Build log for this sub begins HERE.
With a 3.67 year old, the only time my house is reliably quite is at night. Last night was my third is the last week of evening spent making pink noise and sine wave sweeps. My wife is sweet to tolerate it.
The first few times I will write off as experience. I had some troubles with my UCA-202 producing phantom signals sub 20 hz, so I’m using my M-Audio firewire solo, a Dayton EMM-6 (calibrated by CSL), and a Radio Shack SPL meter. The purpose of the measurements are to help create EQ filters for use with a balanced Mini-DSP 2×4.
NOTES: Unless indicated on the image, the graphs have no smoothing. All measurements were taken with a 60 hz crossover between the sub and main speakers, controlled by the receiver.
So, nice and flat, right? I have some concerns about the boost in the sub 25hz area. There is a 10 db rise from 25 to 5hz. I don’t know if a little boost can create even more room gain – so I’m unequipped to reverse engineer this, but nonetheless, I am inclined to undo it for now.