Owner's Manual
ULTRA
SPEAKER
FEATURES
&
SPECIFICATIONS
ULTRA
CENTER
Frequency
Response
and
Electro-Acoustic
Data:
•
Rated
bandwidth:
45Hz-32kHz(±
3
dB).
•
Nominal
impedance:
8
ohms.
•
Sensitivity:
87
dB
(2.83V@
1
meter
full-space,
300-3kHz).
•
Recommended
amplifier
power:
20-225
watts
Loudspeaker
Physical
Description:
•
Dimensions
(HxWxD):
8
11
x
22
11
x
10
11
,
20.3
x
55.9
x
25.4cm
•
Weight:
31
lbs.,
14.1
kgs.
•
Dual
gold-plated
5-way
binding
posts.
•
Dual1.7"
rear-firing
ports.
•
Cloth
grille
with
pin/cup
retention
system.
Driver
Array
and
Technical
Highlights:
•
Vertically
aligned
tweeter
and
midrange
improves
horizontal
axis
polar
response,
with
reduced
lobing
and
comb
filtering.
• 1
11
tweeter
features
FEA-optimized
diffuser
and
aluminum
dome.
• 4
11
midrange
driver
and
6.5
11
woofer
features
composite
glass-fiber
cone,
aluminum
shorting
ring,
cast
aluminum
basket
and
vented
voice
coil
former.
SoundMatch
Crossover
Network:
•
3-way.
crossover
with
premium-grade
capacitors,
air-core
inductors
and
heavy-trace
printed
circuit
boards.
•
Midrange-to-tweeter
crossover:
2
kHz.
•
Midrange-to-woofer
crossover:
500
Hz.
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.