Heco ELEMENTA SUB 3830A Mode D'emploi page 10

THE SUBWOOFER'S OPERATING ELEMENTS (FIG. 1)
Mains connection (11), mains-voltage switch (8)
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 120 V will lead to immediate destruction of the amplifier!
Operating mode switch (6), operating state LED (5), power switch (9)
Power switch ON
Operating Subwoofer is in permanent operation, the LED is
mode switch green.
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 activated
mode AUTO (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.
Line inputs (7)
For connecting to level outputs on a receiver/amplifier (stereo mode), see Fig. 2.
For connecting to an AV receiver with low-level subwoofer output, see Fig. 3.
Level control (1)
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 (2)
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.
Phase control (3)
In normal use the phase control should be set to 0°. However, in rare cases it may be advantageous
to vary the phase to between 0° and 180° (e.g. if the subwoofer is far away from the front satellites
or in the event of unfa-vourable acoustics in the room). Generally speaking: the setting where the
lower base tone area has a more natu-ral sound is the correct one.
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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.