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Lambda Labs - Professional Acoustics
4.2. Introducing KW-18 Amplifier Back Panel
4.2 Figure 1: Back Panel Overview (Delivery Sate)
PART
DESCRIPTION of 4.2 Figure 1
a)
Power Connection
The KW-18 provides 3 x 20 Ampere Neutrik PowerCON Connectors to power the
KW-18 amplifier. To ensure the full output power capability, the amplifier needs
to run with all 3 connectors connected and powered using 16A Type "C" Circuit
Breakers. In the case of lower power use it could be operated however using only
two of the Neutrik Powercon connectors and as such, powered from only 2x 16A
Type "C" Circuit Breakers.
NOTE: The Unit can not start when only one of the Powercon connectors is used!
NOTE: The KW-18 can only work from voltages of 90V AC – 255V AC 50-60Hz!
Operation from DC Voltage is not possible! An input voltage higher than 255V
AC RMS is not permitted and might cause damage to the KW-18!
Loudspeaker Output Connection
b)
The KW-18 provides 4 x Neutrik SpeakON NL4 type Connectors to power the
corresponding loudspeakers. All 4 connectors use +1 as „+" and -1 as „-" output
for the corresponding channel.
NOTE: +2 and -2 pins are not used! The Loudspeaker connectors used on KW-18
are fully compatible with both Neutrik Speakon NL4 and NL2 type plugs!
Audio Input Connection
c)
The KW-18 provides 4 x standard XLR 3 pin connectors to connect an audio
signal. KW-18 uses the new international standard Pinout for the XLR connectors:
The symmetrical audio inputs have 10kOhm impedance, when the channel input
signal attenuator (input level knob) is at its minimum position (counter-clockwise).
The input impedance with the attenuator at its maximum position (clockwise) is
20kOhms.
d)
Ethernet Connection
The KW-18 provides IN/OUT Ethernet connectors, reserved for the upcoming built-
in DSP. Currently not used.
www.lambda-labs.com
a)
Pin1: Shield
Pin2: signal + (hot)
b)
Pin3: Signal- (cold)
! 1 0
KW-18 Amplifier Manual
c)
d)
REFERENCE
Chapter 5.1
Chapter 5.2
Chapter 5.3
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