QSC Audio HPR122i, HPR152i, HPR153i, HPR151i, HPR181i Application Example #3, CUT Filter

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Application Example #3

This example shows a two-channel (stereo) setup utiliz- ing two subwoofers and two top-boxes.

Audio signals for the Left and Right channels are supplied by the mixer console. This signal source can be just about any variable-output level audio source, such as DJ mix- ers, professional CD players, or computer-based audio signal sources.

Audio output from the mixer is connected to the sub- woofer input of each channel. Each subwoofer’s FULL RANGE LINE OUT connector is used to connect to its respective top-box. Turn ON the top-box’s 100 Hz LOW-

CUT FILTER.

Alternately, the top-boxes could be connected to the sub- woofer’s 100 Hz LOW-CUT OUT and the top-box 100 Hz LOW-CUT FILTER turned off. The only possible issue with this method of connection is unexpected noises (turn-off thumps) if the subwoofer is powered down before the top-boxes. If connected as shown, power sequencing is not an issue.

Application Example #3 physical diagram.

Channel 1 or Left Channel

Channel 2 or Right Channel

Application Example #3 hookup diagram.

Use only high-quality balanced cables for interconnecting the audio equipment.

Ensure the top-boxes have their 100 Hz LOW- CUT FILTER switched ON when connecting to the subwoofer’s FULL RANGE LINE OUT as a signal source.

Also, be sure to use either the Left or Right (marked L or R) on the subwoofers. If the subwoofer’s input is connected to the Right

(R)channel connector and the output to the top-boxes is connected to the Left (L) chan- nel connector, no signal will reach the top- box (no sound from the top-box).

HPR122i, HPR152i, or HPR153i

HPR151i or HPR181i

Mixer or Other Audio Source

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Contents TD-000234-00 Important Safety Precautions & Explanation of Symbols HPR122i Features IntroductionHPR153i Features HPR151i FeaturesFull Range Amplifier Detail Subwoofer Amplifier DetailInstallation HPR122i WarningHPR152i Warning How They Should Be UsedPick Points suspended installations CoolingPower Switch LED Power IndicatorSystem Power Sequencing AC MainsInput Connections Full Range LineHPR122i, HPR152i and HPR153i Output ConnectionsHPR151i and HPR181i Gain Control Subwoofer Gain NotesFilter OFF Full Range Filter on 100 Hz Low-CutPolarity Switch HPR151i and HPR181i Front LED SwitchHow to Use the Polarity Switch Signal Indicator LED Limit Indicator LEDApplication Example #1 Application Example #2 Application Example #3 CUT FilterApplication Example #4 Dimensions, HPR122i Application Example #5Dimensions, HPR152i Dimensions, HPR153i Dimensions, HPR151i Dimensions, HPR181i Specifications, HPR122i Specifications, HPR152i and HPR153i HPR152iSpecifications, HPR151i and HPR181i HPR151i HPR181iQSC Audio Products 3 Year Limited Warranty Disclaimer

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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