chrispsound
Well-known member
I built a MILA-1 with 6CG7's and need some help.
Link to modified schematic with voltages:
http://chrispsound.com/wp-content/uploads/2012/12/MILA1-6cg7.jpg
Pic:
I am having trouble understanding what is happening in the frequency response chart in RMAA. All RMAA tests were done with a M-Audio 2626 line out to a -40db pad with 150ohm shunting resistor then to the mic input on the preamp and gain was set for -6db at the output.
This is what I get with RMAA:
Is that big boost in the low end normal? Some of my other micpre's have a similar response but not with so much boost at 5 to 10Hz. There is also that little boost in the high which actually might continue to rise but the free RMAA doesn't go higher than 20kHz. I haven't done any listening tests yet and I am not sure if I am even there yet by the looks of the response chart.
Thanks and Happy Holidays, ChrisP
Link to modified schematic with voltages:
http://chrispsound.com/wp-content/uploads/2012/12/MILA1-6cg7.jpg
Pic:
I am having trouble understanding what is happening in the frequency response chart in RMAA. All RMAA tests were done with a M-Audio 2626 line out to a -40db pad with 150ohm shunting resistor then to the mic input on the preamp and gain was set for -6db at the output.
This is what I get with RMAA:
Is that big boost in the low end normal? Some of my other micpre's have a similar response but not with so much boost at 5 to 10Hz. There is also that little boost in the high which actually might continue to rise but the free RMAA doesn't go higher than 20kHz. I haven't done any listening tests yet and I am not sure if I am even there yet by the looks of the response chart.
Thanks and Happy Holidays, ChrisP