Klipsch KI-172-B-II 8" Compact Commercial Multi-Angle Loudspeaker at Vinyl Sound Toronto Canada

The KI-172-B-II is a compact high-performance 8" 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 8" K-81-ST woofer, a 1" K-103-TI-KP titanium diaphragm compression driver on a 90°x90° Tractrix Horn, and delivers a sensitivity of 95 dB with 115 dB maximum continuous SPL. Its asymmetrical 65° and 45° slanted-side enclosure is purpose-built for constrained-space permanent installations requiring angled projection, making it the ideal solution for under-balcony fills, wall mounts, ceiling projections, podium monitors, altar fills, and board or meeting room coverage in theaters, churches, schools, and clubs.

65° and 45° Asymmetrical Enclosure for Precision Angled Placement

The defining engineering feature of the KI-172-B-II is its asymmetrical enclosure geometry, with cabinet sides slanted at 65° and 45° within a compact footprint. This dual-angle design allows the speaker to be positioned against a flat mounting surface, whether a ceiling soffit, a wall corner, or a floor shelf, while naturally directing the horn axis toward the listening audience without requiring custom-fabricated angling brackets or complex rigging hardware. The result is a significant reduction in installation complexity and time for integrators working in physically constrained spaces such as under-balcony overhangs, altar-side positions, narrow corridor walls, and recessed ceiling soffits. The 3/4" MDF enclosure is CNC-fabricated using dado lock-joint and rabbet construction techniques, producing a cabinet that is both structurally rigid and acoustically inert, free from the panel resonance that compromises tonal clarity in lower-grade commercial enclosures. Radiused top and bottom panels and a perforated metal grille protect the drivers from impact and tampering while maintaining a professional appearance suitable for high-visibility architectural installations.

90°x90° Tractrix Horn and KLIP Driver Protection

The KI-172-B-II's high-frequency section uses the K-103-TI-KP, a 1" titanium diaphragm compression driver with a 5-ounce magnet structure, mounted on the K-802-M, a 90°x90° injection-moulded modified Tractrix Horn. The wide, symmetrical 90°x90° coverage pattern with a Directivity Index of 7 dB (+/- 1 dB) and a Directivity Factor (Q) of 5 makes the KI-172-B-II particularly well suited to distributed fill applications where broad, even audience coverage from a compact cabinet is the primary design objective. The modified Tractrix Horn geometry allows the compression driver's sound wave to exit the horn mouth with minimal back-reflections, reducing distortion and maintaining flat, predictable frequency response across the operational bandwidth. The internal high-current passive crossover operates at 2 kHz with 12 dB/octave low-frequency slopes and 18 dB/octave high-frequency slopes, and incorporates Klipsch's proprietary KLIP (Klipsch Limiting and Input Protection) circuit. The KLIP circuit monitors continuous average power to the high-frequency driver and reduces power delivery before thermal damage can occur, then automatically restores normal operation once input levels fall. This hardware protection layer operates independently of any external DSP or amplifier limiting, providing a reliable safety net in installations driven by amplifiers that exceed the speaker's rated continuous handling.

Key Features

• 65° and 45° Asymmetrical Slanted-Side Enclosure: Dual-angle geometry enables precise natural sound projection in angled wall, ceiling, under-balcony, corner, and slanted floor or shelf mounting positions without additional angling hardware.
• 90°x90° Tractrix Horn Coverage: Wide, symmetrical coverage pattern with a 7 dB Directivity Index provides broad, even audience coverage from a compact cabinet, ideal for distributed fill and near-field monitoring applications.
• 95 dB Sensitivity: Measured at 1 metre with a 2.83V input, enabling effective coverage from modest amplifier power in distributed and fill system configurations.
• 115 dB Continuous / 121 dB Peak SPL: Sufficient maximum output for theaters, churches, schools, meeting rooms, and club fill applications within the speaker's intended coverage zone.
• 200W Continuous / 800W Peak Power Handling: AES-rated at 31 volts continuous, compatible with professional 2-channel and multi-channel installation amplifiers.
• 8" K-81-ST Woofer: Dedicated low-frequency driver produces controlled, articulate bass output from the compact asymmetrical enclosure, extending to 74 Hz (+/- 3 dB).
• 1" K-103-TI-KP Titanium Compression Driver: Titanium diaphragm construction with a 5-ounce magnet delivers extended high-frequency response to 17 kHz with low distortion at sustained output levels.
• KLIP Overload Protection Circuit: Proprietary thermal protection monitors continuous average power to the HF driver, preventing damage from sustained overpower conditions while leaving normal programme dynamics unaffected.
• SB-102 U-Bracket Compatible: Top and bottom 1/4"-20 threaded T-nuts accept the optional Klipsch SB-102 U-shaped bracket for secure wall or ceiling surface mounting without modifying the enclosure.
• 3/4" MDF CNC-Fabricated Enclosure: Dado lock-joint and rabbet construction on CNC-fabricated panels ensures resonance-free response, panel rigidity, and long-term reliability in permanent installations.
• Compact Form Factor: At 27 lbs and a footprint of 18.9" x 11.5" x 10.6", the KI-172-B-II integrates unobtrusively into architecturally sensitive spaces where larger trapezoidal enclosures are impractical.
• 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 full-range signal connection from professional amplifiers
• Four 1/4"-20 threaded T-nuts on top and bottom panels for the optional Klipsch SB-102 U-shaped mounting bracket

Frequently Asked Questions

What is the Klipsch KI-172-B-II?

