Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 4th July 2002, 06:47 PM   #1
alvaius is offline alvaius  Canada
diyAudio Member
Join Date: Feb 2002
Location: Toronto
Question Microphone suggestion for speaker testing - Thank You in Advance

Hello fellow DIYers.

I have the electrical set up
- SoundBlaster Extigy (to my laptop)
- good cassete player for a microphone Pre-amp if needed
- Amplifier - My old NAD2050
- Software [http://www.sumuller.de/audiotester/maine.htm] - cheap and highly recommended!

The Anechoic chamber
- O.K., it is an elevated platform on my outside deck

Now, all I need is a microphone that won't set me back an arm and a leg. Would prefer a studio mike with a good 20-20 response, but I would live with just about any good microphone that has a well calibrated response that I can then compensate the speaker response with.

? If my outdoor response is somewhat anechoic, does it matter if the microphone is unidirection or omnidirectional [responses from experience preferred].

Looking forward to your suggestions and thank you in advance.

  Reply With Quote
Old 4th July 2002, 07:35 PM   #2
diyAudio Member
Join Date: Sep 2001
Location: Sth. Oz
Try "Old Colony Sound Labs" (or something like that) Mitey Mike...
These are quite cheap and they offer a caliberation service (extra) that comes on a floppy that you can load into your pc. For ultimate accuracy I recomend the caliberation it is well worth it. I use one with my "Imp" audio analyzer and it works a treat...
  Reply With Quote
Old 4th July 2002, 09:18 PM   #3
CHRIS8 is offline CHRIS8  United States
Account Disabled
Join Date: Dec 2001
Location: VA, USA
Cheapest mic of accuracy is to make your own using a panasonic capsule. You can get capsules with a calibration file, that are rather accurate for $32 + shipping from Kim Giardin. These are the same capsules used in the mitey mike, which in addition is only a tube added to hold the mic capsule. He can be reached at:


If you use a preamp, please insure it has a linear frequency response, or obtain one that does. You can make your own, or partsexpress.com offers an ok priced, accurate mic preamp also. part number: 245-032 or they also have a velleman kit unit, for about $12, you need to add jacks, case and regulated power supply to use it though. Probably $45-$50 plus labor for that unit in the end.

  Reply With Quote
Old 5th July 2002, 07:24 AM   #4
ergo is offline ergo  Estonia
diyAudio Member
Join Date: Mar 2001
Location: Tallinn, Estonia
I'm using EMM8 mic from

and I'm very happy with it. It's also very reasonably priced and comes with calibration data....

  Reply With Quote
Old 5th July 2002, 09:38 AM   #5
diyAudio Member
Join Date: Mar 2002
Location: Dublin, Ireland
Linkwitz Lab pages have some info on modifying the Pannasonic capsule to get the most from it.


  Reply With Quote
Old 5th July 2002, 04:12 PM   #6
alvaius is offline alvaius  Canada
diyAudio Member
Join Date: Feb 2002
Location: Toronto
Thank you for the great replies. I am going to buy them from Digikey. They are quite inexpensive!
  Reply With Quote
Old 5th July 2002, 05:09 PM   #7
jmiyake is offline jmiyake  United States
diyAudio Member
Join Date: Apr 2002
Location: San Jose, Ca.
Default Which mike?

Hi alvaius,
Which Digikey mike are you considering and what is your reasoning regarding that choice?

  Reply With Quote
Old 5th July 2002, 11:18 PM   #8
alvaius is offline alvaius  Canada
diyAudio Member
Join Date: Feb 2002
Location: Toronto
I am going to get a couple of each of the following:

WM-60AY and WM-61A. The WM-61 is a bit less sensitive but has better signal to noise. If you look above there is a link to some modifications.

If you go to the Panasonic Web-Site and look at the specs, these things are extremely flat (we are talking less that $5 each!).


Look at the response curves, they are no more than a few db off from 20-20 and where I am likely to have cross-over frequencies, i.e. 2K, they are very good!

  Reply With Quote
Old 5th September 2002, 07:26 AM   #9
diyAudio Member
Join Date: Feb 2002
Location: Germany
Question low distortion measuremente mike?

Anybody got any suggestion as to what type of microphone has very low distortion so it could be used to characterize the distortion of a high-quality driver?

The link to Linkwitz labs had a description on how to change the FET in Panasonic electrets from common source to source follower to lower distortion. But I guess one could do better by replacing the FET with an op-amp or maybe by using something other than an electret...

  Reply With Quote
Old 5th September 2002, 07:40 AM   #10
diyAudio Member
Join Date: Mar 2002
Location: Dublin, Ireland
Hi Eric,

Instrumentation mics tend to be high polarisation voltage condenser capsules of relatively small diameter. The best manufacturer of these would be B&K who make stunningly good quality and beautiful kit that is a joy to use, as is all their instrumentation kit, but you pay for it. Unless you are willing to remortgage your house, stick with the modified WM-60AY and WM-61A.
  Reply With Quote


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Using Yamaha receiver calibration microphone for speaker testing? camshaft Multi-Way 0 25th March 2008 04:07 PM
Good microphone for speaker analasys? Geek Multi-Way 4 21st February 2006 10:46 PM
Microphone, testing environment? Thanks. parallax Multi-Way 4 8th September 2004 03:14 AM
Speaker Workshop - Microphone? ble0t Multi-Way 13 4th May 2004 02:19 PM
Speaker Workshop + Microphone = invaluable wintermute Multi-Way 26 5th December 2003 04:14 PM

New To Site? Need Help?

All times are GMT. The time now is 06:07 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2