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Old 10-30-2012, 10:44 PM
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Help with 9 speaker Alpine System.

I just picked up a '13 Cherokee with the Laredo X package. It has the 9 speaker Alpine system with 8" sub. The bass sucks and so does the mids from the door speakers. I desperately want to change the 3.5" dash speaker as well as all 4 door speakers. Will I totally screw up the sound of the system if I do that? Will that stock alpine amp power better speakers sufficiently? I want to put in a 3.5" fosgate dash speaker and front 6 x 9 fosgates and back 6.5" fosgates. I am very new at car audio systems. To me, with little knowledge, better speakers should equal better sound but I am sure it's not that simple. If anyone could help me and enlighten me, that would be great. I don't want to waste the money and have it backfire on me by not getting a good upgrade in sound or worse make the sound worse. Thanks!
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Old 11-03-2012, 08:01 AM
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Re: Help with 9 speaker Alpine System.

Quote:
Originally Posted by Kstephens1978 View Post
I just picked up a '13 Cherokee with the Laredo X package. It has the 9 speaker Alpine system with 8" sub. The bass sucks and so does the mids from the door speakers. I desperately want to change the 3.5" dash speaker as well as all 4 door speakers. Will I totally screw up the sound of the system if I do that? Will that stock alpine amp power better speakers sufficiently? I want to put in a 3.5" fosgate dash speaker and front 6 x 9 fosgates and back 6.5" fosgates. I am very new at car audio systems. To me, with little knowledge, better speakers should equal better sound but I am sure it's not that simple. If anyone could help me and enlighten me, that would be great. I don't want to waste the money and have it backfire on me by not getting a good upgrade in sound or worse make the sound worse. Thanks!
Greetings,

Grads on JGC and welcome to the club of the great Alpine system.

The Alpine factory system is based upon an internal DSP and power settings of the amp. The amp power allocation is based upon the design of the Alpine speakers as specified by Chrysler. Also, the crossover points, time delays and surround sound is also predetermined within the amp.

To change the speakers is a good first step, but you have to be aware of power requirements of the aftermarket speakers. Some speakers are so power hungry that at low volume they sound bad. Whereas, that same speaker with good aftermarket amp will sound great. The key for you is to look at the specs of the speaker and look at the sensitivity rating, the higher the number, the better it will with the internal factory amp. For example, an 89db speaker would need more power to push it, compare to a 93db. Many of the high end audiophile speakers have a lower number because they need to powered by a quality amp to get that great sound.

Most of us recommend for bass replacement the JL Audio Sleathbox, this defiantly needs the recommend power of an aftermarket amp. If you go with the Sleathbox, I would recommend not to get 6x9 for the front and get a regular 6 1/2 component speaker. This will give you a much better midbass punch which is not present in the JGC. You can use the factory amp to hookup the speakers by simple substituting them for the factory and you do not have to use the passive crossover that come with component speakers.

With the dash speaker replacement, keep in mind it is a center channel speaker and you should looker for midrange type of speaker that does not have a lot of high end in it (ie:100 - 18,000 hz). The rear door is also part of the rear channel, so you do not need a heavy hitting and super high tweeter.

The bottom line in dealing with the Alpine 9 channel factory system, if you want to sound good, you got to spend some loot. Read some our posts here to get a better idea on system configurations. And remember, speakers you must find some way to listen to them before buying.

Best for now.
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Old 11-03-2012, 02:31 PM
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Re: Help with 9 speaker Alpine System.

Adding 6.5s over 6x9s will not improve your midbass at all. In fact, it will hurt it. 6x9s have MUCH more cone area than 6.5s, which allows them to create lower notes easier.

The question comes down to what you're looking for. The Alpine is actually a very good, balanced system. It sounds like you're looking for boom and hiss. In that case, you'd be happy swapping out the front speakers with some terrible tweeter ridden monstrosities, and putting a big subwoofer in the back.

For what you want, you'd likely be happy going down to a flea market and having them throw in a cheapo big sub and from front 6x9s with a lot of tweeters.

Better sound is all subjective. What you may consider to be good sound I might consider too bright, too boomy, etc. At the same time, something I'd consider good you may consider to be lacking in extremities. Thus there is no set way to upgrade, you just have to go and listen to a lot of stuff and go from there.

As he noted, the only way to really upgrade the stereo in the Jeep is to replace the amps and speakers and bring your big boy wallet.
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Old 11-03-2012, 08:25 PM
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Agreed I enjoy the Alpine system but want more clarity and bass, hence I am buying Focal components, Focals for the rear doors, Stealthbox, new amp, and LC7i. Im spending about 2g for everything. Should blow away the Alpine.

