ruffrecords
Well-known member
Just to clarify the position regarding the 2K4 resistor. My original REDD EQ was designed the be part of a tube mixer and would follow a 10K level control or fader. When fed from a low source impedance, the effective impedance of the 10K pot is a quarter of its value, so 2K5 (2K4 is the nearest preferred resistor value).. So if you feed the EQ from a 10K pot you do NOT need the 2K4 resistor because it already looks like 2K5. If you feed the EQ directly from a transformer or some other low impedance source, you DO need to add the 2K4.
Note also that the EQ expects to be fed into a high input impedance (470K or more) load. It also needs to be followed by some gain to make up the loss in the EQ. The easy way to do this is weith a FET input op amp. Details are in the REDDEQ folder on the DIY page of my website:
https://www.customtubeconsoles.com/diy
Cheers
Ian
Note also that the EQ expects to be fed into a high input impedance (470K or more) load. It also needs to be followed by some gain to make up the loss in the EQ. The easy way to do this is weith a FET input op amp. Details are in the REDDEQ folder on the DIY page of my website:
https://www.customtubeconsoles.com/diy
Cheers
Ian
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