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ZRS C4 CONTROLS
4-Channel Band Pass Configuration.
The ZRS C4 features a unique band pass system where by channels 1 and 2 can be configured to a band pass system while separately
setting channels 3 and 4 to their own band pass frequencies. This band pass system is especially useful when installing multiple midrange
and tweeter speakers. Please see below for detailed instructions.
The ZRS C4 amplifies
features advanced input
gain control from 0.3 volts
to 7 volts so that it can
operate efficiently and at
full power from any head
unit pre amp signal.
High end Tiffany Style RCA
connectors are used for the preamp
inputs ensuring tight loss-less signal
connections for ensured high fidelity.
RCA PREAMP
INPUT
INPUT
GAIN CONTROL
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 diag nost ic
condition from thermal
over load or speaker short
circuit the LED will light
and amp will shut down.
POWER & DIAGNOSTIC
LED INDICATORS
Channels 3 and 4 electronic crossover features
sophisticated Linkwitz-Riley 24dB Low Pass filter
circuitry. The 24dB filter ensures a steep cutoff of high
frequencies and assists the amplification circuitry
emphasize its power output in the set frequency range
thereby increasing the audio spectrums headroom.
24dB LOW PASS
CROSSOVER SLOPE
CONNECTION
TERMINALS
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 300mV to 7Volts.
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!
Set Channels 1 and 2 Crossover Switch to BPF (Band
Pass Filter) and adjust the HPF (High Pass Filter) knob to
the frequency you wish to choose to block low frequency
signals. In the drawing below we set the knob to
approximately 30Hz. Set the LPF (Low Pass Filter) to the
frequency you wish to choose to block high frequency
signals, we chose 300Hz. Now channels 1 and 2 will only
play signals between 30Hz and 300Hz.
Set Channels 3 and 4 Crossover Switch to BPF (Band
Pass Filter) and adjust the HPF (High Pass Filter) knob to
the frequency you wish to choose to block low frequency
signals. In the drawing below we set the knob to
approximately 30Hz. Set the LPF (Low Pass Filter) to the
frequency you wish to choose to block high frequency
signals, we chose 300Hz. Now channels 1 and 2 will only
play signals between 30Hz and 300Hz.
4-Ohm
Midrange
4-Ohm
Midrange
4-Ohm
Midrange
4-Ohm
Midrange
The Band Pass Setting is especially useful when setting
up component speakers where you want to activly block
low frequencies from reaching your midrange speakers
and tweeters and for multiple midrange speaker
installations. When using a 3-way amplifier system
installation, the ZRS C4 is the perfect midrange/midbass
power amplifier.
Channels 1 and 2 electronic crossover features
sophisticated 12dBHigh Pass filter circuitry. The 12dB
filter ensures a more gradual cutoff necessary for front
speaker stages and tweeters where frequency overlap
is critical for high quality sound reproduction,
12dB HIGH PASS
CROSSOVER SLOPE
The ZRS C4 features heavy duty bolt down terminals,
the power and ground terminals accept 4 gauge wire
while the speaker terminals can accept 10 gauge wire.
Super heavy-duty heatsink
guarantees that your amplifier
will stay cool no matter how
h a r d y o u p o u n d i t .
Com put er ize d th erm al
protection circuitry guarantees
the amplifiers stability.
HEAVY DUTY
HEATSINK