I had this installed last week and now I've got a problem. Last night I had the volume up pretty high and all off the sudden everything went off. Then I could hear a whisper and then I could finally barely hear some music.

Basically the amp is lighting up and turning off anytime it needs power to push to the speakers and the sub. I don't even think I was pushing it that hard but who lknows. I let it be overnight thinking it might have overheated because it is mounted inside the Old Bose sub location and I haven't added a fan for it yet. Plan to do that though.

What's going on with the amp??? Anyone know why it it's turning off? I appreciate everyone's time. Thank you. Here are links to my equipment:


http://www.cardomain.com/item/PPI48340
http://www.cardomain.com/item/PPI39307
http://www.cardomain.com/item/PPI28107

 

Anyone? Help please

 

Sounds like you either have the speakers wired wrong and the breaker in the amp is kicking it off to save your speakers and amp or you are trying to push to much power through your speakers.. Find the gain control on the amp and tun it all the way down and thenabout half a turn back if it does not shut off as fast or much then it is wired wrong.. You may also check the + - terninals. If either is touching metal anywhere it will cause a short to.. Are the mounnted in a door ? Just my 2c.. Good luck

 

Well the wiring was done by a professional that has done many installs on Z's. I doubt the wiring is wrong. The system had been running fine for about a week and now I can't get it to even crank the volume 5% without it going out. The way he mounted the amp makes it hard to look around it but I can't find any fuses either. I thought maybe a bad fuse, but can't find them. I'll try the gain now.

 

not the gain

 

I'm noticing that when I try to turn the volume up at all the amp is just going on and off with the beat of the music. When it needs to push any power out at all it is going off and then back on. When it is at a VERY low volume (just above a whisper) I can still feel the front comps and sub getting power. Any ideas???

 

First you need to remove all the speaker wires from the amp. Using a multimeter check to make sure none of the speaker wiring has continuity to ground (short.) Then take each speaker wire pair and measure resistance. You should get somewhere around 3.3 to 4.5 ohms. If any measure clsose to zero ohms or infinite resistance then you have a bad speaker casuing the amp to go into protection mode.

Then there is the ghetto way. Look at the amps LED's, It is probably going into protection mode. Remove all speaker wiring (leaving power, ground and remote turn on connected.) If the amp is still going into protection mode the amp itself is the culprit. If it stays on properly, begin adding each set of speaker wires on one pair at a time. If you have a short in the wiring or a bad speaker on the other end, the amp will begin to go into protection mode again as soon as you hook up the bad set.

Hope this helps

Dave
www.soundxpression.com

 

this used to happen to me when my mtx amp was overheating.... just take it back before you do any damage. I ignored it and ended up blowing the power supply or something (cant really remember what)

 

one sub or 2? I guess the precision amps can handle a 2 ohm load, but if you had 2 subs in parallel, that would bring it down to one ohm, which could cause it to blow.

 

Have you checked the ground location? Make sure all the paint was removed and that the piece of metal it's grounded to is large enough. If a pre-existing bolt was used for ground, you might be better off using a dremel to clean the paint off a new area and a self tapping screw.

 

So there is either a speaker out or the amp is out for sure?

 

the ground for the amp was done on a new piece they installed.

I'm really hesitant to think that is could be a wiring problem because it worked just fine for a week. It stopped working right when I cranked it up pretty high.

 

You will need to try what I suggested, but I can bet that you most likely have a bad speaker.

Dave
www.soundxpression.com

 

Ok I did what you said and found out when the comps were connected it ran fine. Once the sub was connected it stopped working right again.

Earlier I had the volume very low and I saw and felt the sub moving. It was getting juice fine. Can the sub still be messed up even if it works when the volume is very low?

What now?

 

either your wiring in the box for the sub is wrong.. or the Ohm your sub's are wired for the amp is not able to push..

more detail on sub and amp would help

 

+1. If its not the ground then your amp is not stable with the OHM you are wired at. What are the specs of your amp and have many voice coils are your speakers?

 

Doesn't it sound like he's got a 400w 4 ohm trying to push 2 -10's @ 1ohm
or is it just me?

 

you were right and based on his specs

if those are good quality subs.. i would say your subs probably need more power than 110w each RMS .. or they might be wired for 2 ohm..

but i wouldn't understand why would power 110w RMS to a sub..

ok the subs are 500w RMS

its sucking too much power.. and/or wired wrong

 

Well the sub is 4ohm and it was wired by a pro. He does tons of installs. I'm sure it is wired right. It was working GREAT for a week and then when I cranked it really high it went out.

I went and got another sub and hooked it up and it is working again. Another 4ohm sub. Hopefully it's good now and I'll just return the sub.

Any more input here?

 

bring it back to the pro