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ZRS C9 CONTROLS
2-Channel Bridged Mono Configuration - with CLONE FUNCTION.
The ZRS C9 features a unique CLONE FUNCTION to assist in setting up a 2-channel bridged system with perfect gain and crossover
tracking between the speakers. Typically when setting up a system you would need to set channels 1- 2 and then channels 3 - 4 crossovers
and gains separately, not guaranteeing perfect balance or frequency cutoffs. By using the CLONE FUNCTION you can control channels 1 - 2
from the processed signals of channels 3 - 4 thereby guaranteeing that all 4 channels are getting identical voltages and have their crossover
settings at identical frequencies. Here is how you do it.
If your head unit has only one
pair of RCA outputs, plug
these in to channels 1 - 2 and
set the mode switch to 2CH.
If your head unit has two
pairs of RCA outputs,
plug these in to all 4 of
the amplifiers RCA
inputs and set the mode
switch to 4CH.
Set the Crossover mode switch to
CLONE 3/4 CH. This will send the
processed signal of channels 3 and 4
to channels 1 and 2.
Now all controls for channel 1 - 2 will
be non functional. All crossover
settings, gains, subsonic, bass focus,
bass boost, frequency multipliers, and
crossover slopes will be controlled
from channels 3 - 4.
All ZRS Type C amplifiers
feature advanced input
gain control from 0.2 volts
to 9 volts so they can
operate efficiently and at
full power from any head
unit pre amp signal.
The preamp output is a
full range signal mixed
from all 4 input channels.
Use this signal to feed a
secondary mono block
amp in your system.
RCA PREAMP
OUTPUT
INPUT
GAIN CONTROL
The remote bass control
functions on channels 3
and 4 only. When using
the CLONE function, the
bass remote will function
on both bridged channels.
Use only cable supplied
with the remote for
connection.
ZRS amplifiers feature
s o p h i s t i c a t e d I C
controlled protection
circuitry. If the amp goes
in to a di agn osti c
condition from thermal
over load or speaker short
circuit the LED will light
and amp will shut down.
DASH MOUNT
BASS REMOTE
POWER & DIAGNOSTIC
LED INDICATORS
The ZRS C9 features our
exclusive BASS FOCUS circuitry
which works as a variable Q
control at the Subsonic Filter
setting. By supplying up to 7dB of
boost you can compensate for
drivers in too small enclosures so
a 10” woofer can sound like a 12”
woofer and a 12” woofer can
sound like a 15” woofer. Small
dash and door speakers will also
benefit and will actually increase
their power handling capabilities.
ADJUSTABLE SUBSONIC
WITH BASS FOCUS
Channels 3 and 4 can be set
to play Low Pass, Band
Pass, High Pass or Full
Range my means of the
control switch. When mono
bridging the amplifier you
can achieve a 24dB per
octave slope by setting the
switch to the MONO/24dB
position. For HPF/Full
R a n g e 1 2 d B i s t h e
selectable slope.
24dB CROSSOVER
SLOPE
CROSSOVER
FREQUENCY MULTIPLIER
The ZRS C9 features in both
channels 1-2 and 3-4 fully
adjustable crossovers. In order to
make the crossover frequencies
more accurate, we split the
ranges from 45Hz to 450Hz and
then added a 10 times (X)
Frequency Multiplier switch that
changes the frequency range to
450Hz-4.5KHz. This is especially
useful when setting up 3 channel
systems requiring a wide range of
frequency settings.
Before you begin with your installation, disconnect the NEGATIVE (-) terminal from your car's battery. This safety precaution will avoid possible short circuits while wiring your amplifier.
Cadence amplifiers operate on 12-volt negative ground systems only.
It is recommend that you layout your sound system design on paper first. This will help you during the installation so that you will have a wiring flow chart and not miss-wire any of your
components.
Mount the amplifier in the trunk or hatch area of your vehicle. Never install an amplifier in the engine compartment or on the firewall. Please be sure to leave breathing room around the
amplifier heat sink so that it can dissipate the heat it produces efficiently. The amplifier can be installed either horizontally or vertically.
When mounting the amplifier on the trunk floor, be sure to watch for your gas tank, gas lines and electrical lines. Do not drill or mount any screws where they might penetrate the gas tank of
your car.
Once the system is operational, the first thing to do, is set all crossover points to approximate settings. In the case of the basic sub woofer system Low Pass filter crossover at 100 Hz or so.
Set the Bass Boost equalizer controls to 0 dB ( Flat Switch Position.)
Now you should set the amplifiers Input Sensitivity adjustment. The knob accessible on the side of the amplifier marked INPUT GAIN adjusts the input sensitivity from 200mV to 9Volts.
To adjust the input sensitivity, turn the control using a small flat head screwdriver fully counter clock wise to the minimum position. Do not apply any pressure while turning as this might
break the control unit. Adjust your radio volume level to maximum volume. Now turn the level control on the amplifier clockwise towards the Maximum marking until audible distortion
occurs. When you begin to hear any distortion in the sound, back down one notch and your amp is set. It is helpful to have a second person to help you set the gain.
When setting up a multi-amp system, set each amplifier’s gain separately. Start off with the bass amplifier, then adjust the highs amplifier’s level control to match.
Once you are satisfied with the level control settings, use any equalizer controls to adjust the system tonal level for personal preference. Keep in mind that after equalizing, you may have to
go back and reset the amplifiers level controls.
The level control of any car amplifier should not be mistaken for a volume control. It is a sophisticated device designed to match the output level of your source unit to the
input level of the amplifier. Do not adjust the amplifier gain to maximum unless your input level requires it.
Your system can also be extremely sensitive to noise when the LEVEL is set to maximum and does not match your input signal. The gain adjustments need to be made only once when first
setting up the system.
If your unit has been professionally installed please do not change the gain settings set by the installer, he is the professional!