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LoudspeakersBookshelf SpeakersDiscontinued
Estimated price (community-sourced)
$350
Around — community and catalog average, updates slowly
About the RB81 II
The RB-81 II is a passive, two-way bass-reflex bookshelf speaker from Klipsch’s Reference line. It combines an 8-inch Cerametallic cone woofer with a 1-inch titanium-diaphragm compression driver coupled to a 90° × 60° Tractrix horn. The front-firing port and dual binding posts support flexible placement and bi-wiring or bi-amping. It was built from 2010 and is a discontinued model.
Specifications
Type: 2-way passive bass-reflex bookshelf speaker
Frequency response: 44 Hz–24 kHz (±3 dB)
Power handling: 150 W RMS / 600 W peak
Sensitivity: 97 dB (2.83 V/1 m)
Nominal impedance: 8 ohms compatible
High-frequency driver: 1-inch titanium-diaphragm compression driver with 90° × 60° square Tractrix horn
Crossover frequency: 1,400 Hz
Low-frequency driver: 8-inch Cerametallic cone woofer
Enclosure: Front-firing bass-reflex port
Inputs: Dual binding posts; bi-wire/bi-amp capable
Dimensions (H × W × D): 19 × 9.3 × 12.3 inches (48.4 × 23.5 × 31.2 cm), with grille
Weight: 27.5 lb (12.5 kg) each
Finishes: Black Ash or Cherry woodgrain vinyl