User Manual
使用說明書
A
5
0
USB Audio Interface
USB
音頻介面
3
A50
INTRODUCTION .......................................................................... 18
KEY FEATURES ............................................................................ 19
PARTS NAME AND FUNCTION ........................................................ 20
CONNECTION ............................................................................... 22
PC ASIO DRIVER INSTALLATION...................................................... 24
M A C A S I O D R I V E R I N S TA L L AT I O N ......................................... 26
VOXOA A50 CONTROL PANEL......................................................... 28
SPECIFICATIONS .......................................................................... 30
產品簡介
..................................................................................... 04
產品特色
..................................................................................... 05
部件名稱與功能
........................................................................... 06
連接方式
..................................................................................... 08
PC ASIO
驅動程序安裝
................................................................ 10
MAC ASIO
驅動程序安裝
............................................................ 12
VOXOA A50
控制面板
............................................................... 14
規格
............................................................................................ 16
Contents
ENGLISH
中文
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18
The VOXOA A50 is a portable, robust and professional USB audio interface for every
audio computer user and A50 provides a great way to convert any analog signal into
digital files. Besides standard recording and playback functionalities the A50 provides
everything that is needed for professional music production.
In its compact and full metal case, the A50 provide 2 stereo analog input (Line/Phono)
and 2 stereo analog output channels with RCA connector. It is a great tool for every DJ
who owns a MIDI controller without a built-in soundcard or wants to have better sound
quqlity.
The 2 stereo inputs are independent switchable for LINE or PHONO. It has especially
been designed for DJs for an easy set up of DVS and the stereo headphone output.
MIC In and headphones monitor are designed with independent knobs for easy
control. Moreover the high output level (9,7dBu or 2,4VRMS) is able to drive a powerful
amplifying uni
t.
INTRODUCTION
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19
A50
KEY FEATURES
‧ 4 In/4 Out (Mono) Professional USB audio interface
‧ All input channels switchable from Line level to Phono level
‧ ASIO drivers for extremely low latency periods
‧ Grounding screw for turntable connection
‧ 7 signal LEDs for inputs and outputs and USB connection
‧ Microphone input with gain controller on the interface (6.3mm jack)
‧ Headphones/master record output with large gain controller on the interface
(6.3mm jack)
‧ Universal phono/line inputs
‧ Especially compact, robust and full metal chassis
‧ Cirrus Logic® AD/DA converters for maximum precision sound
‧ High output level (9,7dBu or 2,4VRMS). Able to drive a powerful amplifying unit
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PARTS NAME AND FUNCTION
6 7 8 9
1
2 3 4
5
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A50
PARTS NAME AND FUNCTION
1. RCA Input Jacks
Connect your desired sound equipment; record player, CD/MP3/WMA player, turntable,
mixer, effect player, cassette deck or radio, to the RCA input jacks on the A50.
2. RCA Output Jacks
With these jacks you can connect the A50 to speakers with a built-in amplifier, mixers
or effect machine
s.
3. Ground Terminal
Connect turntable ground leads to this ground terminal. This will reduce the humming
and popping noises associated with magnetic phono cartridges.
4. USB Port
Use this port to connect to the USB port of your computer.
5. Line /Phono Switch
This switches are for the two inputs to switch LINE or PHONO.
CAUTION
: The button must be in the "Phono" position for turntable operation.
6. Microphone Volume Knob
This knob can adjust the microphone input volume.
7. Microphone Jack
This jack will accept a standard 1/4" plug. The volume outut level for the microphone
will be contolled by the Microphone Volume Konb.
8. Headphone Jack
You can connect your headphones to this jack to moniter sound.
9. Headphone Volume Knob
This knob allows you to adjust the headphone volume output level.
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CONNECTION
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A50
ASIO DRIVERS INSTALLATION
Before you can use the A50, you need to install its ASIO driver first. The ASIO lower
latency to under 10 ms. You can configure the driver's settings using the Control Panel
window. This tool and its options are explained following
Minimum requirements
PC
‧ Intel Pentium II 450MHz CPU or comparable AMD CPU (recommend at least a
Pentium III CPU with 600M MHz
)
‧ Windows 98SE, ME, 2000, XP, Vista and Windows 7 operating system
‧ 1 available USB port
‧ At least 128MB RAM
‧ Software applications with ASIO support
Mac
‧ Power Macintosh G3 or higher
‧ 1 available USB port
‧ At least 256MB RAM
‧ Mac OS X 10.3 or higher
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PC ASIO DRIVER INSTALLATION
Step 1:
Place the installation CD in the CD-ROM
drive of your computer and execute
Setup.exe
Step 2:
Select the desired language and click
"OK"
Step 3:
Click "Install the driver"
Step 4:
Plug VOXOA 50 to your computer's USB
port
Step 5:
The ASIO installer began to initialize the
USB audio device
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A50
Step 6:
Please unplug VOXOA A50 and then
replug it to the computer
Step 7:
The ASIO installer is installing USB drivers
Step 8:
In order to complete the installation it's
necessary to reboot the computer. Press
"Reboot now" or press "Reboot later" if you
don't want to reboot your computer now
: In order to complete the
installation. It's necessary to reboot the
computer.
