Home Speaker Asylum

General speaker questions for audio and home theater.

Re: Allison Effect

Thanks for the info. Some of it makes sense to me.

The back-wave is the reason unenclosed planars do not delve very deep into the bass, as the back and front waves cancel each other out at low frequencies, but (big) planars can produce bass down to the 150 Hz to 200 Hz range, and this is where the majority of boundary induced suckouts occur.

Maybe I'm confused but Magnepan rates their larger models into 20's for bass response. I have heard various maggies, and measured with an RTA and there is definately bass below 150.

Are you saying bass is not possible below 150 with planars or are you saying it is just more susceptable to being cancelled by the back wave?


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  • Re: Allison Effect - NickR 17:16:58 01/06/02 (1)


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