SDA-1B Dimensional Driver ?

slenda

Hi, I own a pair of SDA-1Bs in wood tone with the MW6509 Drivers and I was just wondering which of the MW6509s are the surrounds ? I was thinking it is the two outside drivers making 2 surround drivers on each speaker. Please confirm, and Thanks !

pkquat

The inside drivers are the main "Stereo" speakers. The outer two are the "Dimensional" anti cross talk speakers. They only produce midrange frequencies if the interconnect cable is connected. They are out of phase, and about half the volume.

Some good reference links:

http://www.gimpod.com/sda-id.html
https://polksda.com/manuals.shtml

Schurkey

pkquat wrote: »

The outer two are the "Dimensional" anti cross talk speakers. They only produce midrange frequencies if the interconnect cable is connected.

Not entirely true. They also assist the bass (in-phase with the stereo drivers) via the SDA inductor, and they do this whether or not the cable is connected.

pkquat

@Schurkey Thanks. I knew that but forgot to include it. I also forgot to inlcude

Welcome to the forum @slenda.