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Interested in Modifying the C4000

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jvandyke_texas

TFM-6cb

Posts: 256

Joined: Sat Jun 11, 2005 12:25 am

Location: Texas

Post Mon Jun 13, 2005 11:07 pm

Interested in Modifying the C4000

Are there other electrical engineers out there who are interested in modifying their C4000 for top performance?

I recently bought an ebay C4000, and the correlator and peak unlimiter didn't sound like my Phase Linear 4000 that I've used for 25 years. I've been going through the C4000, and C4000t schematics and looking at signals under the scope.

So far I've found the clipping in the summing amp and log amp that's causing the correlator to swish on noisy programs. Found a PCB layout error in the correlator right channel that limits its performance.

There's also redesign potential in the correlator, peak unlimiter, time delay, and maybe sonic hologram generator.
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TNRabbit

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(pair of) SILVER-7 TUBE AMPs

Posts: 13375

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Wed Mar 02, 2011 3:42 pm

Re: Interested in Modifying the C4000

I'm making it my personal mission to revive all 20 pages of unanswered threads~ :-"
TNRabbit
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From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
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jvandyke_texas

TFM-6cb

Posts: 256

Joined: Sat Jun 11, 2005 12:25 am

Location: Texas

Post Wed Mar 02, 2011 8:11 pm

Re: Interested in Modifying the C4000

Gee, 2005.
I already redesigned that preamp (and BillD's) completely.
Carver listened to it and wanted me to do his.
Too busy.
Project over.
Phase Linear 4000 Series I,II, 700B Series I,II, Carver C-4000 champagne, black, C-4000t, TX-11a, AR-XB, Pioneer PL-512, Speakerlab K
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BillD

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(pair of) SILVER-7 TUBE AMPs

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Joined: Wed Jun 06, 2007 8:29 pm

Location: The west's most mid-western town, Scottsdale, Arizona

Post Wed Mar 02, 2011 8:15 pm

Re: Interested in Modifying the C4000

Nice to see you're still lurking.
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
_________________
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer
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Scarabeo

User avatar

SILVER-7 TUBE AMP

Posts: 2658

Joined: Tue Nov 18, 2008 6:05 pm

Post Wed Mar 02, 2011 8:32 pm

Re: Interested in Modifying the C4000

jvandyke_texas wrote:Gee, 2005.
I already redesigned that preamp (and BillD's) completely.
Carver listened to it and wanted me to do his.
Too busy.
Project over.

Yep, Good to see your still out there! =D>
BillD, You will be forever with us! RIP until we meet again on the other side...
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treitz3

User avatar

"Julian"
"Julian"

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Joined: Mon Oct 16, 2006 5:39 pm

Location: The tube lair in Charlotte, NC

Post Wed Mar 02, 2011 10:13 pm

Re: Interested in Modifying the C4000

No doubt. We haven't heard a peep in a while from you. Hope all is well.

Don't mind the Rabbit. He's obviously bored and can't remember that Bob and the folks at CF had actually listened to your upgraded, modified C-4000. Either that or he's getting all senile on us. :-s
In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

The best way to enjoy digital music reproduction is to never listen to a good analogue reproduction.

Robert R. - "Did you see my North Korea analogy? I should have named it Carversite.kim"
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TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13375

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Thu Mar 03, 2011 5:05 am

Re: Interested in Modifying the C4000

treitz3 wrote:No doubt. We haven't heard a peep in a while from you. Hope all is well.

Don't mind the Rabbit. He's obviously bored and can't remember that Bob and the folks at CF had actually listened to your upgraded, modified C-4000. Either that or he's getting all senile on us. :-s


...or tweaking everyone's collective nose...having fun!
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
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engtaz

User avatar

"TAZ"

Posts: 5253

Joined: Sat Jun 30, 2007 1:43 pm

Location: Tampa, FL

Post Thu Mar 03, 2011 4:27 pm

Re: Interested in Modifying the C4000

Great to hear from you James. Hope all is well with you.

Cabin 9
Roy
engtaz


Carver M4.0T in front channels to Caver AL VI's in SACD & 2 Channel setup
C 16, PT 2400, Slim Device, Carver TX-8, 490T and Rega TT w Grado Gold cart in the 2 channel setup
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