Cadence QRS SERIES Installation Guide download pdf (Page 3)

FEATURES

POWER AND PROTECTION CIRCUITRY:

QRS Series ampliers feature our unique IC controlled protection circuitry. This sophisticated circuit constantly monitors the heat sink internal temperature and various

voltages, adjusting the amp automatically and protecting it from dangerous conditions. The 2 LED’s located on the side of the amplier provide indication of the amplier

status, the Power LED will light when the amplier is receiving proper power, ground and remote voltages and the IC monitoring sequence indicates the amp is functional. In

case the amplier encounters a diagnostic condition as listed below, the second LED will light indicating a Diagnostic condition. When a diagnostic condition is sensed the

amplier will then turn into a self preservation mode and if the cause of the diagnostic condition is not corrected will eventually shut down. There are certain critical diagnostic

conditions which will turn the amplier off immediately.

1. Speaker short circuit.

2. Input Overload.

3. Thermal overload.

4. Reverse Polarity.

To reset the amplier, you must rst diagnose what caused the problem, correct the fault and restart the system.

MUTE CIRCUIT:

The QRS Series ampliers feature an anti-thump, mute and delay circuit. This eliminates irritating speaker damaging turn-on and turn-off transients normally experienced with

less expensive ampliers.

BASS EQUALIZATION CIRCUITRY:

A narrow “Q” shelving equalization circuit is included in the ampliers. The equalization system is preset at 45Hz. The boost control allows you to add up to +12dB of Bass EQ

effect. Utilize the Bass EQ to tailor your bass response to your systems needs. Please keep in mind that by adding Bass EQ you are adding stress on your speakers. Make sure

your speakers can handle the extra power output! It would be foolish to add 18dB of gain to low excursion 8” and 10” Sub woofers or mid ranges and tweeters. It’s a sure way

to blow your speakers. The Bass EQ was designed for High Power sub woofers.

“ADR”: - ACTIVE DYNAMIC REGULATION

Cadence QRS Series ampliers feature our proprietary ADR, Active Dynamic Regulated power supplies. 100% HexFET devices are utilized in the power supply for high speed

(100KHz) switching frequencies. The power supplies are capable of supplying the main amplier 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.

Features

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Cadence QRS SERIES Installation Guide Page 3

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