Vintage SE OPT hook up confusion

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

I picked up 2 vintage SE OPT for el84 tubes and am unsure about the hookup.
There are 3 primary wires, Red , Blue, Maroon. Red is primary, and Blue goes to Pin7 (63 ohms) and Maroon? (16 ohms). What is maroon wire for?
There are 4 secondary wires Black , bare, Yellow, green. Black and bare are grounded. Yellow (.3 ohms to black) and Green (48 ohms to bare). Why are there 2 secondary circuits? Yellow and black and Green and bare are not connected. I think these came from a Motorola or Zenith single ended console. Thank you for the help. cheers, Dak

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Topic - Vintage SE OPT hook up confusion - DAK 20:10:33 09/22/14 (10)

RE: Vintage SE OPT hook up confusion - Tom Bavis 06:33:22 09/23/14 (9)

My bad! 620 Ohms not 63 primary resistance - DAK 16:02:07 09/23/14 (4)

Probably Zenith - DIY John 03:15:32 09/24/14 (3)

RE: Probably Zenith - DAK 10:29:26 09/24/14 (2)

RE: Probably Zenith - DIY John 03:30:21 09/25/14 (1)

RE: Probably Zenith - DAK 09:48:49 09/25/14 (0)

RE: Vintage SE OPT hook up confusion - DAK 09:40:16 09/23/14 (3)

RE: Vintage SE OPT hook up confusion - BofService 11:56:25 09/23/14 (2)

RE: Vintage SE OPT hook up confusion - DAK 12:13:05 09/23/14 (1)

RE: Vintage SE OPT hook up confusion - BofService 12:39:53 09/23/14 (0)

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