Klipsch KI-272-BII 12" Commercial Multi-Angle Loudspeaker at Vinyl Sound Toronto Canada

The KI-272-BII is a high-power 12" 2-way multi-angle commercial loudspeaker from Klipsch (Hope, Arkansas, USA), available at Vinyl Sound in Toronto, Canada. Part of the Klipsch KI Series Professional Installation line, this black-finish model features a 12" K-281-EP cast-frame woofer, a 1.75" K-70-G titanium diaphragm compression driver on a 60°x40° Modified Tractrix Horn, and delivers a sensitivity of 100 dB with up to 121 dB maximum continuous SPL. Engineered specifically for constrained-space permanent installations requiring angled projection, the KI-272-BII suits theaters, clubs, churches, schools, auditoriums, restaurants, health clubs, and under-balcony applications where a standard trapezoidal enclosure cannot be used.

Multi-Angle Asymmetrical Enclosure Design

The defining characteristic of the KI-272-BII is its asymmetrical multi-angle enclosure, which presents both a 45° and a 65° angled face in a single compact cabinet. This dual-angle geometry allows the speaker to be mounted in positions where a conventional rectangular or symmetrical trapezoidal enclosure would either fail to project sound toward the audience or require impractical custom bracketing. The KI-272-BII is optimised for angled wall mounting, corner mounting, ceiling projection at oblique angles, under-balcony coverage, and slanted floor or shelf placement. In each of these scenarios the cabinet's geometry naturally directs the horn axis toward the listening area without requiring additional angled hardware. The enclosure is CNC-fabricated from 3/4" 7-ply birch plywood using dado lock-joint and rabbet construction, with a 1" MDF motorboard, ensuring resonance-free response and long-term structural integrity in permanent fixed installations.

Modified Tractrix Horn and KLIP Driver Protection

The high-frequency section of the KI-272-BII uses a K-70-G 1.75" titanium diaphragm compression driver mounted on the K-604 Modified Tractrix Horn, which produces a 60°x40° coverage pattern with a Directivity Index of 9 dB (+/- 3 dB) and a Directivity Factor (Q) of 7.9. The modified Tractrix equation allows the compression driver's sound wave to exit the horn mouth with minimal back-reflections into the throat, reducing distortion and maintaining flat, predictable frequency response across the operating bandwidth. Klipsch's proprietary KLIP Overload Protection Circuit monitors continuous average power to the high-frequency driver and intervenes before thermal damage can occur, automatically shutting down the HF section when continuous or thermal power ratings are exceeded and restoring normal operation once input power is reduced. This makes the KI-272-BII well suited to installations driven by high-power amplifiers in venues where programme material can produce extended high-level transients. The internal high-current passive crossover operates at 900 Hz, with 12 dB/octave slopes on the low-frequency side and 18 dB/octave on the high-frequency side, integrating the two drivers without the need for external active processing.

Key Features

• 100 dB Sensitivity: Measured at 1 metre half-spaced anechoic with a 2.83V input, delivering high efficiency and strong output from modest amplifier power in constrained commercial installations.
• 121 dB Continuous / 127 dB Peak SPL: Calculated maximum output at 1 metre supports demanding coverage requirements in theaters, clubs, auditoriums, and houses of worship.
• 300W Continuous / 1200W Peak Power Handling: AES-rated continuous power handling at 35 volts with 6 dB peak headroom for compatibility with professional amplifier systems.
• 45° and 65° Asymmetrical Multi-Angle Enclosure: Dual-angle cabinet geometry enables precise sound projection in angled wall, corner, ceiling, oblique, under-balcony, and slanted floor or shelf mounting scenarios without additional angling hardware.
• 60°x40° Modified Tractrix Horn: Controlled vertical and horizontal coverage pattern with a Directivity Index of 9 dB and Directivity Factor of 7.9 for consistent, focused audience coverage in reverberant spaces.
• 1.75" K-70-G Titanium Compression Driver: Titanium diaphragm construction delivers high-frequency headroom and extended response to 20 kHz with low distortion at sustained output levels.
• 12" K-281-EP Cast Frame Woofer: Heavy-duty cast-frame design produces controlled low-frequency output from the compact multi-angle enclosure, extending down to 65 Hz (+/- 3 dB).
• KLIP Overload Protection Circuit: Proprietary high-power thermal overload protection monitors continuous average power to the HF driver, preventing damage from sustained overload conditions without interrupting normal programme transients.
• 12 Suspension Flypoints: Twelve built-in 3/8"-16 threaded flypoints enable flexible overhead rigging and rigging bar compatibility for flown installations.
• SB-262 U-Bracket Compatible: Top and bottom 5/16"-18 threaded bracket mounting points accept the optional Klipsch SB-262 U-shaped C-mount bracket for wall or ceiling surface installation.
• Internal High-Current Full-Range Crossover: Passive crossover at 900 Hz with asymmetric slopes integrates woofer and compression driver without requiring external active electronics.
• Made in the USA: KI Series enclosures are designed and manufactured in Hope, Arkansas, continuing the tradition established by Klipsch founder Paul W. Klipsch in 1946.

Technical Specifications

Connections at a Glance

• Two-point barrier strip input for secure, robust professional wiring terminations
• Twelve 3/8"-16 threaded flypoints for rigging bar and overhead flown installation
• Four 5/16"-18 threaded holes on top and bottom panels for optional SB-262 U-shaped C-mount bracket

Frequently Asked Questions

What is the Klipsch KI-272-BII?

