Originally Posted by
danvprod
Thank you, grumpy for the information on the tapped inductor. Yes, not going to deal with all that. The l-pad will work. I did noticed that there is a 20 ohm resistor in parallel with the 2405 in some of the schematics -- is that just for impedance control?
@berga12 -- thank you for your continued support and ideas. For the 2405 1,5uF - 0,14mH - 1,8uF is where I will go here. I'l likely do the variable l-pad, just to dial in the attenuation.
I'll do the protection cap on the 2445 (16-20 uF) and the 12 dB LP as you've suggested -- 0,48mH and 1uF
Can you expand on this set of filters? "cut the driver at 1,2-1,5Khz, and you need something around 400hz (theoretically 2xHorn Fc, means 250hzx2= 500hz....)" What do these filters look like? I could do this in my MiniDSP, likely. I don't want to go down the route of a passive HP and filters, just because of the price as you've stated. If I have some ideas about the Q, dB and center frequency for the 1,2 - 1,5 cut, and what to do around 400 Hz, that would be helpful. I could try that tonight in the MiniDSP.
Regarding the l-pad between the 2405 and 2445, are you thinking that the 2445 needs to be padded down more than the 2405 or the other way around? Either way, I'll likely get the variable l-pad at 16 Ohm for the 2445 and 8 Ohm for the 2405.
Many thanks again, and I appreciate you answering all my questions.