modifications

[Professor smith]

I have a commercially made subwoofer which I'm happy with however I would like to see if there are any modifications I can do to perhaps improve it. It uses two 12 inch drive units in a sealed cabinet powered by an amp also built into it. I was considering using better drive units but I probably wont be able to find out the specification of the drive units. Is it still possible?

If not can I use better damping than the polyester inside? or add damping material either inside or outside the cabinet?

[Michael Bean]

Are you having problems with it, or just not happy with the performance in some way?

Mike

[Professor smith]

theres no problem with it at all, i am happy with it. It would be better to leave it alone if the modification may make it worse. Thats why I am only considering minor changes which will make major improvements if thats possible.

[revboden]

What model is it?

[sreten]

Hi,

Better drive units will not be cost effective, your stuck with two spare drivers.

Subs are so simple they are hard to improve, you can increase the stuffing.

The only major improvements possible are electrical, bass boost really low
down and possibly a notch filter to deal with the major room mode peak.

rgds, sreten.

[moray james]

you could consider braces and stiffening of the panels and connecting them together also helps. You can add some additional stuffing to make up for the volume lost to materials used. Make sure the whole thing is air tight. That's about the bulk of what you might do. Best regards Moray James.

[qguy]

Unless you have crappy drivers....

if your going this route, what you need to do is compute the volume of the enclosure that you have and look for drivers that suits that enclosure.

You may even pull out the driver, post it here and someone might recognized it..

Originally Posted by sreten

Hi,

Better drive units will not be cost effective, your stuck with two spare drivers.

Subs are so simple they are hard to improve, you can increase the stuffing.

The only major improvements possible are electrical, bass boost really low
down and possibly a notch filter to deal with the major room mode peak.

rgds, sreten.

[sreten]

Originally Posted by qguy

Unless you have crappy drivers....

Hi,

Well most likely a crappy cabinet and crappy amplifier as well
will go with crappy drivers, that is generally the way it is.

rgds, sreten.