Quad cab dual 10 box

AngryRams · Apr 25, 2018

Hey guys

First time truck owner, and first time dodge owner here. Purchased my truck last friday, and I couldn't be happier!!!!!!!!!!!!!!!

I went out and had some subs and an amp installed yesterday, typically I do it myself but since I spent a small fortune (for me) on the truck I figured I would want it done "professionally".

I have a kenwood xr601 amp pushing two 10" JL Audio w0v3 subs under the rear seat.. and quite frankly I am displeased with the lows...

I think it's just the box so I was wondering if anyone has experience with a different box that can actually hit any frequency below 40hz lol

Demon-HeMi · Apr 25, 2018

AngryRams said:
Hey guys

First time truck owner, and first time dodge owner here. Purchased my truck last friday, and I couldn't be happier!!!!!!!!!!!!!!!

I went out and had some subs and an amp installed yesterday, typically I do it myself but since I spent a small fortune (for me) on the truck I figured I would want it done "professionally".

I have a kenwood xr601 amp pushing two 10" JL Audio w0v3 subs under the rear seat.. and quite frankly I am displeased with the lows...

I think it's just the box so I was wondering if anyone has experience with a different box that can actually hit any frequency below 40hz lol

my fox box in my 03 hits below 40, actually does quite well on lows, the problem is the typical underseat box for the quad cabs doesnt really give you enough air space for low lows, my center console setup drops amazing lows...

in my 08 i have a bed liner box but like you said it doesnt drop LOW notes

autokraftgt · Apr 25, 2018

Like mentioned above, there isn't a bunch of room under the rear seat but enough for certain 10's, and a select few 12's to live comfortably back there.
Kinda like any install, make sure the enclosure volume is enough for the subwoofer(s) being ran. I don't know the requirements for those JL subs, or the box being ran with them but those two need to live in harmony to dig deep and sound good doing it. My old install had a fox box with two 12" Arc Blacks and that combo dug really deep and sounded pretty darn good.

Witch · Apr 25, 2018

if you are running them at 4 ohms you are under powering the subs

that amp will only do 600 in 2 ohms

400 watts RMS x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms)

Don't take for granite that a professional install all that

Not saying you did not go to a reputable shop, saying there are many that are not

That JL should hit like a club and quite frankly be way over powering your factory radio

AngryRams · Apr 25, 2018

Witch said:
if you are running them at 4 ohms you are under powering the subs

that amp will only do 600 in 2 ohms

400 watts RMS x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms)

Don't take for granite that a professional install all that

Not saying you did not go to a reputable shop, saying there are many that are not

That JL should hit like a club and quite frankly be way over powering your factory radio

I'll check with them. Or see if I can find a meter and check what they're wired to.

They hit fine it's just the lows are essentially non existent.

Does the line out converter make a difference as to what functionality it provides?

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BWL · Apr 25, 2018

If you upgraded the factory sub and they did a line out converter off the factory sub wiring you won't get the low lows because they're cut out from the factory radio to avoid damaging the factory subs.

AngryRams · Apr 25, 2018

BWL said:
If you upgraded the factory sub and they did a line out converter off the factory sub wiring you won't get the low lows because they're cut out from the factory radio to avoid damaging the factory subs.

That's actually probably what the issue is. I'll get with them today.

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TomT · Apr 25, 2018

AngryRams said:
That's actually probably what the issue is. I'll get with them today.

If your truck came with the factory Alpine system and they used that sub out for signal, then that’s your problem right there. I recommend adding a PAC Audio AMPro unit to get a full range sub signal into the amp.
https://pac-audio.com/catalog/audio-interfacing/ap4-ch41

AngryRams · Apr 25, 2018

TomT said:
If your truck came with the factory Alpine system and they used that sub out for signal, then that’s your problem right there. I recommend adding a PAC Audio AMPro unit to get a full range sub signal into the amp.
https://pac-audio.com/catalog/audio-interfacing/ap4-ch41

Do not believe it came with the Alpine system

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TomT · Apr 25, 2018

AngryRams said:
Do not believe it came with the Alpine system

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Does it have a center channel or ceiling mounted speakers?

AngryRams · Apr 25, 2018

TomT said:
Does it have a center channel or ceiling mounted speakers?

Nah

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bigred74 · Apr 25, 2018

What box do you have?

AngryRams · Apr 25, 2018

bigred74 said:
What box do you have?

Just some prefab

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TomT · Apr 25, 2018

AngryRams said:
Just some prefab

There are great (Net Audio) and crappy prefab boxes. I’m running a Net Audio box with a single JL 12W6V3 and it will get down low and loud if I ask it to.

bigred74 · Apr 25, 2018

I bought a custom fiberglass box and jl w3v3 but so far it doesn't sound as good as I thought it would. Hopefully I just have some more tuning to do on the amp and it's not the box

AngryRams · Apr 25, 2018

bigred74 said:
I bought a custom fiberglass box and jl w3v3 but so far it doesn't sound as good as I thought it would. Hopefully I just have some more tuning to do on the amp and it's not the boxView attachment 126466

I was thinking about bringing this back and buying the JL stealth with two thinline 10s... It's just pricey

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TomT · Apr 25, 2018

Have you checked to see if there is a subsonic filter anywhere in the signal chain?

AngryRams · Apr 25, 2018

TomT said:
Have you checked to see if there is a subsonic filter anywhere in the signal chain?

I'm sure there is one on the amp. I'll check when I get back into town later today.

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Witch · Apr 25, 2018

AngryRams said:
I'll check with them. Or see if I can find a meter and check what they're wired to.

They hit fine it's just the lows are essentially non existent.

Does the line out converter make a difference as to what functionality it provides?

Sent from my SM-N950U using Tapatalk

Not sure what they used ? Agree with Tom The Amppro is beastly and will give you a full preamp out section & a bass knob

On the cheap you could use a LC2i LOC that will give you an Accu bass feature that is designed to defeat the factory roll off

bigred74 · Apr 25, 2018

He said he doesn't have alpine system tho so would there still be roll off in the factory speakers?

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