In Reply to: Re: Lowther - Bass Reflex ?? posted by Gordon Rankin on July 3, 2000 at 12:28:13:
True. There is a way though to use vented boxes tuned to <40Hz, for folks who listen at moderate levels. By adding series resistance, Qe can be raised to allow bass extension (in larger boxes) at the expense of efficiency.A DX3 with a Qts raised to ~0.6 yields a maximally flat alignment in a ~6.62cuft net box tuned to ~38Hz, F3 = ~35Hz, F12 = ~30Hz. Efficiency drops to ~93.6dB/W/m.
In theory, the tonal balance would better than a backloaded horn, but with the minimal Xmax, dynamic range would be limited to ~100dB.
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- Re: Lowther - Bass Reflex ?? - GM 07/3/0016:16:48 07/3/00 (0)