The new D-Series multi-channel digital amplifiers will include three models, the eight-channel D890, the 12-channel D1290, and the 16-channel D1675 to expand an audio system into more zones and rooms.
These models use a digital design that results in smaller chassis sizes than in any previous generation of Russound amplifiers while delivering up to 90 watts per channel on the D890 and D1290 models and 75 watts per channel in up to 16 channels in the D1675. The D890 eight-channel and D1290 12-channel models are 1RU in height, while the D1675 is 2RUs.
The D-Series amps include new, easily configurable audio filter options to customise the audio output for the desired application. Any stereo pair, zone, or bridged speaker connection on the D-Series models can be set to output three different options. The Full Range Sound feature allows for a full range of sound between 20Hz and 20kHz to the connected loudspeaker. Low Pass Filter allows the connected speakers to receive low-frequency audio signals, from 20Hz to 160Hz. Finally, there is the High Pass Filter, which allows the zone or channel to focus on only the higher frequencies, from 80Hz and up. This filter protects the amplifier by avoiding unneeded impedance swings from the speakers attempting to drive lower frequencies that they are not capable of producing.
The D-Series amplifiers allow for up to three different input choices for every channel. Installers can use two available bus inputs as the input for any channel, or they can use a dedicated input. By combining multiple zones of audio amplification into a single chassis, any audio installation can grow and expand to other areas in and around the home without the need for separate amplifiers and separate audio connections for every area as one amplifier can power multiple loudspeakers.
The D-Series amplifiers also offer three turn-on modes, allowing for easy configuration of any audio system. This includes Always On, ensuring the amplifier is ready 24/7; Signal Sensing, which allows the amplifier to reduce its energy consumption to less than 0.5 watts of power when not being used; and, 12V Trigger, which allows an installer to customise when the amplifier turns on and off.