Cadence M7000 User Manual

M7000

TABLE OF CONTENTS

INTRODUCTION

1

FEA TURES

2 - 4

INSTALLATION BASICS

4 -8

INST ALLATION WIRING

9 -12

VARIOUS IMPEDANCE WIRING

13 -14

SPECIFICA TION

15

Thank you for purchasing a Cadence Amadeus Amplifier.
The Amadeus series is a breakthrough in sound quality and design. The

amplifier features our own hybrid digital technology that was made
famous with the venerable A7HC--only we took it one step further. Not
only is the Amadeus a Digital Class D amplifier it is also capable of playing
the full range audio spectrum. (All models except the M7000 which is a
pure sub woofer amplifier.)

With this new circuitry, we have been able, to package large amounts of
power in very small heat sink chassis without any sacrifice to our
standards. You wont believe your ears, the sound will be perfectly
balanced and transparent. The sound of the Amadeus is enveloping and
surreal. You will be so totally immersed in the sound that you will imagine
yourself sitting at the front row of a concert. We have not doubt that the
Cadence Amadeus series of amplifiers will revolutionize high fidelity car
audio reproduction.

We have spared no expense in engineering, designing and building the
Amadeus Amplifiers, creating the most high fidelity, rugged, reliable and
best performing amplifiers on the market

In fact we are so sure of the quality that we backup every Amadeus
Amplifier with our exclusive two - year warranty which exemplifies our
commitment to excellence in car audio musical reproduction. (See
enclosed warranty card for details).

Please read this installation guide carefully for proper use of your
Cadence power amplifier. Should you need technical assistance during or
after your installation please call our technical-line between 9:30 AM and
5:00 PM EST at 732/370-5400.Read this entire guide fully before
attempting your installation.

WARNING BE AWARE! Use of this amplifier at extreme high volumes for
extended periods of time may cause hearing loss and or hearing damage.
During periods of prolonged high volume levels it is recommended that
you use ear safety devices. Playing Cadence amplifiers and signal
processors at high volume levels while driving will impair your ability to
hear necessary traffic sounds. While driving always keep your sound
volume at reasonable levels. We at Cadence want you listening for many
years to come.

When installing the unit, secure it tightly. An unmounted Amplifier in
your car can cause serious injury to passengers and damage to your
vehicle if it is set in motion by an abrupt driving maneuver or short stop.

1

NICKEL PLATED TERMINALS

All the terminals on the amplifier are solid brass and satin nickel plated
for high conductivity and minimum impedance loss. The power and
ground terminals are extra large and capable of accepting 4 gauge wire.
The speaker terminals can accept 8 gauge wire. When wiring the amplifier,
be sure to strip just enough wire that fits into the terminal so that bare
wires do not touch each other, or the amplifier chassis and cause a short
circuit.

POWER AND PROTECTION CIRCUITRY

Amadeus full range amplifiers feature our unique IC controlled
protection circuitry. This sophisticated circuit constantly monitors the
heatsink internal temperature and various voltages, adjusting the amp
automatically and protecting it from dangerous conditions. The 2 LEDs
located on the input side of the amplifier provide indication of the
amplifier status, and the Power LED will light Blue when the amplifier is
receiving proper power, ground and remote voltages and the IC
monitoring sequence indicates the amp is functional. In case the
amplifier encounters a diagnostic condition as listed below, the second
LED will turn RED indicating a Diagnostic condition. When a diagnostic
condition is not corrected the amplifier will eventually shut off. There are
certain critical diagnostic conditions which will turn the amplifier of
immediately.

1. Speaker short circuit.

2. Input Overload.

3.Thermal Overload.

4. Reverse Polarity.

To reset the amplifier you must first diagnose what caused the problem,
correct the fault and restart the system. See the Trouble Shooting page
for further details.

