Manual
Table Of Contents
- Fig A: Packing List
- Fig B: Power Connections
- Fig C: Mains Lead Table
- Fig 1-1: RB-2S4 Reference Monitor Front Panel
- Fig 1-2: RB-2S10 Reference Monitor Front Panel
- Fig 1-3: Reference Monitor Block Diagram
- Fig 1-4: RM-2S4 Front Panel Controls
- Fig 1-5: RM-2S10 Front Panel Controls
- Fig 1-6: RM-2S4 Source Selector
- Fig 1-7: RM-2S10 Source Selector
- Fig 1-8: RM-2S4 & RM-2S10 Meters
- Fig 1-9: RM-2S4 & RM-2S10 DIPSwitch Settings
- Fig 1-10: Meter Labelling Options
- Fig 1-11: Brightness Control
- Fig 1-13: Balance Control
- Fig 1-12: Phase Meter Display
- Fig 1-14: Status LEDs
- Fig 1-15: RB-2S4 & RB-2S10 Modifier Switches
- Fig 1-16: Reference Monitor RM-2S4 Rear
- Fig 1-17: Reference Monitor RM-2S10 Rear
- Fig 1-18: RM-2S4 & RM-2S10 DIPswitch Settings
- Fig 2-1: RB-4C8 Reference Monitor Front Panel
- Fig 2-2: Reference Monitor Block Diagram
- Fig 2-3: RM-4C8 Front Panel Controls
- Fig 2-4: RM-4C8 Rotary Source Selectors
- Fig 2-5: RM-4C8 Meters
- Fig 2-6: RM-4C8 DIPSwitch Settings
- Fig 2-7: Meter Labelling Options
- Fig 2-8: Brightness Control
- Fig 2-9: Phase Meter Display
- Fig 2-10: Balance Control
- Fig 2-11: Status LEDs
- Fig 2-12: RB-4C8 Modifier Switches
- Fig 2-13: Reference Monitor RM-4C8 Rear
- Fig 3-1: RM-HD1 Expansion Card
- Fig 3-2: RM-HDE1 Expansion Card
- Fig 3-3: Reference Monitor RM-HD(E)1 Block Diagram
- Warranty
- Safety Information
- Installation Information
- Reference Monitors Introduction
- RM-2S4 Reference Monitor, 2 LED meters & 4 stereo
- channel inputs
- RM-2S10 Reference Monitor, 2 LED meters & 10 stereo
- channel inputs
- Technical Specification RM-2S4 & RM-2S10
- RB-4C8 Reference Monitor, 4 LED meters, 8 channel inputs &
- dual selectors
- Technical Specification RM-4C8
- RM-HD1 Reference Monitor HD-SDI Expansion Card &
- RM-HDE1 Reference Monitor HD-SDI & Dolby E Expansion Card
- Technical Specification RM-HD1 & RM-HDE1
- Serial Interface Commands & Responses Protocol
26
Reference Monitors User Handbook
REFERENCE MONITORS RM-4C8
REFERENCE MONITORS RM-4C8
2
RM-4C8 Reference Monitor, 4 LED meters, 8 channel inputs &
dual selectors
Introduction
Fig 2-1: RM-4C8 Reference Monitor Front Panel
The RM-4C8 is a 1U rack-mount unit oering quality loudspeaker monitoring and accurate,
high-resolution metering of up to eight mono audio sources and more with the addition
of an optional expansion card. Sources may be in any mixture of analogue and AES/EBU
digital formats, with sample rates up to 192kHz accepted.
The Sources for both left- and right-hand loudspeakers (and additional Banks of Sources,
if available) are individually selected via a pair of front panel rotary encoders, with clear
LED indication of the current selections. A pair of line-level audio outputs, congurable
as analogue or AES/EBU digital, follow the selected sources at either a xed level or one
mirroring the loudspeaker volume.
The levels of the selected bank of four sources are simultaneously displayed on a quartet
of bright, multicoloured 26-segment bargraph meters, with a choice of seven accurately
modelled scales/responses to suit dierent applications and local preferences. A separate
phase meter indicates channel correlation or phase error conditions between the two
selected sources. On the rear panel, open-collector alarm outputs provide hardware
indication of sustained underlevel, overlevel, phase errors and digital source lock.
Six illuminated pushbuttons provide access to a range of audio ‘modiers’ – instant
dimming of the volume, muting of each audio channel, stereo-to-mono conversion, phase
inversion and Middle+Side transcoding. On the rear panel, logic-level inputs allow direct
remote access to the DIM and MUTE functions.
The three-way loudspeaker system is fed via a DSP-based active crossover and a trio of
highly ecient Class-D ampliers. Careful attention to driver selection, materials and
case design, plus active DSP equalisation, has ensured a at response and outstanding
reproduction from such a shallow unit. A protective limiter prevents damage to the
loudspeakers under overload conditions and the front-panel headphone socket
automatically mutes the internal loudspeakers when a plug is inserted. A Balance control
allows you to alter the stereo image, or Pan, of the two selected sources.
A further ve-band parametric equaliser can be accessed for room-equalisation purposes
via Sonifex SCi Windows-based remote control software. Source selection, status
monitoring and unit ID functions, plus rmware updates to add extra functionality, are
all accessible remotely via both USB and RS232 connections in conjunction with Sonifex
SCi software. The open control protocol also allows operation with terminal programs or
customised applications.