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Old 12-04-2011, 03:41 PM   #1
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Audio replacement HELP!

I am looking to improve the sound quality in my 2007 4dr JK Wrangler but I am not sure where to start. As of right now I am planning on getting 4 6.5 inch Kicker speakers (link below) to replace the stock. After perusing through the forum it seems pretty clear that wont do a hell of a lot unless I also get a new head unit (also below). At that point I thought I had it figured out and then I figured out that there is an amp in the mix somewhere that most likely also needs to be replaced. I thought that you only had to buy an amp if you were setting up subs, which I am planning on doing as my final step. So if anybody could explain to me how I should tackle this monster that would be great! Also do I need to purchase certain wires/harnesses or will the stock wires do for these speakers and head unit. Thanks.

Head Unit - JVC KW-HDR720 CD receiver at Crutchfield.com

Speakers - KICKER CAR AUDIO KS65 & DS650.2 TWO WAY 6 1/2" SPEAKER 2 PAIR PACKAGE SYSTEM | eBay

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Old 12-04-2011, 05:04 PM   #2
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OK for good sound, you need better speakers and a better amp. They head unit doesn't play that much in the mix, but it'll probably be easier rigging everything if you start with a new head unit.

NOW that being said, remember you are driving an acoustically challenged vehicle. You'll never win any car audio shows except for maybe a thumper contest if you load your rear with 6 15 inch subs.

Now that being said, depending on how crazy you want to get, you'll need to match up quality speakers with a quality amp, run some crossovers to isolate the signals going to your various speaker (ie you don't want mid and bass going to your tweeters, not you you want mids and highs going to your subs.

Now placement is the key and THAT is the main challenge of our rigs. Jeep did a nice job throwing tweeters on the dash, but the sound bar really isn't that great for great sound.

As far as amps and speakers, the head unit can only put out so much ppwer, which in most cases means the speakers are under powered, hence the small amp under the steering wheel.

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Old 12-11-2011, 05:21 PM   #3
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Awesome, I am going to order new amp head unit and speakers tonight. What type of amp should I get in order to run a 12 or 15 inch sub? Do I just have to make sure it can handle more or watts than the sub produces? Thanks for the information this is really helpful
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Old 12-11-2011, 05:24 PM   #4
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Originally Posted by warriorwrangler
Awesome, I am going to order new amp head unit and speakers tonight. What type of amp should I get in order to run a 12 or 15 inch sub? Do I just have to make sure it can handle more or watts than the sub produces? Thanks for the information this is really helpful
You need to go do some research on an audio site because your lost.
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Old 12-11-2011, 06:17 PM   #5
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Originally Posted by 2012-Rubicon

You need to go do some research on an audio site because your lost.
I agree.

More is not always better when it comes to subs/amp.
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Old 12-12-2011, 11:53 AM   #6
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I dont know how much bump your looking for. But I replaced the 4 speakers with the 6.5 with 3 way kenwoods that put out 70 max rms power. Hooked up a 4 channel 760 watt amp putting out 75 rms max per channel kept the factory head unit for that so called sleeper look. Put a powered sound ordnance 8 inch sub under the drivers seat. Sounds really really loud and clear with good bump... not going to rattle your teeth out. So the sub is pretty much hiden and the amp is hidden under the passenger seat, factory head unit. With the jeep being striped down in the summer I did not want to draw any attention to the sound system to be stolen. It cost about 600 bucks for everything plus I had it installed because the PAC interface was a pain in the ass to hook up. Good Luck!
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Old 12-12-2011, 12:00 PM   #7
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Speakers DO NOT put out any power!
Speakers turn an analog audio signal from an amplifier into a movement of air (sound) through and electromechanical device (speaker) once you grasp these simple theorys you can then try to post information to help people with purchasing audio equipment.

Why is it so hard for people to do simple research and understand things before they try to help others?
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Old 12-12-2011, 12:08 PM   #8
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Originally Posted by bjc24v
Hooked up a 4 channel 760 watt amp putting out 75 rms max per channel
Sounds like a 300 watt amp to me. Probably more like 200 since your probably using the 2ohm numbers not the 4 ohm specs. Also what brand is it?
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Old 12-12-2011, 12:16 PM   #9
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Originally Posted by 2012-Rubicon View Post
Speakers DO NOT put out any power!
Speakers turn an analog audio signal from an amplifier into a movement of air (sound) through and electromechanical device (speaker) once you grasp these simple theorys you can then try to post information to help people with purchasing audio equipment.

