NOORUS D3 Desktop Digital Amplifier User Manual

NOORUS D3 Desktop Digital Amplifier

Introduction

Thank you for purchasing Desktop Digital Amplifier! D3 is a high-performance desktop digital amplifier that supports AUX/Bluetooth/USB/COAX/OPTI input, Maximum output power up to 300Wx2@50V10A(4Ω), We believe that D3 will give You bring HIFI music experience and fun.
Now we recommend first to read this manual for you to correctly use all functions of D3.

Contents List

• D3 host x 1
• AC/DC power adapter x 1
• AC cabe x 1
• User manual x 1
• Antenna x 1

Note : You can download the user manual on http://www.o-noorus- audio.com

Front Panel

1-1 Power switch/main menu/submenu switching: long press to turn on and off; short press to switch to main menu.
Turn the knob to select a submenu or adjust the volume.
1-2 Mute display, double-click the knob button to enter mute, double-click again to exit, or remote control Silent control.
1-3 Input Display：
Bluetooth Input；
OPTI Input；
Analog Input；
USB Input；
COAX Input；

1-4 main menu Display, short press to switch to the main menu, and rotate the knob to select the submenu

Volume : Volume Display, Range 1~60, 1dB step.
INPUT : Audio source input switching.
TREBLE : Treble display, adjustment range -10dB ~ +10dB.
BASS ：Bass display, adjustment range -10dB ~ +10dB.
COLOUR ：Color theme display, 9 themes can be selected.
BRIGHTHESS ：Display brightness 0~4 brightness selectable.

1-5 volume, treble and bass, color, brightness, etc display.
1-6 Infrared receiving window.

Rear Panel

2-1 Subwoofer output
2-2 Coaxial source input
2-3 Bluetooth antenna
2-4 Optical fiber input
2-5 USB source input
2-6 AUX analog input
2-7 Right channel output positive .
2-9 Right channel output negative.
2-8 Left channel output positive.
2-10 Left channel output negative.
2-11 Power input: DC24V~50V input.

Specification

Parameter

THD+N
@1kHz| <0.033%@4Ω 5W| <0.034%@4Ω 5W| <0.045%@4Ω 5W
<0.045%@8Ω 5W| <0.0450%@8Ω 5W| <0.055%@8Ω 5W
THD
@20~10kHz| <0.040%@4Ω 5W| <0.045%@4Ω 5W| <0.05%@4Ω 5W
<0.055%@8Ω 5W| <0.050%@8Ω 5W| <0.065%@8Ω 5W
SNR
@MAXOUT 1KHZ| 99dB| 101dB| 103dB
Dynamic@1kHz| 102dB| 105dB| 102dB
Noise| <255uVrms| <273uVrms| <273uVrms
channel Crosstalk
@1kHz| -96dB| -96dB| -90dB
Input sensitivity| 1.72Vrms| 0.92Vrms| 0.87Vrms
Gain| 30dB| 28dB| 30dB
channel balance| 0.5dB| 0.5dB| 0.5dB
Frequency Response| 20Hz~40khz| 20Hz~40khz| 20Hz~40khz
Adaptation Impedance| 4~8Ω| 4~8Ω| 4~8Ω
Output Power| 300W x 2 @4Ω 50V10A THD+N<10%
200W x 2 @8Ω 50V10A THD+N<10%
200W x 2 @4Ω 36V10A THD+N<10%
130W x 2 @8Ω 36V10A THD+N<10%

Wiring Instructions

Wiring instructions D3 has five signal inputs, which can be switched through the buttons on the front panel or the remote control.

Attention : The connection between D3 and the speaker must be correct.
L + to the red jack(+ in) of the left speaker, L- to the black jack(-in)ofthe left speaker. Connection to the right channel is the same. Please ensure that step is correct before proceeding to the next step.
D3 is a amplifier with PBTL output, the L- /R- jack are separate, they are not connected to the ground or a same point. So if you make a mistake at this step, maybe it will cause serious damage to .Warranty is void when user’s D3 error connection led to a damage.

Troubleshooting

Is the adapter light on
Signal input selection error| Toggle the signal selection switch
The audio cable is not connected properly| check and reconnect it
Mute the source device| Unmute the source device
The positive and negative are reversed| check and correct
Poor contact of output wire| Reconnect the output wire
Poor contact of input line| Reconnect the input cable
Amplifier output overload| Turn the potentiometer audio down

Precautions For Daily Use

1. Any connections must refer to this user manual.
2. Ensure the output jack, including speaker L+, L-, R+,R- do not short circuit or connect to ground.
3. Whether you need to connect or disconnect a cable, please turn off D3 first.
4. To cut the power of AC adapter, please turn off D3 first, then pull out the power cable or cut the power of adapter.
5. You must not keep the amplifier in a hot, humid environment or drop it.
6. Opening the case instantly voids the warranty!
7. In case where liquid is spilled into the machine, turn off the power immediately and check the device inspected by a professional before further use.
8. Use o-noorus AC adapter only.
9. Maintain the volume so no distortion will have much better listening experience
10. Indoor use only.

About the weak current feeling on the aluminum case

In some very special case, some people could feel very weak current on the aluminum case.The reason for this phenomenon is due to the electro magnetic interference suppression component in AC adapter which builta necessary circuit between the primary and secondary This weak current is controlled strictly within the limits of security standards required of, and the production of this product in the factory have passed the strict quality inspection, so you can feel free to use it.

Warranty

1. Warranty Terms
   The term of service O-NOORUS (Shen zhen) Technology Co., Ltd. promises good quality products. lf the product is defective by normal use within 7 days after purchasing, the customer can chose to send it back for returning or repairing (only the product does not affect the secondary sales can be returned).Faulty for free within one year warranty normal use.

2. Date of purchase is in accordance with the date on invoice or receipt uesd by seller online shopping can show the screenshot of trade.

3. Following situation can not enjoy “Three Guarantees service”
   a.All damages by human factors,including use it under non-normal working environment the and not follow manual instructions.
   b.User privately disassemble, modification, maintenance.
   c.Use non-designated or approved accessories cause damage
   d.QC or warranty stickers damage on cabinet.
   e.Can not provide a valid purchasing prove.
   f. Not belong to o-noorus product.

4. How to quarantine These terms only suitable for China mainland,other region please refer to the policy of the local sales agents and nations.

Audio Wiring Method

Bare wire length

1. Rotary screw cap.

2. Side insert speaker cable

3. lock the speaker cable

Bare wire is too long cause a short-circuit

[Correct] Using the Banana plugs

FCC Warning

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help

Caution : Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

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