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Old 11-08-2012, 04:04 PM
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Re: Help with 9 speaker Alpine System.

Kstephens:

I thought the same thing when I got mine; I was disappointed with mine too.

I thought about replacing the speakers and yanking out the whole system.

I was like "I am not even hearing the sub woofer."

Every so often I would play with the equalizer, fader and balance adjustments.

I finally made some headway just recently:

The Gain for the subwoofer does not increase when you turn up the BASS on the EQ.

The more you turn up the bass the more you overpower the speakers with uneccessary low end frequencies

Start by trying these settings


lower the bass ajustment to -2 ( you can go as low as -4 if you like)

Then move your MIDRANGE setting up high enough to your liking

Then move the TREBLE setting up high enough to the point where they are not tinny and scratchy.


When I did this I finally got it to where it should be tolerable. when I cut out all that bass I realized that the system was brighter and more dynamic plus I got the sound staging that was programmed into the system.

When you are adjusting the sound also use a store bought studio recorded album so so you have the highest sound quality available to you.

One more thing you don't hear to full range until you volume is turned up to at least 18


Give these setting a shot and see if you can live with it a little longer.
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Old 02-19-2013, 08:52 AM
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Re: Help with 9 speaker Alpine System.

Quote:
Originally Posted by 1stJeepGC View Post
Greetings,

Grads on JGC and welcome to the club of the great Alpine system.

The Alpine factory system is based upon an internal DSP and power settings of the amp. The amp power allocation is based upon the design of the Alpine speakers as specified by Chrysler. Also, the crossover points, time delays and surround sound is also predetermined within the amp.

To change the speakers is a good first step, but you have to be aware of power requirements of the aftermarket speakers. Some speakers are so power hungry that at low volume they sound bad. Whereas, that same speaker with good aftermarket amp will sound great. The key for you is to look at the specs of the speaker and look at the sensitivity rating, the higher the number, the better it will with the internal factory amp. For example, an 89db speaker would need more power to push it, compare to a 93db. Many of the high end audiophile speakers have a lower number because they need to powered by a quality amp to get that great sound.

Most of us recommend for bass replacement the JL Audio Sleathbox, this defiantly needs the recommend power of an aftermarket amp. If you go with the Sleathbox, I would recommend not to get 6x9 for the front and get a regular 6 1/2 component speaker. This will give you a much better midbass punch which is not present in the JGC. You can use the factory amp to hookup the speakers by simple substituting them for the factory and you do not have to use the passive crossover that come with component speakers.

With the dash speaker replacement, keep in mind it is a center channel speaker and you should looker for midrange type of speaker that does not have a lot of high end in it (ie:100 - 18,000 hz). The rear door is also part of the rear channel, so you do not need a heavy hitting and super high tweeter.

The bottom line in dealing with the Alpine 9 channel factory system, if you want to sound good, you got to spend some loot. Read some our posts here to get a better idea on system configurations. And remember, speakers you must find some way to listen to them before buying.

Best for now.

Do you have any idea what the sensitivity of the factory alpine system is? I'd assume 88-89?
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Old 02-19-2013, 09:39 AM
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Re: Help with 9 speaker Alpine System.

Quote:
Originally Posted by Andoskyy View Post
Do you have any idea what the sensitivity of the factory alpine system is? I'd assume 88-89?
Greetings,

I have yet to take out any drivers to look for any markings. Based upon the size of the amp, I have to say it has to be 90 or more. Any less, usual requires more power for an increase in sound. This gets into a more technical discussion, simple put, audio works on levels in change of 3 db. Which is why there is always difference in the sensitivity to the amount of power required to push it at normal playing levels. In pro audio, that is why sound engineers for live concerts or clubs take this numbers in consideration during in their designs.


In my post that you referenced, as a stepping stone, when changing into aftermarket speakers, the more sensitivity, the easier the factory amp can drive it. Later on when add an amp, the full beauty of the speaker can be heard.

The key to the front stage is how the subwoofer and mid-bass/midrange drivers are setup for the types of music you enjoy. For example, I like my subwoofer to set at high point of any where from 75 hz (cycles) to 110 hz. This is based upon the mid-base/midrange driver I am using will give me that punch I am looking for. The Focal, Morel HiFi, DLS Audio and Helix make some of the best drivers and even the raw drivers that I referenced from parts-express.com and madisound.com

Best for now.
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