my first eq

Sure your amp can handle that, no problem.  Sounds like you may have a setup issue if the amp is shutting down.  What is the system voltage at the amp when it shut down?  How did you set the gain?Support the12volt.com

I'll measure the voltage in a little bit. The gain is set at 0 on the amp, I did everything through the HU (bass boosted like I said, and sub out boosted to +8 at max, usually +4). I haven't said this yet, but the box it's in is 1.4 cu ft. Either way, I went to check the gain when I got home, and the gain knob (aluminum) literally burned my fingertip when I touched it to check it. I'll go play around for a little bit with the multimeter and see what happens.2003 Chevy Cavalier coupe

Didn't think it'd matter than much but thought I'd mention it anyways...I live in az, and it's about 105-110 degrees outside during the day and this is mounted on top of my box in the trunk, and I don't run ac usually.2003 Chevy Cavalier coupe

Under no load from the amp and sub, the system reads a fairly constant 13.8v with the car on. Under full load (max listening volume with sub-out set to 10) the system reads 13.6v +.1 -.3 When the amp went into thermal protection, the system read 13.8v again, then when it came back on, 13.6v.2003 Chevy Cavalier coupe

OK, so it's not a voltage issue.  That's good.  It is possible the amp cannot handle the extreme heat in AZ during the summer.  Please read the how to set your gain sticky and make sure you have set it properly, but it should not be too hot to touch, so maybe it is simply overheating.Support the12volt.com

Oh, and 1.4 cuft is for one woofer or two?  If two, then it is a little small for a sealed enclosure, if one, then it is very large, and in fact you could port it if you want more low end output.Support the12volt.com

It's for one woofer, but it sounds nice and smooth and clean. I had this sub previously in a good box built for a Qts of .707 (.9 somethin cu ft) and it just wasn't what I wanted out of the sub, so this box was kind of experimental, as it's only the second box I've ever built. I'm gonna go back through probably tonight and retune it all again. Maybe I'll magically find the issue with the amp, lol.2003 Chevy Cavalier coupe

I meant to say Qtc.2003 Chevy Cavalier coupe

Ok, that's a huge vent...I'm just gonna stick with what I have for now...when I get my comps and I put in my second amp and amp rack I'll just build another box then. Probably in a couple months is when I'll be ready to do it, til then I'll just suffer without the bass. Also, I went and downloaded unibox...that thing is awesome.2003 Chevy Cavalier coupe