4
SUPER CLASS AB AUDIO STAGE PERFORMANCE
The audio output section of the QRS Series ampliers feature Japanese studio grade, high current Bipolar audio transistors. Unlike other manufacturers who use a host of
different type of transistors, not originally designed for audio output, i.e.: power supply transistors, motor control transistors to produce the audio signal (you can only imagine
what they sound like.) Cadence uses only true audio transistors in the audio section of these ampliers. These transistors were designed and engineered to produce music.
That’s why Cadence ampliers clearly sound better. They are cleaner with lower distortion, higher current capable and more reliable. We challenge you to test listen a Cadence
amplier and hear the difference yourself.
PROTECTION CIRCUITRY:
Cadence ampliers incorporate many outstanding protection circuits to help protect the amplier from being damaged during operating conditions.
Thermal Protection: When the amplier reaches an unsafe operating temperature of 80 degrees Celsius the amplier will turn off. Once the amplier cools down, simply reset
the amplier by its Remote connection, (turn the amplier off and then on again once you have given the amplier a chance to cool down) and the amp will once again begin
to play.
If you live in a 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 awlessly and without any musical interruption.
Speaker Short Circuit Protection: Should your speakers short circuit due to voice coil burn out, or should the amplier 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 amplier. You must reset the amplier by turning it OFF and then ON again by the Remote power connection after correcting a diagnostic condition. (Turn your
radio off and then on again.)
Clipping or total shutdown may also be a result of a bad ground connection or loose ground. If you nd that your speakers and speaker wires are not shorted, please check
your ground connection.
Input Overload Protection: This circuit will either shutdown the amplier completely or make the amplier spurt on and off indicating that it is in a diagnostic condition. Turn the
system off and reduce the gain on the amplier or volume from your head unit, this should result in a corrected condition.
DC Offset Protection: Should any DC voltage try to enter the amplier via the speaker terminals it will cause the amplier 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 your amplier ever malfunction.
Features
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