Eminence Lab12, ported box

[jimmshoe71]

was wondering what the rate of rolloff is with a 4th order bandpass box? is it 24db/octave like a regular 4th order crossover?

[drumsz]

so is this thread dead ??
i have 2 of these also want to use them for added bottom end at the club i work, middle stage on floor have a ton of plans tapped and horn type but everyone says no to that well at least for the horns and the tapped mixed response. love some labs but i like my back and do have to move them out
every so often.
i have a couple plans for reflex but whitch one any help appreciated

plan one is for a paudio12-250n box is called BP12 yes band pass like to make it a double instead of 2 seperate

plan two is kida of like the eaw SBX220 but the ports are on the side so it will sit lower

so what do you guys think??

[jimmshoe71]

i plan on build the tapped lab12 project down the road... but for now i believe i am just going to try sealed. i am just going to be using it for home theater.. while the tapped horn is quite large, i feel a couple casters (removable)on the bottom would make quite easy to move.

[sangram]

I still haven't moved an inch on the project. I have the amps, but have not proceeded with buying the drivers yet - the accompanying standmounts have not yet finished, so no sense in crowding the house, so to speak...

[layertone]

I'm building 2 of these boxes... ~3.3 cf, 4" port x 13" length

3/4" Apple ply is becoming a preferable material to use The entire box took less than 3/4 of a 4x8 sheet, all CNC machined. everything fits like a sprayed on glove

Top & bottom will have handles, the back will have 3" wheels, bottom 1" rubber feet.

[drumsz]

WOW looks awsome !!!!!!!
cnc too dam i am jelous
any who this is a tapped i built this thing pounds
love to hear and see how yours turn out.

[Cal Weldon]

Pic doesn't load for me.

[event horizon]

Apologies for the brief thread jack

Originally Posted by jimmshoe71

was wondering what the rate of rolloff is with a 4th order bandpass box? is it 24db/octave like a regular 4th order crossover?

A 4th order bandpass rolls off at the upper & lower frequencies at 12Db/octave the same as a sealed box.

A 6th order bandpass would roll off at 24Db/octave at it's lower frequency extreme & 12Db/octave at high frequencies.



E2A:- Love the quality of that enclosure build Oh for a CNC machine.

[drumsz]

Sorry how about this with some other's i was thinking about

M & D Sound and Entertainment

[layertone]

@Drumsz
Thank you, it is always fun to assemble parts that fit perfectly & nicely

@event
The CNC is a very nice build, sturdy & accurate. At the time, the choice was Shopbot or TechnoCNC

The CNC is a great tool. 80% of the time is designing & I also 3-D assemble to make sure all the parts fit before bringing into ArtCAM > CNC.