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回复 lakerblue
L版請問用6.5寸做中音有甚麼優勢?原5寸專職中音指向性方面不是更好嗎?
trust1ym 发表于 2011-10-15 18:25 
嗯,这个箱子是TG的设计,他针对这个问题有过解释:
So, even 3-4" drivers can cope with a 300 Hz point of crossover and we do see middomes taken this low. Does it sound natural? I case you have an electronic crossover, preferably 24 dB/octave, try make a 320-1280 Hz midband and play voices on a 4", a 5" and a 6" driver. Add a coil to the drivers in order to make the response reasonably linear. All drivers on suitable baffles. Try adjust to the same loudness from the drivers and listen to voices. Quite some difference. Remarkably different. I've always found 6" drivers to give the best lower midrange. It adds a low-end weight to vocals that smaller drivers cannot do. However, depending on the woofer below and the chosen slope of the crossover you can make a perfect blend of sounds. If you can get away with a 2nd order filter the results may be very good indeed. With higher order filters you start depending very much on the actual performance of the driver itself and there's no "help from your friends" here. I've heard excellent vocal performance from a 6" midrange driver taken down to 150 Hz with - presumably - 4th order filters (Von Schweikert VR4 mkIII). |
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