True to the Music
Radial Engineering Ltd.
Space Heater™ User Guide
6
CONNECTIVITY
CHANNEL INPUTS - ¼” TRS
The Space Heater is equipped with balanced ¼” TRS (Tip-Ring-
Sleeve) input jacks for all eight channels. These inputs are set to
+4dBu nominal line level for optimal performance. We recommend
that +4dBu balanced signals be maintained throughout the system.
CHANNEL OUTPUTS - ¼” TRS
While there are no dedicated ¼” connectors for the individual channel
outputs, the INSERT SEND jacks can be used for this purpose. The
signal is tapped just after the output transformer on each channel,
making it identical to the DB25 channel output connector.
INSERT POINTS - WHAT TO CONNECT:
The Space Heater is equipped with both send and r4dBu
balanced insert jacks. This makes it suitable for connection to a
wide array of professional audio equipment that would traditionally
be used with an analog recording console or live sound mixer. The
Space Heater’s insert points are the last step in each channel’s signal
fl
ow diagram (after the level control and output transformer). This
makes them particularly well suited for connection to equalizers or
compressors when using the Space Heater for summing during mix
down, but they can also be used with other stand alone processors
or effects units.
CHANNEL INPUTS - DB25
The Space Heater is also equipped with a DB25 input that is
connected in parallel to the ¼” TRS input Jacks. This allows for easy
connection to many audio interfaces such as Avid’s HD I/O.
CHANNEL OUTPUTS - DB25
Individual channel outputs are routed to a DB25 connector. A
standard 8 CH DB25 to TRS or DB25b cable is used to interface
with different studio setups.
TO MIXER OR DAW
SEND USED FOR OUTPUT
FROM MIXER
OR DAW
PROTOOLS
INTERFACE
OUTPUTS
INPUT
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PROTOOLS
INTERFACE
Insert
Send/Receive
Output
Bus
ON
OFF
Transformer
OUTPUTS
INPUT
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INPUT
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Q3
EQ
KOMIT
COMPRESSOR
PROTOOLS
INTERFACE
INPUT
INPUT
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INPUT
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INPUT
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When using the Space Heater as an effect on individual channels, the
insert jacks can be used as a patch bay. This can be convenient for
connecting other pieces of equipment to your signal chain while already
in the analog domain, or to simply use the insert “SEND” jack as a
parallel output for recording or processing elsewhere. Keep in mind that
the insert jacks are still the last step in the Space Heater’s signal path,
so any equipment inserted will be processing the wet sound.
