Replaced My Blown Subwoofer! - Page 9 - Jeep Wrangler Forum
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Old 08-14-2013, 06:40 AM   #241
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Quote:
Originally Posted by louczar View Post
First off, nice thread!!! I just bought my son a 2002 wrangler and we have been doing all the maintenance on it from the axles up. That being said...

I did not know the jeep had a sub in it. His stock deck is semi functional (at best). I see where the sub should be. No surprise there is no sound coming out of it at this time. I will help him (me do the work and let him watch and learn) to update his stereo and speakers. His deck will have to be replaced!
From what I read / seen so far is that the stock amp is in the console with the sub
This leads me to my questions...

From what I read / seen so far is that the stock amp is in the console with the sub?

The amp has a proprietary interface to the stock deck (not a standard RCA out to normal amps)?

I will be installing a new deck, speakers (in dash and sound bar), sub and a small bridged mono amp that will have to have a built in crossover if the stock amp will have to be replaced with the deck. Everything will be of a proper size to fit in existing stock space.

I have looked at lots of the links from this thread and will be getting my list for his (my...lol) final selections.
Yes the stock amp is in The subwoofer box along with the sub. It is powered by the rear speaker leads. Unless he is looking to win competitions I would say just stick with the stock amp and the 1 ohm kicker that I listed previously. I run a stock head unit and that sub has plenty of bump. I did an install this past weekend for uponone, another forum member. I did the dash speaker brackets from Nalin (also a forum member) with the 5 1/4" in the dash and 6.5" in the soundbar with an aftermarket Kenwood head unit. His thumps way more than mine does due to the higher powered head unit. Let me know if you have any questions or need wiring help. If the sub was not installed originally you will have to build a wiring harness likely. My jeep and uponones jeeps are older and did not have the option for a sub when they were built but we both got our hands on the newer consoles and got them wired up and working.

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Old 08-14-2013, 09:00 AM   #242
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His stock deck is almost completely non functional. The CD player does not work and the volume / power control arm is broken internally. The only way to try to adjust the volume is to use pliers on pull on the volume arm to turn it. It doesn't really work well as turning it clockwise will increase and decrease the volume. We got it set to a nominal level and use the 3 band EQ to adjust the volume up and down at this point

Until I take the console apart, I wont really know if he has a sub / amp in it or not. That was why I asked about the stock amp being proprietary to the stock deck.

If the stock amp is getting its input from the rear speaker wires, then that would not work well when I replace the deck that has (what I believe) will be an amplified output to the speakers (unless it is designed that way). You could probably add some info on that part with the experience you have with the system.

As I am typing this, I am wondering about what you said that the stock amp is getting its inputs from the rear speakers in the stock config. Using the rear speaker outputs from the new deck to the existing amp ( if it is there and if it is possible) may have an effect on the impedance on those channels in combination with the new sound bar speakers I plan to install. Amps typically use low level inputs. If this amp can use amplified inputs to drive, I dont expect it to affect the impedance of the rear speakers. But if it does and depending what type of impedance in would introduce could cause an issue with the new deck outputs. Paralleled resistance with the new speakers would change the 2 rear channel impedance. If the 4 ohm impedance is changed to a higher value, the new deck would not drive as much power to the sound bar speakers. If it is lower value, the 2 rear channels of the new deck would be driving harder and possibly cause heat / failure problems. I cant say for sure that this would happen. Most of the new decks only specify the output wattage and do not specify the expected impedance levels. In the past they have been 4/8 ohm.

Sorry for the long thought process. I'm just trying to think about all the variables that will / may come into play when we upgrade...

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Old 08-14-2013, 09:33 AM   #243
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Well I'm not as audio savvy as others so hopefully they will chime in. I can only tell you that from personal experience, and doing that other Jeep for uponone, and what many others here have done, you will have no issues with the setup that I described. I do understand enough to know that not having the proper ohm rated speaker for an amplifier can cause it to heat up and eventually fail. As far as what impedance the factory radio and other aftermarket head units put out I do not know. Again I have personally installed two of these "stock" subwoofer setups with the kicker and had no problems thus far. I have been runing my sub for nearly a month already with no issues.
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Old 08-14-2013, 11:01 AM   #244
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Thanks again for the feedback! I am looking more into it and talking to some old audio junkies here at work. They are very divided on using an amplified output from the deck to the original amp. The only other variable is that the THD would be amplified by the stock amp. That shouldn't be a major issue having the frequency cut off for the correct range of a sub.
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Old 04-09-2014, 10:51 AM   #245
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Thanks to all who contributed to this thread. I went with the Bazooka sub and it's like night and day.

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