Sennheiser EW 112 G3 Owner's Manual

20

1.  Rack mount your gear. The GA3 rack adapter can accommodate two half-rack sized units, such as 

a receiver, a splitter, or an AM2 kit (which includes two front mounts for antennas). Consider how 
many channels you will need, and select the appropriate number of GA3 units (see the sample draw-
ings on the following pages to get an idea of how this works). 

2.  Determine whether you will need an antenna splitter(s) based upon the number of channels you 

require.  A rule of thumb is that you will need a splitter for every four channels.  If doing more than 8 
channels, you will need to group them in groups of 4, or 8 units with another “master” ASA1 which 
takes the feed from the antennas.  Another great advantage which splitters offer is that they will 
provide DC power to the receivers right through the connection cable.  A single splitter will power up 
to four receivers. 

3.  Determine where you wish to place your antennas. If you wish to keep them at your rack, you will 

need an AM2 kit for every splitter you have, unless you optimize the cascading feature of the splitter, 
which allows the operation of eight receivers of the same frequency range from one pair of antennas. 
An AM2 it front-mounts two antennas, and takes a total of 1/2 a rack – keep this in mind when con-
figuring your system. If, instead, you wish to remote-mount your antennas to increase the coverage 
area, you will need to utilize A 1031-U antennas, which are typically mounted to mic stands or WM1 
wall mounts. Since the antennas will be used away from the rack, it is not necessary to use AM2 kits.

Considering the number of individual items required to rig an evolution wireless G3 receiving antenna 
splitter system, we have put together seven packages to make ordering these items simpler. These 
packages address seven common scenarios. 

NOTE: The antennas supplied with all ew rack-mountable receivers are to be used only in chassis-mounted 
(rear jacks), or in conjunction with the AM2 front-mounting kit. These are ground plane devices and are never 
to be used as a remote antenna solution on the end of a cable.

Due to the variables in one installation to another, the following items are not included with Sennheiser 
splitter/combiner kits.  It is suggested you check and see if you may require any of the following:

• GA3 rack mounts (which are not included with 100 series) 
• RG58 cable to run to your antennas 
• Mounting brackets for remote antennas 
• Rack screws

The following is a list of splitter and antenna kits that Sennheiser currently offers for G3 units:

Active splitter kit for four receiver 
system using omni-directional 
remote paddle antennas, includes 
ASA1/NT, two A1031-U, GA3

G3OMNIKIT8 
Active splitter kit for eight receiver 
system using omni-directional 
remote paddle antennas, includes 
two ASA1/NT, two A1031-U, GA3, 
two BB1

G3DIRKIT4 
Active splitter kit for four receiver 
system using directional remote 
paddle antennas, includes ASA1/NT, 
two A2003-UHF, GA3

G3DIRKIT8 
Active splitter kit for eight receiver 
system using directional remote 
paddle antennas, includes two 
ASA1/NT, two A2003-UHF, GA3, two 
BB1

G3FRONTKIT4 
Active splitter kit for four receiver 
system using front-mount anten-
nas, includes ASA1/NT, GA3, AM2

G3FRONTKIT8 
Active splitter kit for eight receiver 
system using front-mount anten-
nas, includes two ASA1/NT, two 
GA3, AM2, two BB1

ASA1/NT 
Active antenna splitter with DC 
power distribution for G3 receivers, 
includes required NT1-1 US power 
supply and eight 20" BNC cables

AC3/NT 
Active antenna combiner with DC 
power distribution for IEM transmit-
ters, includes required NT3-1-US 
power supply and four 20" BNC 
cables

G3IEMDIRKIT4 
Active combiner kit for four IEM 
transmitters with DC power dis-
tribution, includes AC3/NT, GA3, 
A2003-UHF