Alpine R-A90S Owner's Manual page 11

Crossover Frequency Adjustment Knob (HP
FREQ.)
Use this control to adjust the crossover
frequency between 50 Hz to 400 Hz.
Crossover Frequency Adjustment Knob (HP-H
FREQ.)
Use this control to adjust the crossover
frequency between 400 Hz to 6 kHz.
Input Channel Selector Switch (CHANNEL-3/4)
Side)
ide)
Crossover Mode Selector Switch
en the
tweeter/
(CHANNEL-3/4)
equency
ides
to 400
the
nuated
Bass EQ
when the
tweeter
equency
ides
z to 6
the
nuated
a) This switch setting is for selecting
either 2-channel or 4-channel input
mode. When set to "1/2", the signal
will be copied from CH-1/2 and
sent to CH-3/4, eliminating the
need for Y-adapters.
b) Setting this switch to "3/4" will keep
both inputs, CH-1/2 and CH-3/4
independent.
A 4-channel source is required for
this mode.
a) Set to the "OFF" position when the
amplifier will be used for driving
full range speakers or when using
an external electronic crossover.
The full frequency bandwidth will
be output to the speakers with no
high or low frequency attenuation.
b) Set to the "HP" position when the
amplifier is used to drive a tweeter/
midrange system.
At this setting, Crossover Frequency
Adjustment Knob ( ) provides
adjustment between 50 Hz to 400
Hz. The frequencies below the
crossover point will be attenuated
at 12 dB/octave.
c) Set to "BP" if the amplifier is used to
drive a midbass or midrange
speaker.
Frequencies lower than the
specified frequency set by
Crossover Frequency Adjustment
Knob ( ), and higher than the
frequency specified set by
Crossover Frequency Adjustment
Knob ( ), are attenuated at 12 dB/
octave.
Crossover Frequency Adjustment Knob (HP/
BP-L FREQ.)
Use this control to adjust the crossover
frequency between 50 Hz to 400 Hz.
NOTE:
• When the Crossover Mode Selector Switch ( )
is set to [BP], adjust the Crossover Frequency
Adjustment Knob ( ) and ( ).
Crossover Frequency Adjustment Knob (BP-H
FREQ.)
Use this control to adjust the crossover
frequency between 400 Hz to 6 kHz.
NOTES:
• When the Crossover Mode Selector Switch ( )
is set to [BP], adjust the Crossover Frequency
Adjustment Knob ( ) and ( ).
• When the Crossover Mode Selector Switch ( )
is set to [HP], adjustment of the Crossover
Frequency Adjustment Knob ( ) is disabled.
Input Channel Selector Switch (CHANNEL-5/6)
a) This switch setting is for selecting
either 2-channel or 4-channel +
Subwoofer input mode. When set
to "1/2", the signal will be copied
from CH-1/2 and sent to CH-5/6,
eliminating the need for Y-adapters.
b) Setting this switch to "5/6" will keep
both inputs, CH-1/2 and CH-5/6
independent.
A 4-channel + Subwoofer source is
required for this mode.
Crossover Mode Selector Switch
(CHANNEL-5/6)
a) Set to the "OFF" position when the
amplifier will be used for driving
full range speakers or when using
an external electronic crossover.
The full frequency bandwidth will
be output to the speakers with no
high or low frequency attenuation.
b) Set to the "LP" position when the
amplifier is used to drive a
subwoofer.
At this setting, Crossover Frequency
Adjustment Knob ( ) provides
adjustment between 50 Hz to 400
Hz. The frequencies above the
crossover point will be attenuated
at 12 dB/octave.
ALPINE R-A90S 68-35792Z94-A (EN/FR/ES)
EN
FR
ES
9
-EN