The Klipsch KI-172-B-II is a compact high-performance 8" 2-way multi-angle commercial loudspeaker from the Klipsch KI Series Professional Installation line, finished in black lacquer. It delivers 95 dB sensitivity, 115 dB continuous maximum SPL, and a frequency response of 74 Hz to 17 kHz (+/- 3 dB), housed in an asymmetrical enclosure with sides angled at 65° and 45°. It is engineered for permanent installations where space is limited and angled sound projection is required, including under-balcony fills, wall mounts, ceiling projections, altar-side monitors, podium fills, and board or meeting room coverage in theaters, churches, schools, and clubs.

How does the Klipsch KI-172-B-II compare to the JBL Control 28-1?

The Klipsch KI-172-B-II and the JBL Control 28-1 are both compact 8" 2-way passive commercial loudspeakers intended for permanent installation in constrained spaces, but they differ significantly in installation flexibility and horn technology. The KI-172-B-II's asymmetrical 65° and 45° slanted-side cabinet provides natural angled projection without additional hardware in positions where the JBL Control 28-1's standard rectangular enclosure would require angled mounting brackets. The KI-172-B-II's 90°x90° Tractrix Horn with a Directivity Index of 7 dB delivers more controlled, consistent coverage across the operating bandwidth than the Control 28-1's wide-dispersion design, which is optimised for broad ambient fill rather than focused audience coverage. The KLIP driver protection circuit in the KI-172-B-II also provides an additional hardware safety layer for the HF compression driver that is absent in the Control 28-1.

Can the Klipsch KI-172-B-II be used as a podium or altar monitor?

Yes, the KI-172-B-II is specifically designed for slanted floor or shelf monitor use near altars and podiums. Its 65° and 45° asymmetrical enclosure geometry allows the cabinet to sit flat on a floor or shelf surface while naturally angling the horn upward toward a standing speaker, singer, or officiant without requiring a monitor wedge stand or custom angled cradle. The 90°x90° wide coverage pattern ensures the sound field covers the performer's position generously, while the compact 27 lb cabinet integrates unobtrusively at floor level in architecturally sensitive environments such as sanctuaries, chapels, and board rooms.

What is the 90°x90° Tractrix Horn in the Klipsch KI-172-B-II?

The 90°x90° Tractrix Horn in the KI-172-B-II is the K-802-M, an injection-moulded modified Tractrix Horn that delivers equal horizontal and vertical coverage of 90° each, providing a wide, symmetrical dispersion pattern well suited to compact fill applications at relatively short throw distances. Klipsch's modified Tractrix equation shapes the horn geometry so the compression driver's sound wave exits the horn mouth with minimal back-reflections into the throat, reducing distortion and maintaining consistent frequency response across the coverage angle. The wide 90°x90° pattern differs from the narrower 60°x40° horns used in the larger KI-262 and KI-272 series, making the KI-172-B-II better suited to close-range audience fill applications rather than long-throw directional coverage.

Where can I buy the Klipsch KI-172-B-II in Toronto or Canada?

The Klipsch KI-172-B-II 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 professional support for system design and installation planning.

What amplifier is recommended for the Klipsch KI-172-B-II?

Klipsch recommends pairing the KI-172-B-II with a professional amplifier providing headroom of approximately twice the speaker's continuous power rating, meaning at least 400 watts into 8 ohms per channel for optimal dynamic performance. The nominal impedance is 8 ohms, with a minimum of 4.7 ohms at 184 Hz, making it compatible with standard professional 2-channel and multi-channel installation amplifiers from manufacturers such as Crown, QSC, and Lab.gruppen. In distributed systems where multiple KI-172-B-II units are installed, careful attention to parallel or series-parallel wiring configurations is recommended to maintain impedance within safe amplifier operating limits.

How is the Klipsch KI-172-B-II mounted on a wall or ceiling?

The KI-172-B-II is mounted using the optional Klipsch SB-102 U-shaped bracket, which attaches via four 1/4"-20 threaded T-nuts embedded in the top and bottom panels of the enclosure. The SB-102 bracket provides a rigid, secure attachment point for wall or ceiling surface mounting and allows for limited aiming adjustment of the cabinet axis relative to the bracket. When the SB-102 bracket is not required, the asymmetrical 65° and 45° slanted enclosure geometry allows the KI-172-B-II to be placed directly on a floor shelf or recessed surface with the horn naturally angled toward the listening position, eliminating the need for any additional mounting hardware in many common installation scenarios.

What is the difference between the Klipsch KI-172-B-II and the Klipsch KI-102-SMA-II?

The Klipsch KI-172-B-II and the KI-102-SMA-II are both compact 8" 2-way commercial installation loudspeakers sharing the same K-81-ST woofer and K-103-TI-KP compression driver on the K-802-M 90°x90° Tractrix Horn. The key difference is enclosure format: the KI-172-B-II uses an asymmetrical multi-angle cabinet with sides angled at 65° and 45°, designed specifically for installations requiring angled projection, while the KI-102-SMA-II uses a compact symmetrical trapezoidal enclosure suited to array configurations and standard wall or ceiling bracket mounting. System designers should choose the KI-172-B-II where the installation position itself must create the projection angle, and the KI-102-SMA-II where a conventional bracket-aimed trapezoidal enclosure is preferred.