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Chill-Baffle speaker (L-baffle design)
Chill-Baffle speaker (L-baffle design)
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Old 7th February 2018, 09:41 PM   #11
scottjoplin is offline scottjoplin  Wales
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Hi. Was the main idea not to have the cavity resonance of a U-frame? Did you try damping the rear of the speaker?
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Old 8th February 2018, 04:54 PM   #12
fedde is offline fedde  Netherlands
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Yes indeed. The idea was to limit reflections and resonances while enlarging the effective baffle dimensions and making it assymetric with a symetric appearance. I did not try to damp the rear part of the speaker yet, I did not order material for that yet. But I think I do not really significantly perceive signifant reflections from the wall or backside (though I can only conclude finally after trying it out...)
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Old 8th February 2018, 06:59 PM   #13
scottjoplin is offline scottjoplin  Wales
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If you are after dipole radiation, the rear shouldn't be damped. Also diffused reflections from the front wall will add to the spaciousness and 3D imagery if it's at least 3 feet away.
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Old 8th February 2018, 07:27 PM   #14
fedde is offline fedde  Netherlands
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Yes. it could be that the baffle backside reflections add some spaciousness to the sound. Although stereo placement can be quite pinpoint with the right recordings.

Anyhow, next week I plan to start work on the 2nd incarnation of the Chill baffle speaker. I ordered a nice pair of 15" Pure audio project NEO woofers.
15″ Audiophile Grade Open Baffle Woofers – PureAudioProject

These woofers are quite fast and efficient, so I expect this to be a good match with the Suprovox wide banders. I plan to passively filter the woofer (2nd order LPF around 200 Hz) and add the Supravox widebander unfiltered. If this does not work I can still decide to filter the bottom frequencies of the Supravox, but I would rather not add a capacitor to this driver. Furthermore, I will add equalisation on PC side to make the overall response more flat. Woofer assisted wideband, sounds like a good idea... ;-)

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