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aquehl1993 11-28-2012 02:58 PM

New to forum and looking for opinions
4 Attachment(s)
Bought a 02' wrangler to this summer with the 4.0 i6 and 5 speed manual transmission. Haven't had the opportunity for a whole lot of mods but managed to lift it later on during the summer with skyjackers 4" suspension lift

Santa still delivers in the summer

Attachment 182619

After rear lift was installed

Attachment 182615

Front and rear installation

Attachment 182616

Got around to purchasing some 33x12.50x15 tires on crager soft 8 15x8. I also got tired of the ugly grey fenders and bought some spray paint. Not to smart I know but was before I found out about spray on bed liner. This will be changed soon once I find some free time.

Attachment 182617

My next project is to improve the speakers. What I have is terrible when the top is off. But here's what I am planning on going with.

Head unit:
Ken wood 50wx4. Kdc-mp345u (already installed by po)

Polk mm525 in front using the adapter plates
Polk mm651 in the sound bar
Powered by Polk 600w class ab 4-channel amp. Planning on locating this amp behind the dash to avoid alot of rewiring to new speakers. Benefit of these is they are marine quality.

I got a steal on a okay sub and amp from bass inferno. I know it's not excellent but due to thefts problems I am not trying to waste huge money on a sub and amp.
Bass inferno biw12d4 sub
Bass inferno 1500w two channel amp.
The amp is going under the rear seat and I was thinking about putting the sub in a single 12 premade truck box? Any better suggestions?

Also to be more theft deterrent I was thinking about screwing everything down with torque screws.

Just looking for some feedback if I am heading in the right direction and if this system would be sufficient for going topless.

aquehl1993 11-28-2012 03:00 PM

Oh and sorry for any misspellings or use of bad grammar. Autocorrect is not very forgiving.

McDaniel 11-28-2012 03:34 PM

based on a smaller system i installed in my jeep I believe you will be fine.

McDaniel 11-28-2012 04:29 PM

o and I almost forgot, welcome to the forum.

Wattapunk 11-28-2012 08:20 PM

Welcome to WF. Personally, I think the stereo will be overkill. That 600w Polk audio amp is plenty for your system. Use your stereo to power the dash speakers. Use the front channels of the polk audio amp for the soundbar then bridge the rear channels for the sub. Mount the 600w amp under the rear seat, no torque screws needed. Not a good idea to mount that amp behind the dash due to size and too many electronic components that would be exposed to the heat and metal frame of the amp. I think you are better off with a quality 10" sub like kicker or JBL because there may not be enough room to build a box for a 12" sub behind the seat with the right cubic ft needed.

Coastiejeep 11-28-2012 09:15 PM

Welcome first of all, yeah I think that might be over kill. I would replace the speakers, then add the ampif you think its needed. I have kicker speakers powered by an alpine head unit 4x60 I think and 12 kicker comp with a 400x1 amp. I run on the highway (65-70 mph) top and doors off and it sounds great.

aquehl1993 11-28-2012 11:51 PM

Well when I looked at the specs for the bass inferno amp and its runs at 375w rms at a four ohm sub even though its rated for 1500w max. So I feared it not being powerful enough.

And I read on another tread that Said i should try to match the rms rating of the speakers to that of the amp. And the speakers are rated at 100w rms. even though my receiver puts out 50wx4 it's rms is only 22w.

Am I thinking about this the wrong way?

geoffmarton 11-29-2012 01:09 AM

Anything rated 1500w max, or even 375w RMS, for any motor vehicle is either overrated (RMS @??* THD??) or overkill, unless you plan on competing.

A 12" woofer is too big to sound right, unless you're in a BIG venue with a LOT of real power. 8-10" is recommended as the best solution for non-competition subs. It costs a TON of $$ to make a bigger sub sound great.

I hit 102db on a meter - and needed the windows to be 1/2 way down, on 200w total power, and was damn near distortion-free at full volume with my best setup, many years ago. Two 10" subs pushed more clean, deep bass than anyone ever needs. To give you an idea of what 102db is like in a car, keep in mind that it hurt to be inside, and that with the windows up, the pressure was so significant that we dropped to 96db. That's a BIG difference. That was in a '78 Monte. A ton of work went into making it completely rattle-free.

You need to decide what you're after. Are you a true audiophile, or just want it really loud? Are you just trying to be able to hear it easily at speed while topless (the Jeep, not you!)? Are you trying to rattle the windows of the car next to you without regard to sound quality? Each needs a different setup.

I'm only after simple in my Jeep, and am nearly done with my 'system'. I have a mid-line Sony head unit, with a Quadratec replacement sub in the factory enclosure, and with the factory amp pushing the sub. Factory speakers will eventually be replaced, but they're OK for now. Basically, I can listen to tunes easily at speed topless without distorting, and my Jeep is the rolling boom box for the beach and the neighborhood parties when needed. It's a lower-case boom, for sure, but it sounds OK. Replacing the factory speakers in the dash and soundbar will clean things up considerably. There's at least a chance I'll use the head unit's pre-outs to expand the system in the future for times when I have open space in the back to carry it. I'll make it plug-and-play if I go that way - two plugs on a box, one for audio feed, one for power. Take it out and leave it behind when not using it, and use the head unit to select between Jeep speakers, box speakers, or both.

It *IS* a good idea to power dash speakers with the head unit and the soundbar and sub with a separate amp. I haven't gone that far yet.

Wattapunk 11-29-2012 06:16 AM

I highly doubt that amp really even put out anywhere close to the stated 1500 watts. Remember that more is not better, especially if it's just loud distortion. You cannot expect our Jeeps stereo to sound the same with the top off vs on and adding that 2nd amp will just cause unnecessary drain on the battery.

aquehl1993 12-02-2012 08:12 PM

would this sub be decent if i were to run it off the two bridged channels from the that amp? i was even thinking of putting 2" legs on it and making it fire downwards. Rockford Fosgate R2S-1X10 Prime R2S Single 10-Inch Shallow Loaded Enclosure: Electronics

or i was thinking of going the bazooka route.

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