Introduction
5
THE BUS+ User Guide
Features
The Bus+ (General)
The Bus+ combines a feature-rich analogue SSL Bus Compressor with a powerful Dynamic EQ, all in a single 2U rack unit
➤ 100% analogue circuit, controlled digitally using the stepped front-panel pots
➤ 4 modes of operation - Classic Stereo, � S/C Stereo, Dual Mono or Mid-Side
➤ Huge +27.5 dBu headroom
➤ External side-chain inputs and sends
➤ Configurable processing order - Bus Compressor pre D-EQ (default) or post
➤ CH 1 IN and CH 2 IN buttons for global bypass
➤ Settable Operating Level - 0 dB (nominal), +10 dB, -5 dB
➤ Sleep and Auto-Sleep modes
Bus Compressor
The ultimate incarnation of the SSL Bus Compressor
➤ The authentic SSL Bus Compressor circuit utilising high-performance 2181 THAT VCAs
➤ LOW THD Mode reduces low-frequency distortion caused by compression
➤ F/B Mode alters the compression characteristics for a more 'relaxed' style of compression
➤ 4K Mode - single VCA operation with variable harmonic distortion to bring some 'grit' and 'grunge' to the mix
➤ Negative Ratios - for creative pumping effects and control of particularly loud signals
➤ New Attack and Release time constant options - more flexibility to shape the Bus Compressor, including the new
'Auto 2' setting
➤ Precision MDAC-controlled MAKE-UP Gain with two ranges available - 'Coarse' 1 dB steps or 'Fine' 0.5 dB steps
➤ Variable side-chain High-Pass Filter control up to 300 Hz in 10 Hz steps
➤ MIX control for instant parallel compression
➤ Moving-coil gain reduction meters
➤ Unlockable bonus mode: Transient Expander
D-EQ
An all-new, powerful 2-band analogue Dynamic EQ
➤ 2-band (LF and HF), parallel Dynamic Equaliser
➤ Compress/Expand modes
➤ 3 choices of time constants for each band - Nominal, FAST or AUTO.
➤ 16 selectable Frequency points per band
➤ Adjustable Range control per band from 0.5 dB to 15 dB
➤ HF band can be switched to Bell shape, with selectable frequencies covering High-Mids and Highs
➤ Frequency band static 'make-up' gain for LF and HF bands (Stereo/ � S/C Stereo) or LF band (Dual Mono/Mid-Side)
➤ G-Series mode changes LF filter to be 2nd order with degree of undershoot/overshoot
➤ Tri-colour activity LEDs to indicate D-EQ activity
➤ Individually bypass-able bands
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