Hi there
I have just aqquired 4 units for a speaker project - two Vifa xt25, and two Seas units, that seems to be a special OEM prototype, labeled: CC17RC/P - H868 - its a 170mm coated paper with faseplug - thats all I know, so im thinking of using it in a closed cabinet, that way I cant screw it totally up 😉 - should I try to settle for a Bass reflex instead, finding a ressonance freq and calculate a port from this freq and the box size ?
Regarding the filter, I have read that the XT25 needs to be cut off rather steepley, so Im thinking of using an 18db cutoff @ 3KhZ, and an 12dB upwards for the woofer. If I compare the woofer with other seas papercones of the same diameter with phaseplug the roll of @ about 4kHz, så 3KhZ should not be a problem ??
Both filters are butterworth BTW....
Wadda ya think - any comments ??
Cheers !
/Buhl
I have just aqquired 4 units for a speaker project - two Vifa xt25, and two Seas units, that seems to be a special OEM prototype, labeled: CC17RC/P - H868 - its a 170mm coated paper with faseplug - thats all I know, so im thinking of using it in a closed cabinet, that way I cant screw it totally up 😉 - should I try to settle for a Bass reflex instead, finding a ressonance freq and calculate a port from this freq and the box size ?
Regarding the filter, I have read that the XT25 needs to be cut off rather steepley, so Im thinking of using an 18db cutoff @ 3KhZ, and an 12dB upwards for the woofer. If I compare the woofer with other seas papercones of the same diameter with phaseplug the roll of @ about 4kHz, så 3KhZ should not be a problem ??
Both filters are butterworth BTW....
Wadda ya think - any comments ??
Cheers !
/Buhl