Getting started with a Behringer Feedback Destroyer PRO DSP1100P

[kryptonitewhite 1]

This thing is so powerful it's hard to get started, especially since I want out of the ordinary responce, not flat. Since it has 1/120th control I don't know where to start with Q... 60/120? Thats the default IIRC. I basically need to lower everything boosting nothing as I need to create a LP effect. I want 5Hz-10Hz to be 6dB above 11Hz-18Hz. I want 11Hz-18Hz to be 6dB above 19Hz-30Hz. I want 19Hz-30Hz to be 6dB above 31Hz-250Hz.

This is all guesstimation, obviousely not a 6dB drop between 1Hz increments... just to give an idea of what I am after. I may simply center at 45Hz and EQ down 24dB and vary my Q until I am happy, unless I get some good feedback.

Thank you for trudging through this post, trying to understand it, and if you even reply with help... thank you very very much.

KW

[kryptonitewhite 1]

Filter 1: 40Hz -48dB Q 60

Filter 2: 20Hz +16dB Q 120

Filter 3: 20Hz +16dB Q 120

Filter 4: 20Hz +16dB Q 120

Filter 5: 20Hz -16dB Q 60

Filter 6: 20Hz +16dB Q 120

Filter 7: 20Hz -16dB Q 60

Filter 8: 20Hz +16dB Q 120

Filter 9: 20Hz -16dB Q 60

Filter 10: 20Hz -16dB Q 60

Filter 11: 40Hz -48dB Q 60

1st problem: as I was adding the last 2 filters I noticed rumbling got loud when I added dB, then i realized 1 side was doing it but not the other, before I saved it, though both engine lights are on. When I did the following cut it fixed it...but that doesnt mean they became symetric again. So I did sine waves at 6.5Hz, 10Hz, and 16Hz to make sure both sets of subs have the same excursion. They do. However, at 6.5Hz when I get it loud enough to get amplifier noise, it was on the same side that suffered rumbling.

Anyway....

the 2nd -48dB cut at 40Hz killed it:

but then the last filter, 12, boost 16dB at 20Hz Q of 120 fixed it and I am happy for now.

Final sweep

[kryptonitewhite 1]

I started to remove several filters as there was too much 5Hz-10Hz and everything else was dead, as I removed the 2nd 40Hz the buzz came back, and only on 1 side. Something is wrong so I took the BFD back out. Ran Audyssey for the 1st time, IDK who's system this is...but its totally different...instantly.

Here's sweeps starting at -35dB in 5dB increments to -20dB and I still have a TON of headroom.

[kryptonitewhite 1]

Audyssey set all speakers to negative something, the sub was -12dB. I swept it again with -9dB then -6dB and still have headroom, but not much, so i will leave them at -6dB

[kryptonitewhite 1]

How does REW know how far down it can EQ? How can I get that spike at 5Hz, or at least make it flat to 5Hz?

[kryptonitewhite 1]

just ran another sweep with the entry way door sealed up. So much for retuning higer, work on more bracing and more sealing up and I should be golden to 5Hz.

[kryptonitewhite 1]

Little vid i made of REW and a couple sweeps, a lot of people that subscribe to my vids have no idea what REW is, where I get my numbers or graphs.

110dB from 5Hz up REW Room Eq Wizard.AVI

[Punkeyboozter 19]

Tuck in that tummy ya hillbilly.

Thanks for sharing.

[kryptonitewhite 1]

Tuck in that tummy ya hillbilly.

Thanks for sharing.

of course it has to take the snapshot for the vid right there.... damn it man!

[Dictator 39]

Nice room

[kryptonitewhite 1]

Nice room

my daughter loves the lights!