DSR112/DSR115/DSR215/DSR118W Owner’s Manual
7
Controls and Functions
English
Controls and Functions
Rear panel
1
INPUT jacks
These are balanced XLR and phone input jacks.
The DSR118W has XLR jacks (L, R) only.
NOTE
You may use either the XLR or the phone jack, but not both types si-
multaneously. Please connect to only one of these jacks.
2
THRU jack(s)
These are balanced XLR output jack(s). Input signals will be
passed through unaffected, since these are parallel con-
nected to the INPUT jacks.
3
PEAK Indicator
Lights red when the input level reaches 3dB below clipping.
If the PEAK indicator frequently lights, adjust the volume of the in-
put source so that the PEAK indicator flashes briefly on the highest
input levels.
4
LEVEL control
Adjusts the overall output level. Set the MIC/LINE switch (
5
)
of the DSR112, DSR115 and DSR215 to LINE when connect-
ing a device (such as a mixer) whose specified output level
is +4dBu. In this condition, set the LEVEL control to roughly a
12:00 position to obtain sufficient output.
5
MIC/LINE switch (DSR112/DSR115/DSR215)
Set this switch to MIC or LINE for INPUT jacks, depending on
the level of the input signal. For low-level signals (such as mi-
crophones), set the switch to the MIC (
O
) position. For high-
level signals (such as electronic musical instruments and au-
dio equipment), set the switch to the LINE (
N
) position.
6
POLARITY switch (DSR118W)
Selects the subwoofer polarity. You will usually set this switch
to NORMAL (
N
). However, an INVERTED (
O
) setting may
improve low-range response, depending on the type and lo-
cation of the speaker system. Try both settings and select the
one that produces the best low-end sound.
7
LIMIT indicator
Lights when the output limiter is active. The output limiter will
operate in the following situations, attenuating the output sig-
nals to the amplifier.
• If the output voltage of the amplifier has exceeded the
maximum value
• If excessive integral power consumption is detected
• If the amplifier overheats
NOTE
•
The integral power consumption refers to the sum of power con-
sumption provided to the speaker driver per unit time.
•
(DSR112/DSR115/DSR215) If the output voltage of the amplifier has
exceeded the maximum value, or if excessive integral power con-
sumption is detected, the LIMIT indicator will light when the amount
of attenuation is 3dB or higher.
8
PROTECTION indicator
Lights when the protection system is active. The protection
system will operate in the following situations.
NOTE
If the protection system has engaged after the problem was de-
tected, waiting until the amplifier cools down or powering off and on
again will return to normal operation. If the unit does not return to
normal operation, please contact your Yamaha dealer.
•
If amplifier overheating is detected:
The speaker output will be muted.
•
If DC output is detected:
After the indicator lights, the speaker output will be muted,
and the power supply section will be shut down.
•
If overcurrent is detected:
The speaker output will be muted.
•
When turning the power on:
Lights for about two seconds when the power supply starts.
The indicator turns off when the power supply has started nor-
mally.
•
When turning the power off:
If the power switch is set to off, or if the power turns off by an
unexpected error, the protection system will shut the device
down to prevent noise.
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DSR112 / DSR115 / DSR215
DSR118W
