QSC Audio HPR122i, HPR152i, HPR153i, HPR151i, HPR181i user manual Cooling

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Installation (continued)

Pick Points (suspended installations)

The HPR152i and HPR153i enclosures feature three load-rated pick points. The HPR122i enclosure features nine load-rated pick points. As shipped from the factory, each pick point has a bolt or plug installed to retain the air-tight design of the enclosure. Never operate the loudspeaker with the pick points open (unsealed) as it will degrade the performance of the product.

Ensure all pick-point fasteners are installed and correctly tightened in order to maintain enclosure’s rated strength. Additionally, air leaks resulting from missing hardware will degrade the loudspeaker’s performance.

Use only QSC’s M10 forged shoulder eye bolts. Contact QSC Technical Services department for complete information.

Cooling

This is a self-powered loudspeaker containing an internal power amplifier that produces heat. Allow a minimum of 6” (152mm) clearance at cabinet back for convection cooling. Keep anything that might restrict airflow away from the rear of the enclosure (i.e draperies, fabric, etc...).

Do not use the HPR152i, HPR153i, HPR151i, or HPR181i oriented horizontally. Horizontal orientation can cause overheating and thermal limiting. The cooling fins on the amplifier module must be vertically oriented in order to efficiently dissipate the heat gener- ated by the amplifier.

Do not install enclosures with their rear panels exposed to direct sunlight. Direct sunlight will heat the amplifier module and reduce its ability to produce full output. Install sunshades if the applica- tion merits.

Maximum ambient temperature for full performance to specifica- tion is 40° C. (104° F.).

Do not install enclosures where exposed to rain or other water sources. The enclosure is not weatherproof. Outdoor installations must provide protection from the elements.

Pickpoints on the HPR122i

Pickpoints on the HPR152i and HPR153i

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Contents TD-000234-00 Important Safety Precautions & Explanation of Symbols Introduction HPR122i FeaturesHPR151i Features HPR153i FeaturesSubwoofer Amplifier Detail Full Range Amplifier DetailHow They Should Be Used InstallationHPR122i Warning HPR152i WarningCooling Pick Points suspended installationsAC Mains Power SwitchLED Power Indicator System Power SequencingFull Range Line Input ConnectionsHPR122i, HPR152i and HPR153i Output ConnectionsHPR151i and HPR181i Filter on 100 Hz Low-Cut Gain ControlSubwoofer Gain Notes Filter OFF Full RangePolarity Switch HPR151i and HPR181i Front LED SwitchHow to Use the Polarity Switch Limit Indicator LED Signal Indicator LEDApplication Example #1 Application Example #2 CUT Filter Application Example #3Application Example #4 Application Example #5 Dimensions, HPR122iDimensions, HPR152i Dimensions, HPR153i Dimensions, HPR151i Dimensions, HPR181i Specifications, HPR122i HPR152i Specifications, HPR152i and HPR153iHPR151i HPR181i Specifications, HPR151i and HPR181iDisclaimer QSC Audio Products 3 Year Limited Warranty

HPR122i, HPR152i, HPR153i, HPR151i, HPR181i specifications

QSC Audio is renowned for delivering high-quality audio solutions, and their HPR series is a testament to this commitment. The HPR122i, HPR152i, HPR153i, HPR151i, and HPR181i are standout models in the lineup, catering to a variety of sound reinforcement needs.

Starting with the HPR122i, this model is a 12-inch two-way loudspeaker designed for portable applications. It features a built-in 1000-watt Class D power amplifier, delivering exceptional clarity and high output. The rugged birch plywood enclosure enhances durability, while the advanced waveguide technology ensures a wide dispersion pattern, making it ideal for both live sound and permanent installations.

Moving up, the HPR152i showcases a larger 15-inch woofer, perfect for larger venues where deep bass and punchy sound are required. It retains the same robust build quality and integrated amplification as its smaller counterpart, ensuring reliability during extended use. The HPR152i’s contoured design allows for versatile positioning, whether it's on stands or as a floor monitor.

The HPR153i takes it a step further, offering a three-way design for even greater fidelity. With a dedicated 15-inch woofer, a 6.5-inch midrange, and a 1-inch compression driver, the HPR153i delivers a rich and detailed sound across all frequencies. This model is especially favored in settings where clarity and precision are paramount, such as concert halls and theatres.

Not to be overlooked, the HPR151i is a powerful subwoofer that complements the full-range speakers in the HPR series. Its 15-inch driver, paired with a 1000-watt Class D amplifier, delivers deep, impactful bass, enhancing the overall sonic experience. The HPR151i is ideal for situations requiring enhanced low-frequency response, making it a great match for DJs and live performers.

Finally, the HPR181i subwoofer elevates the low-end even further with its 18-inch woofer. This model is designed for serious bass enthusiasts, providing thunderous lows that can fill large spaces. Its robust design and advanced thermal management allow for extended use without overheating.

All models in the HPR series incorporate QSC’s Digital Signal Processing (DSP) technology, ensuring optimal sound performance and system protection. With their rugged construction, advanced features, and powerful sound, the QSC HPR series stands out as a top choice for audio professionals seeking reliability and exceptional performance in live sound applications. Whether for music, speech, or multimedia, the HPR series effectively meets the demands of diverse sound environments.
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