Audience SUB-20A Audience SUB-30A Owner's Manual and Safety Instructions
Copyright 1997 by DYNAUDIO A/S. All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, or otherwise whatsoever, without the prior written permission of DYNAUDIO A/S.
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. Installation 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.
Important Safety Instructions Sound pressure level 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 Every loudspeaker leaving Dynaudio has been carefully and thoroughly inspected and tested. When unpacking the subwoofer, be sure to check if any physical damage has occurred to the subwoofer due to shipping.
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 Distor
About This Product 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.
Operation and Location of Controls 1 2 3 4 5 6 7 8 9 10 11 12 13 Level Crossover frequency Phase Phase switch Output filter switch Output terminal Right and Left Input terminal Right and Left Input terminal Mono Utility IN/OUT terminal (bi-directional) Voltage selector switch Fuse-drawer Power switch AC inlet
Level The level control knob allows for subwoofer output matching to the system. To obtain a neutral sound balance it is important that the subwoofer level is set correctly. To do this, adjust the control up and down until a natural sounding bass level is obtained in the system. Readjustment is recommended if any crossover and/or phase settings are changed on the subwoofer.
Input terminal Right and Left / Input terminal Mono This subwoofer provides 3 low level inputs: Left, Right, and Mono. These inputs can be used in any combination. Signals from all 3 inputs are summed and fed to the subwoofer. Do not connect any of these inputs to high level signals such as power amplifier speaker outputs! If a SUB OUT terminal (or equivalent) is not present on the pre-amp/processor, then connect the subwoofer via PRE OUT to and .
Utility Link terminal Input/Output If two Dynaudio subwoofers are to be used, they may be connected via the Utility Link. With this link a total of six input terminals is possible. This feature is intended for use with a multichannel surround sound system. In discreet surround sound systems such as AC-3, MPEG- 2, and DTS, all 5 channels can be full range. With the Dynaudio Utility Link, the two subwoofers sum all these channels into one mono subwoofer channel, reproduced by the two subwoofers.
Protection circuit To prevent thermal overload, the mute circuit will be activated at 65°C (149° F) and will be automatically deactivated when the temperature drops to 50°C (122° F). Under normal conditions this should rarely occur. Power switch Switches the power on and off. When the subwoofer is on, the power switch lights up. AC inlet This is a grounding-type plug. If the sound system has an AC convenient outlet, connect the power supply cord from the subwoofer to this device.
Installation CAUTION Switch off all equipment before any installation! If the sound system has a SUB OUT terminal (or equivalent), connect the subwoofer to this terminal. (Fig. A) If the system does not have a SUB OUT terminal (or equivalent), connect the subwoofer input to the PRE OUT terminal on the equipment (Fig. B). (Fig. B) The subwoofer can also be used together with small main speakers, as in subwoofer/satellite systems.
frequency content from the main speakers. This is accomplished by changing the Output Filter switch from to . Multi-channel sound system In multi-channel sound systems such as AC-3, AMPEG-2, and DTS, the dedicated subwoofer (LFE; Low Frequency Effects) output from the surround decoder should be used (Fig. A).
Positioning Useful hints: Best results are usually achieved with the subwoofer aimed towards the listening area, positioned between the main loudspeakers and near the wall. Both the floor and the walls will enhance the sound output. If the subwoofer is placed in a corner, maximum sound output will be achieved, but the quality of the stereo image may be sacrificed.
Troubleshooting No sound If there is no sound from the subwoofer, please check the following: • Is the on? • Is the positioned at minimum? • Is your cable connected to output instead of input? • Is the back plate very hot? Wait until it cools off. • Is the audio system connected correctly? If there is any doubt, turn the power off. Connect a CD-player or tuner directly to the subwoofer and . Before doing so, make sure to turn down the level on the subwoofer.
Specifications Audience SUB-20A Frequency response Crossover frequency Variable low-pass High-pass output Sensitivity Max. amplifier power output Max. SPL Nominal impedance Mono, Left, Right input Driver Dimensions H, W, D Weight Power consumption Standby Max. 25 Hz-150 Hz (room depending) 60 Hz-120 Hz 80 Hz, 12 dB per octave 50 mV 90 W 110 dB (typical in-room) 47 K ohms 24 cm (9.5 inch) 430 mm, 276 mm, 455 mm (16.9”, 10.9”, 17.9”) 14 kilograms (30.8 lbs.
Copyright 1997, DYNAUDIO A/S, Denmark All Rights Reserved.
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