Heco CELAN REVOLUTION SUB 32A Mode D'emploi page 10

POSITIONING
The frequency range reproduced by the subwoofer cannot be pinpointed by the human ear. That's
why positioning generally doesn't present any problems. However, it is preferable to place the speaker
close to the front loudspeaker in front of the listening position. You should also make sure that the
distance from the sides and from the rear to items and walls is at least 20 centimetres as otherwise bass
reproduction may be impaired.
THE SUBWOOFER'S OPERATING ELEMENTS (FIG. 1)
Mains connection (1), mains-voltage switch (3)
The subwoofer is equipped with an integrated amplifier and needs to be connected to a mains outlet
by means of the supplied mains cable. The voltage selector has been set at the factory to 230 V for
operation in Europe.
Warning: Connecting the subwoofer to a 230 V mains outlet while the voltage selector is set to
115 V will lead to immediate destruction of the amplifier!
Operating mode switch (8), operating state LED (7), power switch (2)
Power switch ON
Operating Subwoofer is in permanent
mode operation, the LED is green.
switch ON
Favourable setting for the reproduction of
programmes with long quiet passages (this prevents
the subwoofer from switching off unintentionally).
Operating
The automatic switching on/off is
mode AUTO activated (recommended setting).
The subwoofer switches on automatically
when it receives a signal from the
receiver, the LED turns green.
It automatically switches to standby after receiving
no signals for some minutes, the LED turns red.
Level control (4)
This control is used to set the bass volume according to your preferences. Proceed as follows::
1. Set the bass control of your amplifier into its centre (linear) position.
2. Important: Set the level control to its left stop (lowest volume).
3. Now, play back some music and set the volume control of the amplifier to the desired level.
4. Set the subwoofer level control to the desired bass level.
Cross-over frequency control (5)
Used to set the upper limit of the subwoofer operating range. The cross-over frequency should be set
to 50 to 150 Hz when the system is used in combination with shelf loudspeakers or 50 to 100 Hz when
used with stand loudspeakers.
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Power switch OFF
The subwoofer is
switched off, LED is off.
This is the setting for
when subwoofer isn't
used over long periods.