I am experiencing some really weird noise from one of my subs, it has just started recently. I have two fosgate punch hx2s, wired up to a 1001bd, wired up for a 2ohm load, which makes them each recieve 500 watts rms, fairly common setup, it is all perfect match pretty much. I have had these in my car in some boxes that I built for like 6 months or so now, when I installed them my friend tuned them for me since he has a very good ear for it (works at a shop, much more experience, I have no shame in saying hes better than me), so he set my gain and crossovers. Well a few weeks ago I was thinking, wow I never reset them after my subs broke in, because for some reason these subs took like weeks to really fully break in. So I turned up the gain and tuned it all myself, a couple of weeks later I noticed that on sub sounded really distorted. It was getting bad, so I unplugged it and took the meter to it assuming it was a blown voice coil. Ive had it out for a while, and tonight I was thinking about how strange it seemed that one would be blown so badly and the other would be absolutely perfect, so I hooked it all back up and metered it from the amp, figuring maybe I did the math wrong, I was right, I checked it and it all read out at 2 ohms. Now I could just be being stupid and the ohm rating doesnt mean anything about it being blown, but I thought it would be directly related to it. So what are other things that could be going on, it sounds like it could have possibly just blown a gap into the box and is letting some air in, but what do you guys think it could be?
swap the subs and see if the same driver sounds distorted when switched...this will isolate it being a bad driver or a blown channel in the amp or box problem....
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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979