Amp turns on, and then off?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=28820
Printed Date: May 14, 2025 at 8:24 AM
Topic: Amp turns on, and then off?
Posted By: DaLynQwenT
Subject: Amp turns on, and then off?
Date Posted: March 21, 2004 at 11:07 PM
Hey, I was wondering if anyone could help me out with this.
I installed a Rockford 351M, and to my knowledge, everything looks kosher, but there's a problem, my amp turns on, but I'm getting no signal.. No sound!! So, me thinking it's my wiring, I hook my rinky dink amplifier up which has a protection light on it (wow rockford, good amp, no protection light for verification :P ) and the amplifier protection light came on.. So I then ripped apart the dash, removed the REM wire, and hooked it to the fuse box.. Nothing. The amps are getting power, because they both light up, and if they didn't have the remote wire hooked correctly, they wouldn't even turn on.. The ground is good... So I'm at a dead end road here, I have no clue...
Could anyone help me with this problem? Or give me some suggestions before I do the last resort and take her in to the local car audio shop..
I'm totally lost on this one, I've never ran into this problem before installing.
Replies:
Posted By: thapimpfromchi
Date Posted: March 22, 2004 at 3:38 AM
yea... check your rca's. happened to me once. everything was wired properly, but i got no sound. i felt like an ass when i shipped my amp out for service, got it back, they said it was fine. I checked my rca, there it was. my rca crapped out for some reason. its worth a shot. Also, check the sub connections. lol, i had a wire come off my sub before too. sent the amp in for service on that one too. (i drive like a maniac, (I LOVE THE E-BRAKE) sorry) lol
-------------
1990 Honda Civic HB:
Clarion DXZ545MP H.U.
2- 6.5" Power Acoustik interiors
Diamond Audio 600.1 amp
Diamond Audio 15" M6MKII
Pyramid PB881X 4 CH. Amp
Posted By: DaLynQwenT
Date Posted: March 22, 2004 at 9:35 AM
Think it might be the RCA's eh? I don't know how they crapped out, they are brand new out the package lol, but I'll check those out today. Anybody else have a suggestion on what it might be? Also, do rockford amps have internal fuses?? I didn't see one outside of it.. What if it blows??
Back to the subject, if anyone else has suggestions, it'd be gladly appreciated.
Posted By: jugga-nemo
Date Posted: March 22, 2004 at 10:23 AM
Rockford amps don't have internal fuses. You are supposed to place one on your power wire just before the amp. As far as the size goes, check your owners manual for specs.
-------------
5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Posted By: DaLynQwenT
Date Posted: March 22, 2004 at 12:23 PM
Place one in addition to the inline fuse or no?
Posted By: DaLynQwenT
Date Posted: March 22, 2004 at 12:27 PM
Place one in addition to the inline fuse or no?
Posted By: kiteman
Date Posted: March 22, 2004 at 12:29 PM
You could also check to see if you have a signal coming out of the radio?
Posted By: jugga-nemo
Date Posted: March 22, 2004 at 12:55 PM
You should have one in-line fuse next to the battery to protect your car, and usually, amps will have a fuse on the outside of the amp, but with Rockfords, you should also place an in-line fuse next to the amp (since it doesn't have one). That one is to protect the amp in case of a short. ------------- 5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Posted By: DaLynQwenT
Date Posted: March 22, 2004 at 7:36 PM
Oh.. I getcha. A friend of mine told me it might not be anything at all with the wiring, it might be that the REM is not getting 12 volts, and if it doesn't, it won't turn on.. Anyway to fix this? Charge? Or anything else?
Posted By: jugga-nemo
Date Posted: March 23, 2004 at 9:22 AM
I haven't heard of this being a problem. But if you would like to test it, just run your REM from another power supply with like a 5amp in-line fuse on it. That's how mine is done (just tapped into an accessory wire in the fused block for the car). Or if you have a voltmeter, just test it with that. ------------- 5.25" Components & 5x7 Coax Kappas w/Power Acoustik OV4-800
KAC 7252 powering 2 D3 8" Diamonds
KDC-MP728, KGC-4042A
Posted By: thepencil
Date Posted: March 23, 2004 at 10:07 AM
Also check the load that you are running. The 351M can only handle a 2 ohm load. If you are connecting to two subwoofers, double check on your speaker wire and make sure you have the correct polarity going to the subwoofers. ------------- Be careful whose advice you buy, but be patient with those who supply it. 
Posted By: DYohn
Date Posted: March 23, 2004 at 10:08 AM
If you are getting no sound from your Rockford, and if you connect another amp and you get a protection light, either your speaker load is way too low or your car is not producing enough voltage. What is your speaker setup?
Posted By: superstreet786
Date Posted: March 23, 2004 at 4:48 PM
Your speaker wires may be grounded
-------------
---- 1996 Chevy S10 ----
1 Lightning Audio S2.600.2 Amp
2 Lightning Audio 12" Subs
1 Lightning Audio 1 Farad Cap
|