The R6-51 three-way full-range loudspeaker system is engineered to provide quality full-range long throw sound projection in a variety of outdoor applications.

Its very high output, wide range, smooth frequency response, and high efficiency ensures both high fidelity music reproduction and superb projection of clear intelligible speech with very low distortion. The system is configured for biamplification for an active crossover for the LF to MF/HF sections and has a passive crossover for the MF to HF sections.

All R-Series loudspeakers are protected by a 5 year limited component warranty and a 15 year limited enclosure warranty. 


Loudspeaker Type 3-way, Horn Loaded tri-axial, Weather Resistant
Operating Range 50 Hz - 16 kHz
50 Hz - 10 kHz (+/- 4dB)
Max Input Ratings

1,200W continuous, 3000W program
80V RMS 
178V momentary peak

Recommended Power Amplifier 2,500W to 3,600W @ 5.3 Ohm
Sensitivity 1W/1m
(Free Space)
113dB SPL (630Hz - 16kHz 1/3 octave bands)
Maximum Output 138 dB SPL / 145 dB SPL (peak)
Nominal Impedance 5.3 Ohms
Nominal Dispersion 50° H x 10° V
Crossover Frequency 600 Hz / 4 kHz
Recommended Signal Processing 40 Hz high pass filter
Drivers LF (6) 12" weather treated, ferrofluid-cooled   MF (6) M200 2" Exit.
HF (6) 1" compression
Driver Protection PowerSense DDPTM
Input Connection (1) 16-2 SJOW (12ft / 4m)
Controls none
Enclosure Hand-laminated fibreglass, light grey colour
Enclosure Hardware None
Mounting / Rigging Provisions (4) 1/2-13 rigging points
Grille 16 gauge perforated stainless steel, Weather Stop Grille
Required Accessories 24dB/Oct high pass filter
Supplied Accessories none
Dimensions Height: 1245 mm (49.0")
Width (front): 940 mm (37.0")
Depth: 1105 mm (43.5")
Weight 134.0 kg (295 lbs)




  • Athletics Fields
  • Arenas
  • Stadia


  • Weather Resistant Construction
  • All-fiberglass Enclosure  
  • Pattern Control to below 200 Hz
  • High Efficiency
  • Integral Mounting Points
  • High Power Passive Crossover
  • High-Fidelity, Full-Range Reproduction of Music and Speech


Spec Sheet


R-Series Application Guide

R-Series Throw Distance Guide

R-Series Mass Notification Brochure

Security Products Mass Notification Supplement

Norwood Court
Ibrox Business Park
Glasgow G51 2JR

E: sales@cuk-audio.com
T: 0141 440 5333
F: 0141 440 1119
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