Needed Manley All Tube Mono Mic Preamp Info

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ForthMonkey

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I need some info about Manley all tube mono preamp.

What are in & out transformers? I can't find info_Only i know input transformer 6469 and output transformer  9611.I don't know what it means.There is no something like cross reference.

And what about 6414 tubes? Can i use 12AT7 instead of 6414? Tried 12AT7 with spice and looks like good. But i will use 6414.

Thanks.
 
pucho812 said:
Manley has their own in house transformer guy, so you might just be looking at manley part numbers.

Thanks.

Yes,but there is no info.I think i can use 150:10K input and 600:600 output.

No problem with circuit but transformers.... :-\
 
i had a schematic of mp, it was showing Sowter 6469f (1:7) and unbalanced no trx. output


 
kambo said:
i had a schematic of mp, it was showing Sowter 6469f (1:7) and unbalanced no trx. output

Thanks!

I can't find any info about Sowter 6469f but 3195 is ok,i guess.(1:7 200:10K) There is optional xformer balanced output in circuit that what i have.

Do you remember anything about tubes?
 
See this http://www.manley.com/40mpb.php and https://www.gearslutz.com/board/expert-question-answer-archives/1773-manley-pre-derived.html

EveAnna Manley discloses a lot about this mic pre. I'm guessing they learned a lot from The Mastering Lab mic pre, as they hired it's designer to consult for them. http://recording.org/index.php?threads/white-cathode-followers-in-pro-audio.43890/

Manley uses very large MIT MultiCaps to couple the output. And they used Sowter transformers before they started winding their own. Maybe ask Sowter what the input transformer was?

Hope that helps. Google is your friend.
 
ForthMonkey said:
kambo said:
i had a schematic of mp, it was showing Sowter 6469f (1:7) and unbalanced no trx. output

Thanks!

I can't find any info about Sowter 6469f but 3195 is ok,i guess.(1:7 200:10K) There is optional xformer balanced output in circuit that what i have.

Do you remember anything about tubes?

sorry, didnt c this... 

input : 6072
output : 6414

cheers
kambo
 
mjrippe said:
ForthMonkey said:
Thank you all!

But i can't understand which transformers are 6072 & 6414...

Not transformers, tubes.  6072 is 12AY7.  6414 is somewhere between a 12AV7 and a 12AT7, industrial grade.

:eek: I thought 6072 & 6414 are something like transofmer reference  number.Thank for explanation.

I will try 12AX7 and 12AT7.

But still i'm not sure about transformers.

 
Did someone say manley?

manley_mono_micpre_4.jpg


The insides look similar to the mastering lab pres which I also posted photos of.  Not sure if the tube compliment is the same or not.
 
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