Posted by Todd W. White [ 68.92.105.153 ] on July 17, 2005 at 16:36:05:
In Reply to: Great Plains Audio 704-8A quick notes posted by spkrman57 on July 03, 2005 at 21:31:16:
The 704-8A really does better, as does the Altec 604-8G/H/K, in a large box, around 9 cubic feet (internal volume).
Crossover is suggested no lower than 1500 Hz. A "K" crossover in very good operating condition works pretty good with the 704.
I agree - the 704 "likes" a little more power to get the low end working well, but mostly, I think, in order to handle transients in the modern digital media. They're the most efficient 2-way ever built in the Altec tradition, perhaps by anyone else, too, but they do like to have a big box and extra amplifier headroom.
As for box tuning, Jerry Hubbard tuned the Iconic Stonehenge V System we demonstrated at the GPAF at 40 Hz using a horizontal slot of 11" H x 2.5" v x .75" D.
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