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-   -   Long live the 74VHC logic ! (http://www.diyaudio.com/forums/digital-source/11764-long-live-74vhc-logic.html)

rbroer 28th February 2003 06:55 AM

Long live the 74VHC logic !
 
I was using a 74HC74 for my synchronous reclocker (non oversampled TDA1543 with passive I/V).
It is powered by a NPN emitter follower "regulator", with current sourcing three LEDs (bypassed) for the reference.
Yesterday I exchanged it for a VHC version, as some have suggested to "sound" good.
To my very big suprise :confused: the improvements were not subtle :att'n:
Biggest change is the "coldness" has gone, sounds "warmer".
Basses are slightly better and there is a little more "air".

Thanks to Elso Kwak for this nice tweak :cool:

Elso Kwak 28th February 2003 11:53 AM

VHC logic
 
Hi Rudolf,
You arewelcome.
:)

tiroth 28th February 2003 12:25 PM

Have you tried F(AST) logic?

Tazzy 28th February 2003 01:05 PM

Elso, I've got a philips CD624 and a Cambridge DacMagic2.
For which device would it make sense to change the clock or should I reclock both?

Elso Kwak 28th February 2003 03:21 PM

Reclocking
 
Hi Tazzy,
Ooops, with both players I am not familiar.
In my limited experience I have found that every type of CDP reacts differently to my clock.
The Philips CD-380 and CD-650 get more bright.
My old Sony CDPX33ES changed fom unlistable to barable. and in the cheap Sony CDPM27 the difference was not too great.
I suggest to built one clock and try it in both players. If lucky you have only to change the crystal or not even that (if the frequency is the same).:cool:

Tazzy 28th February 2003 04:59 PM

The philips is the cd player (loopwerk) and the cambridge is the dac ;-)

Elso Kwak 28th February 2003 05:41 PM

KWAK-CLOCK
 
Hi Tazzy, Sorry I was confused.
The KWAK-CLOCK is for installation in the transport and the Asynchronous Reclocker can be installed in your DAC, just before the DAC chip.

jcarr 1st March 2003 03:15 AM

Elso:

Have you ever installed your KWAK-CLOCK and/or Asynchronous Reclocker into a Marantz DR-17 combination CD player / CD-R burner?

If not, do you know of anyone else who has?

Any other effective modifications for a DR-17 would also be appreciated.

regards, jonathan carr

Elso Kwak 1st March 2003 07:04 AM

DR-17 Mods
 
Hi Jonathan,
I did a search in my received emails but no reference to the DR-17. Me myself have never seen this model.
Sorry not being able to help you better.
;)


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