Compact High Performance Two-Way Stairstep Speakers (Non-Powered)

Sound that makes performances and audiences truly come alive doesn't come easy. But CF/CFX Series loudspeakers put the power of unique Renkus-Heinz developments to work for you. Versatile enclosure designs, go-anywhere hardware and rugged construction help solve your sound reinforcement challenges easily and quickly.

Every CF/CFX Series loudspeaker is engineered by Renkus-Heinz to unrivaled standards of quality and innovation. Before we'll ship them, your loudspeakers have to meet our exacting requirements for performance that will make you proud and durability that will keep you sounding great.

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Compact Size, Commanding Performance

Key Features

• High Volume Output, Small Enclosures
Outstanding, full-range 300 Hz to 20 kHz performance in a space saving in-wall design.

•Wide-Angle 150° by 60° Coverage
High frequency diffraction slot provides smooth 150° by 60° coverage.

• 1-inch Extended Range Titanium HF Driver
Provides smooth, low distortion high frequency performance to 20 kHz and beyond.

• Dual Heavy-Duty 4-inch Woofers
Easily handle 240 Watts of program power.

• Heavy 18 Gauge Metal Back Box
Optional 18 gauge metal backbox is "concrete pour" ready.

• Built-in Crossover
Eliminates need for a separate electronic crossover and bi-amplification.


Developed specifically for in-wall mounting in stair risers and stage lips.

• Ideal for many side and front fill applications; mounts inconspicuously in walls or ceilings, under and over balconies, etc.

• Foreground music systems in shopping malls, retail stores, offices, Etc.

Technical Information

Sensitivity: 95 dB (1W/1m)
Max SPL: 122 dB peak
Dispersion: 150° H x 60° V
Freq. Response: 300 Hz to 20 kHz
HF Driver: 1" Titanium driver, model SDA105-8; 15 W RMS, 30 W Pgm
LF Driver: Dual 4", Model SSL4-6; 4" Woofers; 60 W RMS, 120 W Pgm each
Enclosure: Hardwood, perforated metal grille
Back Box: 18 ga. CRS w/black powder coat
Power: 240 W Pgm @ 16 Ohms
Connectors: Screw terminals & looping 4-pin Neutrik Speakon style connectors
Finish: Black or White Paint
Enclosure Dimensions: 5 3/8" H x 16 5/8" W x 9 5/8" D
(13.7 cm x 42.2 cm x 24.4 cm)
Grille Dimensions: 5 3/4" H x 17" W x 1/4" D
(14.6 cm x 43.2 cm x .64 cm)
Back Box Dimensions: 5 5/8" H x 16 7/8" W x 13 3/16" D
(14.2 cm x 43 cm x 33.5 cm)
Weight: 16.8 Lbs (7.7 Kg) Net
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Part #Description
CFX42-BACKBX18 Gauge Metal backbox