User manual CROWN LPS-1500

[. . . ] Andrew Stump Title: Senior Vice President of Manufacturing Due to line current harmonics, we recommend that you contact your supply authority before connection. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or groundingtype plug. A polarized plug has two blades with one wider than the other. [. . . ] NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Designed to fit into a standard 19-inch equipment rack, the unit takes up only two rack spaces. Secure this unit with four rack-mount screws and cup washers. For optimum cooling, rack amps without spaces between them. If amps are racked with spaces between them, solid non-vented rack panels are recommended between amps. provide standard rack-mount clearance of 2 inches on each side and 5 cm in the rear. This unit comes with a variable speed fan that auto-adjusts fan speed depending on the temperature of the unit during operation. Airflow is front to back, so do not place any object that may prevent heat from exiting the unit from its back vent. Ongratulations on your purchase of a Crown® LPS power amplifier. All three models in the series are powerful, rugged and reliable. They are suited for applications such as churches, concert tours, stages, disco, pubs, or any place that requires amplifier installation. Power LED: Blue LED illuminates when amplifier is on. Volume Control: Sets output level of each channel. Only the Channel 1 Volume Control works in Bridge-mono mode. Only the Channel 1 Volume Control works in Bridge-mono mode. PARALLEL WIRING USING THE SPEAKON® CONNECTORS With this wiring, a signal sent to Channel 1 is paralleled to both channels so that it is reproduced by both speakers. PARALLEL WIRING USING THE BINDING POST CONNECTORS With this wiring, a signal sent to Channel 1 is paralleled to both channels so that it is reproduced by both speakers. Frequency Reponse (at 1 watt) Total Harmonic Distortion (THD) Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from full rated output to ­30 dB Slew Rate Voltage Gain Damping Factor (8 ohms), 10 Hz - 400 Hz Signal-to-Noise Ratio (below rated power, 20 Hz to 20 kHz, A-weighted Crosstalk (below rated power) At 1 kHz At 20 kHz Input Sensitivity for full rated power at 4 ohms Input Impedance (nominal) Balanced Unbalanced > 20V/s 32 dB 40 Hz - 20 kHz, +0/­3 dB < 0. Input Connectors Output Connectors (Speaker Connectors) Front Panel Controls Rear Panel Controls Power Indicator Signal Indicator Clip (peak) Indicator Fault Indicator One balanced XLR for each channel Speakon® and one pair binding post for each channel Power on/off switch, one gain control per channel Output mode switch: stereo (dual), parallel or bridge One blue LED One green LED per channel One red LED per channel Red LED, one per channel, indicates channel shutdown Stable into reactive or mismatched loads Flow-through ventilation from front to back Internal heat sinks with forced air. [. . . ] ) HOW TO OBTAIN WARRANTY SERVICE You must notify us of your need for warranty service within the warranty period. All components must be shipped in a factory pack, which, if needed, may be obtained from us free of charge. Corrective action will be taken within a reasonable time of the date of receipt of the defective product by us or our authorized service center. If the repairs made by us or our authorized service center are not satisfactory, notify us or our authorized service center immediately. [. . . ]