User manual JBSYSTEMS USB AUDIO CONVERTER V2.1

[. . . ] Don't place metal objects or spill liquid inside the unit. No objects filled with liquids, such as vases, shall be placed on this appliance. electric shock or malfunction may result. If a foreign object enters the unit, immediately disconnect the mains power. [. . . ] To avoid condensation to be formed inside, allow the unit to adapt to the surrounding temperatures when bringing it into a warm room after transport. Condense sometimes prevents the unit from working at full performance or may even cause damages. For more information on connections, please refer to the next chapter. In this manual we talk about "line inputs". This is a global name for inputs with a level within 2V. PS: Before installing the software from the CDROM, you can check the (http://audacity. AUDIO INPUT: use this cinch (RCA) input to connect the analog audio equipment you want to record from. This can be a turntable or any line level audio equipment. GROUND CONNECTION: use this screw only to connect the eventual earth wire from your turntable. AUDIO OUTPUT: you can use the USB audio converter also as an (additional) sound card for your PC or laptop. In that case you have to connect this output to an amplifier or other line level input. AUDIO INPUT SWITCH: used to adapt the audio input (see n°1) to the equipment that is connected: LINE position: you can connect any line level audio output to record it on your computer. PHONO position: use this position if you connect a turntable. (internal RIAA amplifier is activated) If possible, please also use the ground connection (see n°2). LINE INPUT SENSITIVITY: line signals coming from different equipment can differ a lot. Most CDplayers have 2V output while the output from a tuner or cassette deck is often not more than 350mV. You can use this knob to optimize the sensitivity of the incoming line signal, refer to the peak indicator (6) for the optimal setting. POWER/PEAK LED: this indicator is green when the unit receives power from the USB connecter on your computer. When the line input is too high (input overload) this indicator turns red. In this case use the line input sensitivity knob (5) to lower the input. USB CONNECTOR: used to connect the USB audio converter to your computer. The unit will be recognized immediately, no drivers needed. [. . . ] SOME NICE EFFECTS AND TOOLS TO LOOK AT: NOISE REMOVAL: tool to remove the noise from your recordings. NORMALIZE: tool to put all recordings at the same recording level (preferable at 0dB) CLICK REMOVAL: tool to remove small clicks and popping noises. You can use this tool to record a 1/3 33 RPM vinyl at 78 RPM and reduce the speed back to normal. the recording time will be reduced a lot! [. . . ]