Norden NVS-90170061MA User manual

NVS-90170061MA / NVS-90180121MA /

NVS-90010251MA / NVS-90190351MA

10 Input Mixer Amplifier with Equalizer

User Manual

Thank you for using our public address system. Please read this User Manual

carefully to make better use of this equipment

Attention

This equipment is not waterproof. To prevent fire or electric shock, please do

not place any liquid filled containers (such as vases or flowerpots) near the

equipment or expose the equipment to dripping, splashes, rain, or moisture.

Please hold the plug when moving the power cord. Do not pull the power cord

when pulling out the power plug. Do not touch the power cord when your hands

the device, please be sure to place it on a horizontal and stable surface.

Please keep this User Manual in good custody for future use.

Contents

1. General Description.........................................................................................3

1.1 Power Amplifier of PA Conference System.........................................3

1.2 Performance Features.........................................................................3

2. Brief Description of Product............................................................................4

2.1 Description of Front Panel...................................................................4

2.2 Description of Rear Panel....................................................................6

3. Operating Instructions.....................................................................................7

3.1 System Connection Diagram…………….................................................7

3.2 Connection Diagram of Speaker………………………………………………………8

3.3 Equalizer Adjustment……………………....................................................9

3.4 Selection of Channel…………………........................................................9

3.5 Volume Control…………………….............................................................9

3.6 Microphone and Priority Function.....................................................10

4．Safety Precautions…………............................................................................10

4.1 Precautions for Safety Operation......................................................10

4.2 Matters Requiring Attention……….....................................................11

5. Performance Specifications...........................................................................12

1.General Description

1.1 Power Amplifier of PA Conference System

NVS Mixer amplifiers are a type of Public Address conference equipment’s that

integrate the equalizing function, frequency shift function, front, and backstage

amplification function. The products provide 4 audio source input ports, 6 microphone

input ports, a line output port and 4 power amplifier’s output terminals, etc. Among

them, you can select one audio input from 4 channel audio input ports and control its

volume. The volume of the 6 microphones can be controlled independently. A master-

volume control is provided for controlling the total output volume. The 7-band

equalizers (EQ) have been provided to adjust the output. The shifted frequency of

microphones is 0-5Hz higher than the original frequency.

These products have rated voltage outputs of 100 V, 70 V, and rated resistance

outputs of 4 Ω, 8 Ω, 16 Ω. They are split into separate kinds of models like, 60W (NVS-

90170061MA), 120W (NVS-90180121MA), 250W (NVS-90010251MA) and 350W (NVS-

90190351MA). The products are designed according to the requirements of the

conference hall having no whistle, with the tone loud and clear and the volume

adjustable. The products provide with multiple protection, well-found function and

with the stable operating state and can meet the requirements of conference site for

the sound amplification and the background music.

1.2 Performance Features

•Suitable and reliable operation mode with integrated functional design.

•4-line inputs, a line output, 6 microphone inputs (balanced with 24V phantom

power supply).

•4 number of audio source channels can be selected automatically by their

priority level.

•Mute function, easy to override the normal playing.

•Microphone frequency shift function, and the range of shifted frequency can

be adjusted.

•Built-in chime generator, and adjustable chime output volume.

•The volume of microphones and the audio source channels can be controlled

independently.

•Master controller to control the total volume.

•7-band equalizer, and the adjustment is convenient.

•With 100 V and 70 V rated voltage output, 4-16 Ω rated resistance output.

2. Brief Description of Product

2.1 Description of Front Panel

(1) Power switch and power indicator

Press down the power switch button to turn on the power, and the power

indicator is lit when the power is turned on; If press down the power switch button

again to pop up the switch, the power is turned off, and the power indicator is

distinguished when the power is turned off.

(2) 7-band equalizer adjustment slider

With the slider sliding up to increase the gain of frequency band and sliding

down to attenuate the gain of frequency band.

(3) Microphone 6 volume adjustment knob