Two-Way Complex Conic Loudspeaker Systems

Every C 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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12-Inch Heavy Duty Woofer + 2-inch Titanium HF Driver

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

The C121 features a 12-inch heavy duty woofer and a 2-inch titanium HF driver.

CX121 Non-Powered Loudspeakers
For use with external amplification

Key Features

• Compact Design
Outstanding, full-range ± 3 dB, 60 Hz to 18 kHz performance in a compact, space-saving design.

• Exclusive 90° x 40° Complex Conic Design
Provides constant beamwidth/directivity without the problems of conventional rectangular horns; can be rotated 90° within the cabinet for wide or deep listening spaces.

• 2-inch Extended Range Titanium HF Driver
Provides smooth, low distortion high frequency performance to 18 kHz and beyond.

• Heavy-Duty 12-inch Woofer
Easily handles 600 Watts of program power.

• Built-in Crossover
Includes EQ and high frequency protection; in the C121 eliminates need for a separate electronic crossover and bi-amplification.

If you need an outstanding high-power 12-inch 2-way system, order the C121.


• Virtually any application where size is a critical issue and outstanding sonic performance is required.

Permanent Installations

• Ideal compact main PA for music and speech or as part of a high output distributed system in larger venues.
• Houses of worship, schools, performing art centers, night clubs, stadiums and arenas.

Portable Applications

• Ideal main PA for unobtrusive live music and speech reinforcement or as fill coverage in larger systems.
• Rental A/V, DJ systems, churches, schools, etc.

Technical Information

Sensitivity: All Models97 dB (1W/1m)
Max SPL: All Models134 dB peak
Dispersion: All Models90° x 40°
Freq. Response: All Models± 3 dB, 60 Hz to 18 kHz
HF Driver: All Models2" SSD203-8F driver, 40 W RMS, 80 W Pgm
LF Driver: All Models12" model SSL12-14F, 250 W RMS @ 4 Ohms, except CFX121-8 which uses model SSL12-22, 8 Ohm, 250 W RMS woofer
Enclosure: All ModelsPoplar Ply, perforated metal grille
Finish: All ModelsBlack or White Paint
Power Rating: CX121
300 W AES @ 8 Ohms
600 W Pgm @ 8 Ohms
See SA-1250 Amplifier
Connectors: CX121
Screw terminals & looping 4-pin Neutrik Speakon style connectors
See SA-1250 Amplifier
Hardware: All Models12-point Universal Mounting Hardware
(Metric M10 threads)
U-bracket attachment points
Dimensions: All Models27" H x 14.25" W x 14.25" D
(68.58 x 36.195 x 36.195 cm)
Weight: CX121
48 Lbs (21.77 Kg) Net
47.8 Lbs (21.68 Kg) Net
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Data PDF2D PDF2D ACAD3D ACADA & EUser ManualSeries BrochureEASE Data
Additional Downloads
FileDocument TypeModelsDescription
CX121 Split Grille
C Series Group Lge
CX121 Front
CX121 Left Angle
CX121 Right Angle
CX121 Rear
Part #Description
UBRKT/121BBlack Single U-Bracket
UBRKT/121WWhite Single U-Bracket