System Disappointment... Again

Okay, I suck at this install thing. I'm about to take it to a shop.

Added the sealed box and Avionixx amp today... USB4065 is scratchy again whereas without the Avionixx amp it was fine. Perhaps the added power pulled through the power wire is causing issues with the RCAs or else having them both grounded at the same location with the Avionixx installed now causes a problem.

As for the sealed box & amp... complete disappointment, doesn't sound clean at all, the ported box sounds much better. Still no where near as loud as would have been expected, people with the 12k and 400W talk about change bouncing in their cup holder, yet I get none of that with the gain up at 1/2 and the Suboutput on the 7995 to +15. Not real sure on what could be causing the issue here, but it is definately the more frustrating of the two... maybe the use of the bolt and nut method that someone here used isn't working well at transferring the power? *shrug* I guess I will be looking for a terminal cup locally wherever those might be found, I'd hate to pay crazy shipping just for that.

man.. I feel like I'm looking at my twin...


i just put my TRU amp in the classifieds...

Bump for replies! I've asked for local yocals here in Georgia on the SIN forum for Edesign to help me out. Hopefully I can meet up with one of them for some help. I feel like a complete idiot honestly. Maybe its just tuning that needs help... I know the USB4065 is a weak link, but right now it all sounds like **** :)

hey i work on systems and stuff like that, if u ran ur rca's on the same side as the power cable it will be static....try that..

What kind of primary power wire are you running to these amps. If its less than 4 AWG your wrong. Furthermore you can find terminal cups for speaker boxs (I hope thats what you mean) can be bought from Crutchfield for relatively cheap. Secondly lets look at power to the sub. If your running some tiny speaker and trying to push 400 watts all your gonna get is crap. Like blowing a golf ball through a garden hose. Also need to look at your enclosure. How "sealed" is it. When you gently push down on the cone of the speaker it should slowly rise back up. Key word SLOWLY. If it comes up quickly you have an air leak. just some starting points.

Less than 4AWG your wrong? Waddya mean... its 0AWG, thats less than 4 :)

I'm running an Elemental 12A, it isn't really a tiny speaker... and I'm pushing 800W to it.

I'll test how sealed it is shortly... its liquid nailed on all edges.

try setting your deck to 100hz, this should improve sound quality. i just use this to judge if its an enclosure or sub/ amp problem.

Originally posted by DevlynSyde
Less than 4AWG your wrong? Waddya mean... its 0AWG, thats less than 4 :)

I'm running an Elemental 12A, it isn't really a tiny speaker... and I'm pushing 800W to it.

I'll test how sealed it is shortly... its liquid nailed on all edges.

Yoru running Oght? Thats a bit xtreme but ok. Hows the current draw? Check the input settings. I know my 7893 has HPF and LPF built in....maybe your running to high a cross on your LPF. I'd aslo check the filter settings on the amp. I'm sure you have but double check anyways. Make sure you are at LPF and crossed at no more than 80. You may even want to cross it lower to emphasize the low range since the range between 60~80Hz is not detectable if its not being replicated. Like I said just some starting points.

Originally posted by DevlynSyde
Less than 4AWG your wrong? Waddya mean... its 0AWG, thats less than 4 :)

I'm running an Elemental 12A, it isn't really a tiny speaker... and I'm pushing 800W to it.

I'll test how sealed it is shortly... its liquid nailed on all edges.

Maybe you need different woofers.
Try two W3v2's in a sealed box with about 1.0-1.25 cu ft. per speaker.

That should make your change rattle around.

Those would make your brain rattle...a lot more than a little too.

Originally posted by CrazeD_SpecV
Maybe you need different woofers.
Try two W3v2's in a sealed box with about 1.0-1.25 cu ft. per speaker.

That should make your change rattle around.

No, that sub just doesn't perform well in a sealed box. Mine was the same way, just sounded kinda weak and it was pretty pathetic on the low end (like most other sealed subs). And his sub has the displacement of 2 12w3v2's, they will not get louder than the A I can tell you that. My friend has 2 12w3v2s in his car and they can't hold a candle to the A in any way (price, space taken up, SQ, SPL, etc).

Devlyn - my 4085 had the exact same problem. I just had a little warmup static when it was by itself, but it wasn't too bad. When I added the second amp that's when it got horrible, the static would come and go with the bass hits so I think it does have to do with the extra current draw. I honestly don't know how that's possible, but you never really know with car audio I guess.

Wtf, how did this change from being about an install issue to recommending f'ing JL subs... please, some W3v2s? What the hell... why would I want to downgrade?

1/0 is not overkill, screw jl, if you are not happy with the woofer just get a ported box, that is simple and solves the problem, as for change bouncing in the cup holder of one of those woofers-yea right, bass is all relative to what you have heard, this woofer might not be that loud to you because you have heard better, pm me some more info about all of your sysytem settings and ground locations and any info about the whole thing and i can fix it for ya devlynsyde

Originally posted by thumper10s
1/0 is not overkill, screw jl,

My 2 12w6v2's make my steering wheel vibrate enough that you can't read the Nissan emblem and vibrate the soda in my cupholder...I won't "screw" my JL's :D

Originally posted by FLSpecV
My 2 12w6v2's make my steering wheel vibrate enough that you can't read the Nissan emblem and vibrate the soda in my cupholder...I won't "screw" my JL's :D

Word...JL

wow, my idmax's make my roof flex over 2 inches and shakes all the snow off my car and shake my eyeballs so i cant see the road, big frickin deal

p.s. my sunroof sliding cover also came all the way open

Since when was this at all about JL vs the world? Damn, JL subs are nice, whatever. JL subs can make your eyes spin, so can everyone elses. Can we drop the sack riding, noone from JL is here and I'm not looking for a new sub.

ok cool

hey dev, how many subs are you running 1 or 2? you may have said but my mem sux.
edit: if you've got 2 going on seperate amps there may be phase issuses. i'll be looking for ya.

Half your sound will come from a quality enclosure. At about half push, my 1 JL 10w3v2 vibrates my rear view and side mirrors to the point that I cannot see out of them.

My box is also airtight. Completely. Uterly, airtight.

my mtx shakes everything in my car so i gotta go get some sound deadener. my buddies and i did a test a while back with my mtx and my buddies jl subs, whos was loudest and whos was cleanest, all 5 of us agree that the mtx was better, my buddy now wants to sell his jl and by an mtx. JL is way over rated, they are really efficient subs that will be louder to a point but can't handle all that much.

Originally posted by specracer2
my mtx shakes everything in my car so i gotta go get some sound deadener. my buddies and i did a test a while back with my mtx and my buddies jl subs, whos was loudest and whos was cleanest, all 5 of us agree that the mtx was better, my buddy now wants to sell his jl and by an mtx. JL is way over rated, they are really efficient subs that will be louder to a point but can't handle all that much.


JL what ? JL has 3-4 levels of performance. anyway, lets stick on topic.

I think that amp is just the root cause of many problems for you. Seriously consider picking up something else. Maybe you can grab placs TRU amp in the classifieds :D

Without a doubt, that sealed box is not going to get as loud. I would make some adjustments to your setup and go back to the ported box if necessary. 01 SE has his cranking and makes me want to get to building my ported box stat!