So hopefully someone on here could help me because I am going crazy! I have had a Rockford fosgate P400-2 amp pushing my 2 12" W3 JL Audio subs forever now, no problems at all. I recently went on vacation for a month and took my subs out of my car while I was gone. But the amp was still installed. When i got home, excited to listen to my system, I put the subs in the car and hooked them up to the amp....NO BASS AT ALL! I checekd everything...amp still getting power, changed out the main fuse under the hood, and yet no BASS! Only thing I can think of is when I did plug in the subs the two speaker wires made a wuick spark??? ANY IDEAS?!?!?!?!
What the hell?!?!?
- Thread starter 1sikyukon
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blueflamed03
Elite Member
check the woofers with a seperate working system. Like a home setup. Isolate. Then, amp may be on, but you sure it didn't get shorted while installed without subs? Isolate first woofers, if they work, swap out amp with known working amp...
OKLAGMCRUISER
Need drop...send $
word...
iin the future turn off ALL power before hooking anything up and once system is wired properly/completely THEN bring power back to the source.
Thanks for the fast reply this is the thing, when I connected the subs in at first they car was off completely. they didn't work so I turned on the car and that's when it sparked? I know the subs are fine because after all they were just sitting in my room for a month they couldn't have been damaged, it has to be something with the amp???
AtomicHoe094
Atomichoe094
what kind of headunit are you working with here??? the rcas could of grounded out your HU and possibly blew out the RCAs, idk tho just a thought, are you getting any sound outta the amps?
blueflamed03
Elite Member
check fuses on amp? or on power wire to amp?
Nfamous60
Full Access Member
wow the fuse should be the problem on the amp make sure everything in your trucc is fine spark could go both ways i just had this happen to me TWICE the first time i blow main fuse to the BCM. second which was less then a week ago blew security fuse and trucc wouldn't start.
I may have misspoke, the newer fosgates apparently require an external fuse. Try to get anything to work off of the amplifier, home speaker, etc. If not, hopefully you fused it somewhere between the battery and the amp and it blew that fuse. If not, $329 at crutchfield.
http://www.crutchfield.com/S-Ui2mfe7B2L3/p_575P4002P/Rockford-Fosgate-Punch-P400-2.html
Conor
"Bob's your Uncle"
A fosgate amp should have an internal fuse. Those amps usually are pretty cheap to fix. However, you could use this opportunity to buy a good amp like a JL 500
coopiesb
Full Access Member
or the jl 750 hd
mdtahoe
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While you had the subs disconnected was the amp still powered up? If so if the speaker leads were touching while the subs were out it probably destroyed the amp because that is no fused. Only the power circuit is fused. You should be able to send it to Rockford to get it repaired.
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