User manual PYRAMID PS32LAB

[. . . ] Then connect the other end of this wire to the ground terminal on the mixer or preamplifier enclosure. BALANCED INPUTS HOT(+) COLD(-) GND Stereo or Mono Inputs Your PYRAMID XPA amplifier can be operated in Stereo, Mono or Bridged mode, depending on the input source. If the input signal is mono, slide the Stereo/Mono/Bridged selector switch to MONO and the signal will be routed through both channels. [. . . ] If you wish to run the amplifier in bridged output mode, slide the switch to Bridged. PREAMP OR MIXER OUTPUTS POWER CONSUMPTION : 500 W ~AC iN 115/230V-60/50 Hz INPUTS CH-2 BRIDGE CH-1 STEREO BRIDGE MONO VOLTAGE CH-1 CH-2 CH-1 GND GROUND LIFT CH-2 LIFT FUSE T4 AL 250V for 110~120V T2 AL 250V for 220~240V Your New PYRAMID XPA series P. A. Amplifier gives you the power and versatility you need in a professional sound system. The amplifier's wide frequency response makes it suitable for amplifying music or vocal program material. It can be used for live bands, office paging systems, public announcements, or a variety of other installations. 1 2 2 2 2 2 2 3 3 3 3 3 3 3 4 LOW CAPACITANCE SHIELDED WIRE Speaker connections You can connect 4 Ohm, 8 Ohm or 16 Ohm speakers to Channel 1 and/or Channel 2 of the amplifier. If you connect two pairs of speakers, be sure to follow these guidelines: · Speakers which are connected to the same channel are part of a pair, and must be of the same impedance. · Speakers connected to different channels are NOT part of a pair, and can be of different impedances. Prepare the speaker wire by removing about 1 inch of insulation from the end of the speaker wire you intend to connect to the amplifier. Tightly secure four mounting screws (not supplied) through these fours slots and into your standard electronics equipment rack. 20 Hz to 20 kHz, 8 Ohms 1 kHz, 4 Ohms Maximum Power, 8 Ohms Maximum Power, 4 Ohms Peak Power, 8 Ohms XPA-240 20 k-Ohms (10 k-Ohms) 20 k-Ohms (10 k-Ohms) XPA-360 XPA-480 20 k-Ohms (10 k-Ohms) MONO OPERATION SWITCH IN "MONO" POSITION Connecting to standard AC power After making all other connections, set the POWER switch to OFF position. Then connect the power cord to a standard AC outlet. 70W x 2 100W x 2 110W x 2 130W x 2 800W x 2 120W x 2 160W x 2 170W x 2 200W x 2 1200W x 2 170W x 2 220W x 2 230W x 2 260W x 2 1600W x 2 CH 2 CH 1 Bridged Mode 20 Hz to 20 kHz, 8 Ohms 1 kHz, 8 Ohms Peak Power B A L AN C ED I N P UT S HOT(+) COLD(-) GND INPUTS OUTPUTS VOLTAGE POWER CONSUMPTION : 500 W CH-2 CH-1 CH-2 CH-1 ~AC iN 115/230V-60/50 Hz BRIDGE 200W x 1 200W x 1 2400W x 1 0. 1% 10 Hz to 50 kHz 1. 0V 100 dB 4-16 Ohms 8-16 Ohms 320W x 1 320W x 1 3600W x 1 0. 1% 10 Hz to 50 kHz 1. 0V 100 dB 4-16 Ohms 8-16 Ohms 120 VAC, 60 Hz / 230 VAC, 50 Hz 440W x 1 440W x 1 4800W x 1 0. 1% 10 Hz to 50 kHz 1. 0V 100 dB 4-16 Ohms 8-16 Ohms CH-1 MONO STEREO BRIDGE GND GROUND LIFT CH-2 LIFT FUSE Turning the amplifier on 1. Turn on the audio input source equipment which is connected to the amplifier INPUT jacks. THD at rated output power Frequency Response +/­ 3 dB Input Sensitivity for rated output power Signal-to-Noise Ratio A-Weighted Speaker Impedance Stereo Bridged MONO SIGNAL SOURCE USE CHANNEL 1 INPUT ONLY 2. Set the amplifier's Channel 1 and Channel 2 output level gain controls to the minimum level settings. Do not use balanced and unbalanced inputs simultaneously!! Using the power LED meters The meter pointer position indicates the amplifier output power. For ease of reading in dark environments, the meter is illuminated. Bridged Mode Operation This amplifier can operate in a mono bridged output mode, if your speakers can handle the following power output levels: Power Requirement Dimensions H x W x D, inches (mm) XPA-240: XPA-360: XPA-480: Using the Channel 1 and Channel 2 Output Level controls Rotate output level gain clockwise to increase, or counterclockwise to decrease the output power. To get the best performance with the least sound distortion, always adjust the output level gain so the meter's pointer does not continuously exceed the extreme right of the meter's scale. 2400 watts 3600 watts 4800 watts 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 16. 7 Ibs (7. 6) 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 18. 5 Ibs (8. 4) 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 20 Ibs (9. 1) As shown in the diagram below, connect the speaker's positive (+) to the amplifier's red speakers left (1/2) terminals and negative (-) to red speakers right (1/2) terminals. [. . . ] To get the best performance with the least sound distortion, always adjust the output level gain so the meter's pointer does not continuously exceed the extreme right of the meter's scale. 2400 watts 3600 watts 4800 watts 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 16. 7 Ibs (7. 6) 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 18. 5 Ibs (8. 4) 3 15/32 x 19 x 10 11/16 (88 x 482 x 271) 20 Ibs (9. 1) As shown in the diagram below, connect the speaker's positive (+) to the amplifier's red speakers left (1/2) terminals and negative (-) to red speakers right (1/2) terminals. CAUTION: It is possible to overdrive the amplifier by setting output level gain too high, which may cause damage or failure. Weight, lbs (kg) The speaker right (+) on the amplifier is used as a negative (-) terminal for a bridged connection. MONO BRIDGED OPERATION Under normal conditions, the amplifier's clip indicator will flicker as the output power momentarily exceeds the level as set by the output level gain selector. SWITCH IN "BRIDGED" POSITION About the internal protect circuitry Special clip circuitry incorporated into your PYRAMID XPA amplifier's design protects the amplifier and speaker system from being damaged from overdriving power. DO NOT USE BLACK TERMINALS B A L A NC ED I N P UT S However, under excessive output conditions, the protect indicator lights remain on continuously, alerting you that the special clip circuitry has become active. [. . . ]