R.5 COAX66

The R.5COAX-66 high fidelity, two-way, full-range loudspeaker system is engineered to provide quality full-range sound in a variety of outdoor and indoor applications. It is designed to withstand exposure to tough, environmental conditions and to provide performance normally associated only with indoor loudspeakers.

Its 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 R.5COAX-66 has a 12-inch (300mm) cone LF driver and a 1-inch (25 mm) exit HF compression driver with a weather resistant diaphragm. The enclosure and HF horn are moulded from grey polyethylene. All exposed hardware is stainless steel. The Weather-StopTM grille assembly, retained by stainless steel screws to the front of the enclosure, consists of three layers.

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


Loudspeaker Type 2-way, co-axial, Weather Resistant
Operating Range 50 Hz - 16 kHz
80 Hz - 13 kHz (+/- 3.5dB)
Max Input Ratings

200W continuous, 500W program
40V RMS 
89V momentary peak

Recommended Power Amplifier 200W continuous. 500W Program
Sensitivity 1W/1m
(Free Space)
98dB SPL (160Hz - 10kHz 1/3 octave bands)
Maximum Output 121 dB SPL / 128 dB SPL (peak)
Nominal Impedance 8 Ohms
Nominal Dispersion 60° H x 60° V
Crossover Frequency 2 kHz
Recommended Signal Processing 50 Hz high pass filter
Drivers LF (1) 12" weather treated, ferrofluid-cooled
HF (1) 1" UC1 compression
Driver Protection DynatechTM
Input Connection (1) 16-2 SJOW (12ft / 4m)
Controls none
Enclosure Rotomoulded HDPE, light grey colour
Enclosure Hardware None
Mounting / Rigging Provisions (5) 3/8-16 rigging points
Grille 16 gauge perforated stainless steel, Weather Stop Grille
Required Accessories 24dB/Oct high pass filter
Supplied Accessories (1) Stainless Steel Yoke
Dimensions Height: 406 mm (16.0")
Width (front): 406 mm (16.0")
Depth: 406 mm (16.0")
Weight 15.9 kg (35.0 lbs)



  • Convention Centers
  • Fill Speaker for Stadia, Athletic Fields, Arenas and Race Tracks
  • Outdoor Background Music / Page Systems
  • Theme and Amusement Parks
  • Fairgrounds, Rodeos, Air Shows
  • Malls, Cruise ships, Skating Rinks
  • Swimming Pools, Convention Centres
  • Portable Sound Systems


  • High Fidelity
  • 200W, 100V Autoformer Version (R.5 COAX-66T)
  • Roto-Molded, UV Enclosure
  • High Efficiency
  • Integral Mounting Points
  • High Power Passive Crossover


Spec Sheet



What is an autoformer?

R-Series Application Guide

R-Series Throw Distance Guide

R-Series Mass Notification Brochure

Security Products Mass Notification Supplement

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Ibrox Business Park
Glasgow G51 2JR

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