I installed R68 when I assembled the MOTM-410 and I've had no problem using
the -410 with either of my polysynths (Prophet 600, CZ-101), which I doubt
are anywhere near 10V outputs, even with the volume cranked. So for a
third opinion, I'd recommend installing the resistor when you build the kit
and not worry about it. I haven't tried running a low-level (guitar,
microphone, transducer pickup) signal through the -410 yet (so if you're
planning on ∗that∗, you might want to ignore what I just said), but my
Morley wah (old chrome "Power Wah Boost") has a built-in preamp (the
"Boost") that ought to do the trick when the time comes. I'd recommend
picking up the MOTM oscillator soon anyway, as the 300->120->410
combination sounds ∗huge∗.
Also, potential 300/320 builders should know that the latest Radio Shack
circular lists their heat sink grease as on sale for $1.99 a tube (and
after having already built two, it looks like I'd have to build a wall of
oscillators to use up a single tube of the stuff).
-Doug
ceres@...At 05:49 PM 01/05/2000 -0800, "Brousseau, Paul E (Paul)"
<
PaulBr@...> wrote:
>Is the resistor simply to be used on 10V peak-to-peak signals? And if so,
>will the planned pre-amp module bring signals up to that strength, requiring
>the resistor at all times? Or is there something else about the MOTM
>oscillator (I can't imagine what exactly, amperage?) that makes it
>necessary?