Correcting A Boomy Subwoofer (1 Viewer)

[Rory Buszka]

I have a ported subwoofer based on the older Blueprint 1001 10" subwoofer (the one with the double-stacked magnets) and I have a friend with a Sony SA-WM40 12" sub which sounds like it has a lot better transient decay. I want to know what I can do with my subwoofer (with its 12" wide, 1" high, 15" long port in an enclosure 14x20x12") to make its sound tighter.

 

[Griff]

If the sub is positioned in a corner, then move it, if the port is facing a wall (or the driver) turn it so that it doesn't.

Ensure that it is wired in the correct phase.

Check the Xover point on the amp, maybe lowering it a bit.

If your amp has "bass boost", turn it off.

Are you sure that the port dimensions are correct?

 

[Brian Fellmeth]

Wow Griff, thats one hell of a first post. Great suggestions there.

If none of that works, you may consider a BFD. It won't make the bass any "tighter" but it will be less boomy by removeing room induced spikes in the FR curve.

 

[Griff]

I am just waiting on some pics before i make an introduction.

Boomy subs can also be the fault of a boomy amp, some subs dont mix with certain amps, though it is rare with plate amps.

 

[Sean EH]

If you're comparing your sub to your friend's in different rooms, don't jump to any conclusions. The boominess could be due to a standing wave in the room, not a problem with the sub itself. Try comparing them in the same position in the same room.

 

[DaveDi]

stuff a towel in the port.