Yamaha XS250 - Manual (Page 5)

5
■ Rear Panel
B-2 CHANNEL A-2
8-16 Ω (BRIDGE)
(–) (+)
4-8 Ω /CHANNEL (STEREO)
B-1 CHANNEL A-1
8-16 Ω (BRIDGE)
(–)
– – + +
(+)
4-8 Ω /CHANNEL (STEREO)
(BRIDGE)
(PARALLEL)
(BRIDGE)
(PARALLEL)
FILTER
CHANNEL B CHANNEL A
FREQ. FREQ.
INPUT
CHANNEL B CHANNEL A
INPUT
CHANNEL B CHANNEL A
SPEAKERS
G G
MODE
CHANNEL B CHANNEL A
STEREO PARALLEL
BRIDGE
OFF
LOW CUT
SUB WOOFER
OFF
LOW CUT
SUB WOOFER
20 15
10
6
3
0 –dB 00
40
30
25
90
125
150 Hz 25
50
90
125
150 Hz 25
50
20 15
10
6
3
0 –dB 00
40
30
25
– – + +
6
3 4 2 1
5
2
Volume controls (CHANNEL A, B)
These knobs enable you to adjust the output level of
Channels A and B in the range between –
∞
dB and
0 dB. In BRIDGE mode, only the volume control for
Channel A is available.
3 STEREO/BRIDGE/PARALLEL switch
This slide switch is used to set the amplifier operating
mode: STEREO, BRIDGE or PARALLEL.
STEREO PARALLEL
BRIDGE
• STEREO mode
In this mode, channels A and B operate independently
(as a conventional stereo amp).
The CHANNEL A input signal will be output from
the CHANNEL A output jacks, and the CHANNEL B
input signal will be output from the CHANNEL B
output jacks.
• BRIDGE mode
In this mode, the CHANNEL A input signal will be
output from the BRIDGE output jacks. In this case,
use the rear panel CHANNEL A volume control to
adjust the volume.
• PARALLEL mode
In this mode, the CHANNEL A input signal will be
output from the output jacks of both channels A and
B. The CHANNEL B input jack is not used. The
CHANNEL A and B volumes can be adjusted
independently.
1
Frequency controls/Filter select switches (CHAN-
NEL A, B)
These knobs and sliding switches are used to select a
filter type and control the cut-off frequencies respec-
tively. You can select one of the following filter type:
OFF
LOW CUT
SUB WOOFER
OFF ........................ Turns the filter off.
SUB WOOFER ...... Turns the low pass filter on.
(The cut-off frequencies for
the low pass filter are fixed.)
This setting is suitable when
using the unit as an amplifier
for a subwoofer.
LOW CUT .............. Turns the high pass (low cut)
filter on. (The cut-off frequen-
cies are variable.)
If you select “LOW CUT,” you can use the frequency
controls to adjust the cut-off frequencies in the range
of 25 Hz to 150 Hz.
FREQ.
90
125
150
Hz
25
50
Note: In BRIDGE mode, only the frequency control
and filter select switch for Channel A are available.