OWNER’S MANUAL CPS 3 / CPS 4 CONTRACTOR PRECISION SERIES
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance.
DESCRIPTION CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT PANEL 1. Level Control To prevent unauthorized operation of the level controls on the CPS3 and CPS4, they are provided with screwed-on protective cover lids. When shipped from the factory, the detented potentiometers are set to their clockwise limits. Thus, the input signal is not attenuated. In case matching the input levels is required, you first have to detach (unscrew) the cover lids to gain access to the potentiometers. 2. POWER ON INDICATION This LED lights up when the mains switch is pressed.
REAR PANEL POWER AMPLIFIER INPUTS Parallel to the XLR-type inputs, output connectors are provided, offering the opportunity to feed additional power amplifiers with the same signal. The inputs are electrically balanced with pin-assignment according to the IEC 268 standard. Pin-assignment of the XLR-type input connectors: PIN 1: PIN 2: PIN 3: SHIELD a, + b, - Input sensitivity is factory set to 0 dBu. The power amplifier can be set internally to +6dBu input sensitivity or to +26dBu gain.
REAR PANEL POWER AMPLIFIER OUTPUT CONNECTORS SPEAKON output connectors are provided for the power amplifier channels A (left) and B (right). The Bridged Out Connector for bridged operation is sealed with a plastic cover to prevent connection errors. LIMITER The time constant of the built-in limiter to avoid overdriving is adjustable. Position “SLOW” is the factory preset and this should also be the normal position.
SPECIFICATIONS Technical Specifications: CPS3, CPS4 Amplifier at rated conditions, both channels driven with 8 ohms loads, unless otherwise specified. CPS3 CPS4 Load Impedance 8Ω 4Ω 2Ω 8Ω 4Ω Maximum Midband Output Power THD=1%, 1kHz 560W 900W 1200W 850W 1300W 1800W Rated Output Power THD< 0.1%, 20Hz ...
BLOCK DIAGRAM 20
ABMESSUNGEN/DIMENSIONS Abmessungen/Dimensions (in mm) 21