MUTE CIRCUIT

The Amadeus amplifiers feature an anti-thump, mute and delay circuit.
This eliminates irritating and speaker damaging turn-on and turn-off
transients normally experienced with less expensive amplifiers.

2

BASS DRIVE EQUALIZATION CIRCUITRY

A narrow "Q" shelving equalization circuit is included in the amplifiers.
The equalization system is preset at 45Hz. The boost control allows you to
add up to 12dB of Bass Drive effect. Utilize the Bass Drive to tailor your
bass response to your systems needs. Please keep in mind that by adding
Bass Drive you are adding stress on your speakers. Make sure that your
speakers can handle the extra power output! It would be foolish to add
12dB of gain to low excursion 8" and 10" Subwoofers.

ADR : -ACTIVE DYNAMIC REGULATION

Amadeus amplifiers feature our proprietary ADR, Active Dynamic
Regulated power supplies. 100% HexFET devices are utilized in the power
supply for high speed(100K Hz) switching frequencies. The power
supplies are capable of suppling the main amplifier with a considerable
amount of reserve voltage for peak "high demand" situations. The ADR
circuit provides full bandwidth power for authoritative bass response,
high current output into low impedance loads and increased headroom.
The ADR is supplied with power via a high speed, high temperature
capacitance bank and 100% pure copper rails on the PCB enabling fast
transient response to musical demands.

ARVA - AUTOMATIC RAIL VOLTAGE ADJUSTMENT
CIRCUITRY

Amadeus amplifiers feature "ARVA" circuitry in their power supply. This
circuit constantly monitors the output stage and under high current
demands will adjust the power supply rail voltages so that enough power
is available for peak situations. The "ARVA" also improves the damping
factor of the amplifier when playing low impedance mono loads. Cadence
Amadeus amplifiers have tighter sounding bass reproduction thanks to
this unique circuitry.

BATTERY VOLT A GE

Cadence Amadeus amplifiers are rated and regulated to 12.8 volts and
below. Increasing voltage to 14.4 volts will increase the power output of
the amplifier in the same proportion. Maximum input voltage is 16 volts
while the minimum voltage is 12 volts.

PROTECTION CIRCUITRY

Cadence amplifiers incorporate many outstanding protection circuits to
help protect the amplifier from being damaged during operating
conditions.

3

Thermal Protection: When the amplifier reaches an unsafe operating
temperature of 80 degrees Celsius the amplifier will turn off. Once the
amplifier cools down, simply reset the amplifier by its Remote
connection,(turn the amplifier off and then of again once you have given
the amplifier a chance to cool down) and the amp will once again begin to
play.

If you live in hot climate we suggest installing additional cooling fans in
your trunk to exhaust the hot air which can build up in the trunk this will
help keep the ambient temperature in the trunk as low as possible so that
your amps work flawlessly and without any musical interruption.

Speaker Short Circuit Protection: Should your speakers short circuit
due to voice coil burn out, or should the amplifier sense an impedance
too low to handle, the Protection LED will light, indicating a diagnostic
condition. Turn off your system, disconnect one speaker at a time and try
to determine which speaker might be faulty. Correct the condition and
restart the amplifier. You must reset the amplifiers by turning off and then
on by the Remote power for proper operation after correcting a
diagnostic condition.

Clipping or total shutdown may also be a result of a bad ground
connection or loose ground. If you find that your speakers and speaker
wires are not shorted, please check your ground connection.

Input Overload Protection: This circuit will either shutdown the
amplifier completely or make the amplifier spurt on and off indicating
that it is in a diagnostic condition. Turn the system off and reduce the gain
on the amplifier or volume from your head unit, this should result in a
corrected condition.

DC Offset Protection: Should any DC voltage try to enter the amplifier via
the speaker terminals it will cause the amplifier to shut down and not
operate until this condition is remedied. This circuit will also protect
damaging high DC voltages from reaching your speakers should you
amplifier ever miss-function.

INSTALLATION BASICS

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 system only.

4