User's Guide QuadMic Portable Professional Mic Preamp 4-channel Microphone / Line Preamp with Line Outputs Wide Range Power Supply Input
Contents 1 2 3 4 5 6 Introduction ...............................................................3 Package Contents .....................................................3 Brief Description and Characteristics.....................3 Technical Specifications ..........................................3 Power Supply.............................................................4 Operation and Usage 6.1 Connections .............................................................5 6.2 Mic/Line Inputs .................
1. Introduction Thank you for choosing the QuadMic. This unique microphone preamp allows to connect any kind of microphone to any line level input. Thanks to the option of battery-powered operation, the QuadMic makes an ideal companion to RME’s computer interfaces in mobile recording situations. An excellent signal to noise ratio, lowest harmonic distortions and wide gain range make the QuadMic your first choice even for studio use! 2.
5. Power Supply • Typical current drawn at 12 Volt operating voltage: 380 mA (4.6 Watts) • Accepted power supply voltage DC 9 V – 18, + center pin. In order to make operating the QuadMic as flexible as possible, it contains a switching regulator of the latest technology, which not only has a high efficiency (> 90%), but also prevents internal hum noise, as it operates at 100 kHz. Another advantage: the QuadMic accepts any power supply with voltages between 9 and 18 V DC.
6. Operation and Usage 6.1 Controls The front of the QuadMic has the gain knobs, switches for low cut, phantom power and phase, and several status LEDs: +48V (LED) lights up when phantom power is active. Phantom power should only be activated when using condensor microphones which require such a power supply. The CLIP LED lights up 3 dB before the input is overloaded. Referenced to the output level it lights up at around +18 dBu. SIG (Signal) indicates the presence of an input signal.
.2 Mic/Line Inputs The QuadMic provides 4 balanced Mic and Line inputs via 1/4" TRS (stereo) and XLR jacks. The electronic input stage is built in a servo balanced design which handles monaural and stereo jacks correctly. When used unbalanced it automatically corrects the gain by 6 dB. When using unbalanced cables with stereo TRS jacks, the 'ring' contact of the cable's jack should be connected to pin 1 (ground). Otherwise noise may occur, caused by the unconnected negative input of the balanced input.
8. Warranty Each individual QuadMic undergoes comprehensive quality control and a complete test at IMM before shipping. The usage of high grade components should guarantee a long and trouble-free operation of the unit. If you suspect that your product is faulty, please contact your local retailer. Audio AG grants a limited manufacturer warranty of 6 months from the day of invoice showing the date of sale. The length of the warranty period is different per country.
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11. CE / FCC Compliance Statements CE This device has been tested and found to comply with the limits of the European Council Directive on the approximation of the laws of the member states relating to electromagnetic compatibility according to RL2004/108/EG. FCC 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.
