VOTT Cabinet scaled for Altec 414

[Lunes]

Hello,
is anybody aware of an existing downscaled 825 or 828 cabinet for a 12" 414 woofer?
I am not so experienced with the selection of
the right cabinet for a speaker but I do like wood working and I definitely like the design of the original 825 cabinet. But the size is for an average living room a little bit too big. I thought that a VOTT cabinet for a 12" woofer would be just right.
Any help is appreciated.
Best Regards
Lunes

[GM]

Actually, due to the 'nature of the beast', the cab design would stay the same except for a smaller driver cutout sized for the correct HF cutoff and possibly larger vent size to get the desired horn LF corner frequency, i.e, you can not shrink a horn without increasing its LF corner frequency and passband 'ripple'.

If width is the main issue, you can 'squeeze' the cab into a taller, narrower version by making three sides flat and the bottom side with all the flare, shifting the vent to either the sides or rear to keep the drivers from being too high, or better still, add subs to the side. Designing it so the horn goes all the way to the floor will lower Fc an octave via 'mirror' imaging, a big bonus.

FWIW, I prefer the LF driver at the head/chest level with the HF angled down to suit since this is normally the way they would be in a live venue/cinema. Also, it helps with reducing early reflections and lowers the 'floor bounce' frequency, always a 'good thing'.

Really, for all its performance, the A7 has too many compromises as is for really good HIFI reproduction in today's ultra wide BW, SS driven world. It was designed for mass quantities of series resistance to flatten its response and cover a ~50-12kHz F3 BW with high intelligibility. Time to put them in a museum beside a '49 Ford and move into the 21st century IMO.......

GM

[Altec19]

Hi GM,

What do you consider to be an appropriate 21st century replacement for the A7 in the living room? Just curious, not that I would readily give up my Model 19's.

Thanks!

[GM]

A more appropriate design for extreme performance would be a radial folded basshorn ala the LABhorn and either a 9864 or Unity concept mid/HF horn using Altec components, but the former requires some significant tooling investment if GPA doesn't have them plus either be willing to mod existing duplexes or buy new ones, and the latter is patent protected, so you're looking at paying a fee plus the tooling, etc., costs.

Considering the market, this would be a good way to turn a large fortune into a small one, so for us DIYers, pretty much what I outlined, a reconfigured midbass horn with integrated sub and either a small format conical CD HF horn or large format CD mid horn plus super tweeter horn with the requisite digital XOs/adj. TDs depending on the XO point desired.

For the budget minded and/or smaller room, use a duplex and vent them.

GM