APB-DynaSonics’ ProRack™ small-format mixers incorporate a wealth of professional features and exceptional performance into 10 rack spaces. The chassis design features an adjustable connector assembly that freely rotates and can be set to three different angles relative to the front panel. This allows the input and output jacks to be properly positioned whether the mixers are mounted in a vertical rack, slant rack or used on a desk top. All channels can assign to Left-Right, Center and Mono mix bus assignment along with additional assignment switches to subgroups 1-2 and 3-4. These outputs (including aux outputs) each have balanced XLR outputs, TRS bus inputs and TRS insert connectors.
ProRack’s™ audio design includes the use of minimum phase-shift circuitry, expressive EQ and integrated mic preamplifiers, both used in a proprietary front end circuit. In addition to superior audio quality, reliability and serviceability are also primary design criteria.
APB DynaSonics ProRack-House Features
- 12 Mono input channels and 4 Dual-Mono/Stereo input channels, all with Spectra-quality microphone preamplifiers in a 10u (17.5” x 19”) package
- Minimum phase shift circuitry and internal Mother Board/Daughter Board construction derived from the Spectra console design
- 48 volt Phantom Power switch, Mic/Line switch, Mic Pad switch, and Polarity Reverse switch
- Variable frequency high-pass filters on all Mono and Stereo input channels with a 20Hz to 400Hz sweep range at 12dB per octave
- Mono input channels feature fixed high and low frequency EQ bands and two mid-sweep EQ bands, with EQ On switch and LED
- Stereo channels feature fixed high and low frequency EQ bands and a single mid-sweep EQ based on Spectra circuitry
- Six aux sends; each pair of sends switchable between a pre or post fader source
- All channels can assign to Left-Right, Center and Mono mix bus assignment along with additional assignment switches to subgroups 1-2 and 3-4
- Left-Right, Center and Mono mix output level can be switched from line level to mic level
- Internally illuminated Mute and PFL/AFL switches along with 6-segment LED channel metering and 100mm faders on all input channels
- Four LED bar graphs can meter the Left, Right, Center and Mono outputs or the Group 1-4 outputs
- Bus level signal monitoring using bi-color LED’s on all 14 mix buses: Left, Right, Center, Mono, Groups 1-4, and Aux 1-6
- 100-240 VAC, 50/60Hz Power Supply – Field replaceable (plug in) without disassembly of mixer
- Adjustable connector assembly rotates and can be locked into any of three different angles relative to the front panel
- ProRack-House 16-channel analog mixer1
- Frequency Response (any input to any output)+0/-0.5dB 20Hz to 20kHz (ref to 1kHz)
- THD+Noise (mic input to main output)<0.01% @ +15dBu output
- Phase Response (mic input to main output)+10/-15 degrees 20Hz to 20kHz (ref 1kHz)
- Noise
- Mic EIN: -128dBu @ 60dB gain, 150Ω source
- Main Bus (L-R-C-M) Output Noise: -85dBu (all channels assigned w/ faders down, master faders at unity)
- Group Bus (1-4) Output Noise: -85dBu (all channels assigned w/ faders down, group master fader at unity)
- Aux Bus (1-6) Output Noise: -90dBu (aux sends down, aux master at unity)
- Crosstalk (measured at 1kHz)
- Channel Mute: >100dB
- Channel Fader Attenuation: >100dB
- Channel Routing: >80dB
- Channel Pan Isolation: >80dB
- Channel to Channel Isolation: >90dB
- Aux Send Attenuation: >90dB
- Aux Pan Isolation: >70dB
- Input/Output Impedance
- Channel XLR Input: >3KΩ balanced (with or without Pad)
- Channel Line Input (via TRS): >20KΩ balanced
- Channel Line Input (via XLR w/ Pad): >4KΩ balanced
- Channel TRS Direct Out: 100Ω impedance-balanced
- Bus XLR Outputs (main, group, aux): 100Ω symmetrically-balanced (to feed 600Ω or greater)
- Channel and Bus Insert Sends/Returns: 100Ω unbalanced / 5KΩ unbalanced (to feed 2KΩ or greater)
- Monitor TRS Outputs: 100Ω impedance-balanced
- Input/Output Levels
- Channel Insert: +4dBu (Tip= Send, Ring= Return, Sleeve= Audio Gnd) Max Out= +22dBu
- Channel Direct Out: +4dBu (TRS Impedance Balanced, Tip= “Hot”) Max Out= +22dBu
- XLR Balanced Outs: +4dBu (Symmetrically-Balanced, Pin 2= “Hot”) Max Out= +26dBu
- TRS Balanced Outs: +4dBu (Impedance-Balanced, Tip= “Hot”) Max Out= +22dBu
- Bus Insert: -2dBu (Tip= Send, Ring= Return, Sleeve= Audio Gnd) Max Out= +22dBu
