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I did some "horse tradin'" a few weeks back with a guy from Florida. I swapped for a beat up ST70 chassis for testing purposes. Anyhow, I opened the box to see this thing, along with a note stating in a mocking scrawl, "Be careful when tradin' with Florida boys!!". By the time I thought 'you gotta be kidding me', I discovered the real chassis was underneath, along with some other goodies. :) Here's a shout out to Mike from Florida!

Supposedly it was rescued from a gator poacher in the Everglades. For what its worth, I swear I will make this chassis sing again. Yellow_Light_Colorz_PDT_08

Hey Shannon,

That coupling cap on the upper right appears to be cracked, I'd replace it before powering it up! Yellow_Light_Colorz_PDT_04 Yellow_Light_Colorz_PDT_07 :o Yellow_Light_Colorz_PDT_16

I'd use a variac--whoops...no power cord--I guess you'll have to replace that first. Yellow_Light_Colorz_PDT_06

Whew! I hope my tetanus shot is current. I stripped that unit: took a powered wire wheel to it, naval jellied it and then wire wheeled it a second time. Man, what a mess. Anyhow, with all the new chassis options I'm thinking that these sub par ST70 chassis have hit a new low value-wise. Why not throw together a uber cheap 6V6 PP amp design using them? We'll see how far I get.

Some black wrinkle paint would hide most pits etc. I found some at either Advance auto or O'Reillys auto parts. That stuff is getting hard to find! :o

Terry, I think I'm going to use silver Hammertone paint. I have a couple cans laying around. I'll paint the TF110 outputs (Triode Electronic's PP Fender clone) and a junkbox PT black - whatever is handy.

How about antique copper finish similar to this?

I like that one. The silver micas are interesting! JAN, I wonder? Certainly gives one an ideas. Ultimately, I'm going to try and keep this one low dollar. May even reuse an original driver with stability mods.

Shannon

that is the stock 390pF feedback capacitor that is inversely mounted on the driver board.

I'm kinda sorry you cleaned it up. Every car show I go these days features the latest trend: rat rods! How about rat amps?

Don

Ahhh, just sandblast it and cover it up with some woodgrain contact paper Yellow_Light_Colorz_PDT_05 Yellow_Light_Colorz_PDT_07 Yellow_Light_Colorz_PDT_09

If anything, it is going to weigh a bit less than an original chassis, by the time all that rust is removed...

We have a salt fog chamber here at work. Send me the nice new trannies and after a week in the salt fog they will match that chassis.
We had a job to expose 8 very nice JBL 10" drivers in there once....all us Hifi guys were crying like babies when they came out. That and the time I had to crush 14 very expensive rifle scopes of different brands for Bushnell as part of an ad campaign.
Yellow_Light_Colorz_PDT_05

I wonder just how well that "Naval Jelly" (no, it's not made from belly buttons) would work on this one... Yellow_Light_Colorz_PDT_11

I've always wanted to do up an ST70 using 807s or the old style 6BG6GTs, I like the ST shaped tubes and plate caps. Or for less power and PP triodes, 2A3s, 6A3s, 6A5s or 6B4Gs.



/ed B in NH

EWBrown wrote:I wonder just how well that "Naval Jelly" (no, it's not made from belly buttons) would work on this one... Yellow_Light_Colorz_PDT_11

Not worth a darn, actually. It would have required 26 applications and then nothing would have been left. :) I did get out some JB Weld and used some as pit filler, then filled in the bias pot holes, rca connector and the mono switch. Trying something a little different.

I love JB weld! It has rescued me on many occasion! Yellow_Light_Colorz_PDT_09