Lock iconRectangle 1Rectangle 2 + Rectangle 2 CopyShapeRectangle 1

Customer Reviews

Based on 2 reviews Write a review

Beta 3®

Beta 3® R4/R8 600W Powered Line Array Loudspeakers and Subwoofer

  • Sale
  • $2,198

Buy Now

This compact active line array loudspeaker system is used in applications including sound reinforcement for houses of worship, events, theme parks, multi-functional auditoriums, schools, and transit terminals, etc. The R Series compact active line array system delivers extraordinary performance where high speech intelligibility and natural sounding music is required at unmatched value.

Key Features and Benefits:

  • The system comprises of 4 x R4 mid/high boxes consisting of 1 x Ribbon and 2 x 4” drivers per cabinet and 1 x R8 Subwoofer cabinet comprising of 2 x 8” drivers
  • Built-in power amplifier module and DSP speaker processing within the R8
  • The DSP includes PEQ, Crossover and Slope, Delay, Gain and Limiter and is programable via either RS232 or USB by PC
  • RS485 allows multiple systems to be connected together for control
  • Software included
  • Master volume control
  • XLR input and output connectors
  • Integrated rigging and speaker cabling included for the system
  • Rigging allows adjustment of R4 in 1° increments
  • Designed for high speech intelligibility and natural sounding music
  • Suitable for use as a main system with or without sub speaker augmentation
  • Permanent installation
  • Powder coated grill
  • Durable Polyurethane textured base paint
  • Available in either black or white
  • Up to 4 systems can be arrayed

Construction: 15mm Birch Plywood


  • R4: 1 x Ribbon Driver HF + 2 x 4” MF
  • R8: 2 x 8” LF

Frequency Response (-3dB): 50Hz-40kHz

Rated Power:

  • 4 x 75W HF (RMS)
  • 1 x 300W LF (RMS)

Amplifier Type: Class H

Maximum SPL (1W @ 1m): 115dB/121dB (Peak)

Input Impedance: Balanced 20kΩ, Unbalanced 10kΩ

Rated Impedance: 8Ω

Dispersion (H x V ): 120° x 30° – 90°


  • R8: XLR Line Input/Output
  • XLR RS485 Input/Output
  • 2 x NL4 Output
  • R4: 2 x NL4

Net Dimensions: 8.7″ x 24″ x 35.5″

Net Weight: 99 lbs.

Gross Dimensions: 22.8″ x 27.4″ x 27.4″

Gross Weight: 110 lbs.