Long live the 74VHC logic !

rbroer · 28th February 2003, 06:55 AM

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

the improvements were not subtle

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

Elso Kwak · 28th February 2003, 11:53 AM

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

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).

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

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

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.

28th February 2003, 06:55 AM	#1
rbroer diyAudio Member Join Date: Mar 2002 Location: Netherlands	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 the improvements were not subtle 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 __________________ Rudolf Broertjes

28th February 2003, 11:53 AM	#2
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	VHC logic Hi Rudolf, You arewelcome.

28th February 2003, 03:21 PM	#5
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	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).

28th February 2003, 05:41 PM	#7
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	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.

1st March 2003, 03:15 AM	#8
jcarr diyAudio Member Join Date: Jul 2002 Location: Tokyo, Japan	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 __________________ http://www.lyraconnoisseur.com/, http://www.lyraaudio.com


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28th February 2003, 12:25 PM	#3
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	Have you tried F(AST) logic?

28th February 2003, 01:05 PM	#4
Tazzy diyAudio Member Join Date: Jul 2002 Location: Netherlands	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?

28th February 2003, 04:59 PM	#6
Tazzy diyAudio Member Join Date: Jul 2002 Location: Netherlands	The philips is the cd player (loopwerk) and the cambridge is the dac ;-)

1st March 2003, 07:04 AM	#9
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	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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