Dave's G's well spoken info.

[larryderouin]

The Fisher Phase Inverter Noose Revisited Part II (for 400 and 500/800B receivers) this and the previous post (#20) detail modifications to the Phase Inverter sections that take care of the P.I. "noose" that FISHER installed for various reasons, gets rid of it, and modifys the circuit to allow you to use ANY 12ax7 tube (including Russian tubes) without problems. https://audiokarma.org/forums/index...art-ii-for-400-and-500-800b-receivers.860275/

 

[Tinkerbelle]

https://audiokarma.org/forums/index...ide-band-am-fm-multiplex-tuner-preamp.780251/
The Statesman (202-T) Wide-Band AM-FM Multiplex Tuner Preamp.

 

[Tinkerbelle]

Fairchild 275
https://www.audiokarma.org/forums/index.php?threads/rare-beauty-fairchilds-275-amplifier.909896/

ARC D115 mystery
Parts and Pieces: A True ARC Mystery

Improving Fisher's Heater String Cathode Bias System

The End of an Era: The Fisher 55a
https://audiokarma.org/forums/index.php?threads/the-end-of-an-era-the-fisher-55-a.646003/

Taming the HH Scott 208
https://audiokarma.org/forums/index.php?threads/taming-the-hh-scott-208.792617/

Bullet Proofing The EFB Cathode Bias Regulator
https://audiokarma.org/forums/index...oofing-the-efb-cathode-bias-regulator.954192/

Fisher X-1000 integrated - Welcome
Note: this is initially an Audiodon (RIP) thread. Dave starts the restoration around post #36 of Don's thread
https://audiokarma.org/forums/index.php?threads/fisher-x-1000-integrated-welcome.306741/page-2
See also the later EFB mod for the X-1000; link at post#3 of this "Dave's G's well spoken info" thread

A Reference 400 Restoration/Modification:
https://audiokarma.org/forums/index.php?threads/a-reference-400-restoration-modification.870612/

Taming The Acrosound Model 20-20:
https://audiokarma.org/forums/index.php?threads/taming-the-acrosound-model-20-20.727012/

500C/800C: 6HR6 Versus 6AH6:
https://audiokarma.org/forums/index.php?threads/500c-800c-6hr6-versus-6ah6.975484/

Hidden Treasure: Bringing Out The Very Best of Dynaco's SCA-35:
https://audiokarma.org/forums/index...g-out-the-very-best-of-dynacos-sca-35.999693/

 

[bobabode]

A well deserved honor. The 2020 Audiokarma Member of the Year | Audiokarma Home Audio Stereo Discussion Forums

 

[analogadict]

Modifications to the Akai M8 SE monoblocks to make them most suitable for HiFi playback. It is not Dave's own thread, scroll down to his post.
https://audiokarma.org/forums/index.php?threads/akai-m8-circuit-cut-down.460792/

Regards,

 

[Pete B]

@dcgillespie
Has Dave done an analysis of the Marantz 8B? I've noticed the "interesting" feedback circuit,
and have been wondering about it for a long time. Never owned one, only heard it once or twice.

 

[nj pheonix]

I'd be more than a little surprised if one didn't cross his bench over the years. I can't say I remember an article though.

 

[hammr7]

Correct me if I am repeating anyone else's link:

Modifying the Eico HF-60 to use 6550s

http://tronola.com/html/hf-60_with_6550s.html

And a little discussion by Dave of his philosophy while discussing another A/Ker's rebuild using his tweaks. A great overall article (one of dozens if not hundreds), but if in a hurry go to post #35.

https://www.audiokarma.org/forums/index.php?threads/gillespie-triode-williamson-build.795322/

 

[Pete B]

@dcgillespie
Has Dave done an analysis of the Marantz 8B? I've noticed the "interesting" feedback circuit,
and have been wondering about it for a long time. Never owned one, only heard it once or twice.

Dave G. comments here on the 8B, a few posts down:
https://audiokarma.org/forums/index.php?threads/marantz-8b-design-questions.614536/

I thought that there was another thread with comments from him but can't find it at the moment.

 

[hjames]

By request -
Please keep this thread on topic - Dave G's contributions. Its not about parts hoarding or the like.

 

[gadget73]

Hidden Treasure: Bringing Out The Very Best of Dynaco's SCA-35

Bullet Proofing The EFB Cathode Bias Regulator

 

[Tinkerbelle]

Untapped Potential: Heath's W-5M

 

[nerdorama]

I don’t think this one is in the list. I’m doing a pair of W4’s based on this thread.

Gillespie triode Williamson build

Back in April, I happened to be picking up some parts at my local electronics hut / surplus store, and I stumbled across a very nice condition Heathkit W4-AM monoblock amplifier at a very good price. I had never messed around with a 5881 amplifier or a Williamson circuit amplifier, so I decided...

audiokarma.org