New Small DIY Gigawork Dac? - Page 24

hxt1 · 6th February 2012, 04:54 AM

Ok, I am a complete newb, I'm ok with a soldering iron, have built some stuff (hagtech bugle, bottlehead Eros, etc)
I'm making nothing but mistakes when it comes to this lampization stuff..
I have a SB3 and I just got a gigawork 'new' DAC, and I have salvaged the tube output stage from my Modwright plat. truth 999es, along with the PS9.0 power supply.
What I'd love to do is: find out where to 'tap' the dac outputs before the opamps, and:
make any mods necessary to use the MW tubestage for the gigawork's output.
I tried to do this with the SB3, and long story short.. it didn't work..
the tubes got hot, the 'music' sounded like hammered dogcrap... thin, static-ridden, but the 60hz buzz was clear, dynamic, and well defined!
any help would be greatly appreciated!
chers

hxt1 · 7th February 2012, 02:13 AM

I'm really wondering where the 'pads' are on the new gigawork small dac for lampizing?
The old one was c27, c30... What about the 'new' one?
Anyone?

hxt1 · 8th February 2012, 07:17 AM

Ok, on my own here, I suppose.
I've gone ahead and pulled the opamps, there are pins on the underside labeled left -, left +
Right -, right +.
I'm guessing that's where I can tap the output from the chip itself,
To the tubestage, steal the 12.6vdc from the modwright tube rectified PS for the gigawork, and since Dan's tube stage is made to work with a V out dac, I think(?) a couple of resistors inline should make workie.
Driving blind.
I'll post pics or a eulogy.

zeonrider · 9th February 2012, 07:44 PM

I finished some Lampucera dacs:

Regards zeoN_Rider

zeonrider · 9th February 2012, 07:48 PM

And:

My cat Sofija

Regards zeoN_Rider

merlin2069er · 9th February 2012, 07:53 PM

Great, what does it look like on the inside?

zeonrider · 9th February 2012, 07:57 PM

And:

Regards zeoN_Rider

hxt1 · 9th February 2012, 07:59 PM

Dobar Dan! (my wife is from Belgrade)!
Nice casework, where did you find the cases?
I am looking for a proper chassis for the lampucera and tubestage.
That fits both.
What are the two switches for on your silver dac?
Cheers

zeonrider · 9th February 2012, 08:00 PM

And:

Regards zeoN_Rider

zeonrider · 9th February 2012, 08:13 PM

Quote:

Originally Posted by hxt1

Dobar Dan! (my wife is from Belgrade)!
What are the two switches for on your silver dac?
Cheers

Dobro veče!

My cat is from Belgrade too

Two switches, hmm one for power off/on and sec. for coax/opt.

Regards zeoN_Rider

9th February 2012, 07:53 PM	#236
merlin2069er diyAudio Member Join Date: Sep 2008 Location: Toronto	Great, what does it look like on the inside? __________________ F5 / B1 / dcb1 / Monica Dac / ezDac / Dynaco ST 35 / jFet BOZ / Lightspeed attenuator *** my amazon shop * books & dvds ***

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6th February 2012, 04:54 AM	#231
hxt1 diyAudio Member Join Date: Feb 2012	Ok, I am a complete newb, I'm ok with a soldering iron, have built some stuff (hagtech bugle, bottlehead Eros, etc) I'm making nothing but mistakes when it comes to this lampization stuff.. I have a SB3 and I just got a gigawork 'new' DAC, and I have salvaged the tube output stage from my Modwright plat. truth 999es, along with the PS9.0 power supply. What I'd love to do is: find out where to 'tap' the dac outputs before the opamps, and: make any mods necessary to use the MW tubestage for the gigawork's output. I tried to do this with the SB3, and long story short.. it didn't work.. the tubes got hot, the 'music' sounded like hammered dogcrap... thin, static-ridden, but the 60hz buzz was clear, dynamic, and well defined! any help would be greatly appreciated! chers

7th February 2012, 02:13 AM	#232
hxt1 diyAudio Member Join Date: Feb 2012	I'm really wondering where the 'pads' are on the new gigawork small dac for lampizing? The old one was c27, c30... What about the 'new' one? Anyone?

8th February 2012, 07:17 AM	#233
hxt1 diyAudio Member Join Date: Feb 2012	Ok, on my own here, I suppose. I've gone ahead and pulled the opamps, there are pins on the underside labeled left -, left + Right -, right +. I'm guessing that's where I can tap the output from the chip itself, To the tubestage, steal the 12.6vdc from the modwright tube rectified PS for the gigawork, and since Dan's tube stage is made to work with a V out dac, I think(?) a couple of resistors inline should make workie. Driving blind. I'll post pics or a eulogy.

9th February 2012, 07:44 PM	#234
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	I finished some Lampucera dacs: Regards zeoN_Rider

9th February 2012, 07:48 PM	#235
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	And: My cat Sofija Regards zeoN_Rider

9th February 2012, 07:57 PM	#237
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	And: Regards zeoN_Rider

9th February 2012, 07:59 PM	#238
hxt1 diyAudio Member Join Date: Feb 2012	Dobar Dan! (my wife is from Belgrade)! Nice casework, where did you find the cases? I am looking for a proper chassis for the lampucera and tubestage. That fits both. What are the two switches for on your silver dac? Cheers

9th February 2012, 08:00 PM	#239
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	And: Regards zeoN_Rider

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