diyAudio (
-   Equipment & Tools (
-   -   Bruel & Kjaer 2639 Service Manual (

lvigone 10th April 2012 08:10 PM

Help: I'm desperately looking for Bruel & Kjaer 2639 Service Manual
Does anyone have a copy of the B&K 2639 mic preamplifier service manual?
I need the schematic to repair a faulty unit.

Many thanks.

lvigone 23rd April 2012 08:15 PM

Help: I'm desperately looking for Bruel & Kjaer 2639 Service Manual
Service Instructions found.
Thanks to a very kind german company!!

m2003br 6th May 2012 01:18 AM

Hello Luigi,

I would be pleased if you send me a copy of the 2639 manual, for my personal collection.
For your repair, if you need, I'm glad to help you.

Thank you.

Kind regards,


lvigone 6th May 2012 02:47 PM

Hello Marcos,

please, PM me your e-mail and I will send you B&K 2639 service instruction.

Acooustics 25th May 2012 09:32 PM

Hello Luigi.

I would also be very grateful for a copy of the B&K 2639 Service manual (I haven't yet figured out how to get the case open without damaging it!!!!).


zwedi 18th June 2012 10:18 AM

Hi Luigi,

I would also ask about these service manual - I have problem with noise at low levels, and I would like to look into, but also I don't want to damage it.

Best regards

Drifter in the Dark 26th September 2012 08:42 AM

B&K 2639
Hi, I also have 2 of these preamps that are not working, and I
Am uncertain how to open them up. So a service manual
Would be really handy. Do the bodies separate in the mIddle
Please help.

zwedi 4th October 2012 01:42 PM

Hi Drifter, I also have 2645 preamp which is simillar to 2639 - I'm also wondering how to open it, but I'm pretty sure that it doesn't open in the middle (i use microscope to look at the case ).
I think that on the bottom side - black cover is screved to the body - but I'm not sure

arni 13th August 2014 08:11 AM

Opening 2639 preamplifier
This is an old thread, but this information can be helpful for anyone meddling with Bruel & Kjaer microphones.
The case is opened in the middle, but screwed clockwise to open (reversed thread). The metal is very soft, so be careful. I usually wind a cable around the housing to get a grip, but if that is not enough you should drill a hole in two wooden blocks and split them, to make a secure and soft grip. B&K have special pliers for this purpose (WA 0327), but I assume those are not cheap.

gautama1 14th November 2014 10:38 AM

Hello Luigi,

I would be happy if you send me a copy of the 2639 manual, I need to repair, would be delighted.

Thank you.

All times are GMT. The time now is 03:48 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2