Arc Vt-60 Cloned :-)

ANADIGIT · 31st March 2009, 01:42 AM

I will receive PCB from my group buy of ARC VT-60 SE but I can't find where's a source of LM329 IC's ?

Schematic included 3*6DJ8, 4*6550 and I decide to use Hammond 1650P, too

ANADIGIT · 31st March 2009, 01:50 AM

Plate through hole double layer with SILVER PLATED and 2 times of FR4 and CRYO TREATED

DigitalJunkie · 31st March 2009, 02:29 AM

Quote:

Originally posted by ANADIGIT
I will receive PCB from my group buy of ARC VT-60 SE but I can't find where's a source of LM329 IC's ?

Schematic included 3*6DJ8, 4*6550 and I decide to use Hammond 1650P, too

Digikey has some:
http://search.digikey.com/scripts/Dk...ame=LM329DZ-ND

You might also get by with a couple of 6.9V Zeners.

ANADIGIT · 31st March 2009, 03:37 AM

Does 6.9V zener diode better than LM329 ?
How are noise and regulation ?

Does anyone know about brand name of filter capacitor (470uF and 100uF) ?

Thanks

analog_sa · 31st March 2009, 08:20 AM

Hi Anadigit

Thanks for publishing the circuit. Taking into account the high signal level circuits the regulator is powering, there should be no real degradation using a zener. The 470uF and the low voltage electrolytics are Nichicon, the 100uF probably Chemicon.

kraljmatjaz · 31st March 2009, 08:48 AM

May i ask you where did you get the VT-60 pcb's. Where is the group buy?

Regards,
Boris

SY · 31st March 2009, 10:27 AM

Is that circuit correct? There's one or two things that don't look right.

Cryotreating a circuit board (besides being useless) can reduce reliability. NOT a good idea.

ANADIGIT · 31st March 2009, 10:32 AM

Hi, SY
Why don't you think CRYO not good for audio ?
I seen there're many website used this method to improve their goods.

This circuit came out from service manual but I think there're many revision of them.

Thanks

SY · 31st March 2009, 10:36 AM

It is not a good process for circuit boards (will hasten delamination). I have serious reservations about reliability considerations for other components (especially tubes).

Was the circuit redrawn from the manual? If so, that could explain the errors.

ANADIGIT · 31st March 2009, 10:42 AM

Cryo used for make everything reliable such as COPPER when you treated your interconnect it will be smooth and easy to solder because its molecule will recontruction.

BTW this method can made your money lost but it can make me happy.

What's wrong in schematic ?

31st March 2009, 03:37 AM	#4
ANADIGIT diyAudio Member Join Date: Nov 2008	comparing ? Does 6.9V zener diode better than LM329 ? How are noise and regulation ? Does anyone know about brand name of filter capacitor (470uF and 100uF) ? Thanks

31st March 2009, 10:27 AM	#7
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Is that circuit correct? There's one or two things that don't look right. Cryotreating a circuit board (besides being useless) can reduce reliability. NOT a good idea. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

31st March 2009, 10:32 AM	#8
ANADIGIT diyAudio Member Join Date: Nov 2008	Cryo ? Hi, SY Why don't you think CRYO not good for audio ? I seen there're many website used this method to improve their goods. This circuit came out from service manual but I think there're many revision of them. Thanks

31st March 2009, 10:36 AM	#9
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	It is not a good process for circuit boards (will hasten delamination). I have serious reservations about reliability considerations for other components (especially tubes). Was the circuit redrawn from the manual? If so, that could explain the errors. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

31st March 2009, 10:42 AM	#10
ANADIGIT diyAudio Member Join Date: Nov 2008	Example Cryo used for make everything reliable such as COPPER when you treated your interconnect it will be smooth and easy to solder because its molecule will recontruction. BTW this method can made your money lost but it can make me happy. What's wrong in schematic ?

31st March 2009, 08:48 AM	#6
kraljmatjaz diyAudio Member Join Date: Dec 2004 Location: Gorizia	May i ask you where did you get the VT-60 pcb's. Where is the group buy? Regards, Boris

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