With some renewed interest in my old project, I realized that I had never posted the passive high pass shelving network circuit for the 2446H/2382a combination. Just as a reminder this system uses an active crossover network and separate amplifier channels for each driver. The active crossover network is set to feed a 1,200Hz to 8,000Hz signal range to the 2446H driver. And a 2405 driver handles all frequencies about 8KHz. After running some tests with Clio, I did find that the 2446H/2382a combination does have a slight roll off issue that starts at about 4,500 Hz and builds to about a 5 db drop at 8 KHz. In the circuit pictured below the array of 82uF caps provide for driver protection. And the 5 and 20 ohm resistors form an L-PAD, which at lower frequencies attenuates the signal by about 5.5 db. The 30uf caps bypass the 5 ohm resistor at higher frequencies and this reduces the attenuation of the L-PAD to less than 1 db at 8 KHz. In practice, this simple shelving network does a pretty good job of flatten the 2446H/2382a combination out to 8 KHz.
I like the retro style of your cabinets. Nice job!
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