The Quested SM748 is a four-input, eight-output digital crossover with EQ and filters.
The Quested SM748 is a four-input, eight-output digital crossover with EQ and filters. It features limiters and digital I/O. The device supports Bessel/Butterworth/Linkwitz-Riley filter types with 12-24-48dB/8ve settings. Operating modes include input options of 2/4 and output options of 4/6/8. Crossover frequencies allow parametric EQ with 8 per input and 9 per output, offering gain from +15dB to -30dB in 0.1db steps, frequency ranges from 19.7Hz to 32kHz with 136 octave steps, and Q/BW settings from 0.4 to 128 / 2.5 to 0.008.
High and low-pass filters are available per output. Gain range is +6dB to -40dB in 0.1dB steps for input and +15dB to -40dB in 0.1dB steps for output with mute functionality. Front panel switches include 12 mute buttons, 12 channel edit buttons, 6 utility buttons, and 3 rotary encoders. Analog inputs are 4 x XLRf, while digital inputs are not specified by the manufacturer. Outputs include 8 x XLRm analog and digital outputs not specified by the manufacturer.
Maximum input level is not specified by the manufacturer, maximum output level is +20dBm into 600Ω, frequency response is 20Hz to 20kHz with +1/2dB (-3dB @ 32kHz), dynamic range exceeds 116dB from 20Hz to 20kHz unweighted, and noise levels are not specified by the manufacturer.
- Filter Type: Bessel/Butterworth/Linkwitz-Riley 12-24-48dB/8ve Bessel/Butterworth 18dB/8ve
- Operating Modes: Input: 2/4 Output: 4/6/8
- Crossover Frequencies: Parametric EQ (8 per Input / 9 per Output): Gain: +15dB to -30dB in 0.1db steps Frequency: 19.7Hz to 32kHz, 136 octave steps Q/BW: 0.4 to 128 / 2.5 to 0.008 (Sections can be switched to shelving response) High and Low-pass Filters (1 of each per output): Frequency HPF: 10Hz to 16kHz, 1/36 octave steps Frequency LPF: 35Hz to 22kHz, 1/36 octave steps
- Gain Range: Input: +6dB to -40dB in 0.1dB steps Output: +15dB to -40dB in 0.1dB steps and mute
- Front Panel Switches: 12 x Mute buttons 12 x Channel edit buttons 6 x Utility buttons 3 x Rotary encoders
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