Definitive Technology UIW RLS II Brochure & Specs page 3

The IWSub Reference
employs a 13-inch woofer
that has been radically
slimmed to fit in a wall;
it's such a tight fit that
Definitive had
to cut a hole in the
back of the enclosure
The IWSub Reference (below)
uses an active 13-inch woofer
on top and a passive radiator
below. In order to maintain
rigidity in the woofer's shallow
cone, Definitive made it from
stiff, thick treated paper; it feels
almost like a thin sheet of MDF.
NEW REVIEWS
to accommodate the
woofer's magnet. A 13-
inch passive radiator
reinforces the woofer's
deepest bass notes.
A separate amplifier,
the SubAmp 600, fits
into your equipment
rack. The SubAmp 600
is a stereo amp; it pro-
vides 275 watts to a sin-
gle IWSub Reference or
230 watts each to two
IWSub References.
Does the UIW RLS II
sound as good as many
The two 6.5-inch passive
radiators used in the UIW
RLS II (right) are like
speaker without magnets or
voice coils. They reinforce
the speaker's bass and
negate the downside of
using a back box.
"is far better in
this regard
than practically
any current in-
wall speaker"
excellent in-walls already
on the market? Actually,
it sounds better than
most. If this speaker has
a flaw, I cannot find it.
(OK, the product name
sucks. But besides that.)
It sounds at least as good
as any other in-wall I
have tested, and given
that I started evaluating
these speakers regularly
in 1995, I have tested
quite a few. From the
bass to the high treble,
it sounds as uncolored as
any speaker that comes
to mind. I hear pinpoint
imaging between the
speakers, and the system
"The IWSub
Reference is
certainly the
best in-wall sub
I have heard"
wraps me in a huge
ambient soundstage.
The UIW RLS II does
not match the soundstag-
ing of the best freestand-
ing speakers, but it comes
close — and it is far bet-
ter in this regard than
practically any current
in-wall speaker except for
the MartinLogan Voyage
and Thiel PowerPlane.