Genelec 8260A Operating Manual page 6

Monitor Treble
Mounting Position Tilt
Flat anechoic None
response
None
Free standing in
a damped room
Free standing in None
a reverberant room
None
Near field on
a reflective surface
In a corner None
Table 2. Suggested Tone Control settings for some typical
monitor placement positions.
controls are all "OFF" to give a flat anechoic response. Note
that these controls have no effect when switch 1 "STORED/
MANUAL CONTROL" on switch group 2 is set to "STORED" or
when the monitor is connected to the Genelec monitor control
network.
The use of an acoustic measurement system is recommend-
ed to analyze the effects of the adjustments, however, careful
listening with suitable test recordings can also lead to good
results if a test system is not available. Start adjustment by
setting all switches to "OFF" position. Measure or listen sys-
tematically through the different combinations of settings to
find the best frequency balance. See Table 2 for some typical
settings.
Bass Roll-Off Control
Bass Roll-Off control (switches 1 and 2) attenuates its output
near the cut-off frequency. Attenuation levels of -2 dB (sw.
1 ON), -4 dB (sw. 2 ON) or -6 dB (both switches ON) can be
selected.
Bass Tilt Control
The Bass Tilt control switches (swiches 3 and 4) offer three
attenuation levels for the bass response below 800 Hz, usually
necessary when the monitors are placed near room boundar-
ies. The attenuation levels are -2 dB, -4 dB and -6 dB.
Desktop Low Frequency Control
The desktop low frequency control (switch 5) attenuates the
bass frequencies around 160 Hz by 4 dB. This feature is de-
signed to compensate for the boost often occurring at this
frequency range when the monitor is placed upon a meter
bridge, table or similar reflective surface.
Treble Tilt Control
Treble Tilt control (switches 6 and 7) allows adjusting the tre-
ble response above 5 kHz by +2 dB, -2 dB or -4 dB, which can
be used for correcting an excessively bright or dull sounding
system or to compensate for high frequency level loss if the
monitor is placed behind a screen.
6
Bass Bass Desktop
Tilt Roll-Off
None None None
-2 dB None None
-4 dB None None
-2 dB None -4 dB
-4 dB -4 dB None
Figure 9. Switch Group 2
Functions On Switch Group 2
Stored / Manual Ctrl
"MANUAL CTRL" refers to controlling the monitor using the
controls on the monitor's back panel. The "STORED" refers to
using settings stored inside the memory of the monitor. These
settings are made using the GLM and the GLM Control Net-
work. There is additional functionality compared to that offered
by the room response correction switches on the back panel.
AES/EBU CH
This selects the audio channel(s) available on the AES/EBU
cable to be reproduced by the monitor. Turning both switches
on reproduces the sum of the two channels on the AES/EBU
cable. Turning both switches off mutes the monitor. When two
channels are selected, 6 dB of attenuation is automatically
applied to avoid overloading the monitor.
If the AES/EBU cable is operated in dual-wire mode, the
monitor detects this situation automatically and the channel
selection switches have no effect.
Driver Mute
These two switches allow you to mute the treble driver (mark-
ing "TW") and bass driver (marking "WF") independently. This
may be useful to diagnose if a transducer is faulty. On the
8351A and 8260A the marking "TW" is replaced with "COAX"
and this switch mutes both the treble and midrange of the
coaxial driver unit.
System Lvl
These switches allow scaling down of the monitor output. The
signal sent to the "Thru" output connector is not affected. The
switches are additive, for example, "–30 dB" attenuation is
achieved by turning on the "–10 dB" and "–20 dB" switches.
The effect of these switches is combined with the effect of the
rotary level adjustment control. This results in total possible
attenuation of 42 dB, 30 dB by the system level switches and
another 12 dB by the rotary control.
Using the 7000 Series Analog Subwoofers
with SAM Monitors
Please follow the steps below to integrate an analog subwoof-
er into a system of SAM monitors: