Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Dynamic Mic Repair -- Help needed
Dynamic Mic Repair -- Help needed
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 23rd October 2019, 07:51 PM   #1
f0m3 is offline f0m3
diyAudio Member
Join Date: Dec 2013
Default Dynamic Mic Repair -- Help needed

after building a lot of guitar effects, electric guitars etc. i started to try to understand more on audio equipment. Please tell me if it is not ok to post here but i have the feeling there might the right people around here.

I have an 1980s akg dynamic mic D320b wich has a hubucking coil and a bass rolloff switch.
The mic is in a good optical condition and basically working but: the volume is low and there is no bass. i checked the basic wiring and even dropped out the bass rolloff switch (its just plugged in). Everything seems to be ok.

Then i checked the three solderpads outside of the capsule which seem to be +pol, -pol and humbucking coil(outside the capsule).
Theres a nice drawing in this old manual: http://lcweb2.loc.gov/master/mbrs/re...Microphone.pdf
When i measure the three solderpads i can see they are connected to each other as they should. But the across the diaphragm coil i measured about 300 ohms and across the humbucker coil only about 10 ohms. Could there be a problem? maybe a broken humbucker coil?

I would really appreciate some tips on this problem.
  Reply With Quote
Old 30th October 2019, 03:32 PM   #2
chris661 is offline chris661  United Kingdom
diyAudio Member
chris661's Avatar
Join Date: Feb 2008
Location: Sheffield
Sounds like the capsule has issues. I've worked on a few mics that have shown similar. For the likes of an AKG D12, the fix is possible, but difficult: you have to remove the diaphragm, clean it, and then re-align it. It's something I offer as a repair service, but there's no guarantee that the mic will be repairable.

My recommendation would be to start looking for new microphones. The EV N/D767a is a decent mic in a lot of ways, and can be had for sensible money on the 2nd-hand market. My go-to is the Sennheiser e935, but they're not cheap.

My work: www.grimshawaudio.com
  Reply With Quote


Dynamic Mic Repair -- Help neededHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Soundstream XTA-480.2 repair help needed sporty2008 Car Audio 1 6th March 2016 04:30 PM
amp repair help needed light0070702 Car Audio 18 22nd May 2013 02:42 AM
NAIM CD3 repair, help needed please cchean Digital Source 1 23rd February 2010 09:36 PM
SONY TA 70, repair help needed jojospecial Solid State 2 5th November 2008 09:15 PM
Amp repair help needed. contaxchen Tubes / Valves 2 11th July 2005 10:22 PM

New To Site? Need Help?

All times are GMT. The time now is 10:21 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio