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From: keithe@tekgvs.UUCP (Keith Ericson)
Newsgroups: net.audio
Subject: (re)building my speakers
Message-ID: <1123@tekgvs.UUCP>
Date: Thu, 13-Jun-85 02:17:33 EDT
Article-I.D.: tekgvs.1123
Posted: Thu Jun 13 02:17:33 1985
Date-Received: Sat, 15-Jun-85 06:27:49 EDT
Organization: Tektronix, Beaverton OR
Lines: 22


	I've got my trusty ol' bass reflex enclosures (approximately
30"h x 12"d x 18"w) that I've been thinking about modifying. The
speaker complement is ElectoVoice SP12B 12" woofer, Philips AD5060 5"
midrange and Philips AD0160/T dome tweeter. I use active crossovers
between woofer and the midrange/tweeter pair (crossover frequency is
350 Hz), and a 1-pole passive crossovers to separate midrange and
tweeter signals (i.e., an inductor in series with the midrange, and a
capacitor in series with the tweeter) at around 3.5KHz.
	What I've been thinking about doing is blocking the port hole
that currently exists in the front baffle of the box and re-cutting it
on the bottom, and then raising the cabinets X inches off the floor,
where X is "the correct value" to be determined (somehow) later. The
object is to couple the bass energy to the floor to shake the room up a
little more. (It seems to me, now that I think about it, that the old
Heil AMT-1?'s were built someting like this: is that right?)
	Anyway, if you have any comments, opinions, or (oh, no - could
they even exist) *facts* regarding such a modification I'd be very
pleased if you'd pass them along to me.

Keith Ericson at Tek Labs
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