Citronic 128.515, AC-I USB AUDIO Capture Device User Manual

AC-1 USB AUDIO

CAPTURE DEVICE

USER MANUAL

128.515

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PAGE 1

INTRODUCTION

A great little gadget from Citronic, bridging the gap between analogue and digital. This USB
sound card is designed to connect your turntable, mixer or CD player and convert the signal to
digital, the USB connector plugs into your PC/MAC and allows you to record the audio using
the software provided. There is also an analogue output so it can be linked between an existing
system to record. Ideal for converting vinyl to MP3 and creating live mixes.

• PC and MAC compatible

• Supplied with recording software

• Connect and capture the audio output of any source

• Record to your PC/Laptop or MAC

• Plug and play device, no drivers required

• Power supplied via USB

• 2 analogue inputs/outputs, switchable between line and phono

• Includes ground connection for turntables

• The complete solution for connection between the analogue and
digital domain

The Unit does not need a separate power supply, its is powered via the USB connection.
This product is supplied with Audacity recording software. This software is
freeware. Please check on the website link below to ensure you have the latest version of the
software www.audacity.sourceforge.net. Please ensure you have installed the software before
starting.
Stereo analogue audio input switchable for Line/Phono via RCA phono sockets. Stereo output,
Line level only via RCA phono sockets.

SET UP PROCEDURE

1) Connect an input source to the unit

2) Connect the USB lead to your computer

3) Install the Audacity recording software

4) Open the Audacity program

5) Go to EDIT then PREFERENCES

6) Click AUDIO I/O tab

7) Choose playback device USB AUDIO CODEC from the drop down menu

8) Choose recording device

USB AUDIO CODEC from the drop down menu

9) Choose

CHANNELS (2 STEREO)

10) Tick SOFTWARE PLAYTHROUGH BOX

11) Click OK

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RECORDING & SAVING TRACKS

1) Play the track to be recorded

2) Click the RED record button on the computer

3) When you have finished the recording, click the YELLOW stop button

4) You can now click FILE and choose to save your recording

5) Click the

GREEN play button to playback your finished recording

TECHNICAL INFORMATION

Screw grounding connection when using a turntable.
If a CD player with a very high output is used, like the CD-S2, the input recording level can
exceed 2V p-p, this will result with slight digital noise. If this happens the CD player will have to
be fed through a mixer to reduce the levels to the correct Line level 2V p-p.
If the output of the AC-1 is connected to a mains earthed mixer, an earth loop can be generated.

In cases like this a ground loop isolator should be used.

SPECIFICATION

Power 5Vdc
Frequency Response 20Hz - 20kHz
THD+N (a weighted) : Phono < 0.08% @ 1kHz
THD+N (a weighted): Line < 0.05% @ 1kHz
S/N Ratio (a weighted): Phono < -65dB
S/N Ratio (a weighted): Line < -75dB
Maximum Input: Phono 19mV @ 1kHz
Maximum Input: Line 2V @ 1kHz
Channel Separation: Phono < -65dB
Channel Separation: Line < -75dB
Input Impedance Phono : 47K ohms. Line : 4K ohms
USB Cable Length 1.5m
Computer Interface USB1.1 Windows XP or MAC OS9.1 or newer
Dimensions 75 x 107 x 30mm
Weight 140g

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