SUBSON
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PLEASE READ THE FOLLOWING SAFETY INSTRUCTIONS VERY
CAREFULLY BEFORE OPERATING SUBSON:
1. HEED WARNINGS. Observe all warnings on the subwoofer and in the operating
instructions.
2. FOLLOW INSTRUCTIONS. Follow all operating and use instructions.
3. DAMAGE REQUIRING SERVICE. The product should be serviced by qualified
personnel if:
a) The product does not appear to operate normally or exhibits a marked change in
operation.
b) The power cord or plug has been damaged.
c) Objects or liquid have fallen into the product.
d) The product has been exposed to rain.
e) The product has been dropped or the enclosure damaged.
4. SERVICING. Do not attempt to service SUBSON beyond that described in the
operating instructions. All other servicing should be referred to qualified service
personnel.
5. INDOOR USE. SUBSON is designed for indoor use in dry, domestic environments
only, and for use within a temperature range of 10 - 40 ° C (50 – 105 ° F).
6. OBJECTS AND LIQUID ENTRY. Do not let objects or liquids fall into the product.
Do not place a vessel containing liquid on top of the product.
7. WATER AND MOISTURE. Do not use SUBSON near water, for example near a
bathtub, or in a wet basement, or near a swimming pool.
8. WALL OR CEILING MOUNTING. SUBSON is neither suitable for mounting into the
wall, nor for mounting on the ceiling, since one of the aluminium parts is working as
heatsink. If you choose a position on the wall or on a shelf for SUBSON, the subwoofer
must be firmly secured into position. Otherwise the subwoofer could fall down because
of vibrations causing it to move, or “walk.”
9. VENTILATION. Site the subwoofer so that its location or position does not interfere
with its proper ventilation. Especially the rear of SUBSON should be uncovered, since
the heat sinking is mounted on the inner side of the rear plate of the cabinet.
The subwoofer should not be placed in a built-in installation, such as a bookcase or
cabinet, that may impede the flow of air.
10. HEAT. Site SUBSON away from heat sources such as radiators, heaters, stoves, or
other appliances (including amplifiers) that produce heat.
11. POWER SOURCES. Connect the subwoofer to an AC power outlet only of the
voltage type marked on SUBSON (this will vary depending on the voltage in the
country of sale and use).
12. POWER CORD PROTECTION. Route power cords so that they are not likely to be
walked on or pinched by items placed upon or against them, paying particular
attention to cords at plugs, power sockets, and at the point where they exit from the
subwoofer.
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13. LIGHTNING STORMS. Unplug SUBSON during lightning storms or when unused
for long periods of time.
14. CLEANING. The product should be cleaned only as recommended later in this
instruction manual.
15. RETAIN INSTRUCTIONS. Retain the safety and operating instructions for future
reference.
1
2
3
power cord input
fuse socket
power switch
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4
high level inputs: to derive signal from the loudspeaker outputs of an amplifier using
speaker cables for the connection, in cases where the preferred chinch input is not
feasible.
ATTENTION: Please ensure the correct polarity (consistency of plus and minus) when
connecting to the high level inputs!
5
chinch or RCA phono inputs: to derive signal from preamplifier or subwoofer
outputs. The preferred method for connection of SUBSON.
ATTENTION: It does not matter, if you put the chinch cable into the left or right input
(normally you only have one cable in your home theater, coming from the subwoofer
channel).
6 adjustable crossover frequency control: crossover point for subwoofer is tuned
according to the bass characteristic of your main loudspeakers and room acoustics.
7
8
volume controller: to adjust overall output of SUBSON
phase switch: critical adjustment to the phase characteristic of SUBSON in relation
to the bass region of the main, as well as center and surround, loudspeakers;
essentially aligns the timing of all of their output signals. Choose the switch position
that results in more bass by testing with several bass-heavy music tracks.
9
on position: SUBSON always on
auto: SUBSON turns on when music is detected
Recommended: AUTO switches off the subwoofer after 15 minutes without a music
signal. When music is played again, SUBSON returns to play mode automatically.
HOW TO PREPARE SUBSON FOR OPTIMAL SOUND
PERFORMANCE:
1. To avoid fingerprints on the aluminium, please put on the enclosed gloves when
positioning SUBSON.
2. Connect SUBSON to your signal source by using the chinch or RCA phono cables.
Alternatively, the SPEAKER LEVEL IN inputs can be used for signal connection. Using
speaker wire, simply connect to the subwoofer from the main speaker output terminals
of the main system amplifier.
3. Connect SUBSON to AC power outlet.
4. Turn the POWER switch on.
ATTENTION:
Do not be concerned if the LED does not glow immediately. In the recommended AUTO
position, the LED only glows when a music signal is detected, at that time the
subwoofer automatically turns on.
5. For best sound performance, it is very important to adjust SUBSON using the
following steps. It may be helpful to have one person assist by adjusting the controls,
while another remains in the listening position to guide the adjustments being made.
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Start with the controls in the following positions:
Crossover frequency: middle position (LOW PASS knob)
Volume: start at the middle position (12h) (VOLUME knob)
Phase: 0° (PHASE switch)
6. Listen: While playing music that has an abundance of consistent low bass, adjust
the output level of SUBSON until both the main
speaker’s and the subwoofer’s bass are clearly audible. [Attention: It may be
necessary, and in fact normal, that you have to turn the VOLUME control close to, or
even at, its maximum level. The gain structure of the SUBSON was developed to
produce the best sound, and that it may be necessary to adjust the VOLUME knob to
its maximum level.]
Then, check for phase consistency by switching from 0° to 180° using the
PHASE switch. Leave the PHASE switch in the position that achieves clearly louder bass
output.
7. If SUBSON is not loud enough, it is possible that your main loudspeakers do not
supply enough mid-bass. In that case the crossover frequency point (LOW PASS knob)
may need to adjusted to the highest frequency (90 Hz), in order to achieve maximum
mid-bass output from the subwoofer.
8. If SUBSON was loud enough (before step 7), turn the crossover (LOW PASS knob)
towards the lowest frequency (50 Hz) and readjust the output volume to the point
where the main speakers and the subwoofer are balanced or equal in output. At this
point, slowly raise the crossover frequency (LOW PASS knob) until a seamless
integration, or transfer of output, between main speakers and subwoofer is achieved.
General setup tip:
It is usually best to crossover as low as the bass characteristics of the partnering
loudspeakers sited in the room will allow. This will result in achieving the lowest
possible bass extension. However, one of the advantages of the installation of a
subwoofer is the ability to tailor the bass output of the system to the needs and tastes
of the listener. Therefore, feel free to experiment with a variety of settings until one is
found that is satisfactory.
ACCESSORIES:
POWER CORD: 1 pc.
FUSE: 1 pc.
For replacing the fuse inside the socket (rear side of SUBSON).
GLOVES: 2 pcs.
For protecting SUBSON against fingerprints.
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MAINTENANCE:
Your subwoofer cabinet can be cleaned periodically with a soft, damp cloth. Do not use
any chemical detergents. Should spots or stains appear, clear water can be used to
gently remove them.
Should the bass driver become dusty, it is safe to use a soft brush or cloth to clean the
woofer.
Happy Listening!
Your Vienna Acoustics Team
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