For the space behind I was going to use the old bookshelves as background noise while playing cards, but that's only 3-4 times per year so not a big deal. The receiver is set to be able to play an extra 2 channel zone
My sub was custom made for me. Here's the specs from the builder.
JL Audio's 13W1v2-4 driver and a 300W rms Bash plate amplifier. I did a ground plane measurement at 3 feet from the woofer cone. I was out in the open at minimum 25-30 feet from any large objects.
I used a RadioShack Analog SPL meter for testing with C weighting and slow response. I was just starting to get a touch of audible noise at 20hz, however it is just below the tuning frequency of 21hz. Most of the noise was due to the amplifier reaching a bit past it's limit I am sure.
20hz - 100db corrected actual 107.5db
22hz - 104db corrected actual 109db
25hz - 106db corrected actual 111db
30hz - 110db corrected actual 113db
35hz - 110.5db corrected actual approx. 113db
Last edited by 2packer; 07/06/09 02:32 AM.
