Rolls RM424 Four Channel Four Zone Line Mixer with DuckingThe outputs on the RM424 are all balanced XLR connectors, and phoenix-style remote volume connectors provides each zone with a means for external volume control via a simple 10-100k ohm potentiometer (sold separately). The microphone inputs feature selectable phantom power, and automatic ducking assignable to each zone for easy paging.
The RM424 is the ideal solution for banquet rooms, offices, restaurants, night clubs, etc. AC power adapter included. Made in the USA.
For more than two decades, those in the know have turned to Rolls for the highest quality, reliability, and value. Rolls is an innovative company specializing in domestically manufactured signal interface accessories, mixers, amplifiers, and processors for the audio professional.
Specifications: • Frequency response: 20 - 20,000 Hz ± 0 dB • Input impedance: 10k ohms balanced; 50k ohms unbalanced • Signal-to-noise ratio: >75 dB • THD: <0.3% • Dimensions: 19" x 1.75" x 6.5" • Weight: 7 lbs. (3kg).
Constant Voltage (70-Volt) Audio Systems
Audio distribution systems, especially those commonly used in department stores, warehouses, restaurants, etc., require that many loudspeakers be driven from a single audio amplifier over long runs of speaker wire. The "constant voltage" or "high impedance distribution" audio systems can be complex to understand at first, however, provides many advantages. Learn how to design your own 70-volt or 25-volt loudspeaker system.