Roland Constant current source question

[jupiter4]

[jupiter4]  Hi All,

On the motherboard on my Jupiter4 there is a constant current source
feeding 4 voice modules in parallel. This constant current feeds into a
BA622 to control the Q in the filter. The current is derived from the
D/A conversion of the Q slider (0-5v), its just 6.8K resistor going to a
a standard Roland tranny. It outputs 400uA and each voice draws 100uA
each.

I am building a module from the voice board and need to clone this
res/tranny part, but each board only requires 100uA, not 400uA. I have
ran the voice board using the 400uA constant current source of the
motherboard, with the other 3 voice cards unplugged and seemed to
function OK (The board is not properly calibrated at the moment tho...).
The question is, will I damage the BA622 with the 400uA? Should I build
a constant current source of 100uA. I wouldn't know how to do this,
would it be a case of uping the 6.8K resitor value by a factor of 4?
Another alternative is to replace the current controlled Q by hand
wiring the feedback with a pot, similar to the way its done on 100M and
other roland BA622 filters.

Any help appreciated.

Cheers, Dave...