True to the Music
Radial Engineering Ltd.
8ox & 8cx Owner’s Manual
MOUNTING AND TERMINATING THE 8CX
The distinctive ‘skeletal’ frame is easy to mount using the four, pre-drilled mounting feet. When terminating the perforations around the
frame offer cable management tie-downs and built-in stand-offs allow cables to pass underneath. Tie off cable bundles at the frame to
provide strain relief at the WAGO connectors.
To ensure proper shielding from external noise it is important that the enclosure be bonded to ground (earth). Conduit installed by
electrical trades is usually bonded to the buildings main ground which is ideal for the 8cx. If you are mounting in another type of metal
enclosure ensure it has a connection to ground. If you are unsure, consult your local electrical codes.
Connecting the WAGO Terminals
The 8cx install splitter employs four WAGO spring clamp terminals to facilitate quick on-site connection. These accept wire gauges
from 14awg to 28awg and feature a clamping action that embeds the wire for a solid and dependable contact. For neat installations
that facilitates long term servicing, it’s a good idea to plan out the cable paths in advance. Always tie-off cable bundles to the 8cx frame
for strain relief.
Strip off about a quarter inch of insulation from the wire. A small screwdriver is used to push open a terminal clamp on the WAGO
connector. Insert the wire lead and let go. The wire is clamped in. Visually inspect where the wire enters the WAGO connector and
ensure that it is inserted far enough that no bare copper is exposed or can touch the wires of other channels. The pin-out legend is silk
screened on the PCB above each WAGO connector.
INTERNAL GROUNDING OPTIONS
8cx FEATURE SET
1.
Skeleton Frame
- The 9.5” x 5” frame is constructed of
14-gauge steel and serves several functions. It’s built in
stand-offs allow cable to pass underneath. It can be used
as a cable tie-down point on four sides.
2.
Radial Transformer
- Each transformer is mounted directly
on the PCB in close proximity to the input for the shortest
possible signal path.
3.
WAGO Terminal
- Used for all the I/O connection, the
WAGO terminal uses a spring clip to clamp down on the
wire for a secure termination.
4.
Ground Lift DIP Switch
- Each channel feature a ground
DIP switch that disconnects the signal ground at the DI-
RECT WITH LIFT output. It may be used to break ground
loops between devices connected to the DIRECT and aux-
iliary DIRECT WITH LIFT outputs.
1
2
3
+ - G
1
+ - G
2
+ - G
3
+ - G
4
+ - G
5
+ - G
6
+ - G
7
+ - G
8
1
2
4
5
6
7
8
9
10
3
5.
Inputs
- Eight channels of balanced signals connect to the
8cx input via WAGO spring terminal.
6.
Legends
- The PCB is clearly marked with termination
information above each WAGO terminal. All information
required for terminating is screened right on the PCB.
7.
Direct Output
- This output passes signal straight through
the 8cx and is usually the return path for phantom power.
8.
Direct with Lift
- This auxiliary output is wired in parallel
with the DIRECT output. The signal ground may be lifted
using the DIP switch to eliminate hum from ground loops.
9.
Isolated Output
- This output is transformer isolated to
block hum and buzz caused by ground loops.
10.
Military Grade PCB
- The dual layer circuit board is man-
ufactured to military standards with plated through holes.
Referring to the pins on an XLR connector:
• Connect pin-1 (GROUND) to the G terminal.
• Connect pin-2 (HOT) to the + terminal.
• Connect pin-3 (COLD) to the - terminal.
Push the white tab to
open spring clamp.
Insert bare wire here.
Repeat for each connection.
9
Summary of Contents for 8cx
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