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anyone familiar with Sonys CDX-C90/4000

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=41504
Printed Date: July 21, 2025 at 7:54 PM


Topic: anyone familiar with Sonys CDX-C90/4000

Posted By: Tekno
Subject: anyone familiar with Sonys CDX-C90/4000
Date Posted: October 23, 2004 at 5:16 PM

Using the processor will eliminate the need to use the amplifiers crossover sections correct. By eliminating the crossover sections, how much audible difference will there be in amplifers? Say a JL 300/2 on focal polykevlar comps   vs   a diamond d7 7152 on the same component set?



Replies:

Posted By: kfr01
Date Posted: October 23, 2004 at 5:49 PM

The crossover section is only a small part of an amplifier's sound.  Two amps will always sound slightly different.  I haven't heard either in a controlled environment (same speakers, etc).  I think the D7 series by Diamond is probably in a class above the JL. 



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New Project: 2003 Pathfinder




Posted By: Tekno
Date Posted: October 23, 2004 at 8:05 PM
kfr01] wrote:

p>The crossover section is only a small part of an amplifier's sound.  Two amps will always sound slightly different.  I haven't heard either in a controlled environment (same speakers, etc).  I think the D7 series by Diamond is probably in a class above the JL. 


How do you like your xtants? I have heard good things about those also.

I did a install that consisted of a old esoteric 7152 (now diamond d7's) and it sounded awsome on a set of JL comps xr comps. He had a OK source unit (sony xplod junk) vs my C90..... I had the JL 300/2 on a set of polyk focals in my own car  (with the TN51 tweeters) and it didn't sound like anything special. He had a van halen live CD that sounded like a damn concert in his vehicle, put the same cd in my car and it didn't sound as musical.





Posted By: Tekno
Date Posted: October 23, 2004 at 8:15 PM
kfr01] wrote:

p>The crossover section is only a small part of an amplifier's sound.  Two amps will always sound slightly different.  I haven't heard either in a controlled environment (same speakers, etc).  I think the D7 series by Diamond is probably in a class above the JL. 

I have had experience with both... I installed a esoteric 7152 (150x2 at 4ohms) on a set of JL 6.5 comp xr's with a sh*tty xplod deck in a friends vehicle and it sounded like a damn concert hall in his truck. I had a 300/2 jl (150x2 at 1.5-4ohm) on a set of focal polykevs with utopia tn51 tweets and my ultra clean C90 deck and it didn't sound as musical. Maybe I am crazy but i think the esoteric on the JL's sounded better than my setup.





Posted By: Tekno
Date Posted: October 23, 2004 at 8:22 PM
Tekno] wrote:

QUOTE=kfr01]

The crossover section is only a small part of an amplifier's sound.  Two amps will always sound slightly different.  I haven't heard either in a controlled environment (same speakers, etc).  I think the D7 series by Diamond is probably in a class above the JL. 


I have had experience with both... I installed a esoteric 7152 (150x2 at 4ohms) on a set of JL 6.5 comp xr's with a sh*tty xplod deck in a friends vehicle and it sounded like a damn concert hall in his truck. I had a 300/2 jl (150x2 at 1.5-4ohm) on a set of focal polykevs with utopia tn51 tweets and my ultra clean C90 deck and it didn't sound as musical. Maybe I am crazy but i think the esoteric on the JL's sounded better than my setup.

[/QUOTE]

hah, i wrote that post out twice thinking the first didn't post.





Posted By: Steven Kephart
Date Posted: October 24, 2004 at 2:12 AM

The 4000X processor is an absolutely killer processor.  The only issue most people have with it is the crossover frequencies available.  They are very limited.  Check out https://www.matronics.com/xdp4000x-list to download Sony's DSC software used to control the 4000X to see all it's funcionality.

As for the amplifiers, I don't have any experience with either.  Good luck though!

Steven Kephart

Adire Audio



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