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RE: Why not coax?

Posted by Robert Bastani (M) on October 24, 2009 at 23:05:25

In Reply to: Why not coax? posted by Rocket 88 on October 23, 2009 at 09:58:04:

Hi Rocket,

the Rythmik woofer- amps are very good, you can use them for all Bastanis woofers.

Imaging and musical content is affected by the quality of the speakers from about 150Hz-200Hz up to about 7Khz-8Khz, so using a single driver in this frequency band offers many advantages.
The Bastanis wideband drivers work withinin this frequency- spectrum on the open baffle without any crossover, also they offer extremely high efficiency and huge dynamics. The tweeters can be placed away from the widebands without any restrictions because of the real wideband behaviuor of the 12" drivers.

- There are no issues from interferences like shown by common multiway speakers with a lower crossover- point.

- There is no need to place a compromised horn- contour inside the voicecoil of the widebands. Coaxial designs with a lower crossover- point than 7Khz have a better imaging than common multiway speakers (crossover lower than 7Khz, tweeter beside the midrange) but they show a number of other issues. The horn inside the voicecoil of the midrange always is a compromise, the horn physically disturbes the bigger cone at higher frequencies and the main- issue are interferences between the big cone and the centered tweeter, a coax shows the worst behaviour of all methods to place a tweeter.

- The small horn which is used for the Bastanis o.b.- design works without the typical resonances of bigger horns.

Regards
Robert Bastani

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