Variable Tuning Ultra-X12 Subwoofer
11
Use only with a 250v fuse
Employer uniquement avec
un fusible de 250v
RIGHT
LEFT
120V - 60HZ
5A
T 5A L 250V
MODEL Ultra-X12
POWERED SUBWOOFER
CAUTION
AVIS: RISQUE DE CHOC ÉLECTRIQUE. NE PAS OUVRIR.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
PASS-THRU TO
LOUDSPEAKERS
RIGHT
LEFT
HIGH LEVEL INPUTS
FROM AMPLIFIER
(INTERNAL X-OVER)
POWER
POWER
PHASE
VOLUME
THRU
INTERNAL
X-OVER
FREQUENCY
(HZ)
SUB IN
INTERNAL
X-OVER
0°
180°
OFF
AUTO
ON
MIN MAX
60
120
PORT
MODE
MAX OUTPUT
MAX EXTENSION
L
R
SUB IN
EXTERNAL
X-OVER
ON
AC
FUSE
OFF
MASTER POWER
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY WITH SAME TYPE
FUSE AND RATING
By adjusting the crossover frequency between the Ultra
and the rest of your system, you can perfectly match your
main speakers to the subwoofer. Depending on how you
connected the subwoofer to your audio system, the crossover
frequency is set by using the INTERNAL X-OVER FREQUENCY
control on the rear panel of the Ultra, or by using the sub-
woofer crossover controls of your receiver or processor.
If your receiver or processor does not have internal cross-
over controls, and it is connected to the subwoofer using
the SUB IN INTERNAL X-OVER jack or the HIGH LEVEL INPUTS
FROM AMPLIFIER terminals, then follow the instructions in
“Setting the Ultra-X12 Crossover control” on page 12.
If your receiver or processor has internal crossover controls,
and it is connected to the subwoofer using the SUB IN
EXTERNAL X-OVER jack, proceed to “Setting the Crossover
with your Receiver or Processor” on the next page.
Whether you use your receiver or processor’s crossover con-
trol or the Ultra’s, we recommend using the speaker/sub-
woofer crossover setting recommended by the manufac-
turer of your speakers. If this information is not available,
we suggest that you set the crossover to approximately
10Hz above the lowest frequency your main speakers can
produce cleanly. This can usually be found on the speaker’s
specifications sheet or from the manufacturer’s website.
Typically, a speaker’s frequency response is shown as a
range from lowest to highest frequency measured in
Hertz (Hz) followed by the tolerance expressed as a range
measured in decibels (dB). For example, if your speakers’
frequency response was rated as 50Hz – 20kHz, ±3dB, set
the crossover to approximately 60Hz.
Experiment with the Ultra’s crossover frequency and Vol-
ume control (see ”Setting the Volume Level” on page 13) to
fine-tune your subwoofer so that there is a seamless blend
between the Ultra and the main speakers’ output. Let your
ears be your guide.
Please note that the Ultra’s internal frequency settings
only control the subwoofer’s crossover point, leaving the
main speakers unchanged. If your receiver or processor has its own
crossover settings, it is better to use them as they control both the
crossover point of the subwoofer and your speakers.
Adjusting the Crossover Frequency
Understanding Frequency Response and
Crossover Frequency
+10
+5
0
-5
-10
-15
+10
+5
0
-5
-10
-15
50Hz
50Hz
20kHz
20kHz
60Hz
To
ler
anc
e in
dB
To
ler
anc
e in
dB
¼
To turn the Ultra-X12 on and off automatically
using signal sense:
1.
Set the Ultra’s POWER toggle switch on the rear
panel to AUTO.
The POWER INDICATOR LED will glow red.
2.
Turn your receiver or processor on and begin
playback of source material.
The subwoofer will automatically turn on when the Ultra’s
signal sense mode detects an audio signal at either of the
SUB IN jacks or HIGH LEVEL INPUTS terminals. The POWER
INDICATOR LED will glow green.
3.
Turn your receiver or processor off or end playback
of source material.
After a few minutes without an audio signal present, the
subwoofer will automatically turn off and the POWER
INDICATOR LED will glow red.
Turning the Ultra-X12
on and off automatically
Turning subwoofer on with signal sense
Turning subwoofer off with signal sense
POWER
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
POWER
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
POWER
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
POWER
OFF
AUTO
ON
Frequency Response of
Typical Front Speakers
This graph shows the
frequency response of a
typical set of front speakers to
be 50Hz to 20kHz.
Subwoofer
Crossover Frequency
The subwoofer crossover
frequency is where the main
speakers and subwoofer
frequency responses overlap
enough to produce a
seamless blend between the
two, in this case about 60Hz.
Main Speakers
Subwoofer
MASTER POWER
switch should be
set to ON
Set POWER
switch to AUTO
Ultra turns on when it
senses an incoming signal
and POWER INDICATOR
LED glows green
Ultra turns off when it no
longer senses an incoming
signal and POWER
INDICATOR LED glows red
Turn Receiver or
processor on, choose
source material and
begin playback
End source
playback or
turn the receiver
or processor off