Thread: car sub/amp

so i just put a new amp in today i blew my old one and at low volume the sub/amp works really good but once i turn the volume up the sub/amp turn off. any idea as what it could be.
thanks in advance.

Is it hot to the touch when this happens? Could be a thermal fault. Is it well ventilated? Also does it clip before it does this?

yea it gets really hot.

Is it a new amp? If it is an older amp that was been abused or used with low ventilation, the thermal fault could be worn to wear it doesn't take much to trip it. Also check your ohm load compared to what the amp is stable at?

it a new amp just got it today. i did turn it down but then i cant hear the sub.and a guy i work with told me about the amp cause he has the same sub as i do (i sold the sub to him) and the amp works fine with his.

If it gets hot that fast, and shuts down before it kills itself <in like 10-30 seconds> gotta be an ohmage problem with the sub. Maybe the amp isn't 1 or 2 ohm stable, when your other one was. Could be an intermittent VC short in the sub, which is what bombed your old amp, and might eat this one, too.

What amp and what subs do you have? Ported or sealed boxes?

Originally Posted by Gregorius

If it gets hot that fast, and shuts down before it kills itself <in like 10-30 seconds> gotta be an ohmage problem with the sub. Maybe the amp isn't 1 or 2 ohm stable, when your other one was. Could be an intermittent VC short in the sub, which is what bombed your old amp, and might eat this one, too.

What amp and what subs do you have? Ported or sealed boxes?

its an alpine type R sealed box with a pioneer amp

turn the gain way down and retest.. make sure your wires are touching ..ie + touching -

Are you using a bridged mode?

Originally Posted by Lawngoose

turn the gain way down and retest.. make sure your wires are touching ..ie + touching -

Are you using a bridged mode?

yea im using the bridged mode i have only one sub

Originally Posted by grand2000prixgtp

its an alpine type R sealed box with a pioneer amp

Model Numbers would help a lot...

Originally Posted by Gregorius

Model Numbers would help a lot...

gm-5400t

2 channel pioneer amp? is the ( + ) hooked up on the 1st channel and the ( - ) on the 2nd channel? yeah defently if it gets hot that fast, somethings not right. any smoke or funny smell??

Originally Posted by offroadfury6

2 channel pioneer amp? is the ( + ) hooked up on the 1st channel and the ( - ) on the 2nd channel? yeah defently if it gets hot that fast, somethings not right. any smoke or funny smell??

yea thats how i have it hooked up. no smoke i havent looked at it for that yet and no funny smells. i had an old amp that i blew and it smelled and smoked like crazy this one is not like that yet. maybe ill return it and try a different one.

its either too much gain and the speakers are just sucking the life out of the amp or the impediance ( ur ohms, or also the way its wired up )

ok. i have turned the bass but ill try hooking it up in a different way.

GM-5400T

Output Power (4 Ohm, <=1% THD) 125 Watts x 2
Output Power (4 Ohm Bridged, <=1% THD) 380 Watts x 1
Output Power (2 Ohm, <=1% THD) 190 Watts x 2

Nice lil amp, but it is NOT 2 ohm stable in bridged mode. Most Type-R subs are Dual VC, or are 2 ohm..
Are you sure the amp is getting a 4 ohm load?

The Model # of the Alpine would help too

Originally Posted by Gregorius

GM-5400T

Output Power (4 Ohm, <=1% THD) 125 Watts x 2
Output Power (4 Ohm Bridged, <=1% THD) 380 Watts x 1
Output Power (2 Ohm, <=1% THD) 190 Watts x 2

Nice lil amp, but it is NOT 2 ohm stable in bridged mode. Most Type-R subs are Dual VC, or are 2 ohm..
Are you sure the amp is getting a 4 ohm load?

The Model # of the Alpine would help too

im not sure the model number on the on the sub but its an older one.
do you know how i should wire the sub up to have it work right then?

Originally Posted by grand2000prixgtp

im not sure the model number on the on the sub but its an older one.
do you know how i should wire the sub up to have it work right then?

Yes. If possible....

I missed this post of yours:

" it a new amp just got it today. i did turn it down but then i cant hear the sub.and a guy i work with told me about the amp cause he has the same sub as i do (i sold the sub to him) and the amp works fine with his."

If you are SURE the subs are exactly the same, and you bought the same model Pioneer as he did, something is broken.

Hook up the sub to one side of the amp, run it hard for a few minutes, then try the other side. That will test the amp and the sub, and verify that nothing is broken, and that you have a 2 ohm SVC sub.

Is there 2 sets of posts on the sub? red black and on the other side red black? If so it's Dual Voice Coil......