Nobsound NS-03G User Manual

1. Before turning on the amp, please make sure the volume knob
at the leftmost end, avoid high volume ( high output power )
damaging your speakers.
2. Default OPTIONAL 19V power supply, whose output power is
enough to drive most home speakers. If you buy the version
without power supply or want higher output power, please
prepare high-quality power supply by yourself. Powered by 24V
power supply(4Ω load), the actual output power can reach 100W.
NS-03G 100W Mono Channel
Subwoofer /Full Frequency Power Amplifier
NOTICE
1. Please connect power adapter to NS-03G firstly and then
plug the power cord to the socket.
2. Connect audio device such as TV, CD player to the amp’s
input with high-quality 3.5mm AUX cable, and connect
proper passive speakers or subwoofers to amp’s output.
3. Rotate the volume knob from the leftmost end, the LED
indicator will light up, then you can rotate the volume
knob to get proper volume and enjoy HiFi music.
HOW TO USE
PARAMETERS
1
Model
Version
Number of channel
Audio input
Audio output
Max output power
Power amp chip
Op amp
Speaker impedance
Matched L/R Speakers
Matched subwoofer
Frequency response
Input sensitivity
THD
SNR
Working voltage
Default power supply(optoinal)
Dimensions(W*D*H)
Package dimensions(W*D*H)
Net weight
Package weight
Mono
3.5mm AUX
Banana speaker jacks
100W(24V, 4Ω load)
TPA3116D2
TL072
4Ω-8Ω
≤ 280mV
≤ 0.01% (1KHz)
≥ 118dB
DC 12V-24V(5.5mm / 2.5mm)
19V
69*88*33mm / 2.72*3.46*1.30in
150*150*50mm / 5.91*5.91*1.97in
190g / 0.42lb
310g / 0.68lb
2
NS-03G SUB
Subwoofer
NS-03G FR
Full Frequency
20Hz-20KHz
3-10 inch 10-200W
5-10 inch 30-150W
20Hz-180Hz

Nobsound NS-03G Specifications

General

Product Model	NS-03G
Audio Input	RCA
Impedance	4-8Ω
Output Impedance	4-8Ω
Input Impedance	100kΩ
Input Sensitivity	300mV
Frequency Response	20Hz-20kHz
Power Supply	DC 12V-24V
Power Adapter	DC 12V-24V
Audio Output	Speaker Output
Channel	2 (Stereo)
SNR	> 90dB
Signal-to-Noise Ratio	> 90dB

Summary

Important Notices

Pre-operation Safety Check

Ensure volume knob is at the leftmost end before turning on the amp to avoid damaging speakers.

Power Supply Considerations

Uses 19V supply; 24V can reach 100W at 4Ω. Consider a high-quality supply for higher output.

How to Use

Initial Power Connection

Connect the power adapter to the NS-03G amplifier first, then plug the power cord into the socket.

Audio Source and Speaker Connection

Connect audio devices via AUX cable and passive speakers/subwoofers to the amp's output.

Operation and Volume Adjustment

Turn volume knob from left; LED lights up. Adjust for desired volume and enjoy HiFi music.

Trouble-Shooting Manual

Troubleshooting: Unit Not Starting Up

Addresses issues related to power connection, switch, adapter, or audio source for startup problems.

Troubleshooting: No Sound Output

Covers reasons like incorrect input, mute, shorted output, poor adapter, cables, source, or speakers.

Troubleshooting: Noise Issues

Solutions for noise include checking power adapter, cables, audio source, and matched speakers.

Troubleshooting: Bluetooth Connectivity

Resolves issues with searching, pairing, or interference for Bluetooth connection problems.

Troubleshooting: Distortion and Stability

Addresses distortion from output power and unit stopping due to exceeding rated output or other faults.

Contact Information

Company Contact Details

Provides the company's address, contact person, telephone number, and email for inquiries.