PC ASIO DRIVER INSTALLATION
CAUTION
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MAC ASIO DRIVER INSTALLATION
1. Select icon VOXOA_A50_4_2.0.9. mpkg
to start Driver installation
2. Select Continue
3. Select Continue
4. Select Install
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A50
5. Software installation is in process
6. Software has been successfully
installed
7. At the application window a new icon
Hill appear lablled "VOXOA A50 Control
Panel". Click on it to a access the Control
Panel
VOXOA A50 ASIO control panel shows as
below
MAC ASIO DRIVER INSTALLATION
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VOXOA A50 CONTROL PANEL
ASIO driver Control Panel:
When you use the ASIO Driver supplied accordingly, open the ASIO-USB Control Panel
in your computer. When you have the driver installed an icon will appear at the lower
right of your PC
Open it with mouse right button and you can view the ASIO-USB Control Panel
It is very important that you understand well the Control Panel since it is where you
change the settings of your sound card VOXOA A50
: If you press "Gang" both sliders will move like one. If you press "Mute" the
IN/OUT is muted
Headphone Output Level:
1+2: sets the A50 Headphones Output level of VOXOA A50 Channels 1 and 2
3+4: sets the A50 Headphones Output level of VOXOA A50 Channels 3 and 4
This is the internal HP level (Inside your computer). You also have an analogue
potentionmeter to further adjust the Headphone Output level (See page when the audio
signal is converted from digital to analogue.)
Upon your DJ Software use mode you'll have to adjust the HP Output according
y.
CAUTION
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A50
VOXOA A50 CONTROL PANEL
NOTE: ALWAYS turn down the analogue Headphones level (See page before using
them. The Output level is high enough to damage your hearing.
MIC Level:
VOXOA A50 has two electronic paths for Microphone, one analogue and one digital
(converted into digital signal and processed by your computer software)
Gain:
sets the Microphone Input sensitivity prior to be digitalized into your computer. Similar
to a normal Gain on a mixer. For proper level setting, the precessing software on your
computer shall have a level meter so you can optimize your dynamic range as is
usually done with the Gain of a Mixer channel
Through:
controls the analogue electric path of the Mic signal. We will take care of these issues
later in this manual
NOTE: If you press MUTE the IN/OUT is muted
Input Level:
VOXOA A50 has two Input level controls; one for channels 1+2 and one for channels
3+4. Similar to a normal Gain on a mixer. For proper level setting, the processing
software on your computer shall have a level meter so you can optimize your dynamic
range as is usually done with the Gain of a Mixer channel
Output Level:
VOXOA A50 has two Output level controls; one for channels 1+2 and one for channels
3+4. For proper level setting, the precessing software on your computer shall have an
Output level meter so you can optimize your dynamic range as is usually done with the
main Output of a Mixer
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SPECIFICATIONS
GENERAL SECTION
Dimensions: 133(W) x 126(D) x 46(H)mm
Weight: 0.55 kg
OUTPUT SECTION
LINE:
INPUT/OUTPUT IMPEDANCE
& SENSITIVITY: 17-20KHz ±2dB
THD+N: (A-Weighted, w/20kHz LPF): THD≦0.02%
MAXIMUM OUTPUT: THD≦0.5%, ≧+7.6dBV (9.8dBu=2.4Vrms)
S/N RATIO: ≧85dB
CHANNEL SEPARATION:≧80dB at 1KHz between L and R
HEADPHONES:
FREQUENCY RESPONSE:17-20KHz ±2dB.
THD+N: (A-Weighted, w/ 20kHz LPF): THD≦0.05%
MAXIMUM OUTPUT: THD≦0.1%, ≧ +6.85dBV(9dBu=2.2Vrms) Load=100 Ohm
S/N RATIO: ≧85dB
CHANNEL SEPARATION: ≧86dB at 1KHz between L and R
RECORDING AND INPUT SECTION
LINE IN:
INPUT/OUTPUT IMPEDANCE & SENSITIVITY:10-50K OHM /-14dBV (200mV) ±2dB
S/N RATIO: ≧75dB
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A50
SPECIFICATIONS
RECORDING AND INPUT SECTION
FREQUENCY RESPONSE:20-20KHz +2/-3dB
THD+N: ≦0.05%
MAXIMUM INPUT: ≧+6dBV
PHONO:
INPUT/OUTPUT IMPEDANCE & SENSITIVITY:47K OHM /-54dBV (2mV) ±2dB
S/N RATIO: ≧65dB
FREQUENCY RESPONSE:20-20KHz +2/-3dB
MAXIMUM INPUT: ≧+6dBV
MIC:
INPUT/OUTPUT IMPEDANCE & SENSITIVITY:2.2K OHM /-54dBV (2mV) ±2dB
S/N RATIO: ≧60dB (MIC VR GAIN MAX)
FREQUENCY RESPONSE:20-20KHz +2/-3dB
THD+N: ≦0.15%(MIC VR GAIN MAX)
MAXIMUM INPUT: ≧-35dBV
MIC THROUGH:
INPUT/OUTPUT IMPEDANCE & SENSITIVITY:2.2K OHM /-52dBV (2.5mV) ±2dB
FREQUENCY RESPONSE:20-20K Hz +2/-3dB (Out Gain MAX)
THD+N: ≦0.15% (MIC VR GAIN MAX)
NOTES: Specifications and impromvments in the design of this unit and this manual
are subject to change without any prior written notice.
Printed in ChinaVERSION 1.0
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