7
Operating Manual - nX, nXe, and nXp Power Amplifiers
2 nX INSTALLATION REQUIREMENTS
Before connecting to mains power, make sure that the mechanical installation, cooling requirements, wiring, controls,
and software are all set to the configuration needed for your particular application. Failure to do so could result in damage to
the unit or other components in the system.
2.1 AC Mains Voltage, Power, and Current Requirements
This amplifier will auto-detect mains voltage at either 120VAC or 240VAC. At nominal 120VAC mains, the allowed
operating range is 70VAC to 135VAC to allow for brownouts or power surges, and for 240VAC the operating range is 140VAC
to 270VAC. Use only the provided AC cord or equivalent to connect to AC mains. Programmable Power-On Delay is available
on nXe and nXp series amplifiers. All nX models have a fixed, non-defeatable warm-up delay of about three seconds to protect
against excessive in-rush current when first powered up or when waking from sleep. The model number and power consumption
are indicated on the back panel label placed above the AC inlet. To reduce the risk of ground loop hum, all sound system ground
references should originate at the same AC power distribution point.
Do not lift or remove the amplifier power cord ground pin.
AC Mains Connector Types -
The following table shows the AC mains plug type supplied with each nX amplifier
model, as well as the required receptacle. A detachable 20A Neutrik PowerCON
®
mains chassis connector is installed on all
models except for nX 3.04, which uses a 30A PowerCON
®
.
nX 1.52
nX 1.54
nX 3.02
nX 3.04
120V Plug/Receptacle
Nema 5-15
Nema 5-20
Nema 5-20
Nema L5-30 (locking)
240V Plug/Receptacle
Schuko 16A
Schuko 16A
Schuko 16A
Schuko 16A
Total Mains Power Draw and Maximum Current Draw
- Total AC power consumption and maximum
120VAC current draw are shown below, measured at 1/8th maximum output power under typical amplifier status and load condi-
tions, all channels driven using typical audio signal. For 240V current, divide 120V values in half.
Total Power Draw
(Maximum Current@120V)
nX 1.52
nX 1.54
nX 3.02
nX 3.04
Sleep
<1W (100mA)
<1W (100mA)
<1W (100mA)
<1W (100mA)
Standby
40W (0.70A)
70W (1.30A)
40W (0.70A)
70W (1.30A)
Idle (no input signal)
55W (1.0A)
100W (1.85A)
55W (1.0A)
100W (1.85A)
1/8th Max Power
@70V
625W (8.0A)
1250W (16.0A)
940W (12.1A)
1880W (24.1A)
1/8th Max Power
@100V
520W (6.7A)
1040W (13.4A)
520W (6.7A)
1040W (13.4A)
1/8th Max Power
@8 Ohm
520W (6.7A)
1040W (13.4A)
520W (6.7A)
1040W (13.4A)
1/8th Max Power
@4 Ohm
625W (8.0A)
1250W (16.0A)
770W (9.9A)
1540W (19.7A)
1/8th Max Power
@2 Ohm
625W (8.0A)
1250W (16.0A)
1150W (14.7A)
2300W (29.5A)
