22
CONNECTIONS
HDMI inputs and outputs
The Realiser can receive up to eight channels of up to 192 kHz, 24 bit PCM audio through the
HDMI
IN
jack. The Realiser contains no decoders for Dolby, DTS or other codecs, so the source equipment
should be set to decode such signals and output them as PCM to the Realiser.
The
HDMI OUT
jack provides a pass-through of the signal at the
HDMI
input, including any video.
The Realiser must be powered on for
HDMI
pass-through.
The
HDMI OUT
jack does not carry the Realiser’s measurement and test signals. Those are available
at the analogue
LINE OUT
channels
1
-
8
.
The signal received via HDMI is also routed to the analogue
LINE OUT
channels
1
-
8
when the
Realiser is in bypass mode via the
PASS
key or the
TILT
function. Digital full scale will produce an
analogue output of about 1 V when the volume control is set to
0 dB
.
HDMI is a complex and changing interface, and many different versions of HDMI exist in the field.
The Realiser should be compatible with most HDMI equipment. The principal function of HDMI for
the Realiser is to provide a multichannel PCM digital audio input. The HDMI output is provided as a
convenience for the user. Should any difficulty with the pass-through be encountered due to
equipment incompatibility, an alternate solution is to purchase an HDMI splitter and use one splitter
output to connect to the Realiser’s input, and the other to connect directly to the video display or other
downstream equipment.
Analogue inputs and outputs
The analogue
LINE IN
and
LINE OUT
channels are numbered
1
through
8
. Each channel
number can be assigned to any loudspeaker position; the input and output numbering is assigned
together, so the assignments are always the same for input and output.
The analogue outputs must be connected to your amplifier inputs when making personalised room
response measurements.
The Realiser has an active analogue bypass function when the unit is on via the
PASS
key and
TILT
function, to allow for speaker/headphone comparisons. The active bypass applies 6 dB of attenuation
between analogue input and analogue output when the volume control is set to
0 dB
.
When the Realiser is off or in standby, a relay connects the analogue inputs directly to the analogue
outputs and all circuitry is out of the loop -- a fully passive bypass with no attenuation. This allows the
Realiser to remain in the analogue chain without detriment to sound quality, if that is the most
convenient wiring for the system.
If preferred, the outputs need not be connected at all for headphone listening.
Default channel assignments
The Realiser is shipped with the following default channel assignments:
