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Old 10th February 2005, 05:12 AM   #471
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Default My Menno Bricks

PAT4006 Toroid Outputs, 4 x EL34 Triode Strapped with wimpy 12AU7 common cathode pre, direct coupled to concertina splitter.
12Hz to 150kHz at 10W - 40W max

Edit - I forgot pulled the 12AU7 and fitted ECC99 in its place.
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Old 10th February 2005, 05:15 AM   #472
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Default And again in company

845SET up the back next to AKSA 55N+ (SS - sorry).
EL84 Ultalinear (10W/chan), ECL86 Rogers Cadet III Clone and the Menno Bricks.
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Old 10th February 2005, 03:16 PM   #473
MelB is offline MelB  Canada
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Here's a bottom shot finally! Yes chassie is 12 gauge copper. A sheet
large enough to make two amps cost me $90CND. The guy at the sheet metal shop does the cutting and bending for free. "Anything but another duct!" Kinda messy under the hood, but a lot of tinkering went on. You see 2X4H chokes under there. Overkill, but I had em so......
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Old 10th February 2005, 08:24 PM   #474
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What's sense of copper cassis ? Past one month it will be dirty black and will be look like textbook of dactyloscopy . Standard question : Have you in your flat a children ?
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Old 10th February 2005, 09:53 PM   #475
Coulomb is offline Coulomb  England
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Quote:
Originally posted by Upupa Epops
What's sense of copper cassis ? Past one month it will be dirty black and will be look like textbook of dactyloscopy . Standard question : Have you in your flat a children ?
It is easy to stop copper from oxidising if you spray it with a clear Laquer.

Regards

Anthony
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Old 10th February 2005, 10:01 PM   #476
MelB is offline MelB  Canada
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That amp was built 4 years ago....sprayed it with clear laquer...havn't had to do more than dust it! (Occationally) Copper is really easy to work with. UMMMM...let's see....Hummmm...I thought it would look pretty cool at the time too.
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Old 10th February 2005, 10:04 PM   #477
MelB is offline MelB  Canada
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Ooops...no children...they are off to University/Work now....
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Old 11th February 2005, 02:14 AM   #478
rdf is offline rdf  Canada
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Quote:
Originally posted by MelB
Here's a bottom shot finally! Yes chassie is 12 gauge copper.
Hi Mel, do you use the copper chassis as part of the circuit? If so, how are electrical connections to it made?
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Old 11th February 2005, 12:41 PM   #479
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Hi,
I'm a new member of this forum....
first: sorry for my bad english!
Last week I completed the assembly of my Dynaco ST-70 clone

Click the image to open in full size.

the bottom

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Bye, Andrea
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Old 11th February 2005, 12:47 PM   #480
SY is offline SY  United States
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first: Sorry for my nonexistent Italian.

That's a nice star ground implementation. What's the topology of the input/driver stage? I can see that you have retained the feedback loop.
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