A new Tweed Deluxe build.

Modern Saint said:
That is very cool, never seen it done before.
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I really wish I had taken a picture of it before for comparison. I didn't really think it would turn out so well.

It was a 3/4" tear that was kind of transverse to the cone, running from the inside point of the surround to the first rib or so.
 
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Since I'm waiting on parts, I made up a mock-up of the tube chart. I'm not actually in LA anymore, but that's where the part collecting started, the old amp was sold, and my son was born..and it sounds more exciting than some suburb in Virginia.

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Yeah!!!!!!!



I'm short on 12AY7 and one 2A Slo-Blo fuse, but I used a 12AX7 and a 1A Slo-Blo to check it out. Everything running perfectly.

122VAC wall voltage

~6.6VAC heater voltages
5.1VAC rectifier heater voltages

I have the 330-0-330 and 355-0-355 taps on the PT, so I wired them in with a DPDT switch (in place of a Ground or Standby switch).

This gives be selectable B+ voltages of 331VDC (loaded) and 376VDC (loaded).

6V6GT bias in at 12W or 13W dissipation.

The repaired speaker is doing well too.

Pics this weekend.
 
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BoomBoomBigelow said:
I hope that DPDT switch is well insulated!
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Well, switch lugs aren't shaped real well to accept shrink tubing, but each lug is heat shrink individually. Which I considered overkill when I did it, and it just makes the switch take up more space than it should, so it may not stay that way. Shrinking the footprint and using lack of proximity to isolate it may be a more ideal solution.

It's not like it is insulated at the tube socket, not is it one most hand-wired amps. It is low current (120mA) and surrounded by one big grounded steel chassis.

But, ultimately I think I'll end tying off one of the other. The difference between the voltages is nearly indistinguishable. I originally wired it for switching because I thought I may want to compare "compensated" vintage-spec voltages versus the increased voltages my original 1960 amp ran at due to increased wall voltage. So far? Meh.
 
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BoomBoomBigelow said:
You might want to try one of these Vintage Voltage adaptors:

http://www.geofex.com/article_folders/vintvolt/vintvolt.htm

I built one in a 4x4 electrical box. It's safer and portable.
As for the sound-- i dunno, but I think it's cool for vintage tubes and vintage circuits.
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PT is already compensated, with 120VAC primary/330VAC secondaries (a real deal Tweed Deluxe would run around 385-0-385 on 120V wall voltage). My numbers line up perfectly on the 330V taps...textbook everywhere in the amp.

I just wired in the 355 taps as well in case I wanted to push it a little like my original was. But, like I said, I found the ~25-30VDC difference in B+ was insignificant for tone or feel. Even then the voltages weren't out of line, still biasing within reason.
 
After 2+ months of the amp sitting around, cabinet finally ordered today. But some of that money from the sold gear to use. Of course, 6 hours later, I found out Dog Holliday might have cancer so I wish I had saved the $285, but ... we'll see.

Updates when I get the cab.
 
What else would a man named Wyatt call his pooch? Lymph nodes have been growing for a while, but only the ones under the neck, so the vet says it can be a number of things and Holliday doesn't have many of the cancer symptoms, but cancer is a definite possibility.

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Modern Saint said:
Wish that I could have met the Coop. Sadie and Lily are great pooches.
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Cooper was a shithead, but he was a loveable shithead.

You know how Lily and Sadie hid all weekend?

Not Cooper. He was always right there in your face trying to get at what you were eating.

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