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MINGSU wrote:

Most users use it for 200Hz down to 10 Hz above the horn cutoff frequency.

Ming, I do not think you are “getting” what I am trying to say.  OK, let to make bold statements: the people who use the 24Hz SG146LD4 driver from 200Hz to 10 Hz do not use it properly and get compromised results compares to what they might get from their horns, including you. The way how Mr. Goto suggest to use his fixed low-resonance driver with ANY LF horn and then “cure” the horn choking by introducing the “above the horn cutoff frequency” is fundamentally faulty. Frankly speaking it screws up the user of the driver as the are loosing 20-25% of this horn size, not to mention the quality of base notes. What you get home read careful what I said in this thread and in the linked threads. You might make some own experiments with own light prototype horn learning how change of the horn-driver resonance relation might very dramatically change sound of the bass reproduction. The $20K is quite a lot of money for the drivers and people should get a proper result for this money instead of a generic cookie-cutter solution.

Well, it is given that it goes along with my general attitude toward to “GOTO ways”. To demand from a company that does not believe it channels’ time aliment to discriminate the change of bass quality with driving the resonance frequency up it might be too much to ask. For a time being I will leave you with fact that your midbass horn produces 15-20Hz less then it should and it has was less sophisticated bass then it may have. To listen Mr. Goto recommendations about the horns placement in context of everything else is like to have harshly clipped power in mains and try to “cure” it with “better” power cord…

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