its sounds as good as he was claiming guys and i have it on one channel of my home reciever at 60 rms total and it hits already not too bad for two 6.5s
i just tested the dual chamber abc box and best hit frequency in my apartment with both the tangbands getting 30 rms each it hit 104 db at 64 hz from almost three feet away and that was without distortion because i didnt want to risk anything with these speakers not being broke in yet
they dont sound too bad but in the box that guy built which is what i copied the spl range went like this as i used my spl meter in my apartment at a medium volume with invidivual test tones to 80 hz but they will play up to 100 hz I just didnt feel like charting them out that high
32 hz 77 db 33 hz 79 db 34 hz 80 db 35 hz 80 db 36 hz 82 db 37 hz 84 db 38 hz 86 db 39 hz 88 db 40 hz 90 db 41 hz 90 db 42 hz 88 db 43 hz 87 db 44 hz 86 db 45 hz 85 db 46 hz 84 db 47 hz 83 db 48 hz 81 db 49 hz 80 db 50 hz 78 db 51 hz 78 db 52 hz 81 db 53 hz 82 db 54 hz 83 db 55 hz 84 db 56 hz 86 db 57 hz 87 db 58 hz 88 db 59 hz 90 db 60 hz 91 db 61 hz 93 db 62 hz 95 db 63 hz 97 db 64 hz 98 db 65 hz 97 db 66 hz 96 db 67 hz 95 db 68 hz 94 db 69 hz 92 db 70 hz 91 db 71 hz 90 db 72 hz 89 db 73 hz 90 db 74 hz 91 db 75 hz 92 db 76 hz 91 db 77 hz 88 db 78 hz 85 db 79 hz 83 db 80 hz 82 db
Heres the impedance chart if you wanna compare my spl results with his readings in the same box...but I just realized I had my selective tone button on when i did these readings on the subs its basically a bass boost and tweeter boost so keep than in mind...the reciever is an onkyo 424
i just made another discovery guys. I listened to where i measured my subs at and then went about another three feet from the box and sat at my computer chair which was on a high plane then where i measured at about 3 ft. and guess what? The spl is 4 db louder on the same piece of music at my computer seat as it was at 3 ft away on my knees if im right 64 hz should now read out to 108 db. Im going to do other experiments to make sure its the distance and plane making the spl rise 4 db. By the way the box is on its side standing length wise.
I just remeasured things and i think another speaker playing was adding that 4 db extra so disreguard that 4 db gain but i did find out that cutting the distance in half does increase the db by 3 db as said in articles i have read
