Fe207E and FT17H crossover (Singular)

by MikeH @, Wednesday, August 01, 2007, 09:09 (6085 days ago)

I'm finally happy with my tweeter filter. For those running this driver with a phase plug this will be a good starting point for you.
Series resistor of 4x cheap wire wound 5W 33 ohm in parallel for 8.25 ohms.
0.570 uF series capacitance which is one 630V 0.47uF Wima MKS 4 in parallel with a mystery yellow axial 0.1uF 1000V 0.1uF

so 8 and a bit ohms 0.570uF and a FT17H in series, tweeter is out of phase.

I am using a borrowed modified Mr Liang 35Wx2 push pull amp with EL34 output tubes. Drives them nicely with enough power to exceed Xmax.

Now to see how they sound on my H.K. high damping factor SS amp, probably terrible.

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