604's in A7 cabs

[Skip Pack]

I've run across this mentioned in passing a few times, but, since I have
some freshened 604C's, I was curious to hear how they might work in the
basic 825 cabinet with the porting optimized by experimentation. Has
anybody here followed this path?

thanks,

Skip

[gearfreak]

Not yet... but perhaps this winter!

[Panomaniac]

I heard them and loved them many years ago. Wanted to try them again this year, but you have to cut a hole in the rear panel of the box. The coax drivers are a bit too deep to fit.
Or make a new panel with the hole in it.

I remember it as a very nice combo.

[Skip Pack]

I was thinking that, since I would build these from the plans, I might
arrange to fill the volume around the flairs on the sides and maybe the bottom
with foam for rigidity, sort of squaring off the horn into an internal block.
I could then regain the lost volume by making the cabinet deeper front
to back, or maybe just the top half adding enough depth for the 604.

[GM]

Experimented with 604E in scratch built A7-500 (825 cab) tuned to ~40 Hz using 3/4" marine grade ply and extra bracing. Horn section damped with kitty litter. Wound up lining the top inside of the flare with a thick foam and putting the HF horn mounting angle back on to brace the top. Sounded pretty good to us, but worked even better as a three way with the 511, though the owner ultimately put them in a false wall IB with 515B 'helper' woofers which was best overall.

GM

[Altec Best]

You may want to ask Analog Addict as he is running a pair of 828's/604's now I think, maybe he can give some help.

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