I finally purchased a BFD DB4 is the latest set of measurements from my sub when equalized with a Behringer Feedback Destroyer DSP1124P. I am now a true believer. The only problem I really have is that to tame the peak at 45 hertz (its still really hot at that frequency) had to apply an 18 db cut at 45 hertz. I did this using a 1/6 octave bandwidth. Not only was the 45 hertz fully affected, neither were the frequencies around 45 hertz.
My measurements are plus or minus 1.5 db from 19 hertz to 63 hertz. Plus or minus 3 db from 18 hertz to 71 hertz. The reason the measurement drops above around 70 hertz is that my sub is at a higher level than my mains and the crossover is bringing the level down.
Fr DB1 DB3 DB4
16 92.5 85.5 85.5
18 90 88 88
20 89.5 92.5 93.5
22 87.5 92.5 93.5
25 88 93 93
28 87 90 91
32 91 92 93
36 84.5 88.5 90.5
40 90.5 91.5 91.5
45 100 94 94
50 101.5 90.5 93.5
56 97.5 89.5 92.5
63 95.5 93.5 91.5
71 85.5 73.5 88
80 83.5 81.5 86.5
89 81.5 90.5 89.5
100 81 84 85
The sub can hit 110 db peaks on the pod race (the explosion in the tunnel) on the Star Wars Episode I The Phantom Menace with no audible distortion (that I can hear). The part I really like about the eq is that during the pod race I can now hear individual pulses when the racers come by instead of a bloated amorphous drone.
My sub is a DIY using a Dayton 12" DVC in a 3ft3 box with a 15" Adire Audio PR using about 500 grams of mass.
For music the sub is almost too clean. I really can't tell its there. I guess this is how it should be when your bass is well integrated. I am thinking about applying a "house curve" to my eq to get a little excitement back.
My measurements are plus or minus 1.5 db from 19 hertz to 63 hertz. Plus or minus 3 db from 18 hertz to 71 hertz. The reason the measurement drops above around 70 hertz is that my sub is at a higher level than my mains and the crossover is bringing the level down.
Fr DB1 DB3 DB4
16 92.5 85.5 85.5
18 90 88 88
20 89.5 92.5 93.5
22 87.5 92.5 93.5
25 88 93 93
28 87 90 91
32 91 92 93
36 84.5 88.5 90.5
40 90.5 91.5 91.5
45 100 94 94
50 101.5 90.5 93.5
56 97.5 89.5 92.5
63 95.5 93.5 91.5
71 85.5 73.5 88
80 83.5 81.5 86.5
89 81.5 90.5 89.5
100 81 84 85
The sub can hit 110 db peaks on the pod race (the explosion in the tunnel) on the Star Wars Episode I The Phantom Menace with no audible distortion (that I can hear). The part I really like about the eq is that during the pod race I can now hear individual pulses when the racers come by instead of a bloated amorphous drone.
My sub is a DIY using a Dayton 12" DVC in a 3ft3 box with a 15" Adire Audio PR using about 500 grams of mass.
For music the sub is almost too clean. I really can't tell its there. I guess this is how it should be when your bass is well integrated. I am thinking about applying a "house curve" to my eq to get a little excitement back.
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