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Old 19th September 2004, 04:41 AM   #1
bobhedberg is offline bobhedberg  United States
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Join Date: Sep 2004
Location: Daytona Beach FL
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I got here while looking for a schematic (which I found here).
The hurricanes are gone, so I need something else to keep me busy.

I like to do tube audio stuff, like rebuilding classic amps, and designing and building tube audio stuff.

I like my Dynaco st-70 (self built driver closely based on Ned's driver schematic), st-35, Eico HF81, Scott 299, and other classic stuff.
I've built several pre-amps, experimenting with common cathode output, and Jack Elliano's ultra-path (kick butt), and have build a couple of se amps.
I'm currently building a prototype for 300B circuits, starting with the common 6sn7 (and 6sl7)/6sn7/300B, in order to get a benchmark sound, then experiment with xformer coupling, 6bl7's, etc.
It's very time consuming, and I don't have a lot of time anyway.

Speakers are starting to grab at me, as well. I've already built a pair of Hammer 12's, folded Voight horns with Fostex 6 inch full range drivers, and have recently acquired a pair of Klipsch Cornwall speakers (alnico). They all rule in their own ways.
My next set will be a full length Voigt horn with 8 inch Fostex drivers.
Bob Hedberg
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Old 19th September 2004, 08:55 AM   #2
Netlist is offline Netlist  Belgium
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Join Date: Jan 2003
Hi Bob
What can we say….with that much enthusiasm, please keep us informed about your projects.
The tube guys will love it!!

Welcome to the forum

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Old 19th September 2004, 09:53 AM   #3
wazzup is offline wazzup  Netherlands
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Location: The Netherlands
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Welcome Bob!
"I`m not the messiah!"
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Old 19th September 2004, 12:20 PM   #4
rcavictim is offline rcavictim  Canada
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Join Date: Jun 2004
Location: Next to an open wormhole NW of Toronto
Welcome aboard Bob! I also dabble in making DIY tube amps and speakers for the learning experience mostly so far. My latest speakers are in my avatar.
"There are more worlds than the one you can hold in your hand." Albert Hosteen, Navajo spiritual elder and code-breaker, X-Files TV Series.
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