Reply to thread

Message

<blockquote data-quote="ktraughb" data-source="post: 6190108" data-attributes="member: 567457">it is a trunk focus. my most recent box was a pretty run of the mill 4.25 cu ft box, tuned right around 40 Hz. it did fairly well for spl, and still had some musical quality. what i am thinking of doing now is a type of bandpass enclosure. i understand sq is at a loss for most bandpasses (not all) but i also understand that if done correctly they can be much more efficient than a simple slot ported enclosure.first off, has anyone attempted to build a bandpass in a similar trunk, and second off was it a fourth or sixth order? i simply dont think ill have the room for a sixth order, but some general plans i have made for a fourth order would work. overall usable external space is about 8 cubic feet. the one i have designed is about 6 total after displacement.does anyone have any pointers whatsoever on designing a bandpass as far as chamber sizes (not specific obviously but a generalization of comparison from sealed to ported chamber). the subs will most likely be a pair of p3s, type rs, or some ma audio hks.i dont have the t/s handy for any of these so im simply looking for some general rules as of right now. any help is appreciated ahead of time. also, i am not opposed to porting into the cab through seat opening, and i have already cut a ten inch port opening through my rear deck for an older box. so it is usable as well.</blockquote>

[QUOTE="ktraughb, post: 6190108, member: 567457"] it is a trunk focus. my most recent box was a pretty run of the mill 4.25 cu ft box, tuned right around 40 Hz. it did fairly well for spl, and still had some musical quality. what i am thinking of doing now is a type of bandpass enclosure. i understand sq is at a loss for most bandpasses (not all) but i also understand that if done correctly they can be much more efficient than a simple slot ported enclosure. first off, has anyone attempted to build a bandpass in a similar trunk, and second off was it a fourth or sixth order? i simply dont think ill have the room for a sixth order, but some general plans i have made for a fourth order would work. overall usable external space is about 8 cubic feet. the one i have designed is about 6 total after displacement. does anyone have any pointers whatsoever on designing a bandpass as far as chamber sizes (not specific obviously but a generalization of comparison from sealed to ported chamber). the subs will most likely be a pair of p3s, type rs, or some ma audio hks. i dont have the t/s handy for any of these so im simply looking for some general rules as of right now. any help is appreciated ahead of time. also, i am not opposed to porting into the cab through seat opening, and i have already cut a ten inch port opening through my rear deck for an older box. so it is usable as well. [/QUOTE]

Verification