Recent content by mjlorenzo

Hey I just purchased a JL Audio J2 360.2 amp (360W RMS bridged) to drive my sub. At $118 it sounded like an awesome purchase but now I've noticed they rate the amp 1% THD @ RMS power. I've definitely heard strong indications 1% THD indicates a crappy amp. Can anyone clear that up for me?

Hey I'm lookin for a 2-channel amp to power 4 Boston Acoustics S65RC coaxials in my car. They're rated 35W RMS but if I'm reading correct you can supply more wattage to speakers granted there's little distortion so I'm thinking 50W RMS isn't going to kill them. (?) EDIT: Forget it that was a...

Well first I need to know if my current amp is fixable. I have a Profile AP600 and I went to turn the gain control up a little and the control actually broke. It's a screw slightly recessed in the amp's casing. The screw is supposed to stop turning when it reaches max/min but when I turned it to...

It's in a 2002 Civic sedan, rear facing in the center of the trunk. I'm gonna start with the polyfil but I think I'll also use sound insulator on the trunk and rear deck. From what I'm reading around the web tho it sounds like the symptoms of an overly small box match what I'm experiencing so...

I just examined the box I currently have and it's possible it's more like 1cu ft internal volume which makes me think my problem is possibly not totally the box. I'll try throwin some polyfil in and hope for the best but could it possibly be just shitty components? Here's the setup: Profile...

I'm thinking about replacing the sealed box I currently have with a larger one. I think the box I have is roughly .75cu ft and the sub is rated for 1.25cu ft. The result is pretty bad, the bass is muddy and it won't hit lows nearly as hard as higher frequencies. 1. When considering the volume...

Polyfil?

The manufacturer recommended is actually 1.25cu ft. Still wouldn't make a difference?

I just installed a 12" Infinity in a Q-Logic sealed box but I'm pretty sure the volume of the box is only .75 cu ft. Manufacturer recommended is a full cube. How would mounting in a larger box affect my sound? It sounds pretty good with the current setup tho it's my first install so I don't...

Yeah that's a really good point actually. It's a pretty small single 12 box. You think two strong bolts to the frame in the front (it's gonna be forward firing) should do it? I think there's enough level sheet metal towards the back of the trunk to bolt onto. And while I got your attention, is...

Is it not necessary to secure the box to the floor? Other than the obvious security benefits I thought it would improve SQ or something. If I can just secure the box to the back of the trunk or something so it doesn't move that simplifies things greatly.

Back of the seat is a good idea, yeah they do fold down. The main problem tho is still how to mount the sub.

Hey guys I'm installing an Infinity Reference sub in an 02 civic and I need a little advice. First off I need some help with amp and sub mounting in the trunk. I thought it would be as simple as bolting the box to the floor of the trunk and the amp to the side frame but it turns out my entire...

This isn't quite about box construction but this is my first sub install so I'm stickin w/ a pre-made enclosure. I need a solid sealed box for a 10" sub roughly .75 cu ft. I'll take recommendations for a manufacturer but if anyone has a particular box in mind, no need to raise your hand, just...

Hey what up the name's Mike, just started gettin into car audio shit in the past year or so but the budgets been tight so I couldn't afford most of the stuff I wanted until now. I got a ton of questions so you'll prolly see me a lot on the help forum for a while but to save time, can anyone...