has been powered on. It could be that there is a short in this wire, either from the deck side (where the wires are connected) or it could be also be detiorated insulation on the wire. pretty inexpensive to replace. In my opinion it sounds like you have a shotty ground wire. If you don't have this grab yourself a nice foot of 4 guage wire at your local HI-Fi shop. This should fix your issue if not let me know and we will keep troubleshooting

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check all wires .... make sure your speaker wires arent in the wrong order or shorting ...

did this just start of was it always going on ... if it just started its probly a short in the wires

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Im not sure if its my amp or my subwoofer but it will cut out when i play differnt songs?


Can you be more specific, when you say that it cuts out while you play different songs ?

Does that mean any song cuts in and out...or only on some cd's ?

I'm thinking either your cd's are scratched...which is the easiest solution..The next one involves your amp.

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This is a very common problem and shouldn't be hard to fix. Just make sure the end is secure.

Post back if you have any further question's or comments. Thank you for choosing Fixya!

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That is a very nice amp . Try not to touch (short) those wires together. But yes, the amp has protection and is shutting off to protect it.

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your amp may be overheating, or you have it up too loud and the surge protector is shutting it of in fear of damage to your amp.

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