MrG

Collins Transformer Datasheet?
« on: November 02, 2018, 11:00:32 PM »
Hey all,

Does anyone have a link to a solid datasheet for these trafos? Specifically the PA-1A?

Thanks in advance.

Mark

Mark Galup | Producer/Mixer/Mastering Engineer
ReelRecording.com
MarkGalup.com


EmRR

Re: Collins Transformer Datasheet?
« Reply #1 on: November 03, 2018, 10:49:57 AM »
I know Collins pretty well and I don’t know what that is.   
Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

MrG

Re: Collins Transformer Datasheet?
« Reply #2 on: November 03, 2018, 09:17:03 PM »
Thanks, Doug.

Here’s a photo to help potentially solve this mystery. Any thoughts?

Thanks much,
Mark

Mark Galup | Producer/Mixer/Mastering Engineer
ReelRecording.com
MarkGalup.com

scott2000

Re: Collins Transformer Datasheet?
« Reply #3 on: November 03, 2018, 10:43:19 PM »
looks like a phono pre amp????

found this clue too???


http://www.hf-antenna.com/Flotsam/Console1010/AG1010-4.jpg
« Last Edit: November 03, 2018, 10:53:44 PM by scott2000 »

EmRR

Re: Collins Transformer Datasheet?
« Reply #4 on: November 03, 2018, 11:06:42 PM »
those aren't transformers, they're plug in SS amps. 
Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

MrG

Re: Collins Transformer Datasheet?
« Reply #5 on: November 03, 2018, 11:08:44 PM »
those aren't transformers, they're plug in SS amps.

Thanks, Doug. Do you happen to know how they affect the signal? Is it a ratio thing or is it a several fixed settings? What are impedances in and out?

Thanks again,
Mark

Mark Galup | Producer/Mixer/Mastering Engineer
ReelRecording.com
MarkGalup.com


EmRR

Re: Collins Transformer Datasheet?
« Reply #7 on: November 04, 2018, 02:02:04 PM »
Yeah, this is Autogram era, probably not even Collins design.  These sorts of amps exist in Altec, Collins, Gates, and others.  SS plug-ins.  Little to no value other than people with those consoles. 
Best,

Doug Williams
Electromagnetic Radiation Recorders

"I think this can be better. Some kind of control that's intuitive, not complicated like a single knob" - Crusty

"Back when everything sounde

abbey road d enfer

Re: Collins Transformer Datasheet?
« Reply #8 on: November 11, 2018, 05:41:08 AM »
Thanks, Doug. Do you happen to know how they affect the signal? Is it a ratio thing or is it a several fixed settings? What are impedances in and out?

Thanks again,
Mark
These are not transformers. They are phono preamps. 47 kohm input impedance, nominal level about 5mV, frequency response according to RIAA curve.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.

 

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