ribbon microphone - several conductors make higher voltage?

[gentlevoice1]

Hello forum'ers,

I'm considering making a ribbon microphone with a ribbon made of several conductors inside the magnetic field, i.e. instead of only one conductor. I reckon this would produce a higher output voltage (given same direction of induced current) but would like to make sure before I do it....

Any of you knows of this?

Thanks for reading & insights appreciated  8)

Jesper

 

[zebra50]

A couple of commercial mics have used side-by-side double ribbons to boost output. Of the top of my head the Oktava ML52 does this, as does this old boy...

http://www.xaudia.com/xaudia/Galleries/Pages/Geloso_Grampian_HMV.html#2

RCA used stacked ribbons for a different purpose - to control the pattern of the mic....

http://www.coutant.org/rca77b/index.html

Stewart

 

[Rob Flinn]

isn't this something like the fostex ribbon mic which had a voice coil printed on the ribbon.  Look at this http://www.coutant.org/m88rp/index.html

Maybe you could print several conductors onto a single piece of film ??

 

[gentlevoice1]

Hi both of you & thanks for your answers. This is exactly the kind of information I was looking for 

Maybe I can ask another one ... I once surfed the internet and came upon a website where there were short sound recordings of many different microphones, particularly vintage ones. I've searched for this again, however, cannot find it.

What I'm looking for are sound recordings of different microphones, preferably in very good quality, so that I can hear how different microphone types sound. Any of you know such a site?

Best regards,

Jesper

 

[VictorQ]

http://www.thelisteningsessions.com/home.htm
Was this your card?

EDIT: Looks like they took down the wavs... bummer. Still mp3, tho.

 

[gentlevoice1]

Hey 

No, it's a different place but this looks mighty interesting, although it's mainly mp3.

Will give it a listen - and if somebody else here knows of high resolution microphone files, I'd be interested to hear about it.

If others are interested I've found this link to Metaxas audio:

http://metaxas.com/pages/masnewfiles/index.html

Greetings,

Jesper

 

[gentlevoice1]

EDIT: BTW - any of you know why a ribbon microphone tends to drop off about 15 kHz? Wonder why ...  ???

Jesper

 

[zebra50]

Some responses in your other thread - http://www.groupdiy.com/index.php?topic=40443

 

[rodabod]

The Beyer M160 is stacked (and hideously difficult to work on). They didn't do that to increase output though...

 

[Marik]

The Beyer M160 is stacked (and hideously difficult to work on). They didn't do that to increase output though...

Hi Roddy,

Well yes... but let's put it differently, they just did not take advantage of lower output impedance of such stack and use higher ratio transformer to increase the output.

Best, M

 

[gentlevoice1]

hey all 

first @zebra50 - thanks for the link to my "lost" thread. I thought it had gone...

And, then reading your feedback - thanks  - it seems to me that, yes, more smaller ribbons alongside eachother boost output (and also have other effects). That's very good to know, thank you!

Best regards,

Jesper