Has anyone tried to build QRD Diffuse? If so did you copy a design, did you buy a instructional book, What materials did you use, what tools required?
Thanks in advance
Sub placement considerations should provide the smoothest sound in your listening position. I don’t have ownership experience with subs for my 2 ch audio room. I do know corner loading a sub can really excite a room. I don’t think there is any rule that says corner loading a sub is incorrect...
I understand the ” rule of thirds” considers the way bass propagates within small room acoustic. This would put speaker baffles at six foot from front wall and listening seat at twelve feet from front wall in an room with 18 ft length dimension. With that said maybe it’s something you could try...
I may be wrong but 250hz may be an area that is impossible to diffuse with any consumer available products. I would suggest if your measurement/listening position is sitting in this null try moving seating position as well as speaker position for a more linear sound.
Before spending any money/efforts with room treatment I would at least try sub placement inside main speaker. I would also try moving speakers even further from front wall. Listening position adjustments, as well, to get you out of a “room excited” position if called for. Some of the best two...
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