Originally Posted by dominguez1
I'm sorry derrickdj1, but 119db at 10hz is impossible for that size room and that sub. You must have done something incorrectly.
This is not a put down, but more of a matter of physics. Those subs are simply not capable of that output for that room. Mktheater had 4 18.2s in a 2000 cubic foot room and maxed out at around 120db @ 10hz. This is 4 times the number of drivers you have in less that 1/3 of a room that has 4 concrete boundaries.
Please prove me wrong by posting your graphs, room layout, and how you measured that.
I don't know about anyone else and what they can get in their room. But, I have ran the test tones several times and those are the numbers that I am getting. Count room gain of 12-15 db and both subs are corner loaded so another 6-9 db and the drivers face the wall to keep them loaded. Remember , I said the avr was at reference level . The output at 70 Hz was 123 db which is consistent with cea numbers for the VS 18.1 which would be around 128 db. The number I have been corrected for distance and the Radio Shack adjustment. The output of these sub can change due to which amp it is used with. That is one of the nice things about passive subs.
Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB
Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500