Someone sent me the brilliant of normalling the inputs. He connected
In 1 to the switched lug 2, and In 2 to switched lug 3 on his 490.
It is a less invasive mod than changing resistors on the board, and the use of
dummy plugs would provide the original function.
Normalling the inputs in the above way, then the input impedance for
one input would be 3K, and for two inputs it would be 10K on one
input and 5K for the other.
I'm thinking if I connect In 1 to the switched lugs 2 and 3, In 2 to
the switched lugs 1 and 3, and In 3 to switched lugs 1 and 2, then
the input impedance would be the same for any one or any combination
of two inputs.
Does anyone you see a problem with doing that, or have a better idea??
Thanks :)
On 3/4/08, Mark put forth:
>On 3/3/08, loopcycle put forth:
> >I'm still learning the 480, but it definitely changes character depending on
> >the input signal amplitude, just as the 440 does.
>
>That's true of most filters. It is certainly true of Moog ladder
>filters. Which is why I think it would have made much more sense if
>the 490 had only one input jack and an input level knob. The 490
>always seems to sound as though the input is not loud enough (and
>MOTM mixers like the 830 and 890 have little or no gain). So I'm
>always patching in some sort of amplifier before the inputs. Multing
>the same signal to more than one input also works. Which would be
>the same as putting the input resistors in parallel. While I could
>change some or all of the input resistors to 5K, I don't think
>lowering the input impedance of the module is such a good idea.
>Would it be better to increase R5 to a larger value, or would that
>cause other problems?? Any ideas??