These days, more and more educational institutions such as colleges, universities and high schools are expected to provide downloadable recordings - podcasts - of lectures and classes, for students to access at all times on the local area network. These recordings are typically taken from the classroom/lecture theatre sound system and saved to a computer in real time.
Problem 1: Getting the correct recording level is hard, given that the level requirements are different to those of speakers.
Problem 2: Maintaining a steady input level to the computer requires continual monitoring to prevent digital overload.
Introducing the new UniMIX from ARX: Six Balanced XLR Mic / Line input channels with individual level controls, plus a dedicated stereo RCA jack Line In channel.
Each Mic/Line input has infinity to +6dB of Level available on the front panel, as well as a 10 to 50dB Input Gain control. The stereo Line Input channel has a –10 to +10dB Level Trim control, to allow accurate matching of any line level signals.
On the rear panel, each of the 6 electronically balanced Mic inputs can be switched to Line via individual switches.
For the room system, the UniMIX has 2 Balanced XLR outputs, with 3 way EQ and its own Master Level control.
The Recording Output is a single Balanced XLR Output, transformer isolated to prevent ground loops and associated noise.
Automatic Gain Control
The Recording Master also has its own Automatic Gain Control circuitry. Specially tailored parameters ensure that levels remain constant, irrespective of Mic placement and user technique.
The result is a consistent level for the recording, providing increased intelligibility, removing the need for fulltime monitoring and the risk of overloading and distortion.
The final Master control feeds the main signal to a transformer isolated Balanced XLR Auxiliary Output. This can be used for future expansion, remote monitoring or for feeding a wireless transmitter or other device.
Global Phantom Power is available on all Microphone inputs with a rear panel switch with associated front panel status LED.
Wide Dynamic Range
Internally, careful attention to the signal path design, using precision components found in high-end mixing consoles, has resulted in a unit with very wide dynamic range. The UniMIX has enough headroom to cope with the hottest line signal, and better than digital noise specifications
Universal AC Power
AC power range is a universal 100 to 120V or 220 to 240V AC, and is connected to the unit via a standard three pin IEC connector, with built-in fuse and voltage change switch.
Automatic Gain Control for consistent audio recording levels
6 Mic/Line Input channels with Balanced XLR Inputs
Dedicated stereo Line In channel
Individual Level controls from infinity through to +6dB
Master Level controls
Dedicated Transformer Isolated Recording Level control with Balanced XLR Output
Input Impedance Mic: 4K Ohms Balanced, Line 22K Ohms Unbalanced
Input Gain Microphone: Variable 10 dB to 50 dB with rear trim control, Mic / Line switch -20dB
Output Level ( Max) +21dB
AGC Threshold –50 to –20 dB
AGC Output Gain –20 to +20 dB
+48VDC switchable on all Microphone Inputs
Output Signal/Noise (@ unity gain) -90dB A weighted, all inputs @ Unity, Master @ Unity
Dynamic Range 115dB
Master Output EQ