Anyone know anything about subwoofers?

[GrumpyGregry]

Non ported is the way to go I think having had speakers both with and without. Just an opinion though.

Fight!

 

[Milo]

Un ported does tend to lead to an inefficient speaker though. Got rid of a pair of 80s Cantons because my valve amp would not really handle them at higher volumes. Now have a set of Leak sandwich (not edible) speakers which are unported and very efficient.

 

[GrumpyGregry]

Un ported does tend to lead to an inefficient speaker though. Got rid of a pair of 80s Cantons because my valve amp would not really handle them at higher volumes. Now have a set of Leak sandwich (not edible) speakers which are unported and very efficient.

but isn't that more a mismatch between amp and speakers rather than ported vs sealed cabinet per se?

EDIT: He's using a valve amp?!? STONE HIM!

 

[GrumpyGregry]

Nice article on the principles of (bass) speaker cabinet design here

 

[Milo]

Mostly yes. However I believe I am right in saying unported has a tendency to be less efficient than a ported design? I am by no means all that knowledgeable about these things. Not currently using a valve amp needs an overhaul as it has a buzz on one channel capacitaters worn out I think. I do not know anywhere to get the work done in Wiltshire and I cannot afford it TBH. Using a cheapo Cambridge audio amp at the mo.

 

[Chrisz]

I seem to remember that ported/non-ported box design has something to do with the movement range of the driver and the frequency required. Ported boxes deliver deeper bass but sealed boxes "punch" harder (one rumbles the other bangs)???

We need someone with a Nova and blue LED washer jets to enlighten us LOL

 

[ColinJ]

Wikipedia article on loudspeaker enclosures.

 

[Night Train]

Having designed and built a few enclosures in my youth for bass guitar playing my suggestion would be to suck it and see.

I would be tempted to put it on its side on top of a wall cabinet and see what it sounds like. The port at the bottom of the box could be placed against a wall leaving a gap for air movement. If it rattles the cabinet contents then try a different cabinet to put it on.

You can also just place it where you want it on the floor and put a box over it.

When it sounds the way you want it, whether it is technically right or not, stop messing and enjoy.

 

[GrumpyGregry]

I seem to remember that ported/non-ported box design has something to do with the movement range of the driver and the frequency required. Ported boxes deliver deeper bass but sealed boxes "punch" harder (one rumbles the other bangs)???

We need someone with a Nova and blue LED washer jets to enlighten us LOL

Pretty good summary. Porting can be used to tune the frequency of max response.

 

[derrick]

You got to let it breath, needs a bit of space around it.