Behringer KM750 Quick Start Guide - Page 7

Step 2: Controls - professional

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12 KM1700/KM750 KM1700/KM750 Controls (EN) Step 2: Controls (1) PROTECTION LED lights when the amplifier goes into thermal protection mode to cope with temperatures over 90°, or if the amplifier's functioning has become unstable. (12) TWIST- LOCKING SPEAKER OUTPUTS connect the amplifier to the speakers using professional speaker cables with twist-locking plugs. (2) SIG LED lights to indicate that a signal is present at the LED's respective channel input. (3) CLIP LED lights when the output signal exceeds the amplifier's clean headroom capacity. In normal operation, the CLIP LED may light from time to time, but should never light continuously. If the CLIP LED lights continuously, turn down the output level. (4) BRID LED lights to indicate that the amplifier's rear MODE switch has been set to BRIDGE mode. (5) POWER LED lights to indicate that the amplifier is powered on. (6) MONO LED lights to indicate that the amplifier's rear MODE switch has been set to (13) BINDING POST outputs accept bare wire connections from speaker cables. MONO mode. (14) GROUND LIFT switch can be used to (7) CH A/CH B CONTROLS adjust the input level. To increase signal gain, rotate the knobs clockwise; to reduce the gain, rotate the knobs counter-clockwise. eliminate humming caused by ground loops. When placed in the LIFT setting, the switch breaks the electrical connection between the shield/ground of the input signal and the power amp housing to eliminate (8) POWER switch turns the unit off and on. ground loops. In normal operation, set the (9) RACK EARS secure the unit into a rack using switch to the GND position. four attaching screws and washers (fasteners (15) LIMITER switch activates the internal limiter. not included). Requires two rack units. (16) MODE switch selects between MONO, STEREO, (10) VOLTAGE SELECTOR lets you match and BRIDGE operation modes. the amplifier to the local power system. Please ensure this switch corresponds to the actual power voltage available in your area. If in doubt, consult an electrician. (11) POWER SOURCE jack accepts the included IEC power cable. 2 2 2 13 Quick Start Guide (17) SENSITIVITY switch adjusts the input sensitivity versus the amplifier's rated output power. Choose between 0.77 V, 26 dB and 1.4 V settings. If using multiple KM amps, choose the 26 dB setting for equal output from all amplifiers. (18) INPUTS accept line-level input signals using balanced XLR, balanced ¼" TRS, or unbalanced ¼" TS connectors. (19) RCA INPUTS (KM750 only) accept unbalanced line-level signals using RCA connectors. (20) BREAKER (automated fuse, KM1700 only). After eliminating the cause of faulty operation, simply depress the BREAKER and power up the unit again. The BREAKER acts in place of common discardable fuses. BREAKER WARNING: Take the following actions BEFORE resetting the breaker: • Unplug the AC main cable • Move the POWER switch to the "OFF" position • Turn all input gain control elements down • And then, reset the breaker, connect the unit to the mains, switch ON and slowly increase the gain to the target volume

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12
13
KM1700/KM750
Quick Start Guide
KM1700/KM750 Controls
(EN)
Step 2: Controls
(1)
PROTECTION
LED lights when the amplifier
goes into thermal protection mode to
cope with temperatures over 90°, or if the
amplifier’s functioning has become unstable.
(2)
SIG
LED lights to indicate that a signal is
present at the LED’s respective channel input.
(3)
CLIP
LED lights when the output
signal exceeds the amplifier’s clean
headroom capacity. In normal operation,
the CLIP LED may light from time to time,
but should never light continuously. If the
CLIP LED lights continuously, turn down the
output level.
(4)
BRID
LED lights to indicate that the
amplifier’s rear MODE switch has been set to
BRIDGE mode.
(5)
POWER
LED lights to indicate that the
amplifier is powered on.
(6)
MONO
LED lights to indicate that the
amplifier’s rear MODE switch has been set to
MONO mode.
(7)
CH A/CH B CONTROLS
adjust the
input level. To increase signal gain, rotate the
knobs clockwise; to reduce the gain, rotate the
knobs counter-clockwise.
(8)
POWER
switch turns the unit off
and on.
(9)
RACK EARS
secure the unit into a rack using
four attaching screws and washers (fasteners
not included). Requires two rack units.
(10)
VOLTAGE SELECTOR
lets you match
the amplifier to the local power system.
Please ensure this switch corresponds to the
actual power voltage available in your area.
If in doubt, consult an electrician.
(11)
POWER SOURCE
jack accepts the included IEC
power cable.
(12)
TWIST- LOCKING SPEAKER OUTPUTS
connect the amplifier to the speakers using
professional speaker cables with
twist-locking plugs.
(13)
BINDING POST
outputs accept bare wire
connections from speaker cables.
(14)
GROUND LIFT
switch can be used to
eliminate humming caused by ground loops.
When placed in the LIFT setting, the switch
breaks the electrical connection between
the shield/ground of the input signal
and the power amp housing to eliminate
ground loops. In normal operation, set the
switch to the GND position.
(15)
LIMITER
switch activates the internal limiter.
(16)
MODE
switch selects between MONO, STEREO,
and BRIDGE operation modes.
2
2
2
(17)
SENSITIVITY
switch adjusts the input
sensitivity versus the amplifier’s rated
output power. Choose between 0.77 V,
26 dB and 1.4 V settings. If using multiple
KM amps, choose the 26 dB setting for equal
output from all amplifiers.
(18)
INPUTS
accept line-level input signals
using balanced XLR, balanced ¼" TRS,
or unbalanced ¼" TS connectors.
(19)
RCA INPUTS
(KM750 only) accept
unbalanced line-level signals using
RCA connectors.
(20)
BREAKER
(automated fuse,
KM1700 only). After eliminating the cause
of faulty operation, simply depress the
BREAKER and power up the unit again.
The BREAKER acts in place of common
discardable fuses.
BREAKER WARNING:
Take the following actions
BEFORE resetting the breaker:
•
Unplug the AC main cable
•
Move the POWER switch to the “OFF” position
•
Turn all input gain control elements down
•
And then, reset the breaker, connect the unit to
the mains, switch ON and slowly increase the
gain to the target volume