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REFERENCE MONITORS
REFERENCE MONITORS
Reference Monitors
Optional HD Expansion Cards
RM-HD1 HD-SDI expansion card &
RM-HDE1 HD-SDI & Dolby® E expansion card
The HD-SDI video input expansion cards
allow multiple AES groups embedded within
an HD-SDI or SD-SDI signal to be
de-embedded and monitored, either as
linear PCM with Dolby® E or Dolby® Digital
encoding (RM-HDE1), or as non-encoded
linear PCM (RM-HD1).
The HD-SDI input is equalised, internally
reclocked and re-transmitted to provide
a reclocked output to pass to external
equipment via an output BNC connector,
allowing the reference monitor to be
inserted into an HD-SDI chain.
Each of the drivers is magnetically shielded
so that the monitors are perfectly safe to use
near CRTs and TFT displays and each speaker
uses a separate, highly ecient class-D
switching amplier.
Even cable lengths to and from the speaker
enclosures have been kept short to reduce
any potential microphonic induction.
DSP Based Design
The use of a modern electronic architecture
allows a much better audio performance
to be realised. The DSP-based, 3rd-order
active crossover provides perfect separation
between mid-range and bass sounds.
Reference Monitor Block Diagram
Inputs - RM-2S4 & RM-4C8
Inputs - RM-2S10
Digital Signal Processor
Front Panel
Microcontroller
Analogue
Or Digital
Inputs x 8
A/D
Converters
AES/EBU
Receivers
A/D
Auto
Switch
AES/EBU
Termination
Ana
Inputs
x 10
Digital
Inputs
x 10
A/D
Bank
Select
AES/EBU
Receivers
Global
Mains
Power
Power
Supply
+24V
+5V
-5V
Front
Panel
Indicators
Display
Driver
Slave
Micro
USB Remote
Control
Alarms &
Logic I/O
RS232 Remote
Control
Conguration
Switches
I/P
Gain
Select &
Modiers
I/O
Metering
(RM-2S4
Only)
Fixed/Variable
Line-Level
O/P
Reference Monitors Block Diagram
Amp
Amp
Amp
Amp
A/D
Output
AES/EBU
Termination
A/D
Converters
x8
D/A
Converters
AES/EBU
Transmitters
D/A
Converters
F
A
B
C
D E G
= 10 Way Selector
A
= Signal Presence Detector
B
= Fixed Speaker EQ
C
= User Variable EQ
D
= Volume & Balance Control
E
= Speaker Protection Limiter
F
= Crossover
G
Phase
Metering
Level
Metering
Front Panel Switches
Front Panel Rotary Controls
Left
Speaker
Mid
Speaker
Right
Speaker
Line
Level
Outputs
Head-
phones
A DSP-based electronic equalisation is
used to atten the frequency response
and also enables the 5 band parametric
EQ. Additionally, the fast-attack DSP
loudspeaker limiter protects the drivers
from overload damage.
Audio Modiers
Six illuminated soft-touch pushbuttons
allow front panel muting and dimming
of the loudspeakers, stereo-to-mono
conversion, phase inversion and
Middle+Side encoding/decoding
with all front panel settings stored in
non-volatile memory which is recalled
at power-up. A universal power supply
ensures global voltage operation
without adjustment.