tmbg

u87 stuff
« on: November 12, 2004, 09:19:06 AM »
Ok so I had the capsule apart last night, and learned a few things...

the gold is going away :(  I cleaned as gingerly as possible, and now it's not quite as prone to drop out, but it still does to some degree, and there's a noticeable loss of midrange on the diaphraghm that's missing the most gold... I suppose the only thing to be done about that is a replacement capsule.   What do they cost?


Also, can you tell year of manufacture by serial number?  The serial number is 4 digits, 9xxx (don't recall the exact number).


u87 stuff
« Reply #1 on: November 12, 2004, 09:31:59 AM »
Send an email to this address
[email protected]
And they will reply with the date of manufacture

Gus

u87 stuff
« Reply #2 on: November 12, 2004, 10:07:04 AM »
is the gold flaking off on the front side?  Go to the neumann site and find the u87 manual in might be in the infopool section or the historic product section.  You can find the pn and then call neumann for a price.

If Cardiod is all you are going to use you can reverse the capsule .

tmbg

u87 stuff
« Reply #3 on: November 12, 2004, 10:17:37 AM »
Yeah the gold is flaking on the cardioid side.  Well, it's flaking worse on the front, there's some flaking on the back, but the front is so bad that it's significantly affecting response.  I've emailed a couple of companies that offer capsule exchange re-diaphragming services, and I'll call sennheiser US and see if I can get a price on new capsules, although I imagine that it'll be prohibitive.

The mic itself is very old and very beat up, the body is pretty dented and scratched, but the electronics seem sound.  The capsule carrier needs a bit of attention, the ball bearings that provide detents for the switches are gone, and the little plastic nubbin on the pad switch is broken off.  The FET is indeed the 2n part you mentioned, btw.

Is this mic worth keeping and fixing up because of its age?  Or would I be better off trying to sell it for as much as I can get considering condition, and buy a less used one off the ebay...

tmbg

u87 stuff
« Reply #4 on: November 12, 2004, 10:31:17 AM »
$675 for a new K87 from Sennheiser... yeow

I'm hoping some of these re-diaphragming services might prove less expensive :/  I guess they'd have to be, or why wouldn't everyone just buy new capsules?

tmbg

u87 stuff
« Reply #5 on: November 12, 2004, 02:04:16 PM »
So, reskinning might cost me about $300 plus shipping...

half price, eh.  How do you folks suppose a reskinned capsule would sound as compared to a brand new one?

dale116dot7

u87 stuff
« Reply #6 on: November 12, 2004, 02:15:44 PM »
Depends on who does it and how close they get to the original Neumann specs. It's actually not that difficult to put on a new diaphragm if you have a tensioning jig - I've done it, but getting the right tension means knowing what it is supposed to be in the first place. I don't know if Tracy Korby reskins them or not, but he's supposed to be quite good at doing mic work.

-Dale

CJ

u87 stuff
« Reply #7 on: November 12, 2004, 04:37:39 PM »
There's a guy named Tony whom you might want to converse with.
 :idea:
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

Marik

u87 stuff
« Reply #8 on: November 12, 2004, 04:45:31 PM »
Quote from: "cjenrick"
There's a guy named Tony whom you might want to converse with.
 :idea:


If Tony's last name is Merrill, than  :thumb:
Samar Audio & Microphone Design

www.samaraudiodesign.com

The Art of Ribbon Microphones

tmbg

u87 stuff
« Reply #9 on: November 13, 2004, 02:28:39 AM »
And how would I get in touch with dear Sir Tony?


Marik

u87 stuff
« Reply #10 on: November 13, 2004, 04:45:08 AM »
Quote from: "tmbg"
And how would I get in touch with dear Sir Tony?


http://www.spaudio.com
Samar Audio & Microphone Design

www.samaraudiodesign.com

The Art of Ribbon Microphones

Gus

u87 stuff
« Reply #11 on: November 13, 2004, 11:10:40 AM »
TMBG

did you get my PM?

pucho812

u87 stuff
« Reply #12 on: November 13, 2004, 11:42:12 AM »
SPaudio? Thats stephen pauls place. He is the Neumann genius. God rest his soul. You know I piced up a broken 87 for a guy for $500.00 I figured it wouldn't be too hard to fix espeically since the problem was that it had a short. When I couldn't find it I sent the mic to SPaudio. They fixed it quickly and it works great.  The problem was a broken solder conenction  that I couldn't find. But they kick asss and have a good turnaround time.
You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is.


 

Related Topics

  Subject / Started by Replies Last post
6 Replies
2143 Views
Last post December 09, 2005, 01:00:31 PM
by Gus
11 Replies
3523 Views
Last post May 12, 2006, 04:22:35 PM
by mbrebes
14 Replies
3632 Views
Last post November 29, 2007, 12:17:23 PM
by electrochronic
3 Replies
1710 Views
Last post January 27, 2008, 12:46:20 AM
by kazper