Extended range measurement mics and pre-amps

percy · 17th November 2007, 01:07 AM

I am looking for suggestions for measurement microphones that could measure well into the 40-50Khz range, and pre-amps to go with.

Any diy projects out there for that purpose ?

TiA!

Thunau · 17th November 2007, 02:55 AM

A preamp that has 50k bandwidth is not that hard to find, good luck finding a microphone capsule to go with it though.
Basically your choices are a M50 from Earthworks, DPA (formerly B&K) 4004 or a Sanken CO100k- all of them cost between $1500.00 and $2000.00.
I own an Earthworks M30, which costs 1/3 of the others and don't miss the extra ultrasonics when working with loudspeakers and systems.
A Behringer is good to about 16k, then it starts rolling off. Most capsules you'll find for DIY will be comparable. Otherwise Behringer and other Chinese based manufacturers would be selling $100.00 measurement mics that go to 50k.
Why do you need a 50k mic?

17th November 2007, 01:07 AM	#1
percy diyAudio Member Join Date: Apr 2004 Location: MN	Extended range measurement mics and pre-amps I am looking for suggestions for measurement microphones that could measure well into the 40-50Khz range, and pre-amps to go with. Any diy projects out there for that purpose ? TiA!

17th November 2007, 02:55 AM	#2
Thunau diyAudio Member Join Date: Mar 2001 Location: PA USA	A preamp that has 50k bandwidth is not that hard to find, good luck finding a microphone capsule to go with it though. Basically your choices are a M50 from Earthworks, DPA (formerly B&K) 4004 or a Sanken CO100k- all of them cost between $1500.00 and $2000.00. I own an Earthworks M30, which costs 1/3 of the others and don't miss the extra ultrasonics when working with loudspeakers and systems. A Behringer is good to about 16k, then it starts rolling off. Most capsules you'll find for DIY will be comparable. Otherwise Behringer and other Chinese based manufacturers would be selling $100.00 measurement mics that go to 50k. Why do you need a 50k mic? __________________ Jan "Most people just say what they know, the wise ones know just what to say."

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