Supplied CM12LFilter Module
Product Description: The CM12Lis a 12 dB per octave low pass filter network. This supplied mod-
ule is designed to be plugged into any accessory port tower on the 301a amplifier. Frequency adjust-
ment is via a 12 pin, plug-in resistor SIP (Single In-line Package). A 90 Hz SIP is factory installed and
an additional 13 crossover frequency SIPs are available from your Authorized Xtant Dealer.
Adding Accessory Modules: The 301a is equipped with three accessory docking ports. Two ports
are dedicated to the amplifier and are labeled Amp Vert/Horiz Acc. Port and Amp Vert. Acc. Port.
The third is dedicated to the RCA output signal and is labeled Line Out Vert. Acc. Port. Xtant offers
two types of accessory modules which are designed for either “Horizontal” or “Vertical” mount-
ing. The docking port labeled Amp Vert/Horiz Acc. Port will accept any of the modules, while the
ports labeled Vert will only accept modules designed for vertical mounting. The following is a list
of Xtant Accessory Modules including their “Horizontal” or “Vertical” mounting design:
XTANT ACCESSORY MODULES
Model Function Mounting Model Function Mounting
CM 24x Xover Horizontal CM12HXover Vertical
PQM 1 EQ Horizontal CM12LXover Vertical
LFQ 45 Bass EQ Vertical NGM 1 Noise Gate Horizontal
RGM 1 Remote Gain Vertical
Installation: The CM12Linstalls on any of the three acces-
sory port towers located on the 301a’s printed circuit
board. Simply remove the port jumpers and plug the
module in vertically. Be sure to observe the orientation of
the “keyed” right angled header connector before
attempting to insert the CM12Lonto a port tower.
Applications: The CM 12L filter module may be used alone or in combination with other Xtant
modules. Here are a few examples of how the CM 12LModule may be applied:
Low Pass Amp: CM12Lin Amp Vert. Acc. Port.
Low Pass RCA Out: CM12Lin Line Out Vert. Acc. Port
Low Pass + EQ Amp: CM12Lin Amp Vert. Acc. Port plus
PQM 1 EQ in Amp Vert/Horiz Acc. Port
Band Pass Amp: CM12Lin Amp Vert/Horiz Acc. Port. plus
CM12H(High Pass) for amp in Amp Vert. Acc. Port
24 dB High Pass for Amp: 2 – CM12Lset at same frequency
in Amp Vert. Acc. Port and Amp Vert/Horiz Acc. Port Accessory Port Tower
LOCATING “KEY”
RIGHT ANGLE
HEADER CONNECTOR
CIRCUIT BOARD
Xtant Technologies • 7676 South 46th Street • Phoenix, Arizona • 85040 • 602 431 8686
