Frazier's CAT40 (1986 -?) is a very good and coherent speaker - am wondering if a more rugged version using a 10" woofer would be practical with common drivers (?) what did they use for a crossover?
http://www.frazierspeakers.com/download/c40.pdf
http://www.frazierspeakers.com/download/coax.pdf
http://www.frazierspeakers.com/download/c40.pdf
http://www.frazierspeakers.com/download/coax.pdf
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Use 10" with low Qts, high Fs and high efficiency. Enclosure must be bigger than CAT 40 (bigger horn). I don't know about the original CAT 40 crossover, but it should be with the second order low-pass and the second or third order high-pass filter.
Designing this type of loudspeaker is not a trivial thing! See the examples with 12":
http://www.dynacord.com/downloads/f9cwh_datenblatt.pdf
http://www.dynacord.com/downloads/EDS-FX12.pdf
Designing this type of loudspeaker is not a trivial thing! See the examples with 12":
http://www.dynacord.com/downloads/f9cwh_datenblatt.pdf
http://www.dynacord.com/downloads/EDS-FX12.pdf
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thank you very much for the input and links - for 10" I have 10G200 which might work - -do you think a mock-up from laminated cardboard or foamcore would suffice to see if things can work?
Beyma 10G200 is a good choice.
All-foamcore horn is fine for small 3" or 4" drivers, but internal pressure in the 10" horn back cavity is very high, so foamcore and laminated cardboard maybe can be used only for the conical expansion parts of the horn. I would go for a multi layer plywood, as the horn is not that big.
All-foamcore horn is fine for small 3" or 4" drivers, but internal pressure in the 10" horn back cavity is very high, so foamcore and laminated cardboard maybe can be used only for the conical expansion parts of the horn. I would go for a multi layer plywood, as the horn is not that big.
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