98aurora Posted November 15, 2012 Report Posted November 15, 2012 I've had a sundown audio sa12 dvc 4 ohm for about 2 weeks and I've had it on a hifonics hfi 1500 running at 1000 watts at 2 ohms. And its been fine the whole time. I built a new box for the sub, hooked everything up and it sounded amazing for about 2 minutes then all of a sudden I hear this horrible rattling/popping noise. So i took the sub out and played it free air and its popping and rattling and sounds like crap. I pop tested with a 9v and it was fine, no scraping when i push on the cone, I tested both vc with a DMM and they read fine. Is my sub blown or is something else the problem?
98aurora Posted November 15, 2012 Author Report Posted November 15, 2012 I also hooked up my old alpine mrp m500 to it and it did the same thing, then I hooked up a random sub i had in my house to it and it did the same thing which makes me think its not the sub. But I checked all the wiring and everything is fine
soundstream15 Posted November 15, 2012 Report Posted November 15, 2012 hmm..if its doing that with a different sub as well then that leads me to think your hooking something up wrong... also since your running that amp at 2ohm its prob around 700rms..its overrated so power wise your fine
Rockford96 Posted November 15, 2012 Report Posted November 15, 2012 i had th same thing in a amp of mine it ended up being a bad ground in my head unit that sent it to the amp making the noise weird but a new ground fixed it My setup, Digital Designs M80 3 Re audio 10's ported tuned to 36 hz Kenwood x-696 SHCA 0 gauge Polk audio coax running off hu
98aurora Posted November 15, 2012 Author Report Posted November 15, 2012 yeah I thought it was a bad ground too but I also have 2 other amps hooked up for my full range speakers and they sound fine
98aurora Posted November 15, 2012 Author Report Posted November 15, 2012 and its weird because everything was working fine for about 2 minutes, then all of a sudden it just went nuts
zack_e89 Posted November 15, 2012 Report Posted November 15, 2012 So the sub's readings are fine.....hmmm....have you checked your RCA's? How about some pics? 97 Suburban 8 custom PSI Platform 3 18's
98aurora Posted November 15, 2012 Author Report Posted November 15, 2012 No I haven't checked them. What could be wrong with them? I'll ad some pics later i gotta leave for work in a few minutes lol
zack_e89 Posted November 15, 2012 Report Posted November 15, 2012 No I haven't checked them. What could be wrong with them? I'll ad some pics later i gotta leave for work in a few minutes lol Well I had this problem one time where the tip of my RCA was broken off at the input of the amp and it took me forever to figure out why my sub sounded like shit, maybe something like that happened. It sounds like you need to go through and carefully check everything. 97 Suburban 8 custom PSI Platform 3 18's
98aurora Posted November 15, 2012 Author Report Posted November 15, 2012 But it played fine for a couple minutes then all of a sudden didn't. I don't think the RCA's would just stop working that fast ya know? Idk im so confused right now
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