Re: Danley SM80 and others shootout Monday January 14 at Danley in Gainesville, GA.
Brandon,
1, 2. Wiring mistakes happen, glad you made us aware of them.
The chart below shows the response of a 2 x12" sub, the white trace wired correctly, the green trace some 14 to 17 dB lower is the same signal applied with one speaker driven, the other shorted (not connected to the amp) and the purple with one speaker driven and the other just disconnected.
Obviously, far more than just a 6 dB difference that one might expect offhand from an open driver.
3. The TH 118 and the SB 1000 should be close to the same 4 ohm nominal impedance and bandwidth, so swapping the (correctly wired) cable should be a reasonable real world sensitivity comparison.
4. Ideally, you would move the unused sub out of the test area, as the increased frontal area and cabinet cavities will still have an effect on the test even with the unused cabinet shorted out. Testing outdoors, well away from boundaries would of course also be preferable.
Tapped horns seem to have more forward directivity than bass reflex cabinets of the same frontal area, doing a 90 degree test to the side and one to the rear would also be informative, and may be part of why you prefer the sound quality over the SB 1000.
I'll be looking forward to the comparison!
Art
