In-Wall Theater Snell takes THX Ultra 2 quality to the wall.
As a firm believer in most of what THX has contributed to the home theater
genre, I was excited to find out that Snell’s AMC 2000THX is an in-wall version
of (and meets the same THX standards as) the company’s THX Ultra 2 certified
model––the XA1900THX in-cabinet speakers––except that the 2000 fits between a
regular 2 by 4 stud bay. The THX certification ensures the speaker will
reproduce the demanding soundtrack requirements of Hollywood’s latest
blockbuster without distorting or otherwise falling apart, sonically. This
speaker provides that in a space-saving form factor.

Though it is no longer
required by THX, Snell continues to take advantage of a D’Appolito-type driver
array, in this case placing identical 2.5-inch midrange drivers above and below
a single 1-inch dome tweeter. This arrangement helps direct more of the sound
vertically toward the listening area, and less of it toward the floor and
ceiling, where problematic acoustical reflections occur. And yet the design
supposedly creates less off-axis lobing than other arrangements so that in-room
frequency response is smoother and more natural overall.
This certainly
bares true, as the speakers prove to have excellent imaging and soundstage
characteristics. Instruments seemed to emanate from a point between the two
speakers as if I was listening to the musicians during the actual recording.
There’s a good sense of depth to the sound, as well (an inherently difficult
attribute for in-wall speakers), even without surround speakers, though it’s not
quite as deep as that from good freestanding speakers like the Triad LCRs. Much
of this is likely due to the AMC 2000THX’s ability to avoid unwanted floor and
ceiling reflections. And yet the sound has a soft, laid-back quality that makes
it easy to listen to. There aren’t any noticeable colorations or distortions.