Alice 828 MK3

The Alice 828 MK3 Mixing Desk is a professional-grade audio mixer designed for record production, broadcasting, and communications. Here are the key features and technical specifications:

Features:

1. Historical Background:
   • The 828 series mixer originated in 1976 at the Alice factory in Windsor, and the MK3 version, designed by Ted Fletcher in 2019/20, started production in August 2021.
2. Limited Edition Versions:
   • 10 limited edition versions are available with relays on all three mic channels in three colors: Chilli Red, Tango Orange, and Midnight Blue.
3. Transformer-Balanced Inputs and Outputs:
   • Microphone and mono line inputs & line outputs are transformer-balanced for high-quality audio.
4. Microphone Inputs:
   • Three microphone inputs with 48v phantom powering.
   • Microphone position one has monitor cut and a remote control relay via the 9-pin D-Sub (MIC AMP).
5. Input Amplifier:
   • Transformer input for both mic and line input.
   • Switchable phantom power with an indicator LED.
   • Discrete transistor circuitry working in pure class A.
   • Inputs: XLR for mic input, standard balanced 1/4″ jack for line input.
   • Handles levels of -60dB and -20dB from mic and line.
6. EQ Section:
   • Discrete class A Baxandall EQ circuit with an EQ in/out switch and LED indicator.
   • Mid-frequency sweep covers 400Hz to 3.5KHz with a lift and cut of 14dB.
7. Channel Fader and Routing:
   • 60mm ALPS precision fader with aux controls (one pre and one post-fader), rotary pan control, and direct channel output.
   • Locking PFL switch routes pre-fader audio to the monitoring system.
8. Stereo Channel:
   • Stereo channels with a pair of standard jack connections on the termination panel.
   • Input gain control handles levels above -20dB.
   • RIAA input version available via RCA connectors if specified.
9. Group and Limiters:
   • Passive mixing to discrete transistor limiters of the classic 828 design.
   • Each limiter has in/out buttons, an indicator LED, and a threshold control.
   • Main output after ALPS master faders is via parallel integrated amplifiers and output transformers.
10. Monitoring:
    • Monitoring with illuminated VU meters and PFL registers.
    • Interrupted by PFL and mute system.
    • Headphone output on the front panel.
    • Dim, mono, and polarity reverse controls for both outputs.
11. Power:
    • Mains powered via a switch-mode power supply operating from any mains voltage.
    • Highly efficient, producing minimal heat.
    • Power consumption less than 5 watts.
12. Construction:
    • Body made of 1.6mm steel for ruggedness.
    • Electronics built on separate vertical printed circuit boards.
    • Minimal internal wiring with connectors mounted on circuit boards.
    • Efficient total magnetic screen for interference minimization.
13. Dimensions and Weight:
    • Dimensions: 460 x 306 x 100mm.
    • Weight: 7.2Kgs.
14. Performance:
    • Technical performance designed for professional use in record production, broadcasting, and communications.
15. Versions:
    • RIAA inputs, PPM meters, and a 1228S version will be available in 2021.

The Alice 828 MK3 Mixing Desk is a versatile and robust audio mixer with a rich history, incorporating modern design elements for professional audio applications. The various features and options make it suitable for a wide range of recording and broadcasting needs.