Mike,
A pot looking into a ****elded cable will produce a high-frequency rolloff,
the lowest
frequency being at the one-half resistance point of the pot. You'd want
that rolloff no
lower than about 30 KHz. Of those you've ordered, use the 50K pot.
Anything can drive an
impedance that high, but such a pot would have a high-frequency rolloff of
30 KHz if you
used 2.5 feet of that typical interconnect skinny ****elded cable whose
capacitance can run
around 90 pf per foot. With a more modest 30 pf/ft, you could get away
with 6.8 feet of
cable, and with low-capacity cable, say 12 pf/ft, you could have up to 17
feet of cable.
If the pot were one half that value, the allowable cable lengths would
double, etc.
--
Earl
"---MIKE---" <twinmountain@[EMAIL PROTECTED]
> wrote in message
news:8186-481CAB79-425@[EMAIL PROTECTED]
new digital FM tuner puts out too strong a signal compared to my
other inputs (TV and CD). I want to install a dual pot between the
tuner and preamp to reduce the volume. What is the best value pot to
use for this. I have ordered 50K, 100K, 250K and 500K from Mouser (the
pots are cheap - the ****pping is not).
---MIKE---
>>In the White Mountains of New Hamp****re
>> (44° 15' N - Elevation 1580')
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