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1st November 2007, 08:48 PM
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#1 |
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diyAudio Member
Join Date: Jun 2005
Location: West London
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Swapping out the microphone in an SPL meter?
I managed to break my microphone preamp and I've lost the microphone... So... I bought a SPL meter with an output socket but the manual says the measurements aren't very accurate below 32Hz or about 10kHz (it was cheap BTW) so I was thinking about swapping the microphone for one of the Panasonic WM-61A microphones as I guess the mic is the problem.
The operating voltage is OK but is this likely to work? I don't care if the SPL meter on the unit is accurate as the output is calibrated on my laptop, I would just like to be able to measure from 20 to 20K fairly accurately. |
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4th November 2007, 05:35 PM
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#2 | |
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diyAudio Member
Join Date: Jan 2006
Location: Avalon Island
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Re: Swapping out the microphone in an SPL meter?
Quote:
It should work OK.
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Just because you can't hear it doesn't mean no one can. |
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4th November 2007, 10:18 PM
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#3 | |
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diyAudio Member
Join Date: Jun 2002
Location: USA, MN
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Re: Swapping out the microphone in an SPL meter?
Quote:
My stock Radio Shack SPL meter is not accurate above ~2kHz there is a big peak (5-6dB) at ~5-6kHz and it is down 15-20 dB at 20kHz. The output was rather noisy, as well.
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Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan Science is a way of thinking much more than it is a body of knowledge. --Carl Sagan |
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5th November 2007, 02:44 AM
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#4 |
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diyAudio Member
Join Date: Feb 2004
Location: Kalifornia
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Eric Wallin's site with RS SPL meter mods:
http://mysite.verizon.net/tammie_eric/audio/audio.html Scott
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5th November 2007, 06:17 PM
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#5 |
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diyAudio Member
Join Date: Jun 2005
Location: West London
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OK, thanks all
 It sounds like it could be potentially complicated because I don't have a Radioshack SPL meter so nothing to work from as such. I'll do some comparative tests before and after fitting the panasonic mic capsule - I have data from my previous setup with the decent mic and preamp I can use. |
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