DBX SFX-10

I saw this interesting set of speakers on Craigslist, but they sold quickly before I could investigate. They’re the DBX SFX-10s. There’s a very interesting article about their design in the May 1990 issue of The BAS Speaker, the publication of the Boston Audio Society which goes into quite a bit of detail, but the long and short of it is that they’re a pair of speakers designed to provide a fully omnidirectional sound field – and in the paper, there are polar plots to show they did a great job of it.

dbx-sfx-10-1

dbx-sfx-10-2

dbx-sfx-10-3

These are another uncommon design of an active-equalized speaker, similar to the Bose 901, EV Interface, and an early McIntosh line. Has anyone experienced these before? If you own a set, I’d be interested in studying the Soundfield Imaging Controller in my shop; I’d pay shipping to borrow it for a week or two and hook it up to my Audio Precision System One to see what it does.

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