BillFitzmaurice.info

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A 24x24x48 T48 comes in closer to 90 pounds, depending on the driver. That's still far less than comparable commercial subs. A Danley TH-112 is 138 pounds. It's also $4k.

If I was there I could explain it, but there's only so much I can do without actually being there. Beam forming is a thing, ask anyone who's been subjected to a Vox AC30 on axis at 110dB while someone thirty feet to either side can't hear the guitar.

They do not. Not enough builders have CNC to justify it.

Old Mike wrote: ↑Mon Nov 17, 2025 11:19 pm Will the design be available to us DIY people?

That's up to the manufacturer.

Horizontal dispersion is inversely proportional to the width of the source, so the wider the source the narrower the pattern. That's usually a bad thing with respect to tops, as you're starting off with 180 degrees or less with one cab. That's why tops should seldom be arrayed horizontally. With a s...

I am sure I've heard one, just not knowingly. You probably haven't, as they're quite rare other than DIY. That's because being very labor intensive to construct they're much more expensive than direct radiators. That matters not to DIY, we don't pay for labor. They're also larger than direct radiat...

You've never heard a horn loaded sub, have you?

No matter, you can't hear how it looks.

They're equivalent in how they work, but not in price. Carpet padding can be free from local carpet installers as scraps. The additional cab depth won't have any effect.

I drop builders from the list only at their request. As for more modern retail cabinets, there have been very few significant changes to them, other than upgraded driver performance. I account for that by periodically revising the recommended drivers list, so to the extent that commercial cabs are g...

FWIW the LAB became a viable option when neo driver prices went nuts. LAB prices are up too these days, so shop around for equivalent neo drivers if weight is a concern.

There's no such thing as power hungry, other than with very low sensitivity drivers, which wouldn't be within spec range anyway. You just won't get what a high Pe long xMax driver is capable of if you don't have enough power, which often means you're spending more than you have to. Where driver comp...

Either will work, the 800 will have more output in the lows with sufficient power, the 700 is stronger in the midbass.

Have you read this? https://billfitzmaurice.info/forum/viewtopic.php?t=398 Part and parcel of proper sub placement is that they not be directionally locatable. That means crossing at 120Hz or lower, but no lower than necessary, to take the low frequency load off the mains. BTW, your JBLs are down 3d...