The Alice 1228 MK3 Mixer is a professional-grade audio mixer designed for various applications such as record production, broadcasting, and communications. Here are the key features and technical specifications:
Features:
- Historical Background:
- The 1228 series mixer dates back to 1976 at the Alice factory in Windsor, with the MK3 version designed by Ted Fletcher in late 2019 and production starting in August 2021.
- Number of Inputs:
- 12 microphone and mono line inputs & line outputs are transformer-balanced.
- Phantom Power:
- All microphone inputs come with 48v phantom powering.
- Limited Edition:
- Available in standard gun metal gray.
- Monitor cut and remote control relays are available at the time of ordering.
- Input Amplifier (MIC AMP):
- 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.
- 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.
- Channel Fader and Routing:
- 60mm ALPS precision fader with aux controls (one pre and one post-fader), rotary pan control, and a direct channel output.
- Locking PFL switch routes pre-fader audio to the monitoring system.
- 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.
- 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.
- Monitoring:
- Active circuitry in the signal path is discrete transistor using ‘through hole’ technology.
- Monitoring to a stereo 1/4″ jack socket on the rear panel interrupted by both PFL and a mute system.
- Headphone output on the front panel interrupted by PFL.
- Dim, mono, and polarity reverse controls for both outputs.
- Metering:
- Illuminated VU meters and PFL registers on both meters.
- 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.
- Performance:
- Technical performance designed for professional use in record production, broadcasting, and communications.
- Versions:
- In 2021, the mixer will be available with RIAA inputs, PPM meters, and a 1228S version will be available mid-summer.
- Construction:
- Body made of 1.6mm steel for ruggedness.
- Electronics built on separate vertical printed circuit boards with removable ribbon cable.
- Efficient total magnetic screen to minimize electrical or magnetic interference.
- Dimensions and Weight:
- Dimensions: 460 x 306 x 100mm.
- Weight: 7.2Kgs.
The Alice 1228 MK3 mixer is a versatile and durable audio mixer designed to meet the demands of professional audio production. Its combination of classic design elements and modern technology makes it suitable for various applications in the audio industry.
