Help me id this Supro.

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galtjunk
Posts: 247
Joined: Mon Jan 30, 2006 1:23 pm
Location: NM

Help me id this Supro.

Post by galtjunk »

Grey cabinet with white stripe.
Supro printed on grille cloth.
2 x 10.
Speaker code 285928. Dates to 59 or 60?
2 7027, 3 12ax7, 1 5u4.
2 channel, 2 inputs on each channel.
2 volume, 1 tone, speed and intensity controls.
Split chassis. Controls and 12ax7's on top.
Bottom chassis is on right side with 2 7027's, 5u4g, cap can and power transformer.
Bottom chassis is marked for 7027 and 5u4.
When I got it, it was completely dead.
I pulled and checked the tubes.
All tested good but 1 7027 had a broke center pin.
I aligned the 7027 properly.
I put in a new fuse and turned it on.
Everything powered up.
I haven't tested any further yet.

I can't seem to find a schematic under Supro, National, Gretsch or Valco that match the amp.
Can anyone get me a model number or schematic?
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sluckey
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Joined: Sun Jul 22, 2007 7:48 pm
Location: Mobile, AL
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Re: Help me id this Supro.

Post by sluckey »

It's a 1690T Coronado. Probably 1959 year. Take a look...

https://el34world.com/Forum/index.php?topic=19661.0

And here's the schematic. Some came with 6L6s. Others had 7027.

https://el34world.com/charts/Schematics ... _1690t.pdf
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galtjunk
Posts: 247
Joined: Mon Jan 30, 2006 1:23 pm
Location: NM

Re: Help me id this Supro.

Post by galtjunk »

Thank you.

The schematic is a little different but it did help get the repair done.
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