Re: Building new sub/mid box
Try to keep the 2202 sealed.
What frequency are you crossing the 2445/2380 at?
Are you going to use active filters?
Re: Building new sub/mid box
So what I'm wondering is should the 12 be in a ported box, now that the crossover is lower than my original plan?:hmm: :hmm: Or leave it sealed?:hmm::confused:
Hi Wedge,
you do the same project at the same time like I do..;)
I use the 2240H with 30Hz Fres and a 2202 in a dogybox.
At this time I'm in the mesurement phase with a B&K test set.
I tuned up the port for the 220l box and let the dogybox with about 25l sealed......why?
For my opinion the CF needs (as your idea) 250 to 300 Hz and about 1kHz for the 2395 with a 2441 driver. In this time I use for the tests a 2397 with this 2441.
The 2202, when coupled at 250 Hz doesn't need a ported chamber, cause I don't need to lift up his sub level. This part is for the 2240. Without network the 2202 is able to drive down to 90Hz, as I figured out with the test set. This may show you that its ok with a sealed dogybox.
The port for the 2240 measures W = 560mm x H = 60mm and a D = about 120mm.
This tuning gives me a box resonance frequency in the diagram of 34Hz.....and it's ok. The passive network I figured out with "Microcap" it works fine.
I will try to put some pics in the forum to show what I mean.
keep in touch....
HP
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Re: Re: Building new sub/mid box
This tuning gives me a box resonance frequency in the diagram of 34Hz.....and it's ok. The passive network I figured out with "Microcap" it works fine.
I will try to put some pics in the forum to show what I mean.
Here's the first pic....
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Re: Building new sub/mid box
it's me again......
and here you see another pic with the inside stabilizers...with holes for the usage of the whole volume of the box and maximum stability. [/B][/QUOTE]
HP
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Daddy shoulda bought a table saw!!!!
But christmas is over and too much $ spent!:banghead: Oh well.;) It's hard cutting true and making mirrored pieces with a skill saw.
Broke ground (wood??) today and got the baffles and backs cut out. And :wtf:, no one carries 1" stuff around here so I have to be glueing pieces together. Would have had the holes cut out if it wasn't for that.:(
Re: Re: Building new sub/mid box
Quote:
Originally posted by Giskard
Try to keep the 2202 sealed.
BTW, now that you have BB6P you might want to plug in the JBL recommendation for a ported enclosure for the 2202H - 17.4" x 14.2" x 12.3" with a 4.2" diameter hole cut in a 3/4" baffle (1.5 cubic feet tuned to 80 Hz).