not seen it yet - maybe you can model it from this picture
http://www.bitcore.org/stuff/Bass/Cerwin_Vega/schematic.png
http://www.bitcore.org/stuff/Bass/Cerwin_Vega/schematic.png
Yep, I came across that diagram during another search.
This is what I came up with, based on that diagram. This is the EL36 cabinet with the B&C 18TBX100 18" driver.
Once he has the drivers in, I'll run an impedance test on them to see how close the model matches the real thing. One thing I'm not sure about is if the chamber is stuffed or not - my model has it unstuffed.
If the model is right - 135dB with about 200W each into 1/4 PI loading (basically two of them along a wall) - oof. And with some DSP to address excursion below 50 Hz or so, that can be raised to 145dB with about 1kW each.
Not too shabby.
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The impedance response of that design shows ripples from 60Hz up which are usually associated with noticeable panel flex that could possibly have an audible effect on the response. Even the lowest peak looks a lot lower than I'd expect. This is probably not a design I'd choose to build, at least in the format indicated. Maybe a few cross-braces along the path and trifurcating the horn, at least for the first half of the path....
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