R/E/P Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: 1 ... 3 4 [5] 6 7   Go Down

Author Topic: Neumann reissues the U67  (Read 41995 times)

aremos

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 59
  • Real Full Name: Ariel Remos
Re: Neumann reissues the U67
« Reply #60 on: May 23, 2018, 01:43:08 PM »

Now you have 2 power supplies and can switch to find out if the problem follows the microphone or the PSU -  if the problem reappears at all.
Does this problem show up when you plug the PSU into a certain wall outlet or use a certain power cable?

The same issue occurred one month apart, in the exact same way, with completely different units!
It's as if both mics (along with a different PS, different mic cable, different PS cable) had to go through some type of "settling in"?
All of a sudden, after powering up for the first time & 1.5-2 hours of working perfectly & sounding fine, the same hum started emitting & no signal being able to be recorded. After shut-off (1/2 hour) & then powering up again the mics have been working fine.

The odds of this happening only to me must be astronomical, unless it's something common. Hence why am asking & very curious if it's happened to anyone else.
Logged

klaus

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2209
Re: Neumann reissues the U67
« Reply #61 on: May 23, 2018, 01:58:30 PM »

When I will review the mic (as soon as VK has a spare to send me), I will look at this issue.

My suspicion: it's the same issue I had once with an M150 power supply of similar construction: A Chinese-made AC-DC converter is embedded in the supply, similar to what a wall wart does, and it shut down (a type of circuit breaker senses overheating or other maladies) until it recovered. I replaced the converter (a third-party item that can be found on eBay) and the problem never reoccured.

Have you checked the AC at the plug where you connect the power supply?
Logged
Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

aremos

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 59
  • Real Full Name: Ariel Remos
Re: Neumann reissues the U67
« Reply #62 on: May 23, 2018, 05:18:47 PM »

...
Have you checked the AC at the plug where you connect the power supply?

Yes. Haven't had any problem with anything else plugged into it (including a C-800G & REDD mics).
Logged

klaus

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2209
Re: Neumann reissues the U67
« Reply #63 on: May 24, 2018, 03:11:05 AM »

I meant the voltage coming out of the wall.
Logged
Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

brucekaphan

  • Newbie
  • *
  • Offline Offline
  • Posts: 35
Re: Neumann reissues the U67
« Reply #64 on: June 29, 2018, 06:33:21 PM »

Is Klaus' U67 reissue review still forthcoming, or has he done it already and somehow I missed it?
Logged

klaus

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2209
Re: Neumann reissues the U67
« Reply #65 on: June 29, 2018, 07:15:59 PM »

Bruce,
It's forthcoming, in about a week. Lots of surprises, too!
Logged
Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

brucekaphan

  • Newbie
  • *
  • Offline Offline
  • Posts: 35
Re: Neumann reissues the U67
« Reply #66 on: June 30, 2018, 06:40:27 AM »

Thanks, Klaus! Excellent news!
Logged

RuudNL

  • Full Member
  • ***
  • Offline Offline
  • Posts: 122
  • Real Full Name: Ruud van Steenis
  • There is a solution for every problem!
Re: Neumann reissues the U67
« Reply #67 on: June 30, 2018, 08:51:53 AM »

Looking forward to read about the "surprises"!
Logged

ratite

  • Newbie
  • *
  • Online Online
  • Posts: 26
Re: Neumann reissues the U67
« Reply #68 on: July 07, 2018, 07:56:15 AM »

C'mon Klaus out with it!
Logged

aremos

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 59
  • Real Full Name: Ariel Remos
Re: Neumann reissues the U67
« Reply #69 on: July 09, 2018, 11:37:39 AM »

C'mon Klaus out with it!

Klaus,
Please take your time. As we'd want something well done - meticulous & thorough.
Logged

klaus

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2209
Re: Neumann reissues the U67
« Reply #70 on: July 09, 2018, 03:20:31 PM »

Writing, writing, writing...
Logged
Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

aremos

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 59
  • Real Full Name: Ariel Remos
Re: Neumann reissues the U67
« Reply #71 on: July 10, 2018, 10:32:30 AM »

In the vox of Gomer Pyle:

"Surprise, surprise, surprise" ... with pictures?
Logged

klaus

  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2209
Re: Neumann reissues the U67
« Reply #72 on: July 10, 2018, 01:24:49 PM »

Of course, with close-ups!
Logged
Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

Deuce 225

  • Newbie
  • *
  • Offline Offline
  • Posts: 7
  • Real Full Name: Tim Cochran
Re: Neumann reissues the U67
« Reply #73 on: July 24, 2018, 06:59:38 PM »

Our U67 originally came from Belgium and the transformer is strapped for 200 ohms.  My understanding is that provides 6db more output. I am looking forward to reading Klaus's upcoming review.

Tim Cochran

www.tracehorse.com
Logged

RuudNL

  • Full Member
  • ***
  • Offline Offline
  • Posts: 122
  • Real Full Name: Ruud van Steenis
  • There is a solution for every problem!
Re: Neumann reissues the U67
« Reply #74 on: July 27, 2018, 03:53:35 AM »

U67 reissue: to buy, or not to buy, that's the question!
(I hope to know more after reading the review.)
Logged
Pages: 1 ... 3 4 [5] 6 7   Go Up
 



Site Hosted By Ashdown Technologies, Inc.

Page created in 0.071 seconds with 22 queries.