can anyone think of a reason why an amp would suddenly go into protect mode? i checked the fuses and they are fine, ground is good, but the darn subs wont hit, they were working real good for a while than all of sudden they were off. every like 8 seconds it sounds like the subs are tryin to start again but it hits once and stops for another 8 sec.... can any one think of whats wrong and how to fix it? thanx

I'm not exactly an expert but the only thing I can think of is the Amp is over heating. either the fuse amp is too high or you got a too many speakers conected to your amp. BUT then again i'm no expert.

Check your speakers wires...especially at the woofer terminals. They're probably off the terminals and shorting.

i checked that and i changed the fuses yesterday and i used the exact same amp... i dont think its possible but could the amp have blown or maybe could it be a bad ground?

So your only running the subs off this amp??? Next question....what OHMS is the amp compared to your subs? If the subs are pulling lower ohms then the amp is designed it will go into protection.

i think the subs are 4 ohms and i dont know what the amp is its a 2 channel 1100watt amp power acoustik hammer series i believe the number is VU1100-hx or somethin along those lines, i figured it was a 2ohm amplifier, the subs are single voice coil and i dont have them bridged i have them hooked up left sub to left channel right to right, this could be a possibility but the subs were working real well and then they just shut off. i will try to unhook the speakers adn see if the amp goes into protection.

That would be a good way to see if the problem is the amp and not the speakers. I had this problem with my first amp...but I was running every speaker in the truck with it.

Also....if my trucks not running and you have the volume turned up it will send my amp into protection in approx 5-10 minutes due to the low voltage.

ok i will try that, i know when i first hooked the speakers up it blew both fuses, the speakers i had before these were 8ohms and didnt blow the fuses, however i will try this as soon as i get my truck back from the dealership, they are putting a brake kit on it... they have had it since 8am :(

ok i will try that, i know when i first hooked the speakers up it blew both fuses, the speakers i had before these were 8ohms and didnt blow the fuses, however i will try this as soon as i get my truck back from the dealership, they are putting a brake kit on it... they have had it since 8am :(

You may even try this....if your amp isn't made for 4ohms or lower you can try one ten bridged and see if it keeps running. I beleive the amp drops the ohms when it's bridged but I don't remember for sure. You can then try running both tens off the bridged lines.

IMO, you shouldn't be hooking stuff up if you don't know the impedance (ohms) of your woofers or the capabilities of your amp. I hope you don't take it personally, but that's how you fry components.

Amps go into protection mode if there is thermal overload or a short. Wires touching each other or woofers haphazardly wired in parallel presenting an undesirable load on the amp will send it into protection mode if equipped.

You need to be more clear with your situation. In your first post you stated the amp was working fine at first. Then in a later post you say it was blowing fuses when you first hooked it up. Also, you mention having 4 ohm drivers, then 8 ohms???

Try hooking up one woofer and see what happens.

Isn't there a rule that the watts on your amp should always be lower than the one on the sub, or the speakers all together?

Isn't there a rule that the watts on your amp should always be lower than the one on the sub, or the speakers all together?

No, where did you hear that from? It's always better to have more power because distortion from the amp (clipping=underpowered) will destroy speakers. Unless of course you have no restraint and crank 1k watts into a little speaker.

ok this is the full deal. i hooked up two 8 ohm subs to the amp and they worked fine, they werent great subs so they didnt sound good but they worked. then i took those 8ohm subs out and put in 2 4ohm subs of higher quality. my amplifier is 2ohms mono...http://hjem.get2net.dk/lp3power/Power/hammervu.htm its the vu1100-2x model. however when i first put these subs in they worked, but i turned the gain up way real high and the fuses blew. so i replaced the fuses and the subs worked well for a couple of hours... i drove 30 miles had the car idling for a while and everything was fine. then after i dropped my date off home i changed cds and right as the song started to play the amp cut out, and so i drove home and didnt mess with it. however on my way home i kept hearing a sound like the speakers wanted to start working again (like i said it would hit once every few seconds but thats it). anyway i get home and see the amp is in protect mode and the fuses are fine. so i figure i will take care of it tomorro (today) so this morning i took my truck to the dealership at 8 they put the brake kit on, ordered the exhaust repair, and did some other stuff. anyway i just got my truck back half an hour ago and i tried the bridging idea but that didnt do it. so i disconnected the battery and checked the ground and power wires, everything was fine. then i dissconnected the subs entirely and turned the truck on and it still went into protect mode. i believe it is blown but i fail to see how if it works for a long period of time and then suddenly goes out is my fault... i know your tryin to help me out but it was working and then all of a sudden stopped and i didnt do anything but change cds. the amp is older so it is very likely it blew or maybe im overlooking something... as of now tho i hooked up my own system (no turning back) and am just trying to find all posible remedies to my situation. any help would be appreciated. thanks

ok this is the full deal. i hooked up two 8 ohm subs to the amp and they worked fine, they werent great subs so they didnt sound good but they worked. then i took those 8ohm subs out and put in 2 4ohm subs of higher quality. my amplifier is 2ohms mono...http://hjem.get2net.dk/lp3power/Power/hammervu.htm its the vu1100-2x model. however when i first put these subs in they worked, but i turned the gain up way real high and the fuses blew. so i replaced the fuses and the subs worked well for a couple of hours... i drove 30 miles had the car idling for a while and everything was fine. then after i dropped my date off home i changed cds and right as the song started to play the amp cut out, and so i drove home and didnt mess with it. however on my way home i kept hearing a sound like the speakers wanted to start working again (like i said it would hit once every few seconds but thats it). anyway i get home and see the amp is in protect mode and the fuses are fine. so i figure i will take care of it tomorro (today) so this morning i took my truck to the dealership at 8 they put the brake kit on, ordered the exhaust repair, and did some other stuff. anyway i just got my truck back half an hour ago and i tried the bridging idea but that didnt do it. so i disconnected the battery and checked the ground and power wires, everything was fine. then i dissconnected the subs entirely and turned the truck on and it still went into protect mode. i believe it is blown but i fail to see how if it works for a long period of time and then suddenly goes out is my fault... i know your tryin to help me out but it was working and then all of a sudden stopped and i didnt do anything but change cds. the amp is older so it is very likely it blew or maybe im overlooking something... as of now tho i hooked up my own system (no turning back) and am just trying to find all posible remedies to my situation. any help would be appreciated. thanks

Well, you mentioned you turned the gain up all the way then the fuse blew. Did you try turning the gain back down?

BTW, you should never crank the gain up all the way. It's not a volume control. To set it up properly, turn the gain down all the way then put the volume control 3/4 up on the deck. Then turn up the gain until it starts to clip/distort (most people blast their music beyond clipping).

So it goes into protection without any speaker wires connected to it? Have you killed all power to it so it can come out of protection mode? Your ground is good right? UUMMM...your fuse wasn't higher then stated by the amp manufactuers I hope. To be honest...I think your amp died man. You turned up the gain and blew a fuse. Ok...but then it actually worked after replacing the fuse for a hour or so.

When you kill the power and then place the power back to the unit does it come out of protection mode or does it stay in protection mode...I assume you have a light stating protection.

i did try turning it back down but it didnt work, and i unhooked the battery and everything and it still didnt work, ill try some more stuff but i believe it died.

i did try turning it back down but it didnt work, and i unhooked the battery and everything and it still didnt work, ill try some more stuff but i believe it died.

Yeah, it sounds like it's dead.