DIY measurement mic - Page 9

jzagaja · 16th March 2010, 09:51 AM

Amplitude difference between reference Bruel&Kjaer 4149 and MBHO MBNM 550EL.

rinx · 17th May 2010, 07:31 PM

OK, great thread!
While I do not understand english not yet very well, I have very trivial question. Just starting to build up my spekaer measurement system: using ARTA software (manual 180 pages HUH

), I do have EMC8000 (not calibrated) and looking the last component? (good soundcard, preamp). So I found EMU Tracker Pre could be handy. Do I need preamp for EMC8000 (EMU does have it build in)?

jzagaja · 17th May 2010, 07:35 PM

EMU tracker:
- Low channel separation.
- Every time you power on - the system has to be set to 48kHz or higher.

It has internal preamp. Below ECM8000 calibration made by myself.

buggsson · 8th July 2010, 11:46 AM

There has been some talk about soundcards usefullness or not. I have a MOTU UltraLight Mk. III with no technical data at all about the mic preamps. If I manage to locate some data, what in particular am I looking for, and any mini- or max values to look out for?

I am planning to use the Panasonic WM61 if I can find any, and build myself a calibrated mic (calibration file) and hopefully use it directly with my soundcard.

buggsson · 20th August 2010, 09:42 PM

I'm thinking of giving the DIY Panasonic mic capsule a try. However, I'm wondering about the complexity and difficulty for a complete newbie to take on such a project.

As I understand it, you need an output transformer for the capsule, and then a soundcard with phantom power?

If I give it a try, the modification feels like a must. I think I've seen two or three different versions of the mod.

Juergen Knoop · 20th August 2010, 10:13 PM

I build myself a cheap measurement mic for soundcards some time ago:
Monacor MCE-4000
regards

CeeVee · 20th August 2010, 10:20 PM

For those wishing to use the Panasonic WM-61A, here is a link for a Walin Preamp for it.

http://www.madaboutsound.com/prod_de...2&sa=cf&ctid=4

Plus a calibration file.

Mods to the WM-61A itself are at Linkwitz lab site.

buggsson · 23rd August 2010, 08:17 AM

Quote:

Originally Posted by CeeVee

For those wishing to use the Panasonic WM-61A, here is a link for a Walin Preamp for it.

Mad About Sound | Microphone Preamplifier PCB v1.1

Plus a calibration file.

Mods to the WM-61A itself are at Linkwitz lab site.

The kit is no longer available, only the PCB. Would it be considered as a good preamp? A ready made PCB is definitely a huge plus for me.

AdamThorne · 03:50 PM

I made the simple panasonic wm-61 based amp listed here -

<B>How to Build a Condensor Microphone... a Do it Yourself project.</B>

It works with my computers onboard sound without any other hardware. I put an on/off switch in it to take it easy on the battery, as I use it infrequently.

CeeVee · 23rd August 2010, 04:19 PM

Quote:

Originally Posted by buggsson

The kit is no longer available, only the PCB. Would it be considered as a good preamp? A ready made PCB is definitely a huge plus for me.

Here is the source of circuit, widely used !

Eric Wallin's Internet Homepage

the PCB is not expensive, have a go !!!

17th May 2010, 07:31 PM	#82
rinx diyAudio Member Join Date: Sep 2007	OK, great thread! While I do not understand english not yet very well, I have very trivial question. Just starting to build up my spekaer measurement system: using ARTA software (manual 180 pages HUH), I do have EMC8000 (not calibrated) and looking the last component? (good soundcard, preamp). So I found EMU Tracker Pre could be handy. Do I need preamp for EMC8000 (EMU does have it build in)?

23rd August 2010, 03:44 PM	#89
AdamThorne Rebel Samurai! diyAudio Member Join Date: Oct 2006 Location: Minneapolis, MN	I made the simple panasonic wm-61 based amp listed here - <B>How to Build a Condensor Microphone... a Do it Yourself project.</B> It works with my computers onboard sound without any other hardware. I put an on/off switch in it to take it easy on the battery, as I use it infrequently. Last edited by AdamThorne; 23rd August 2010 at 03:50 PM.

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8th July 2010, 11:46 AM	#84
buggsson diyAudio Member Join Date: Sep 2005	There has been some talk about soundcards usefullness or not. I have a MOTU UltraLight Mk. III with no technical data at all about the mic preamps. If I manage to locate some data, what in particular am I looking for, and any mini- or max values to look out for? I am planning to use the Panasonic WM61 if I can find any, and build myself a calibrated mic (calibration file) and hopefully use it directly with my soundcard.

20th August 2010, 09:42 PM	#85
buggsson diyAudio Member Join Date: Sep 2005	I'm thinking of giving the DIY Panasonic mic capsule a try. However, I'm wondering about the complexity and difficulty for a complete newbie to take on such a project. As I understand it, you need an output transformer for the capsule, and then a soundcard with phantom power? If I give it a try, the modification feels like a must. I think I've seen two or three different versions of the mod.

20th August 2010, 10:13 PM	#86
Juergen Knoop diyAudio Member Join Date: Jan 2007 Blog Entries: 3	I build myself a cheap measurement mic for soundcards some time ago: Monacor MCE-4000 regards

20th August 2010, 10:20 PM	#87
CeeVee diyAudio Member Join Date: Dec 2006	For those wishing to use the Panasonic WM-61A, here is a link for a Walin Preamp for it. http://www.madaboutsound.com/prod_de...2&sa=cf&ctid=4 Plus a calibration file. Mods to the WM-61A itself are at Linkwitz lab site.

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