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Old 26th July 2011, 04:52 AM   #1
jlsem is offline jlsem  United States
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Default For Sale BIG Output Transformer

I have a very large and heavy Freed output transformer to sell. It's a model QGA 42 and was designed for Class AB1 6550s. The primary is 5000Ω split and the secondaries are 2Ω, 4Ω, 8Ω, 12Ω, and 16Ω. It's easily good for 100 watts and is flat from 20Hz to 30kHz. It would make a great bass guitar amp. I only have one; if I had a pair I wouldn't be selling this one. The price is $100 plus $15 shipping in the U.S.

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John
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Old 26th July 2011, 12:14 PM   #2
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hey-Hey!!!,
PM sent; please consider it SOLD!
cheers,
Douglas
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Old 26th July 2011, 01:10 PM   #3
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I was going to point this one out to you, Douglas. Glad to see you had already responded.
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Old 26th July 2011, 04:11 PM   #4
jlsem is offline jlsem  United States
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Sold. Thanks, Douglas!
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Old 29th July 2011, 03:28 PM   #5
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hey-Hey!!!,
Just recieved it in the Post a few minutes ago. It arrived safe and sound thanks to your excellent packing job.

Now that I am likely going to be no luckier than you at finding a mate I will go and have it taken apart to learn its winding geometry and then have a few copies made. These copies will likely have U-L taps added, probably two sets for use with my E-Linear topology. If you'd still like to try an amp built around these fine OPT's let me know and I'll find you when the new run is made.
Best Regards,
Douglas
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Last edited by Bandersnatch; 29th July 2011 at 03:36 PM. Reason: typo
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Old 2nd August 2011, 12:56 PM   #6
jlsem is offline jlsem  United States
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That's good to hear. I'm curious as to what techniques Freed used to wind their transformers. They tend to have unusually good frequency response.

John
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