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D e s c r i p t i o n IPA 1502/752 Industrial Power Amplifiers The IPA 1502 and 752 are high-quality industrial-grade audio amplifiers. Designed for flexibility in application these amplifiers represent the latest state-of-the-art technology in amplifier design. Powerful yet easy to use the new IPA series delivers amazing sonic performance. Low-noise design and features applicable to real world situations make these units ideal for audio applications where a powerful yet compact amplifier with multiple input and output capabilities are required. We feel that the best way to fully enjoy any purchase is to have an in-depth understanding of the product s features functionality and performance characteristics. We hope this manual along with the manuals of our other products will provide this. If you require additional information not provided in this manual please let us know or check out our website at: www. p e a v e y.com. We are continuously looking for better ways to provide information about our products and your input is always appreciated. If you have a comment about this manual or would like to make a suggestion please write to: Peavey Electronics Corp. Architectural Acoustics Division 711 A Street Meridian MS 39301. Thank you for using Peavey Architectural Acoustics. F e a t u r e s One plug-in module port: allows for any single- or double-space MMA module Input control for MMA input modules on rear panel Balanced screw terminal bridging input Input sensitivity control for bridging input on rear panel Switchable 60Hz 4th order high-pass filter Priority/Muting system with internal signal override Remote volume control capability Preamp output and power amp input loop for external processing equipment or auxiliary output Front panel master level control Amplifier signal indicator SPS (Speaker Protection System) circuitry with indicator Power indicator 4 Ohm direct output 8 Ohm 25V and 70V transformer-isolated power outputs (IPA 1502 120V only) 8 Ohm 70V and 100V transformer-isolated power outputs (IPA 1502 230V only) 8 Ohm (25V) 70V and 100V transformer-isolated power outputs (IPA 752) Optional rack-mounting with included rack ears 4
12. Power Amplifier Input: This input provides a direct input to the power amplifier with an input sensitivity of 1V. Using the Preamplifier Output and the Loop Switch a signal processor can be inserted between the mixer and the power amplifier. 13. Loop Switch: In the Bypass (Out) mode the Loop Switch internally connects the Preamplifier Output to the Power Amplifier Input bypassing any external processing loop. In the Enable (In) mode the Loop Switch enables any external processing loop by internally disconnecting the Preamplifier Output from the Power Amplifier Input. The line level Preamplifier Output can be used regardless of this switch setting. 14. Outputs: A direct output and transformer-balanced outputs are provided to allow proper interface between the amplifier and loudspeaker system. The direct output allows connection to a 4 Ohm speaker system. To use this output disconnect the jumper between the 4 Ohm terminal and the XFMR LINK (transformer) terminal. Connect the loudspeaker system to the 4 Ohm and GND terminals. For transformer-balanced outputs ensure the jumper is installed and connect load between the desired output and COM. 15. Power Switch: This rocker switch applies mains power to the unit. 16. Fuse: The fuse is located within the cap of the fuse holder. If the fuse fails it must be replaced with the same type and value in order to avoid damage to the equipment and to prevent voiding the warranty. If the amplifier repeatedly blows the fuse it should be taken to a qualified service center for repair. Warning: The fuse should only be replaced when the power cord has been disconnected from the power source. 1 7. IEC Connector: This receptacle is for the IEC line cord (included) that provides AC power to the unit. Warning: Never break off the ground pin on any equipment. It is provided for your safety and the safety of your equipment. If the outlet does not have a ground pin a suitable grounding adapter should be used and the third wire should be properly grounded. To prevent risk of shock or fire hazard always be sure that all equipment is properly grounded. Note for UK only: If the colors of the wires in the mains lead of this unit do not correspond with the colored markings identifying the terminals in your plug proceed as follows: (1) Connect the green and yellow wire to the terminal that is marked by the letter E the earth symbol colored green or colored green and yellow. (2) Connect the blue wire to the terminal marked with the letter N or the color black. (3) Connect the brown wire to the terminal marked with the letter L or the color red. 7
IPA 1502/752 Technical Specifications Rated Output Power: IPA 1502: 150W IPA 752: 75W Output Regulation: Direct Out: <0.5dB Transformer Out: <1.0dB Frequency Response: Power Amplifier: +/- 0.5dB 20Hz 20kHz direct out +/- 1.0dB 50Hz 20kHz transformer out Preamplifier: +/- 1.0dB 20Hz 20kHz THD: Power Amplifier: 0.05% (1kHz) @ full power Preamplifier: 0.10% with nominal settings Power Bandwidth: Direct Out: <10Hz 70kHz Transformer Out: 30Hz 40kHz Signal/Noise: (22Hz 22kHz) typical All controls CCW: -100dB All controls nominal: -90dB Outputs: Direct Out: 4 Ohms XFMR: Balanced 8 Ohms 25V 70V (IPA 1502 120V only) Balanced 8 Ohms 70V 100V (IPA 1502 230V only) Balanced 8 Ohms 25V 70V 100V (IPA 752) Pre Out: 1V nominal +21dBu max @ 100 Ohms Input Sensitivity: Bridging Input: Up to 100mV @ 20k Ohms Power In: 1V @ 20k Ohms Front Panel Controls: Master Level Control Power Amplifier Signal Presence Indicator SPS Indicator Power On Indicator Rear Panel Controls: Module Input Level Control (use with MMA input modules only) Bridging Input Level Control Loop Switch Power Switch Muting: MMA input module with muting capability overrides the Bridging Input Other Features: Remote Volume Control (RVC) via screw terminals 10k Ohm approximately 30dB of attenuation 100k Ohm approximately 60dB of attenuation Power Requirements: IPA 1502 (domestic): 300W 120VAC 60Hz IPA 1502 (export): 300W 230VAC 50/60Hz IPA 752 (domestic): 180W 120VAC 60Hz IPA 752 (export): 180W 230VAC 50/60Hz Dimensions: With rack ears: width: 19.00" (483mm) depth: 13.25" (337mm) height: 3.45" (88mm) Without rack ears: width: 17.00" (432mm) depth: 13.25" (337mm) height: 3.45" (88mm) Weight: IPA 1502: 26.1 lbs (12 kg) IPA 752: 22.5 lbs (10 kg) 9
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