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Old 7th December 2008, 05:30 PM   #11
poynton is offline poynton  United Kingdom
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It's not a Quad 1 - different layout and tubes.

The transformers remind me of the old RCA amp.

From the resistors, I would say late '40s or early '50s.

If it ain't broke, break it !! Then fix it again. It's called DIY !
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Old 7th December 2008, 05:35 PM   #12
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Looks like it could be an old cinema Monitor amp, from the chassis colour, prob. Gaumont-Kalee
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Old 9th December 2008, 04:24 PM   #13
poynton is offline poynton  United Kingdom
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Someone must know what this is.

I know I've seen it somewhere before - probably at an audiojumble.

If it ain't broke, break it !! Then fix it again. It's called DIY !
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Old 10th December 2008, 03:03 AM   #14
anatech is offline anatech  Canada
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Hi Andy,
Can you show up pictures from the top and front? That might trigger someone's memory, even if it's marked up.

Things you know:

The approximate age
The tube compliment
Possibly the make of the transformers.
The rough circuit configuration and power output.

From that, you might be able to track down the OEM, or brand. Most manufacturers find a way to do things and don't stray from that too often. There is also a post on the rear panel to select some mode of operation or output impedance. That looks a lot like what I have seen on the small Leak stereo amp I have that uses 6BQ5s. Okay, they are EL84s.

Anyway, you may find it by cruising through schematics of that era.

"Just because you can, doesn't mean you should" my Wife
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Old 10th December 2008, 05:18 PM   #15
Gooch is offline Gooch  United States
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Looks like an old Heath kit.
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Old 10th December 2008, 05:41 PM   #16
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My guess it's an old Bell & Howell amp from an old Cine projector. 15Watts is the absolute limit. It's certaintly not a Radford, as the layout is cramped tight. Radfords get V. hot and sound poor.
Judging from your comments, the front panel has been added and perhaps camuflagued the entire amp. B&H didn't use any special amp design.
Beware: these early amps often used an uninsulated AC/ DC chassis; ie common practise that the line plug HAD to be wired the correct way to avoid electric shock. Bell and Howell at the time i.e 1950's were high quality manufacturers so they would have used the standard mains isolating transformer, but even so do the checks first.
I've come across many vintage amps modified with total neglect to high voltage safety and users unaware of this.

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