Radius
4
5. Volume Control
This control allows the level or volume to be adjusted in order to achieve a balanced overall
sound. To use this facility you will need to play a selection of familiar music or film excerpts.
Start with the volume at minimum and increase the level control until a balanced sound is
established. If using an AV processor or AV receiver amplifier, the system can be adjusted
by the test tone function within the set-up features. (Refer to the set up section in the AV
processor or AV receiver amplifier user guide.) When the subwoofer is correctly set-up, you
should not be able to identify its location easily in the room.
6. Bass Switch
This switch tailors the bass response of the subwoofer to your tastes. There are three settings:
Music, Movies and Impact. Movie mode provides a relatively flat response down to 35Hz.
Music mode is -2dB down on Movie mode but goes lower, all the way down to 30Hz. Impact
mode is +3dB up on Movie mode and comfortably goes down to 40Hz.
7. Phase Control Switch
The Phase Control is used to synchronise any delay between the subwoofer and main/satellite
speakers. When the subwoofer is in phase with the main/satellite speakers the sound should
be full bodied. Sit in a normal listening position whilst adjusting the phase switch. Help from
another person may be required. When set correctly the location of the subwoofer should be
almost undetectable. Experimentation is advised in order to achieve optimum results. However
it should be noted that in most cases the phase control switch should be set to 0 degrees,
especially when using a digital AV processor or AV receiver amplifier.
8. Power Mode Switch with On-Auto Facility
With the switch in the ‘On’ position, the subwoofer is permanently switched on under all
conditions. In the ‘Auto’ position the subwoofer will automatically switch on when an input
signal is received. It will remain on for a period of 15 minutes without receiving a signal before
switching into standby mode until a signal is received once more.
Additional Notes on the Auto On Function
When using the auto on feature, the subwoofer we “lock” onto the input it was activated by. In
most cases, when using either stereo or LFE input connection this will not matter. However, if
using both stereo and LFE connections, you will not be able to toggle between inputs until the
subwoofer has gone into standby mode. This can be done manually by turning it off and on
again, or by letting it time out (15 mintues) before changing the inputs over.
9. Mains Power Switch
The Mains Power Switch should be switched to the ‘Off’ position when the subwoofer is
unused for extended periods. The switch must be in the ‘On’ position for the subwoofer to
function.
WARNING:
Due to the mains switch being located on the rear panel, the apparatus must be
located in the open area with no obstructions to access the mains switch.
10. IEC Mains Power Connector/ Fuse Location
The subwoofer is supplied with a two-pin mains input socket for connection to the mains
supply. Use ONLY the appropriate IEC mains lead provided with the product. Also fitted is an
external mains fuse. If this fuse blows during operation a spare fuse is provided within the fuse
holder for replacement. If you wish to change the fuse, you can do this by removing the IEC
mains lead and carefully levering out the original fuse from its holder below the IEC mains input
socket (10a). If the fuse blows again it is advisable to seek help from an authorised service
agent. DO NOT attempt to re-fit a further fuse as this could result in serious damage to the
amplifier unit.
