A few questions

[ebag4]

Thanks PJ, I should have told the complete story to begin with, my apologies.  The speakers that will be powered by the Kaiju are 94dB efficient.  The bottom half of the speaker is comprised of a pair of 12" servo subs per channel, each with its own plate amp, in OB "H" alignment, they are designed to play to 200Hz. 

I play a little of everything but classical, including a little rap when my son comes home from school.   Primarily classic rock and blues.

Based on your comments above, it sounds like you recommend adjusting the value of the coupling cap in my situation, what value capacitor would I use with that configuration for a -3dB of 70Hz?

Thanks again,
Ed

[Paul Joppa]

I get 0.00913uF. It's not very critical because the slope is very low (6dB/octave) so I think you would be fine with 0.0082 or 0.01uF. 600v or higher rating.

But if you want to be precise, change the 249K resistor Rg to 226K and use 0.010uF, preferably 2% or better.

[ebag4]

I get 0.00913uF. It's not very critical because the slope is very low (6dB/octave) so I think you would be fine with 0.0082 or 0.01uF. 600v or higher rating.

But if you want to be precise, change the 249K resistor Rg to 226K and use 0.010uF, preferably 2% or better.

Excellent, thanks Paul.

Best,
Ed