1290 Transformers

[clintrubber]

OK, thanks all - I understand this that in 'theory' a 31267 could work fine but in real life with a ribbon mic it's a diferrent story then...

FWIW, I'll try to compile some DCR-figures from the info that's around.

Let's start modest, OEP, I'm having the data handy here already:

A262A3E

                       PRI   SEC
ratio               1+1:6.45+6.45
impedance           150+ 6.25+
indiv windings      150 6.25k
series connected    600 C.T. 25k C.T.
parallel connected  150 6.25
DCR                 9.6+9.6 535+605

Will try to find the rest.

 

[Flatpicker]

[quote author="clintrubber"]...I understand this that in 'theory' a 31267 could work fine but in real life with a ribbon mic it's a different story then...[/quote]
Well, after hearing Jen's experience, sounds like it's a different story with any mic.

I happen to have one that I was planning to use for line-level input (as it was intended) in a full blown 1073 clone, but that project keeps moving further into the future...

 

[clintrubber]

[quote author="Flatpicker"][quote author="clintrubber"]...I understand this that in 'theory' a 31267 could work fine but in real life with a ribbon mic it's a different story then...[/quote]
Well, after hearing Jen's experience, sounds like it's a different story with any mic.

I happen to have one that I was planning to use for line-level input (as it was intended) in a full blown 1073 clone, but that project keeps moving further into the future...[/quote]
You're right, not only for ribbons then - so now I'm getting real curious about this difference between the 'theoretical' info from Joe M. (although he does mention the lost humbucking of course) and what people are experiencing when using those line-inputs for mic-use.

Thanks,

Peter

 

[CJ]

Take it apart here, or start a new thread?
That Joel is one, bad, mutha..===shut your mouth!===I jus talkin bout Joel!

 

[tony dB]

hack it here!

 

[AnalogPackrat]

:shock: Oh no! :shock:

 

[clintrubber]

[quote author="AnalogPackrat"]:shock: Oh no! :shock:[/quote]

Don't ! Here, take this OEP but don't do the green one




...

Yes please, here.

 

[rascalseven]

How 'bout a new thread? Might make it easier for people when doing a seach.

"Alas, poor Marinair, I knew him well...."

(cue drum roll.....)

:twisted: :twisted: :twisted:

JC

 

[clintrubber]

[quote author="rascalseven"]
"Alas, poor Marinair, I knew him well...."
[/quote]
As in 'The Rhyme Of The Ancient Marinair' ? :roll: :wink:

 

[tony dB]

Peter, jij hebt precies naar veel foute muziek geluisterd...

ik ook :green:

Aces high!

 

[clintrubber]

[quote author="tony dB"]Peter, jij hebt precies naar veel foute muziek geluisterd...

ik ook :green:

Aces high![/quote]

:grin:

Ha ja, eerst was daar op de middelbare school het oneindige origineel, het gedicht met de 666 strofen waar we in de Engelse les mee werden doodgegooid. Een vriend mocht er graag uit declameren tot gruwel van zijn omgeving - en dat was nog voordat IM er een deuntje onder zette. Maar inderdaad, dat lied spookte door m'n hoofd ! :wink:

't Is hier inmiddels wel duidelijk dat IM-platen de tand des tijds wat minder goed hebben doorstaan dan , eh zeg M'head :twisted:
Ha, maar IM heeft in elk geval de functie gehad dat ik er door heb leren spelen (OK, alleen in E-min dan :wink: )

Groet !

Peter

 

[tony dB]

E min - C maj - D maj, werkt al meer dan 20 jaar voor IM :green: :thumb:

 

[tony dB]

sorry, we got carried away in youth nostalgia ...

back to topic here

 

[clintrubber]

[quote author="tony dB"]E min - C maj - D maj, werkt al meer dan 20 jaar voor IM :green: :thumb:[/quote]

Ja opvallend amazing inderdaad hoeveel nummers er met hetzelfde patroon gemaakt kunnen worden :thumb: als je maar gewoon doorgaat met herhalen... ze zullen het nog wel steeds ? Geen idee verder, ik ben na Powerslave afgehaakt & naar wat heftiger muziek gaan luisteren :twisted:

 

[tony dB]

wat stijl is voor de ene, is muzikale bloedarmoede voor de andere...

Back to 1290's

 

[tony dB]

and trannies... :thumb:

 

[clintrubber]

[quote author="tony dB"]sorry, we got carried away in youth nostalgia ...

back to topic here[/quote]

Sorry guys - we were just contemplating which 1290-suited type would be best for transforming those IM-song-patterns into something more interesting. :wink:
So not that OT, but OK...

 

[EvLoutonian]

[quote author="damiafix"]Hi,
A little question:

the Marinair 10368 it's good for my 1290? Who's his caracter?

Regards, Damiano

I once tested every permutation of a 10368 being used as mic input to a BA283AV and I found that wired 1k2:2k4, forwards, for a 3dB stepup was the best result. The character is very mellow with a subdued high end and extended low end. Note that the secondary Z is half that of a 10468, but I terminated it the same (5k). I actually liked it better than 10468 for many applications, but because this is a line input transformer the DCR is too high for some mics. Ribbons in particular sound small and tinny through it I'm told.
[/QUOTE]


With 10368 transformer, couldn't you also wire it (in reverse orientation) to go from the 600 ohms input to 5k ohms secondary (+9dB?) and use as mic input stage this way?

Or did that create some other issues with frequency response or headroom or so?