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Re: More than happy to . .

68.223.10.37

Greets!

Ah, didn't recognize you as 'Richard Grant'. This all got beat to death many moons ago IIRC, so why no horn yet?

Anyway, if the mouth is against the floor and both walls, then the horn is the corner out as far as the top of it extends plus end correction, so call it a lossy 8 since the mouth will unload somewhat before the room gain curve kicks in unless it's in a fairly small, 'tight' room.

I don't recall what drivers were discussed, but the original and current Altec 515.8G's mid 30s Fs/~213 Hz mass corner is a 'no-brainer' for a 300 Hz Fh, with 30-300 Hz requiring a modest ~2:1 CR and M = ~0.7 (though using 1.0 (expo) will in theory sound better), so it will have at least another octave if not lost in the bend. Regardless, there's no need to use a driver with a mass corner higher than required and CRs >2 can be problematic depending on the driver's design and unless only relatively low power is used, ~3 is considered the practical limit with a typical prosound driver AFAIK.

GM

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