While right in the middle of my 10w PP mono guitar amp project, my power transformer went. It was a chassis mount and the closest Hammond is a Classic 273DZ on 2.25x2.81" mounting holes.
At this point in time I'm willing to use anything that will get me 250-300vdc and a 6v heater just to get the amp running. I'm very limited on chassis room so one transformer is all I can fit. It has to power 2 6V6GTs and 4 12AX7s.
Anyone have something kicking around?
At this point in time I'm willing to use anything that will get me 250-300vdc and a 6v heater just to get the amp running. I'm very limited on chassis room so one transformer is all I can fit. It has to power 2 6V6GTs and 4 12AX7s.
Anyone have something kicking around?
I probably have a tranny that will give the voltages but I don't think its going to be a lay down chassis mount...I have several OS uprights that will probably work if you can fit them. Let me look, shoot me an email later today at millerjeff@ccmhonline.com.
Jeff
Jeff
I have a laydown transformer from a Magnavox AMP-185. 290-0-290, 2 - 6.3v @~2a and a 5v winding. If this interests you I can measure the mounting holes etc. The original amp was PP 6V6
That could work. Would get me somewhere close to 300vdc. Measure away.
I've got a 300-0-300 at 110ma, laydown with centers about 2 9/16" and 3 1/8". The whole thing is 4"x 3 3/8" x 3 1/2". Two 1.5A 6.3V windings and a 6.3V at .6A. Tons of primaries too, 100, 110, 120, 220, 240. From a Sony TC500A R2R. Others here have sold (and some still listed) for $40. I don't need that much.
Paul
Wild Burro Audio Labs - DIY Full Range Speakers
Paul
Wild Burro Audio Labs - DIY Full Range Speakers
Well I measured the bolts they are 3 11/16" x 3". The cut out for the transformer is 3 1/8" x 2 3/8". The transformer model is 300701-1 138008 when googling the model# it brings up a few threads that pertain the the Magnavox amp-185. Closer inspection shows that it only has one 6.3v secondary schematic shows two. I may have to wire this up this weekend and check everything out. It is missing one filament winding. It could be a variation of the transformer. The transformer weighs in at 6.1 pounds.
FWIW, it isn't difficult to stand a transformer up. I've used AL angle, maybe .75-1" and cut out the area for the endbells with a file and hacksaw. Now that I've got a dremel, it would be easy! You might need longer screws, but you also might not. I think I might have a similarly modded unit kicking around, but at 360-0-360, it isn't what you are looking for.
Paul
Wild Burro Audio Labs - DIY Full Range Speakers
Paul
Wild Burro Audio Labs - DIY Full Range Speakers
It's not that I can't stand it up. This amplifier is going into a Fender 8" practice combo amp that I gutted. I'm pretty tight on space.
nic6paul - That might be a little too big for this project but thanks.
pjanda1 - I think I can just barely squeeze that transformer into the chassis. How much shipped to 60002?
nic6paul - That might be a little too big for this project but thanks.
pjanda1 - I think I can just barely squeeze that transformer into the chassis. How much shipped to 60002?
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