theres ones that are enclosed within glass
and afterwards open ones
what are the differences and which ones do you approaching
any suggestions on a boxed sub less than 250
Answers: It's not really base on what you like so much as what is recommended for the sub(s) you buy.
More info here http://spkrbox1.spaces.live.com
There are hermetic boxes, where one partly of the speaker is eclosed in a hermetically sealed box (front half or put a bet on half)
There are ported boxes where partly of the driver is enclosed contained by a box with nouns holes, called ports
"the ones beside the glass" are typically referred to as "bandpass" they are a mixture of sealed and ported, and typically hand over you the loudest bass for the driver size...(speaker)
Hope this helps you opt...
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