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回复 公羊 的帖子
主人的描述:
A pair of JBL 123A drivers in mint condition caught my attention at eBay and I've always wanted a pair of these and so I had - for a reasonable amount of money. Not often you get two beautifully build, mint condition 12" bass drivers for 150 US$. I knew these bass drivers would have a relatively high Qt and probably would perform best in 80-100 litres closed cabs and they might be worth a try. My measurements on the 123A: Vas = 225 litres, Fs = 25 Hz, Re = 4.4, Qt = 0.49
This driver has a remarkable frequency response. From the wide baffle cabinet they perform +/- 1.5 dB from 200-6000 Hz! No serious break-up at all. No wonder this driver can run full-range in the JBL L100 Century monitor helped at the top by the LE5-2 midrange and LE25 tweeter. And the 123A drivers are sensitive, 90-91 dB/2.8V.
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