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Golden Age R1 mkIII mod?
Old 12th November 2009
  #1
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Golden Age R1 mkIII mod?

Hi.
Does anyone have bought a GA R1 mkIII? And do you if mods are possible?
Maybe the tranny?
Thank's!
Old 24th November 2009
  #2
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Nobody try?
Old 24th November 2009
  #3
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All ribbons would benifit from a quality transformer.
Most chinese lack that so that would be the direction you should look at.
Cinemag and Lundhal both offer good ribbon transformers designed after thos used by RCA. cost is somewhere around 40-60$.
You might wana visit prodigy pro diy's second hand "black market" and look for one for a lower price. Alot of DIYers there perticipate in group buys and left with unneeded parts which they later sell.
Old 24th November 2009
  #4
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Matti's Avatar
GA R1 mkIII you are referring to is the active one? That might make things bit complicated to answer without seeing one opened.

Matti
Old 25th November 2009
  #5
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Ok thank's for the informations.

Lundhal make a tranny (1927A) for active ribbon mics. I don't know if it is corresponding...
Old 25th November 2009
  #6
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Doesnt the active stage come after the transformer?
Ribbon->high turn ratio transformer->active fet makeup stage-> output
Old 25th November 2009
  #7
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Matti's Avatar
I have the impression that you might find 2 transformers in that mic,
at least in the tube active one

Matti
Old 26th November 2009
  #8
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How does the stock mic sound on vocals?
Old 26th November 2009
  #9
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Matti's Avatar
Golden Age R1 Ribbon microphone review | ribbon microphones
down the page
I dont have one... or any ribbon mics at least now

Matti
Old 26th November 2009
  #10
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Hi Tomer.
I don't know very well electronics... So I can't answer...

Matti , There is ONE transformer in the mkIII
Check the link
Picasa Web Albums - telmic - Mics

Miscend , I did not test the mic on vocals yet but on drums overhead it's very cool and sweet. with punchy sound .
Old 27th November 2009
  #11
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Matti's Avatar
Tomer is right about the place of the transformer in the signal chain.
They have a tube active modell ( made for them ) also and that has 2 transformers, I recall.

Matti
Old 27th November 2009
  #12
Gear Nut
 

Cheap ribbons

Hi, I have some dual bobbin 30:1 transformers for ribbons that are the size of the Peluso BV8 and easily fit in these chinese ribbons and they are $45 including shipping

Cheers, Dave

Advanced Audio Microphones
Old 27th November 2009
  #13
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Then just find a drop in part and do a transformer replacement ,
Perhaps take the offer by Dave.
Old 28th November 2009
  #14
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I spoke to David and I think I will stay wih the stock tranny.

I compare it to a Blue Blueberry mic for the vocal.

The Blue has less hum no surprise.
The R1 has beautiful low end frequencies. Great for "low pitch" vocal male or female.
Of course we have to search and boost hi end frequencies. But it sounds very narural.
I think with a great pre it would work fine.

I'm glad for the price!
Old 28th November 2009
  #15
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What made you change your mind?
Old 28th November 2009
  #16
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Dave tried to bring in his tranny in cheap ribbon mic like GA and for him there is no big difference for the price. A little bit more Hi end but not a lot.
Old 28th November 2009
  #17
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It is the active circuit that "lesser" the importance of a quality transformer or what?
Because I did some A/Bing on all sorts of passive chinese ribbons and the difference between transformer moded and stock is very much noticable.
Old 29th November 2009
  #18
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Sorry I am not an expert...I think it is the case. Maybe the design is more important in active ribbon.
But I am sure in passive design it Will work better.
Do you have some suggestions?
Old 29th November 2009
  #19
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Matti's Avatar
I would consider a Lundahl to that mic.

Matti
Old 29th November 2009
  #20
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Lundhal 1927A?
Old 29th November 2009
  #21
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Matti's Avatar
Cannot remember the exact type and donΒ΄t know the ratio of whats in there originally, to be exact ;-)

Matti
Old 3rd April 2011
  #22
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Quote:
Originally Posted by mr6100 View Post
Lundhal 1927A?
Did you ever go with the transformer mod on this???
Old 4th April 2011
  #23
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Not yet sorry , can not answer if it is better or not...
Old 14th May 2012
  #24
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GA R1 mkIII mod info

Hi,

I bought two of these mics and I modded one of them by OktavaMod to see how much better they would sound.

Before the mod, I tried them together in stereo on my Acoustic Piano, they sounded very natural. I was running them through an API 3124+ into PT.
I also like the way they sounded on drums when playing with brushes and placed a few feet away from the set in stereo. They are very warm and if the room sounds good, so will the drums as that has a lot to do with it (IMO) when you are not close miking, and as these also pick up from the rear.

After the mod I compared the sound and the modded mic had less low end confusion and a bit more consistent waveform (You could actually see the difference in the waveform visually). It still sounded as nice as before, but a bit clearer and more focused. I actually liked the combination in stereo using the modded mic for the low end and the original mic for the top end.

I was thinking about adding a transformer as I was looking at the Cascade 77 mic (Lundahl LL2913 transformer mounted on a custom PCB board, along with Evidence Audio solid-core copper wire and a Chicago Switchcraft XLR connector)

After reading this thread, I decided to leave them as is. They work fine, and I am pretty much over the modification vibe that I was caught up in a while ago.

You can also try JJ Audio for mod's. They did a mod and also put a Jensen transformer on my Oktava MK319 and it really came to life ($300 mod cost).

Good luck, and I hope this helps a bit.

Joey
Old 22nd February 2013
  #25
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Sorry Joey ! I don't have seen your mesage !
Thank you for this post.
I removed the headbasket for the moment and it is much better. More open.
I will change the ribbon this week (when I'll receive the foil ) 1.8 micron.
I have a R1 mk2 (passive ) . I do the same and will change the stock tranny.
I will post as soon as I finish that !
@+ Marc
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