OB 15"+8" fullrange(?)+supertweeter
Posted: Sun Sep 09, 2018 8:58 am
I am building an OB in form of U frame for bass driver, tapering to very shallow sides for fullrange and tweeter. I am not concerned with very high volumes so am considering following drivers in the shown ranges.
15" EVM-15L 40-240hz, Magnavox 8" 8WR 70s vintage paper cone 240-10khz, maybe 2" Harman Kardon from Apple computer 10-20+khz OR small horn supertweeters same range.
My questions:
1. I have noticed that several posters on this forum prefer to let bass drivers play fullrange with no crossover. I have listened to the EV 15" played by itself and it seems smooth until its natural rolloff from about 2khz--looks on published graphs like 6dB/oct acoustic rolloff. Has anyone tried crossing over this high to fullrange/midrange despite dire warnings from many other forums to avoid XO to midrange in the "speech" range 200-3khz?
2. I am debating minimal crossover component count versus complexity. With gradual rolloff slopes of all drivers and large overlaps of ranges, can I get away with first-order XOs probably with Lpads to match sensitivities of FR and tweeter?
Has anyone REALLY heard the bad effects of a XO in the 200-3kHz range, especially with shallow slopes and well-behaved drivers?
Any and all comments appreciated.
Ozziozzi
15" EVM-15L 40-240hz, Magnavox 8" 8WR 70s vintage paper cone 240-10khz, maybe 2" Harman Kardon from Apple computer 10-20+khz OR small horn supertweeters same range.
My questions:
1. I have noticed that several posters on this forum prefer to let bass drivers play fullrange with no crossover. I have listened to the EV 15" played by itself and it seems smooth until its natural rolloff from about 2khz--looks on published graphs like 6dB/oct acoustic rolloff. Has anyone tried crossing over this high to fullrange/midrange despite dire warnings from many other forums to avoid XO to midrange in the "speech" range 200-3khz?
2. I am debating minimal crossover component count versus complexity. With gradual rolloff slopes of all drivers and large overlaps of ranges, can I get away with first-order XOs probably with Lpads to match sensitivities of FR and tweeter?
Has anyone REALLY heard the bad effects of a XO in the 200-3kHz range, especially with shallow slopes and well-behaved drivers?
Any and all comments appreciated.
Ozziozzi