Is my amp blown?

[09Alti 10+ year member]

Ok guys I need some help. Sorry if I sound like a newb, but I kinda am.

I have 2 Kicker CVR 12 D4s and had them running off of a Kicker SX900.2 and had pretty decent sound for what the equipment is. I recently traded my amp for a new one (I won't say what brand it is yet) that is rated at 1500 @ 1. The subs are wired at 1 ohm. When I first hooked up the new amp, I didn't have hardly any sound, so I played around with it some, unmounted the subs and checked my connections etc, and it started working (not sure what I did to make them work, it just worked). So I went out into an empty parking lot to tune the settings and junk and had it sounding ok so I left the lot. On the way home it quit working again. I checked everything again, put it all back exactly how I had it, and it worked again. They worked for about a day and a half and yesterday it quit again.

So tonight I pulled the subs out of the box again and checked the resistance of each coil with a DMM. All 4 coils read exactly 4.5 ohms, so I would assume that these are ok since they're dual 4s right?

I checked the voltage coming from the speaker terminals to the subs on the amp and only see 0.05v. I checked my power wire voltage at the same settings on the DMM and it read 12.5v (car off, radio on and volume at 3/4 volume) I would figure that the voltage coming from the amp should be higher then .05v right?

Another funny thing that I noticed is that with the sub hooked up, I checked the resistance on coil 1 (the one wired to the terminal cup on the box) and get anywhere from 19.x ohms to 22.x ohms, is this normal?

I have the gain at near full and never changed it before/after getting any of the readings from the DMM.

So are these normal readings I should be seeing from the amp? Or what am I doing wrong?

Sorry for the novel but I wanted to give as much info as possible. I can say the name of the amp if needed but I'm afraid there may be some bias on the answer I get if I say the name.

Thank you in advance for any help I can get here, as I am out of answers.

Jeff

Click to read more...

 

[infamous_e46 5,000+ posts]

your subs are fked

 

[subzero 5,000+ posts]

I would redo everything and make sure your not crossing the wires in the sub box. This mystery amp is stupid, Just tell us what you bought so we know if it's junk. Junky amps can kill subs. Keep that gain at half and make sure all the settings are set. Try one sub at a time to see how is handles. How did you wire that box up? Can that new amp handle the load you put on it? Lots of factors you need to address

 

[09Alti 10+ year member]

Ok well the amp is a Sundown SAZ-1500D, which is rated 1500 @ 1, I have the subs wired parallel and when I check the resistance at the terminal with them both hooked up, I get 1.9 ohms.

 

[midnightg35x 10+ year member]

I checked the voltage coming from the speaker terminals to the subs on the amp and only see 0.05v. I checked my power wire voltage at the same settings on the DMM and it read 12.5v (car off, radio on and volume at 3/4 volume) I would figure that the voltage coming from the amp should be higher then .05v right?

Sounds like you are using DC measurements to check the speaker terminal outputs. You want the number to be close to 0 for this //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. Switch to AC when you are looking for the voltage at the speaker terminals.