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noahsnyder

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Posts: 5 Member Since:10/05/2016

#21 [url]

May 9 17 11:29 AM

update

Hi All,
  Just thought I'd share an update on my 221s. After replacing one AC701 and much tinkering I was able to determine that the power supply was faulty. I am happy to report the mics are now fully usable and quite quiet on the correct supply. My Neumann NKM supplies work (I own a couple km54s) but are a little noisier than the new Grosser dual power supply that came with 221s when I bought them (actually the Grosser power supply that was swapped for the faulty one that came with the purchase - bad capacitor) and that is a little noisier than the Grimm power supplies I recently acquired. The Grimms are a little peculiar in that they have XLR 6 pin connections, so you either have to hack your cables or have new ones made. In any case the mics sound great and have a euphony on orchestral recordings that rivals the M50s. The equalization is quite different (both brighter and without the low end "bloom" of the M50s) but a with a comparble quality. These will see good use. Thank you all for your help and thoughts.

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maarvold

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Posts: 3,145 Member Since:23/01/2011

#22 [url]

May 10 17 10:11 AM

noahsnyder wrote:
...the Grimm power supplies I recently acquired...

I have a friend who is very interested in those Grimm supplies--do you like them?  Any additional observations or comments?  I believe Bruno Putzeys designed them which, in my experience, would be a good thing.  

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bockaudio

Platinum Blonde

Posts: 1,537 Member Since:02/02/2011

#23 [url]

May 17 17 6:18 PM

What Putzey gear has impressed you, Michael?
I love my 221b and wish I had another. It is living proof that microphone measurement techniques have changed since the 50's, and "flat" today means "thin" from back then. But of course mine is modified to accept higher SPL, internally switchable.

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maarvold

Aqua Marine

Posts: 3,145 Member Since:23/01/2011

#24 [url]

May 18 17 8:59 AM

bockaudio wrote:
What Putzey gear has impressed you, Michael?

 

I am using newly built power amps (built for me by Steve Hogan) that use Bruno-designed Hypex NC1200 and SMPS1200 modules and they are FABULOUS.  Because of the totally natural way they reveal more information than I ever heard before from my system (they replaced 2 Boulder 500's) I can't imagine ever wanting a different set of power amps.  

Last Edited By: maarvold May 18 17 9:03 AM. Edited 1 time.

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seth

Ruby Baby

Posts: 5,634 Member Since:26/01/2011

#25 [url]

May 19 17 7:51 AM

David, I have a pair of the Hypex NC400 DIY Monoblocks and they are spectacular for the same reasons Mike pointed out above.

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noahsnyder

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Posts: 5 Member Since:10/05/2016

#27 [url]

Jun 9 17 10:48 AM

Hi Everyone,
 MIke I do like the Grimm PSUs quite a lot. They are dead quiet and since I own KM54s, M221s and a M221B I can use them on multiple microphones. As I mentioned it's a bit of a pain because they use XLR 6 and 7 pin connectors (your choice; the idea being you can avoid units with different voltage settings being plugged into the wrong microphone) so I had to have new cables made because I did not want to be unable to use my old PSUs. Since I record so much quiet material (as I know you do as well Mike) noise floor is critical to me. For most users it would likely be less relevant.  Also, I'm really not sure if Bruno was involved in the PSU design, though I share your high opinion of him (I want to hear those Kii speakers bad). However, Eelco Grimm is also a sharp guy and I like his designs as well. The fine fellows at Grace Design turned me on to it and they're damn sharp too!

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