I have a Sony XM-DS1300P5 amp. I disconnected my sub to fit some stuff in my trunk. When I reconnected the sub, I got no sound. I did not change/touch anything between disconnect/reconnect. I tested sub and it's working. Amp LED turns on and does not go into protection (stays green). All fuses are fine. I tried turning sub on/off in pioneer HU but no difference. WIth the car on (amp on), I switched RCA inputs to amp with inputs from my laptop but still no sound from sub (I don't know how good a test this was as there was probably very little lows coming from the laptop). Any suggestions?
When the subwoofer was disconnected was thre a chance of shorting of terminals?? If so connect a digital multimeter in Volts position and see if you get any voltage with a signal fed to the Subwoofer amp. Most subs have a fuse in line with the speaker for protection. If you are not getting any voltage then the fuse could have blown. Good luck.
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Re: Amplifier On - No Sub Sound
Are you certain you put the wires back on the amp the exact way they came off. I am not familiar with this amp but most amps if you look at the terminals where the speakers hook up there will be a plus and a minus. And generally there are four terminals. hence stereo plus and minus left and right. Some even have eight for, four channels. Since the amp is on, not getting hot and you tried two different audio inputs I would suspect speaker wiring or maybe the stuff you put in your trunk bumped a switch on the amplifier. I know this is not the exact answer you are probaly looking for but it is at least a place to start
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it sounds like it could be a blown channel in the amp. if the sub was blown it would still work just sound horrible. i have blown many subs and amps. you can bring it to an audio shop near you and they can fix it. i just got one of my channels fixed for 35$
First you need to determine if the amp is defective or if something else is causing it to go into protection, most often a short in the sub or amp wiring.
Disconnect the sub(s) from the speaker output terminals and the RCA inputs from the head unit, and test if the amp powers up OK. If it does, the problem is in the sub(s) wiring or voice coils, or in the RCA inputs to the amp. Reconnect each one-at-a-time to determine exactly where the short is and repair or replace the defective wiring or unit. If it doesn't power up with the inputs and sub(s) disconnected, the amp itself is most likely defective.
For some reason it has gone into protection mode to limit further damage to the amplifier. Remove the subwoofer wires and power on to eliminate shorted voicecoil. After checking all wires for continuity to ground, a service tech will be required.
Can it make them crank? Well, that all depends on your expectations. That amp/sub combo is going to give each sub about 125W, which isn't much. But if it's what you have, it's better than nothing. You might also consider using only one sub and bridging the amp. This would put about 340W on the one sub, which is much more reasonable.