Blown coil? Bad amp? I'm confused....

[skullsmasher 10+ year member]

Subs: 2 rockford fosgate 10" punch 3's 2 ohm---

Amp: rockford fosgate 1000w amp (2ch I think, has ++-- connections)

its a 2ch rockford fosgate p6002 amp, so 600wx2 or 1200wx1

Ok One day my subs just stopped working but I never changed anything.

I noticed the amp was apparently still getting power because the power light would come on and respond to the bass, though none way actually coming out of the subs.

I took the subs out, checked the wires (Wired for a 2ohm load) and the only thing I noticed was one of them had a coil cover flapping off of it partially.

I glued the flap back down and tested each of the subs, one at a time, by themselves.

Each sub, when I connected to one coil, sound would come out. But also, on each of them, one coil, when connected, would not work.

Is that normal? Do both coils or one primary coil, need to be connected first, for the other one to work as well?

I put them back in and still, no sound.

All wiring seems to be fine too.

Help please.

Click to read more...

 

[djman37 5,000+ posts]

coils out of phase would yeild a 0 sum.

 

[skullsmasher 10+ year member]

coils out of phase would yeild a 0 sum.

They are wired properly, is that what you mean?

 

[djman37 5,000+ posts]

They are wired properly, is that what you mean?

yes.

maybe a stray piece of metal|wire down in the motor? maybe from the spider disconnecting???

wait, one coil on each SUB doesn't work?? hmm.

 

[skullsmasher 10+ year member]

yes.
maybe a stray piece of metal|wire down in the motor? maybe from the spider disconnecting???

wait, one coil on each SUB doesn't work?? hmm.

yea, one each sub, when I hook up only one sub, one coil at a time, one coil works and the other doesn't. //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

 

[skullsmasher 10+ year member]

bump

 

[djman37 5,000+ posts]

bump

blown coils. 1 per sub. weird.

find out if your amp is mono or stereo. the ++-- doesn't matter. a lot of monos' offer that for convienence.

depending on how you had the subs wired, a stereo amp may have been to blame.

how were they wired?

 

[skullsmasher 10+ year member]

they were wired for a 2ohm load.

 

[skullsmasher 10+ year member]

bump

 

[skullsmasher 10+ year member]

bump. i dont know how to tell if the amp is mono or not, //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[skullsmasher 10+ year member]

its a 2ch rockford fosgate p6002 amp, so 600wx2 or 1200wx1

 

[skullsmasher 10+ year member]

bump

 

[djman37 5,000+ posts]

its a 2ch rockford fosgate p6002 amp, so 600wx2 or 1200wx1

I missed the model in your first post. Rockfords model numbers i think were close to MAX numbers.

here's a quick link

http://www.cardomain.com/item/ROCP6002

150x2 @4 ohms. it does have VERY low distortion, so I'd figure in a good bit of headroom.

how did you have the wires coming off the amp? 1 set to 1 sub, 1 set to the other, or 1 set to the left coils 1 set to the right maybe?

 

[skullsmasher 10+ year member]

I missed the model in your first post. Rockfords model numbers i think were close to MAX numbers.here's a quick link

http://www.cardomain.com/item/ROCP6002

150x2 @4 ohms. it does have VERY low distortion, so I'd figure in a good bit of headroom.

how did you have the wires coming off the amp? 1 set to 1 sub, 1 set to the other, or 1 set to the left coils 1 set to the right maybe?

I had it like the first and second wiring options on this page, top one and the one below it.

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp?submitted=true&woofer_qty=2&woofer_imp=3

Whatya think?

 

[skullsmasher 10+ year member]

bump