High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

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Mass Loading ALTEC A7 VOTT 825 enclosures

Posted by drlowmu on February 18, 2016 at 10:17:57:

This is the neatest and cheapest way to mass load bone-stock A7 enclosures. These red concrete tiles come from Lowes, and cost $1.47 each, weigh 17.6 pounds each. I used about 26 by ear, to get the box to play best-to-my ears, without doing any bracing mods to the stock 825. That is about 440 pounds added to each A7 VOTT enclosure. I was using a 515B played full range, to make these determinations by ear. Next, I will add a tweeter to the mix. This was FUN to hear !!

Jeff Medwin