Installation
Important Safety Instructions
Read these instructions before any connection to the apparatus.
Please keep these instructions in a convenient place.
CAUTION
To avoid electric shock, do not open the subwoofer.
There are no user-serviceable parts inside.
Do not operate this apparatus near water.
Do not install near any heat sources such as radiators, heat registers, fireplaces, stoves, or
other items (including large amplifiers) that produce heat.
Do not cover the apparatus. Keep it ventilated.
Power connection
Do not defeat the safety purpose of the grounding-type plug. A grounding-type plug has
two blades and a third grounding prong. The third prong is provided for safety. If the
provided plug does not fit into the wall outlet, consult an electrician for replacement of the
obsolete outlet.
Protect the power cord from being stepped on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Attachments
Only use attachments/accessories specified by the manufacturer.
Servicing
Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in a way such as power supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or
moisture, has been dropped, or does not operate normally.
Maintenance
To prevent fire or shock hazard, clean only with a damp cloth. Never use cleansers or
chemicals.
Important Safety Instructions
Please note that excessive listening at high sound pressure levels may cause permanent
hearing damage.
Warning
This equipment can
produce sound pressure
levels in excess of 90 dB(A)
Unpacking
Contents
ABOUT THIS PRODUCT 6
OPERATION AND LOCATION OF CONTROLS 7
Level 8
Crossover frequency 8
Phase / Phase switch 8
Input terminal Right and Left / Input terminal Mono 9
Output switch / Output terminal Right and Left 9
Utility Link terminal Input/Output 10
Standby 10
Subsonic filter 10
Protection circuit 11
Power switch 11
AC inlet 11
Voltage switch 11
Fuse-drawer 11
INSTALLATION 12
Multi-channel sound system 13
POSITIONING 14
TROUBLESHOOTING 15
No sound 15
Distorted sound 15
SPECIFICATIONS 16
The Dynaudio subwoofer provides quality low frequency output to extend the frequency
range of the speaker system, and offers enhanced low bass when used as a dedicated
subwoofer in an A/V or surround system.
The SUB-20A is fitted with a 24 cm (9.5 inch) woofer, and the SUB-30A is fitted with a 30
cm (12 inch) woofer. To achieve maximum sound output, both models’ woofer is mounted in a
port tuned enclosure.
With Dynaudio's Utility Link, it is possible to combine two subwoofers in a multi-channel
audio system. With three inputs on each subwoofer, up to six channels may be summed into
one (mono) subwoofer channel.
The dimensions of the Audience SUB-30A will make it possible to use it as a CTV-stand. An
optional Audience Center speaker fits perfectly on top of the Audience SUB-30A, thereby
minimizing the space normally taken by a subwoofer in a living room.
Both subwoofers are selfpowered designs (actively amplified). The amplifiers power supply
can be used with various voltages, 115/230 V ~, and frequencies, 60/50 Hz. A voltage selector
switch on the back panel of the subwoofer may be positioned according to the required voltage
in your area. The setting is pre-set by the manufacturer prior to shipping. Do not try to alter
the voltage setting, as doing so will result in a blown fuse. Wrong settings may result in
damaged electronics.