The Klipsch KI-272-BII is a high-power 12" 2-way multi-angle commercial loudspeaker from the Klipsch KI Series Professional Installation line, finished in black lacquer. It delivers 100 dB sensitivity, 121 dB continuous maximum SPL, and a frequency response of 65 Hz to 20 kHz (+/- 3 dB). Its asymmetrical 45° and 65° enclosure geometry is specifically engineered for constrained-space permanent installations where conventional rectangular or symmetrical trapezoidal cabinets cannot achieve the correct projection angle, including angled wall, corner, ceiling, under-balcony, and oblique-angle mounting scenarios in theaters, clubs, churches, and schools.

How does the Klipsch KI-272-BII compare to the JBL AM5215/95?

The Klipsch KI-272-BII and the JBL AM5215/95 are both professional passive 2-way installation loudspeakers targeting similar commercial venue applications, but they differ in cabinet format and coverage geometry. The KI-272-BII's asymmetrical multi-angle enclosure design at 45° and 65° gives it a decisive advantage in constrained installations requiring oblique projection angles, where the JBL AM5215/95's symmetrical trapezoidal form would require additional angling brackets to achieve equivalent aim. The KI-272-BII's 60°x40° Modified Tractrix Horn provides a narrower horizontal pattern suited to long-throw under-balcony and corner scenarios, while the AM5215/95 offers a wider 90°x50° coverage angle better suited to broader audience fills. The KI-272-BII's KLIP overload protection circuit also adds a hardware safety layer for the HF driver that is not present in the JBL equivalent.

Can the Klipsch KI-272-BII be used for under-balcony coverage?

Yes, the KI-272-BII is specifically designed for under-balcony coverage and is one of its primary intended applications. The asymmetrical 45° and 65° cabinet geometry allows the speaker to be mounted against a ceiling or soffit surface while projecting sound at an acute downward angle toward the seating area beneath the balcony overhang, without requiring additional angled mounting hardware. The 60°x40° coverage pattern and 9 dB Directivity Index ensure that sound energy is focused tightly on the intended audience zone, minimising spill onto reflective surfaces and maintaining speech intelligibility in acoustically challenging under-balcony environments.

What is the KLIP Overload Protection Circuit in the Klipsch KI-272-BII?

The KLIP (Klipsch Limiting and Input Protection) circuit is a proprietary thermal overload protection system integrated into the KI-272-BII's internal passive crossover that monitors continuous average power delivered to the high-frequency compression driver. When sustained input power exceeds the driver's continuous or thermal ratings, the KLIP circuit automatically reduces power to the HF section before thermal damage can occur, then restores normal operation once input levels decrease. The circuit monitors average power rather than peak transients, meaning it does not respond to normal programme dynamics but activates under sustained high-level conditions such as clipping or extreme amplifier overdrive. This protection is particularly valuable in installations where amplifier power significantly exceeds the speaker's rated continuous handling.

Where can I buy the Klipsch KI-272-BII in Toronto or Canada?

The Klipsch KI-272-BII is available at Vinyl Sound, an authorised Klipsch dealer located in Toronto, Canada. Vinyl Sound serves customers across the Greater Toronto Area and ships throughout Canada, providing access to the complete Klipsch KI Series professional installation loudspeaker range. Purchasing from an authorised Canadian dealer ensures full manufacturer warranty coverage and access to professional system design support.

What amplifier power does the Klipsch KI-272-BII require?

Klipsch recommends pairing the KI-272-BII with a professional amplifier providing headroom of approximately twice the speaker's continuous power rating, equating to at least 600 watts into 8 ohms for optimal dynamic performance and system headroom. The nominal impedance is 8 ohms, with a minimum of 4 ohms at 146 Hz, making the speaker compatible with standard 2-channel or 4-channel professional amplifiers from manufacturers such as Crown, QSC, and Lab.gruppen. The KLIP circuit provides HF driver protection in the event of sustained overpower, but Klipsch cautions that amplifier clipping from underpowering can also cause driver damage and recommends avoiding both extremes.

What mounting options are available for the Klipsch KI-272-BII?

The KI-272-BII supports three primary mounting methods. Twelve 3/8"-16 threaded flypoints distributed across the enclosure allow overhead rigging and rigging bar installation for flown applications. Four 5/16"-18 threaded holes on the top and bottom panels accept the optional Klipsch SB-262 U-shaped C-mount bracket for rigid wall or ceiling surface mounting. The asymmetrical cabinet geometry itself also allows direct shelf, slanted floor, or corner placement without any additional hardware, using the built-in 45° and 65° faces to naturally angle the horn toward the listening area. All rigging and overhead installations must be performed by qualified professionals following applicable load ratings and local safety codes.

What venues is the Klipsch KI-272-BII best suited for?

The Klipsch KI-272-BII is engineered for permanent commercial installations in spaces where physical constraints prevent the use of standard trapezoidal or rectangular enclosures. Klipsch identifies the primary applications as theaters, clubs, churches, schools, restaurants, auditoriums, health clubs, and AV production environments. The speaker excels in scenarios requiring angled projection such as under-balcony fills, corner mounts, ceiling-angle installations, and oblique-projection side fills, where its asymmetrical 45° and 65° cabinet design eliminates the need for custom fabricated angling solutions and ensures the horn axis is correctly aimed at the audience without compromise.