55
Operating Manual - nX, nXe, and nXp Power Amplifiers
Distortion (SMPTE, typical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<0.5%
Distortion (THD-N, typical)
(8 Ohm, 10dB below rated power, 20Hz-20kHz) . . . . . . . . . . . .<0.5%
Signal to Noise (26dB input sensitivity, 20Hz-20kHz, unweighted) . . .>114dB (3.0x models), >111dB (1.5x models)
>108dB (800x models), >105dB (400x models)
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Hz-20kHz, +/-0.05dB
Channel Separation (dB from full output, 1kHz). . . . . . . . . . . . . .-75dB
Damping Factor (8 Ohm load, <1kHz) . . . . . . . . . . . . . . . . . . . . .>250
Balanced Input Connector (per channel) . . . . . . . . . . . . . . . . . . . .Euroblock (3.5mm), 1/4" TRS and XLR Combo jack
Input Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10k Ohm
Maximum Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+21dBu
Bridge Mode Switch (per channel pair). . . . . . . . . . . . . . . . . . . . .In for bridged mode, Out for stereo
Remote DC Level Control (G, CV, V+ per channel). . . . . . . . . . .Euroblock (3.5mm), V+ is fully on, G is fully attenuated
DIP Switch settings (per channel)
Switches 1-2: Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Low Z, 70V, 100V output
Switches 3-4: Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26dB, 32dB, 38dB, 1.4V
Switch 5: Output Clip Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . .On, Off
Switch 6: Input High Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . .80Hz 2nd order HPF - On, Off
Speaker Output Connector (per channel). . . . . . . . . . . . . . . . . . . .Neutrik SpeakON
®
NL4MD-H-2
nXe and nXp Models Only:
Control Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100MB Ethernet, RJ-45 connector
Remote Standby Contact Closure . . . . . . . . . . . . . . . . . . . . . . . . .Euroblock (3.5mm) - close contact pin to G for standby mode
Fault Logic Output (per channel). . . . . . . . . . . . . . . . . . . . . . . . . .Euroblock (3.5mm) - fault indicated by loss of 1Hz, 5V pulse signal
Fault Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AC mains voltage, excessive internal temperature, power supply
voltage out of range, DC on output, microprocessor malfunction
(+5V and G pins available for logic sink and source)
Maximum Fault Pin Source Current. . . . . . . . . . . . . . . . . . . . . .20mA
Maximum Fault Pin Sink Current. . . . . . . . . . . . . . . . . . . . . . . .200mA
Preset Recall Contact Closure . . . . . . . . . . . . . . . . . . . . . . . . . . . .Euroblock (3.5mm) - close contact to GND for preset 1-4 recall
Data Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Euroblock (3.5mm) - Gnd, +18V, Data Out, Data In
AUX Output Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Balanced Euroblock (3.5mm)
AUX Output on two channel models. . . . . . . . . . . . . . . . . . . . . .AUX A & B use amp ch 1-2 signal,
or
use matrix mixer if DSP installed
AUX Outputs on four channel models. . . . . . . . . . . . . . . . . . . . .AUX A, B, C, D use amp ch 1-4 signal, post DSP if installed
AUX Output Maximum Level . . . . . . . . . . . . . . . . . . . . . . . . . . .+21dBu
Network Audio Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dante, Cobranet (factory installed only)
Digital I/O Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .AES3, two or four channel with zero-latency pass-through
Front Panel Indicators
Power Switch LED (white) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On, Off, Standby (flashing)
Clip/Mute LED (red) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per Channel - Clip @ 1dB below full output, Mute
Signal LED (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per Channel - -18dB below rated output
Current LED (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per Channel - Brightness is proportional to output current
Temp LED (yellow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per Channel - On dim at 90% of maximum operating temperature
On full bright at 100% maximum operating temp, + protect
Bridge LED (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per Channel Pair - On, Off
Protect LED (red). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On for fault condition countermeasures or shut-down, Off
(See Troubleshooting section for Protect LED error codes)
Sleep LED (blue) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On when amp is asleep, on briefly when sleep mode is enabled
Disable LED (yellow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On when front panel controls are disabled, Off
Com LED (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On for Ethernet activity or displaying Device ID
Attenuators
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Per channel: front panel, software,
offset link group, and remote control.
Fully off = Mute
Amplifier Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .In-rush current, over-temperature, output DC,
output over-power, AC mains voltage, mains fuses
