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Ejam 10th February 2013 10:41 PM

Burning Amp 2012 Pass Speaker

Can you give us the dimensions of your open baffle speaker presented at BAF 2012. For example, size of the baffle, height of the top driver above ground, dimensions of the slot chamber, and any other critical dimensions for the sound. You mentioned crossing over at 150Hz, is this right? Much appreciated if you can.

Nelson Pass 10th February 2013 11:54 PM

As I recall it is 24 x 48, with the Lowther at 30" height. The opening for
the 15 inch Definimax was about 16 x 3.5

The drivers are wired in phase, with a 2 pole low pass on the bottom at 80 Hz
and a 2 pole high pass on the Lowther at 160 Hz. There is also a high Q
Chebyshev hi pass on the woofer at 20 Hz.


Ejam 11th February 2013 03:38 AM

Slot Chamber Depth?
Thanks for the prompt reply. Just a point of clarification: You gave the height and width of the slot chamber but does its depth matter and if so can you remember it?

Nelson Pass 11th February 2013 01:59 PM

The depth is the diameter of the woofer.


Zen Mod 11th February 2013 02:01 PM

early coffee at SR ?

Ejam 11th February 2013 11:23 PM

I suspect Nelson is not the type of guy who keeps keeps regular hours in the SR workshop. PS. Nelson, thanks for the info.


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