Why is it so hard for people to do simple research and understand things before they try to help others?
Well said...
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Old 12-12-2011, 01:20 PM   #10
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Well said...
Thanks.....though I did make a spelling error or two I'm fairly certain my point was made
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Old 12-12-2011, 02:11 PM   #11
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You should have thrown "transducer" in there
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Old 12-12-2011, 03:01 PM   #12
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Originally Posted by Ibuildembig
You should have thrown "transducer" in there
Capacitor, inductive coil, semiconductor, diode, ic, potentiometer, square wave, root mean square peak, impedance metal oxide semiconductor field effect transistor, DAC and a whole lot of other goodies and terms most people would never understand. CAN, LAN....I could go on and on lol.
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Old 12-12-2011, 03:04 PM   #13
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and diac, triac, opamp, nan gate, nor gate....lol
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Old 12-12-2011, 03:10 PM   #14
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and diac, triac, opamp, nan gate, nor gate....lol
Wow, someone who speaks my language!
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Old 12-12-2011, 03:11 PM   #15
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Likewise
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Old 12-12-2011, 03:31 PM   #16
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Originally Posted by 2012-Rubicon View Post
Speakers DO NOT put out any power!
Speakers turn an analog audio signal from an amplifier into a movement of air (sound) through and electromechanical device (speaker) once you grasp these simple theorys you can then try to post information to help people with purchasing audio equipment.

Why is it so hard for people to do simple research and understand things before they try to help others?
sorry for mistyping. They handle up to 70 rms not put out.
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Old 12-12-2011, 03:34 PM   #17
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Sounds like a 300 watt amp to me. Probably more like 200 since your probably using the 2ohm numbers not the 4 ohm specs. Also what brand is it?
This is the amp info.. Jensen

Power Series 4-Channel Class AB Car Amplifier
RMS Power Rating:
4 ohms: 75 watts x 4 chan.
2 ohms: 100 watts x 4 chan.
Bridged, 4 ohms: 190 watts x 2 chan.
Max power output: 380 watts x 2 chan.
MOSFET power supply
Design Minimizes Distortion and Reduces Idle Current
High Current Bi-Polar Output Transistors
LED power, standby, and fault indicators
Pass-Thru RCAs
4/3/2 operation
Preamp RCA outputs
Short Circuit, DC-offset and Thermal Overload Protection Circuitry
Variable high-pass filter (40-300 Hz)
Variable low-pass filter (40-300 Hz)
CEA-2006 compliant amplifier
Frequency response: 5-60000 Hz
8-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
Dimensions: 12-1/2"L x 9"W x 2-1/2"H
Authorized Internet Dealer
1-year Manufacturer's warranty
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Old 12-12-2011, 04:03 PM   #18
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Quote:
Originally Posted by bjc24v

This is the amp info.. Jensen
I'm sorry
Quote:
Originally Posted by bjc24v
Power Series 4-Channel Class AB Car Amplifier
RMS Power Rating:
4 ohms: 75 watts x 4 chan.
so this is a 300 watt amplifier

Quote:
Originally Posted by bjc24v
CEA-2006 compliant amplifier
Doubtful
Quote:
Originally Posted by bjc24v
Frequency response: 5-60000 Hz
Wow awesome.....Especially if your a dog lol. Over 30k is just a numbers game.

You should also note they didn't include THD numbers for the amp. As I'm sure they are atrocious.

I am not usually one to bash stuff other people buy, but in the case of the audio world I am a bit of a snob and rightfully so. But I guess if your buying stuff so that when it gets soaked in a jeep you can throw it out, then I guess that's a good choice.
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Old 12-12-2011, 04:07 PM   #19
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I dont know a whole lot about sound systems, just know that it sounds really good. Was just trying to explain what I have in my jeep. Did not mean to misinform anybody.
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Old 12-12-2011, 04:09 PM   #20
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I dont know a whole lot about sound systems, just know that it sounds really good. Was just trying to explain what I have in my jeep. Did not mean to misinform anybody.
I understand what your saying. It's just that what you have probably does sound better than bone stock but being a betting man.......its probably not much or any better than the infinity system would be......
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Old 12-12-2011, 04:39 PM   #21
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Ya I agree and I am kicking myself for not getting the infinity system and being done with it. Lesson learned the hard way.
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Old 12-12-2011, 04:45 PM   #22
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Ya I agree and I am kicking myself for not getting the infinity system and being done with it. Lesson learned the hard way.
Lol.....sometimes that's the best lesson..I have learned a lot of them that way!

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