Amplifier messed up?

while driving home today, my sub and amp cut out. once home i went to check everything, all connections were tight, the fuses were good, no screwed up cables. after further checking, it seems that the amp and sub would output for a second or two after the car was turned on, then after that it would cut out. upon checking the amplifier initially, it was still recieving power and was on, as was the sub. i checked all connections from the backside of my headunit as well and they were all tight and cables were in good condition. ideas? Amplifier: Concept International CCD1200 Headunit: Pioneer Premier DEH-P740MP Subwoofer: Sony Xplod 10" 1200w Vehicle: 1993 Ford Bronco

amp and sub are listed at the bottom of the first post. Amplifier: Concept International CCD1200 Headunit: Pioneer Premier DEH-P740MP Subwoofer: Sony Xplod 10" 1200w Vehicle: 1993 Ford Bronco Amplifier is 1 ohm stable, and is currently running at 4 ohm in line with the sub. i havnt had a problem in the 8+ months ive been running this sub and amp combination until now.

Check these 3 things.... Ground(continuity), 12v+ at the battery, Sub wire pair (short). ground is obvious, but i say th eother two because at one point my battery corroded and the connector for the amp's 12v+ line at the battery had come undone. the sub wire happened to me recently as well.. make sure there are no shorts in it, for example mine was jammed in the seat rail underneath the seat, and it was grounding the wire. 2000 Chevrolet S10

Premier DEH-P860MP

JL Audio XR650-CSi components

Boston 4x6 splits

JL Audio 10W3v2

Alpine MRP-M350

Clarion APA-4162

Does the protect. light come on on your amp? Concept amps don't have a great reputation for reliability. I ran a CCD2400 for about 6 months at 2 ohms before it started acting up. When I carried it back to the dealer he told me he was no longer selling them because 50% of the ones he sold came back and had to be sent in for warranty repair. Gettin' deafer by the day.......96' GMC yukon-Eclipse CD 5442HU

MA Audio HK4000D-Digital Designs 9515F

150+db with one woofer...DD rules!!!!

Forgot to mention, check impedance on your woofer to make sure its' just not blown. Sony hit the nail on the head when they designated them as Xplods'!!!!Gettin' deafer by the day.......96' GMC yukon-Eclipse CD 5442HU

MA Audio HK4000D-Digital Designs 9515F

150+db with one woofer...DD rules!!!!

Have to agree with ddsubman, check for a blown sub. don't forget "It's a Sony"!!

good points by ddsubman and stealth raptor...i do keep forgetting it is a sony, and there is no "protect" light on the amp(yea, nice design concept). ill check all of these things later today. im hoping its only the sub, afterall i have had it for almost 2 years now. thanks for the suggestions

Yep, could be the amp, could be the speaker.  If you have another speaker you could try hooking it up to see if the amp functions.  You cannot always tell if a speaker is blown by measuring the DC resistance through the voice coil.Support the12volt.com

well i checked the speaker and the amp, and it was the amp. i hooked a different speaker up to it and got no sound out of it, and proceeded to hook my sub up to my home theatre system and it played with no trouble. now, onto the next step of finding a new amp. my friend is recommending the Kicker KX1200.1, im wondering what all of you would recommend.