Norden NVS-20231602AM 2 Channel Professional Amplifier

Product Overview

Description

The NVS-20231602AM is a two-channel stereo professional power amplifier with low distortion and high efficiency. It is equipped with reliable protection of overvoltage, under-voltage, DC, short circuit, and alarming functions. BTL connection is available. It is suitable for conference systems, meeting rooms, and live performances.

Features

• Two-channel stereo professional power amplifier
• Individual volume control for each channel
• Equipped with stereo, parallel, and BTL bridge three operating mode options for the choice of working mode switch selection
• Equipped with short circuit protection, DC protection, power off, and a variety of protection and alarm functions
• Each channel is equipped with LED working status indication, low noise design
• Equipped with XLR signal input interface (female base) and XLR signal output interface (male base)

Appearance Description

Front Panel

The front panel features:

• CH-1 Input Level Adjustment Knob
• Power Switch
• CH-2 Input Level Adjustment Knob
• Work Status Indicator Light

Operational Status Indicators:

• PRO (Protection Status - Yellow): Indicates a protection condition in CH-1 or CH-2. This LED illuminates during the initial 3-5 seconds of power-on or just after power-off while the amplifier circuitry stabilizes, when internal component temperatures exceed 90°C, or in the event of a general amplifier fault.
• CLIP (Clipping Indicator - Red): Indicates signal clipping or abnormal output conditions. When the output signal amplitude nears the maximum power limit, it indicates potential distortion. Reduce input level to prevent signal degradation. If a signal is present but there is no audio output and the indicator remains lit, a short circuit at the speaker load is suspected. Power down the amplifier, correct the fault, and restart operation.
• SIG (Signal Presence Indicator - Red): Illuminates when a valid output signal is detected on CH-1 or CH-2, confirming normal amplifier operation.
• BRI (Bridge Mode Indicator - Green): Indicates that the amplifier is operating in Bridge Mode. In this configuration, input is accepted only via CH-1, and output is bridged across both channels.
• STR (Stereo Mode Indicator - Green): Indicates that the amplifier is operating in Stereo Mode, with independent input and output for each channel.
• PAR (Parallel Mode Indicator - Green): Indicates that the amplifier is operating in Parallel Mode. In this mode, the input signal from CH-1 is simultaneously fed to both amplifier channels.

Rear Panel

The rear panel includes:

• CH-1/CH-2 Input Connector: Standard XLR (3-pin female) connectors. Pin 1: Ground (Shield), Pin 2: Hot (+, Non-inverting Signal), Pin 3: Cold (-, Inverting Signal).
• CH-1/CH-2 Signal Link Output Connector: Standard XLR (3-pin male) connectors for daisy-chaining. Wiring configuration: Pin 1: Ground (Shield), Pin 2: Hot (+, Non-inverting Signal), Pin 3: Cold (-, Inverting Signal).
• CH-1/CH-2 Limiter Switch: Activates the integrated output limiter on each channel to prevent distortion and protect speakers.
• CH-1/CH-2 35Hz High-Pass Filter: Attenuates frequencies below 35Hz to protect low-frequency transducers from excessive excursion and mechanical damage due to subsonic content.
• Operation Mode Selector Switch: Selects the amplifier's working configuration: Stereo Mode, Bridge Mode, or Parallel Mode.
• CH-1/CH-2 Subharmonic Enhancer (Bass Exciter): Adjusts the intensity of artificially generated low-frequency content. Use with caution as excessive enhancement may damage speakers.
• CH-1/CH-2 SPEAKON Output Connector: Professional-grade SPEAKON connectors for speaker output. Wiring: 1+: Positive terminal, 1-: Negative terminal, 2+/2-: Additional signal paths.
• Amplifier Output Binding Posts: Provides alternative speaker connection via binding posts or banana plugs.
• Resettable Circuit Breaker: Automatically disconnects power in case of malfunction or overload. Press to restore operation after resolving the issue.
• AC Mains Power Inlet: Standard IEC power socket for AC mains power supply. Use only properly rated power cables.
• Cooling Exhaust Vent: Forced-air cooling outlet for heat dissipation. Do not obstruct the vent to maintain adequate airflow and prevent overheating.

Specifications

Safety Precautions

CAUTION

• When the power switch is “OFF”, the machine is not completely disconnected from the power grid.
• For safety, pull the power cord plug out of the socket when not using the equipment.
• The equipment shall not be subject to water drops or splashes, and objects filled with water shall not be placed on the equipment.
• To reduce the risk of electric shock, do not remove the cover. If necessary, please ask professional personnel to repair.
• The symbol on the rear panel indicates hazardous live. Connection of these terminals must be operated by instructed personnel.
• The equipment is connected to the power grid through the power cord plug. In case of equipment failure or danger, disconnect by pulling out the power cord plug.
• Place the power socket in a position where the power cord can be conveniently plugged and unplugged.

Technical Description

• When the power switch is in the "OFF" position, the unit remains electrically connected to the AC mains supply.
• For safety purposes, always disconnect the AC power cord from the outlet when the equipment is not in operation.
• This equipment must not be exposed to liquid ingress (e.g., dripping or splashing). Do not place liquid-filled containers (such as vases) on or near the unit.
• To prevent electrical shock, do not remove the unit's cover. All servicing should be carried out by qualified technical personnel.
• The rear panel contains a hazardous voltage warning symbol, indicating terminals with live electrical potential. These connections must only be handled by authorized or trained personnel.
• The device is powered via a detachable mains power cord. In the event of a fault or hazard, the mains supply can be fully disconnected by unplugging the power cord.
• Ensure the AC outlet is installed in an accessible location so the power cord can be easily connected or disconnected in an emergency.