For those of you wishing to use the inexpensive Modutec VU meters from Mouser (http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=291437).
I have found replacement resistor values that make this work.
change R59 to 240ohms
change R58 to 82Kohms
This allows the gain reduction to be set properly.
for the +4dbU output level:
Insert the rectifier that came with the meter between points X&Y on the main and meter board. You will also need to remove R51 (replace it with a short). This gets the output reading almost exactly correct, mine runs about 0.25dB higher on the VU meter than it should. You might try playing with a valus for R51 to adjust this.
Good Luck and I hope this helps!
I have found replacement resistor values that make this work.
change R59 to 240ohms
change R58 to 82Kohms
This allows the gain reduction to be set properly.
for the +4dbU output level:
Insert the rectifier that came with the meter between points X&Y on the main and meter board. You will also need to remove R51 (replace it with a short). This gets the output reading almost exactly correct, mine runs about 0.25dB higher on the VU meter than it should. You might try playing with a valus for R51 to adjust this.
Good Luck and I hope this helps!
