"Dave Plowman (News)" wrote:

Eeyore wrote:

The cancellation of low frequencies as a result of their physical
construction. Unless you know of an IB electrostatic.

Do you have true infinite baffle moving coil speakers? I doubt it.

My EV Sentry IVs are not only horn loaded but have 100% isolation of the
rear radaition.


Of course they will cancel at a certain frequency and below. That's why
they are so large. But the cutoff frequency is lower than perhaps most
conventional designs - if you set a realistic attenuation as a cutoff.

IBs don't *have* to be huge to avoid the cancellation issue. Acoustic
labyrinth designs like PMCs effectively avoid the problem entirely.

Graham