ΣS Series Wood Speaker

ΣS Series Wood Speaker

The Beta Three® ΣS series is a series of compact professional speakers perfectly suited for various portable and installed applications. It is incredibly lightweight and compact, easy to set up and operate, and complemented by its distinct feature of being used as a PA system or a stage monitor. The ΣS series is specially designed for applications including Houses of Worship, banquet halls, nightclubs, ballrooms, and many other venues demanding extraordinary acoustic performance.

ΣS306/50 - Dual 6" Two Way Full Range Speaker
ΣS306/50 - Dual 6" Two Way Full Range Speaker
ΣS306/50 - Dual 6" Two Way Full Range Speaker


Dual 6" Two Way Full Range Speaker

Portable and Installed PA loudspeakers used in applications including sound reinforcement and stage monitoring in Houses of Worship, Events, Clubs,Rehearsal Halls, Ballrooms. Σ Series delivers extraordinary performance at unmatched value. 


  • High SPL and sensitivity
  • 2 x 6” high power low frequency transducer
  • 1 x 1” PEI diaphragm compression driver
  • Passive configuration
  • 140º x 140º wide angle coverage pattern
  • 1 x NL4 connector
  • Computer aided design to optimise frequency and phase response
  • Multi purpose cabinet design for FOH or monitor use
  • Use as a main system with or without sub speaker augmentation.
  • Suitable for speech and background music
  • Flexible and easy-to-install configurations (wall, ceiling, under balcony)
  • U Bracket included
  • 35mm Stand Adapter included
  • Combine with any ΣB or ΣJ Series high power sub speaker for extended low frequency, high quality music reproduction
  • Powder coated grill
  • Durable Polyurethane textured base paint, white available
  • 1 x NL4 connector included in packaging


Acoustical specifications
Frequency Response(-3db):
Max SPL @ 1m:
Dispersion (H x V):
140° x 140°
Compression driver:
1 x 1" HF Compression Driver
2 x 6" LF
Input/Output section
Input Connectors:
1 x NL4
Sensitivity (1W @ 1m):
Processor section
Crossover frequencies:
Power section
Total Power:
Nominal Impedance (Ohm):
Physical specifications
Dimension (W x D x H):
212 x 194 x 541mm / (8.3 x 7.6 x 21.3in)
Package Dimensions (W x D x H):
631 x 541 x 303mm / (24.8 x 21.3 x 11.9in)
Net Weight:
9 kg / 19.8 lb
Gross Weight:
22.5 kg / 49.6 lb

ΣS306/50 Application

    ΣS306/50 Installation

      ΣS306/50 Parts

        ΣS306/50 Collocation



            ΣS306/50β3 ΣS306/50 Datasheet 1.0ΣS306/50  200KB 2022-05-22 06:13:14
            β3_ΣS306-50_PA_Chinese_Manualβ3_ΣS306-50_PA_Chinese_Manual 1β3_ΣS306-50_PA_Chinese_Manual  3070.26KB 2018-08-16 08:16:55
            β3_ΣS306-50_PA_English_Manualβ3_ΣS306-50_PA_English_Manual 1β3_ΣS306-50_PA_English_Manual  2921.36KB 2018-08-16 08:16:55