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Mic Pre 500
DAKING Mic Pre 500

FET III Stereo Compressor
DAKING Mic Pre One

Mic Pre One
DAKING Mic Pre One

FET Compressor II
DAKING FET Compressor II

Mic Pre IV
DAKING Mic Pre IV

Mic Pre EQ
DAKING Mic Pre EQ

Sales Office

TransAudio Group
7320 Smoke Ranch Road
Suite G
Las Vegas, NV. 89128
702-365-5155
fax: 702-365-5145
sales@transaudiogroup.com

Engineering

Daking Audio Inc.
(302) 482-4898
geoff@daking.com

dave@daking.com

 

Archive for the ‘Mic Pre EQ’ Category

How to Test a Mic Pre for Noise

Saturday, April 17th, 2010

Question: How do I test the amount of noise added by a mic preamplifier?

Answer: First you need to terminate the input of the mic pre by connecting pins 2 and 3 together.  This can be done with a paperclip inserted into pins 2 and 3 on the microphone input.  If you have a microphone plugged into the mic input, then you are hearing the self-noise of the mic AND the noise of the preamp.  If you have it connected to nothing then you are hearing an un-terminated connection which is likely to include electro-magnetic and radio interference.

With pins 2 and 3 shorted, you can easily evaluate the noise added by the pre-amplifier either by ear or with your favorite meter.