QSC Pro audio KLA181-bk
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Information
Information
Manufacturer Information
QSC Pro Audio
https://www.qsc.com
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Safety manager:
Algam SAS
Email: contact@algam.net
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A Subwoofer Designed as the Bass Foundation of the KLA Series
In a line array configuration, spectral balance and coverage coherence are essential: the QSC KLA181-BK was designed with this in mind, as the dedicated low-frequency extension for systems based on the KLA12. It provides the depth and control needed to give punch to the kick drum, density to the bass, and dimension to musical content as well as vocals, while maintaining a clean and professional sonic signature.
Offered here in a black finish, the KLA181-BK easily integrates on stage, in corporate events, or public venues. Its "system" approach allows for scalable deployment: you adjust the number of modules according to the audience size, while maintaining a solid, stable, and controlled bass foundation.
Intended Uses and Target Audience for the QSC KLA181-BK
The KLA181-BK is aimed at service providers, sound engineers, musicians, DJs, and integrators seeking an active subwoofer capable of handling high levels without losing clarity. It is suitable for indoor concerts, outdoor events, touring productions, as well as permanent installations (houses of worship, multipurpose rooms, auditoriums, event spaces).
With a maximum level of 135 dB (Peak SPL at 1 m), it offers comfortable dynamic headroom: useful when the program demands impact, but also when working "cleanly" with sufficient headroom. The result is present and tight bass that supports the mix rather than masking it, even when the system is pushed over time.
Technical specifications
| Category | Soundsystem | Speaker structure | multi-ply birch |
| Type | active subwoofer | Transport | 4 handles |
| Peak power | 2000 W | Inputs | XLR, powerCON |
| Number of channels | 1 channel | Outputs | XLR, powerCON |
| Amplification | Active amplified | Color | Black |
| Application | Facade | Power output | 1000 W |
| Speaker diameter | 18" | Weight | 47.2 kg |
| SPL max | 135 dB | Dimensions (mm) | 760 x 710 x 610 |
Questions frequently asked
Is the QSC KLA181-BK compatible with KLA12 speakers?
This subwoofer is designed as the dedicated low-frequency extension for systems based on the KLA12. Its form factor fits into an expandable line array configuration.
What is the frequency response of the 18-inch subwoofer?
The frequency response extends down to 38 Hz at -6 dB and to 33 Hz at -10 dB, using an 18-inch woofer.
What power and sound level does this active subwoofer deliver?
The Class D amplification provides 1000 W RMS and 2000 W peak. The maximum announced level reaches 135 dB Peak SPL at 1 m. DEEP processing enhances the perception of low-frequency extension, while GuardRail protection limits clipping effects.
How is the KLA181-BK connected to a sound system?
XLR input and output connections enable signal daisy-chaining. The powerCON power connector also has input and output for power linking.
What are the dimensions and weight for transport?
With dimensions of 760 x 710 x 610 mm and a weight of 47.2 kg, this model includes four carrying handles. A rigging system is offered separately.
