a sub crossover idea

[mashaffer]

final slope 24dB 1st order boost in the pass band to counter driver roll off.

I wonder how much of the phase and slope change above 1.2kHz is real and how much it matters given we are down well over 100dB at that point. Green trace is input Red trace is output.

 

[mashaffer]

New and improved? A bit more gain direct coupling and slight adjustment of first stage f3.

Green=Input
Red=1st Stage Output
Blue=Output

 

[JonSnell Electronic]

Where is your Grid bias on the first stage?

 

[mashaffer]

Missed it on those drawings (posted wrong ones). When I get back on the laptop I will post the right one which has the grid resistor. [Insert embarassed grin].