Re: Is this a good way to test pre-amp hiss of a digital recorder?
- From: "Mike Rivers" <mrivers@xxxxxxxxxxx>
- Date: 5 Jun 2006 04:04:47 -0700
Pooh Bear wrote:
The difference between 200 ohms and 600 ohms is the square root of their ratios i.e.
sqrt 3 = 1.73 or 4.8dB. Between 150 ohms and 600 sqrt 4 = 2 or 6dB.
I asked for mreasurements, not theory. If I measure the noise of a
preamp with a 150 ohm resistor and a 600 ohm resistor at the input, can
I expect the noise to change by 6 dB? I can certainly measure that, and
I will report back.
.
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