1940s Oahu amp

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xtian
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1940s Oahu amp

Post by xtian »

Slowly powered up with variac...WORKS! Eighty-year-old caps, and no problem!

Added 3-conductor power cord, and had to jump out the Volume pot because it's frozen (no loss, because amp is not very loud).

Tubes are 6N7, 6C5, 6V6, 5Y3.

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I build and repair tube amps. http://amps.monkeymatic.com
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statorvane
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Re: 1940s Oahu amp

Post by statorvane »

Very cool! They don't make them like they used to, eh?
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Colossal
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Re: 1940s Oahu amp

Post by Colossal »

Amazing! Is that one of yours now or is it just passing through?
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didit
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Re: 1940s Oahu amp

Post by didit »

Cool. Liking that pre-Rola Rola field-coil.

Best .. Ian
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martin manning
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Re: 1940s Oahu amp

Post by martin manning »

Nice! A blast from the Hawaiian guitar past! Deoxit applied to the bushing and some gentle persuasion might free the volume pot. Working, but I'd bet replacing the electrolytics would really wake it up.
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xtian
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Re: 1940s Oahu amp

Post by xtian »

Colossal wrote: Mon Apr 20, 2020 8:58 am Amazing! Is that one of yours now or is it just passing through?
Here today, gone tomorrow.
I build and repair tube amps. http://amps.monkeymatic.com
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Colossal
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Re: 1940s Oahu amp

Post by Colossal »

xtian wrote: Mon Apr 20, 2020 3:31 pm
Colossal wrote: Mon Apr 20, 2020 8:58 am Amazing! Is that one of yours now or is it just passing through?
Here today, gone tomorrow.
That's a bummer. I've serviced a couple of original EH150s. Very cool amps as well. I dig the cabinet design of that Oahu though.
hitchcaster
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Re: 1940s Oahu amp

Post by hitchcaster »

martin manning wrote: Mon Apr 20, 2020 12:59 pm Nice! A blast from the Hawaiian guitar past! Deoxit applied to the bushing and some gentle persuasion might free the volume pot. Working, but I'd bet replacing the electrolytics would really wake it up.
some guys like steve kimock like those old shitty electolytics.. personally i like fresh ones but not current production. yeah, get that old pot working..
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