Owner's Manual

ULTRA
SPEAKER
FEATURES
&
SPECIFICATIONS
ULTRA
BOOKSHELF
Frequency
Response
and
Electro-Acoustic
Data:
Rated
bandwidth:
45
Hz-32
kHz
3
dB).
Nominal
impedance:
8
ohms.
Sensitivity:
87
dB
(2.83V@
1
meter
full-space,
300-3kHz).
Recommended
amplifier
power:
20-150
watts
Loudspeaker
Physical
Description:
Dimensions
(HxWxD):
14.9
11
x
8.5
11
x
10
11
,37.8
x
21.6
x
25.4
em.
Weight:
19
lbs.,
8.6
kgs.
Dual
gold-plated
5-way
binding
posts.
1.7"
rear-firing
port.
Cloth
grille
with
pin/cup
retention
system.
Driver
Array
and
Technical
Highlights:
1
11
tweeter
features
FEA-optimized
diffuser
and
aluminum
dome.
6.5
11
woofer
features
composite
glass-fiber
cone,
aluminum
shorting
ring,
cast
aluminum
basket
and
vented
voice
coil
former.
SoundMatch
Crossover
Network:
2-way
crossover
with
premium-grade
capacitors,
air-core
inductors
and
heavy-trace
printed
circuit
boards.
Crossover
frequency
and
slopes
optimized
for
excell~nt
off-axis
polar
response,
outstand-
ing
phase
coherency,
and
total
radiated
sound
power.
Tweeter-to-woofer
crossover:
2
kHz.
Cabinet
Construction
Technical
Highlights:
Precision
CNC-manufactured
cabinet
with
extensive
internal
blocking
and
bracing,
resulting
in
no
resonances
and
excellent
rigidity.
Acoustically
transparent
and
FEA
optimized
grilles,
wedge-shaped
front
baffle
and
flush-mounted
drivers
all
contribute
to
reduced
edge
diffraction
and
improved
on-axis
high
frequency
response.