file smaller folded 18 cabinet for 2258s

5 months 2 days ago #24798 by tkroeker
smaller folded 18 cabinet for 2258s was created by tkroeker
I have a pair of JBL 2258H that are the older style with 3" dual coils. Looking for info on a smaller  folded horn that they will do good/low in.

Thanks

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5 months 2 days ago #24800 by Cubo15
Replied by Cubo15 on topic smaller folded 18 cabinet for 2258s
Do you have the T/S-parameters?

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5 months 1 day ago #24804 by tkroeker
Replied by tkroeker on topic smaller folded 18 cabinet for 2258s
JBL 2258H

FS - 31
QTS - .27
QMS - 4.02
QES - .28
VAS - 407
RE - 5.2
LE - 1.24
SD - .124
MMS - 140

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4 months 3 weeks ago #24806 by Cubo15
Replied by Cubo15 on topic smaller folded 18 cabinet for 2258s
It's a good horn driver for horns with a relatively large chamber. However the Mms is fairly low for an 18" and efficiency is very high, so I suspect it's a rather low Xmax driver. I wouldn't aim at very low frequencies and set the high pass at 40 - 50 Hz.

It will work in Cubo 18 Standard/ Extended. For a front loaded horn I would look into horns with a relatively large rear chamber, like the 186 horn, WSX or USB. For the front loaded horns I would use stacks of 2 - 4 cabinets, mono stack if necessary,

Cubo

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4 months 3 weeks ago #24808 by tkroeker
Replied by tkroeker on topic smaller folded 18 cabinet for 2258s
Awesome, thanks for your time on this!

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