First try, how am I looking?

First I have to say thanks for such a great program. The documentation on it is also wonderful.

Right now my setup is in a small-medium sized aparment living room that's open to the hallway on the current level and the stairs to the upper level. With the size of this room I really have no where to move the sub or seating postion to help me tune. I'm using a BFD with a Definitive Technology 12. I just picked a house curve to play with starting at 100Hz rising 8db to 30Hz.

Here's my baseline



Then here is my current try



100Hz is the lowest x-over point on my reciever or I'd love to turn it down to 80Hz. It seems like once I get to 35Hz I hit a brick wall. Any comments are welcome!

[brucek]

Have you tried putting the sub in a corner to get as much room gain as possible?

You've done a good job with the response you've been handed. If the sub drops off at 35Hz, then there isn't much you can do other than make it as smooth as possible, and you've done just that.

brucek

[Sonnie]

I'm thinking a Definitive sub should extend lower than this... where is the location of your sub with that measurement?

As brucek stated... looks like you got it leveled out fine.

I'll probably have to take a picture to best explain it. The sub is in the bottom of my rack. The rack sits in the corner with the front toed in a little to aim it towards the sweet spot so the remotes work better. I should try a run going straight to the bfd or sub and make sure the drop at 35Hz isn't because of anything in the reciever.

[azjimmy]

Man, that roll off at 35 Hz is brutal. Do you have some type of attenuation setting (Midnight Mode etc) on your receiver turned on?

Go through this list http://www.robbroy.net/HT/SubwooferErrors.cfm
It was put together by Ed Mullen and is hosted by a great guy, Robb Roy.
If not, try looking for other placement options...
Jim

[Chrisbee]

Good list!

I was running my DVD player in dynamic compression mode for ages until I needed to look in the menu for something else and discovered the error.

The near 40dB/octave slope on dalum's sub must be the result of cascaded filters somewhere in the system.

There's an awful lot of bass pressing against the dam.

I just hope nobody gets hurt when the sluices are finally opened.

[eddthompson]

i thought drc in the dvd player only afected the analogue outs, not the raw DD or DTS bit stream.

obviously in the amp it causes grief.

edd

[Chrisbee]

I'm still wondering about that but that's for another thread on another forum.

[eddthompson]

ahhh but as dalum hasnt replied yet, i am free to muse on such things.

edd