True to the Music
Radial Engineering Ltd.
Workhorse User Guide
3
INTRODUCTION
The Workhorse is an eight channel card frame and mixer designed
for 500 series modules. Up to eight modules may be used at any
one time. Once ‘plugged in’, the Workhorse automatically routes
the module’s signal to the XLR, ¼” and D-sub connectors on the
rear panel via a 15-pin card-edge connector and receptacle. Radial
modules and those that have been designed by other manufacturers
to take advantage of the Workhorse’s extra features will enjoy the
added convenience of having the signal sent to the internal mix buss
and the built-in 8x2 stereo summing mixer. For older generation
modules, the individual channel outputs can be routed to the
summing mixer using a D-sub cable affording them much the same
functionality as newer Radial designs.
INPUT
OMNIPORT
OUTPUT
OUT
IN
CARD SLOT 1
CARD SLOT 2
CARD SLOT 3
CARD SLOT 4
CARD SLOT 5
CARD SLOT 6
CARD SLOT 7
CARD SLOT 8
EXPANSION
BUSS
LEFT IN RIGHT IN
-10dB
Mix Buss
+4dB
+4dB
JENSEN
TRANSFORMERS
Mixer Control Section
Master Stereo Buss
1/4” TRS - TIP SEND / RING RETURN
INSERT
INSERT
LEFT RIGHT
MON
OUT
LEFT RIGHT
MAIN
OUT
LEVEL PAN
CLIP
CLIP
CLIP
CLIP
CLIP
CLIP
CLIP
CLIP
LEVEL PAN
LEVEL PAN
LEVEL PAN
LEVEL PAN
LEVEL PAN
LEVEL PAN
LEVEL PAN
MONITOR
LEVEL
MAIN
LEVEL
MONO
HEADPHONE
EXPANSION
BUSS
LEFT OUT RIGHT OUT
SUMMING MIXER INPUTS
OUTPUTS 1~8INPUTS 1~8
SIGNAL FLOW
The signal fl ow chart above shows the basic signal routing that the
Workhorse provides. Flowing from left to right, the signal comes into
the Workhorse via the rear panel XLR female and ¼” TRS connector.
Once the signal goes into a module, it is then sent back out after it is
processed to the male XLR and ¼” TRS. This of course happens on
all eight channels. Simultaneously, Radial modules send the signal
to the internal mix buss which feeds the mixer.
After the signal has been panned left or right, it can go to the
expansion buss if feeding a second Workhorse. It is then fed into the
master output stage where it is once again buffered and sent to the
main, monitors and headphones. Note the main outputs are Jensen
transformer isolated. The next section in this manual discusses
each feature in detail following the signal fl ow.
