User Manual

7 6040R Operating Manual
BASS
The Bass control offers wider reduction of the
bass output below 800 Hz (see Figure 8). The
attenuation levels are –2 dB, –4 dB and –6 dB
(both switches ON). This control is useful in
balancing out the bass level relative to the mid
and high frequencies.
TREBLE
The Treble control allows adjustment of the high
frequency output above 5 kHz by +2 dB, –2 dB
(both switches ON) or –4 dB (see Figure 8). This
control is useful for correcting excessively bright
or dull sounding systems or to compensate for
any high frequency loss when the monitor is
placed behind a projector screen.
LED DISABLE
This switch shuts off the LED light on the
loudspeaker’s base.
ISS
This switch activates or deactivates the ISS
automatic power saving function.
ISS TIME
This switch selects the time of inactivity after
which the loudspeaker goes into power saving
mode. The time is approximately 60 minutes (the
switch set to “ON”) or 20 minutes (the switch set
to “OFF”.)
DIGITAL A and DIGITAL B
The Digital A and Digital B switches select which
digital audio channels are reproduced by the
loudspeaker. Turning both “DIGITAL A” and
“DIGITAL B” switches “ON” reproduces the sum
of the A and B channels. A 6 dB attenuation is
applied to avoid overloading the loudspeaker.
LEVEL
The two Level switches work in conjunction with
the rotary Level control to reduce the maximum
overall output to a more comfortable level where
required. The switches individually provide 10
or 20 dB of attenuation, while setting both to
the “ON” position gives 30 dB of attenuation.
The rotary Level control can then apply up to an
additional 12 dB of attenuation when set fully
counterclockwise, see below.
STORED
The “STORED” switch selects either the physical
controls on the loudspeaker base panel or the
settings stored inside the loudspeaker using
GLM calibration software. The “OFF” position
selects the loudspeaker’s local controls. The
“ON” position selects the stored GLM settings.
Selecting the stored settings disables the
loudspeaker controls on the base panel.
LEVEL rotary control
The rotary “LEVEL” control adjusts the
loudspeaker’s output level. First set the
correct level using the LEVEL DIP switches,
as it is easier to repeat the same setting on all
loudspeakers. When using the rotary LEVEL
control, we recommend checking with a test
signal and SPL metre to ensure that the playback
level at your listening position is the same from
all loudspeakers.
9. Using the Tone Controls
As mentioned, the response of the 6040R can
be adjusted to overcome acoustical problems
in the listening room. Excessive bass level often
results if the loudspeakers are placed near a wall
or in a corner. Treble can sound too dull or too
bright depending on the acoustical damping of
the room. The “TREBLE” switch “+2 dB” makes
the sound brighter. If the treble feels too high,
use “–2 dB” (both switches “ON”) or “–4 dB” to
reduce brightness. See Table 1 for suggested
tone control settings depending on your speaker
location in the room.
Table 1. Recommended tone control settings.
Loudspeaker location Low Bass Bass Treble
Factory calibration,
at anechoic response OFF OFF OFF
Away from walls in a
damped room OFF –2 dB OFF
Away from walls in a
reverberant room OFF –4 dB OFF
Near a wall –2 dB –4 dB OFF
In a corner –4 dB –4 dB OFF