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Klaus Heyne's Mic Lab / Re: What happened to the Neumann forum?
« Last post by David Satz on June 02, 2018, 03:06:39 pm »
Some 28,000 messages, containing mainly Korean characters, were posted in several bursts during mid-November, affecting three of the four forums. All the prior, human-written messages remained in place, but those became difficult to access since so many SPAM messages were queued in front of them. From all I could see, the three forums were never hacked as such, but rather were defaced by the sheer number of the mechanized postings. The fourth forum was an archive compiled internally at Neumann which was "read only" to the general public, protecting it in this case.

Soon Neumann locked all four of the forums, preventing further posts. They left the contents, including the SPAM messages, visible for several months on the old URLs. In the meantime a major update of the Neumann Web site was already underway, and when that new version was rolled out early last month, the forums were taken off line.

Back in December/January I corresponded with the folks at Neumann/Berlin about this; I'd written some custom software that compiled a list of exactly which posts were SPAM and which ones were valid. I don't have specific permission to quote their reply, but at the time they were evidently considering some new arrangement for on-line technical discussions, and in any case they emphasized that all customers are welcome to write to them directly with questions.

I haven't wanted to be a noodge, so I haven't written back for an update. Maybe someone else here has heard from them more recently. But I'm not holding my breath. The forum took up a fair amount of Martin Schneider's time sometimes, and he's one of their leading product development engineers; no matter how much he enjoys dealing with the public (in at least four languages!), that use of his time had to be justified as a rational business decision. The forums were certainly interesting for some number of us, but Neumann is (gasp) part of a for-profit corporation that is responsible to its shareholders, and its business decisions may not be 100% identical to our wishes in all cases.

--best regards
Recording - Engineering & Production / Re: 4 or 8 compressors
« Last post by Nobtwiddler on June 01, 2018, 07:59:40 pm »
I agree with Fletcher...
As I only use Compression on drums, when I'm trying to do something a bit over the top, like squashing room mics...
That is unless, the mix is live, and there is NO mix down..
Otherwise, no need, until mix.

Anyhow, these are good, I had them in my original mobile unit for years. worked great, sounded fine.
The Quad Comp

These are also pretty nice, used them while doing sound for heavy rock bands a few years ago...

and finally, the best of the best in a small form factor...
Literally amazing!
Klaus Heyne's Mic Lab / Re: What happened to the Neumann forum?
« Last post by klaus on June 01, 2018, 01:57:19 pm »
In the summer of 2017 all Neumann forums were hacked, and flooded daily with hundreds of Chinese-character posts. Neumann has been busy introducing new products (U67, for one), and has not solved the complexity of this issue. Staff told me that revamping the site is harder than it seems.

I have no updates as to when the forums will be operational again.
Klaus Heyne's Mic Lab / What happened to the Neumann forum?
« Last post by RuudNL on June 01, 2018, 10:58:55 am »
As the title says: what happened to the Neumann forum?
In the past it was a useful source of information but it seems I can't find the forum anymore.
Any ideas?
Klaus Heyne's Mic Lab / Re: C12A connector maintenance
« Last post by Mickeyrouse on May 31, 2018, 10:43:53 pm »
The fibroid washers on the original C12A mount act as a kind of micro clutch. Being fiber, their life at this point is pretty much over. Steel or other washers will fit, but with metal it's pretty much an “all on-all off” situation.

For mine, I have found that stock Nylon (or Teflon) washers will do the trick. Better hardware stores will have these in their fasterner departments. You may have to buy over-size and file down to fit. But it will work.
Klaus Heyne's Mic Lab / Re: Neumann km54 faulty
« Last post by RuudNL on May 30, 2018, 04:04:53 pm »
My bet is a leaky capacitor. (Leak current.)
Klaus Heyne's Mic Lab / Re: Neumann km54 faulty
« Last post by gtoledo3 on May 30, 2018, 09:58:26 am »
I throw in for bad solder joint or bad resistor/cap...something like that.

The times of clear performance with the capsule lead me to think itís not the capsule...Along with other previous experiences Iíve had with similar noise and surrounding description of factors winding up being a leaky cap or bad solder joint.

Just a stab in the dark though.
Klaus Heyne's Mic Lab / Re: Neumann km54 faulty
« Last post by klaus on May 28, 2018, 05:55:55 pm »
There you have it: three cooks in the kitchen. Which is the right recipe? Any bets?

I'll put

50 cents on dish #2: electronic issue,
20 cents on #1: dirty capsule and
30 cents on: none of the above
Klaus Heyne's Mic Lab / Re: Neumann km54 faulty
« Last post by Kai on May 28, 2018, 05:14:09 pm »
I have not try the capsuleīs drying method Kai wrote (it scares me a bit), but i will probe it next days and let you know if the mic goes better...
Your reply #5 99% confirms a faulty capsule for me. Drying it will improve isolation for some time and the noise should be gone until humidity comes back.
If you fear to break it go for 70įC for one hour, then you're absolutely on the safe side.
Of course, plugging in a 50pf cap is a simple quick test that should be done before.
 If drying doesn't doesn't help or the noise doesn't change with the dummy cap:
- does the other tube show the same voltages as before?
- Did you connect pin 6 to ground? If yes, open the connection to check for a faulty C3.  If no, connect it in the female plug.

@Uwe:  I don't think the breath test isolates the problem in this case because it only adds a little to an already strong fault.
Klaus Heyne's Mic Lab / Re: Neumann km54 faulty
« Last post by klaus on May 28, 2018, 01:55:53 pm »
Before you attempt capsule cleaning, please substitute the capsule with a 40-50pf capacitor. That will determine whether it's a capsule of amp problem.
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