Hi, Wayne! Your crossover papers have been really informative. I'd like to use 6db slopes in my crossover design, but I also want high-freq compensation for the HF compression driver -- if I want 35 ohms additional resistance for the horn driver (on a JBL 2380 clone), do I simply parallel this with a .47uf cap and then calculate the crossover cap size based on the total resistance (8 ohms for the driver + 35 ohms?). Do I need to use a tradional L-pad for the best response? Thanks!
Wayne Parham Messages: 18722 Registered: January 2001
Illuminati (33rd Degree)
I would not recommend a variable L-Pad, but would recommend a series/parallel attenuator using fixed value resistors. Put an HF augmentation capacitor across the series resistor.
The network I use in my speakers will work for you, using values R1=16 ohms, R2=30 ohms and C1=0.47uF. It is a little different configuration than usual, with the shunt resistor in front of the series resistor, because it was designed to provide a specific amount of damping for my crossover. But it will work for you very nicely. Load impedance is about 12 ohms, so keep that in mind when choosing your crossover cap.
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