Linkwitz/Panasonic measurment mics

[bkahuna]

Here's another possible solution:
http://http://www.parts-express.com/pe/showdetl.cfm?Partnumber=390-801

There's a guy at Home Theater Shack.com that buys these and the Behringer mics, runs them on his calibration rig, and resells them with a calibration file for cheap. His website is http://www.cross-spectrum.com/

The thread pertaining to this at hometheatershack.com is here: Cross-Spectrum Microphone Calibration Service - USA - Home Theater Forum and Systems - HomeTheaterShack.com

[888guitars]

Whooa! Alot to take in! But fun and interesting. I am basically using this to "ring out" Sound systems in rooms.

I really just wanted the satisfaction of building a useful mic, similar to the DBX I bought. I have yet to accomplish this. I am the guy who has to make his own

[J M Fahey]

Now we are getting to the point.
For your room measurement project, the Linkwitz is "too deaf".
It's designed to be used 1 meter in front of a speaker voice coil, and down to practical physical contact with the cone of dome, for close field measurements.
(a couple millimeters)
I'd use the regular unmodded Behringer, or, worst case, build my own ... although I remind you the posted circuit has errors.
By the way, the original unmodded Behringer *can* be phantom powered.

[888guitars]

Thanks for pointing out that I have been wasting way too much time barking up the wrong tree.

[J M Fahey]

Do you have the DBX schematic?

[888guitars]

No I don't.

[bkahuna]

I really just wanted the satisfaction of building a useful mic, similar to the DBX I bought. I have yet to accomplish this. I am the guy who has to make his own

If you make and use a mic for recording, that's fine, you just want it to "sound good". If you make a mic for EQing a PA, unless you have the proper calibration equipment, it will mislead you rather than inform you. The response of the PA will mirror the response of the mic. Unless you know the response of the mic, you might as well be EQing by ear.

[warunasanjaya55]

Why do not 888guitars try ebay. There are lot of things to sell.