Beta Three ΣB118a 500W (RMS) 18” Bandpass LF Active Speaker

ΣB Series Sub speakers utilise high power low frequency drivers with structurally solid enclosures in classic horn-loaded and bandpass configurations. The ΣB Series Sub speakers deliver extended low frequency bandwidth with excellent punch. Suitable for Performing Arts, Auditoriums, Clubs, Houses of Worship, Entertainment Venues and Indoor Sports Facilities.

• High sensitivity and SPL
• 1 x 18” high power low frequency transducer
• Six order bandpass configuration
• Built-in power amplifier module
• Master volume control
• XLR input and output connectors
• Computer aided design to optimise frequency and phase response
• Stacking locators
• Suitable for use with any full range or mid/high speaker cabinets for extended low frequency, high quality music reproduction
• Integral 35mm pole receptacle for mounting full range or mid/high speaker cabinets
• Durable Polyurethane textured base paint

Cabinet Dimension:

Specifications
Construction	15mm Birch Plywood
Transducers	1 x 18” LF
Frequency Response (-3dB)	35Hz-250Hz
Rated Power	500W (RMS)
Amplifier Type	Class H
Sensitivity (1W @ 1m)	100dB
Maximum SPL (1W @ 1m)	133dB
Input Impedance	Balanced 20kΩ, Unbalanced 10kΩ
Rated Impedance	4Ω
Connector	2 x XLR
Power Supply	110V/220V
Dimensions (W x D x H)	693mm (27.3”) x 580mm (22.8”) x 539mm (21.2”)
Packaging Dimensions (1 piece/pack)	803mm (31.6”) x 690mm (27.1”) x 650mm (25.6”)
Net Weight (1 piece/pack)	45kg (99.2lb)
Gross Weight (1 piece/pack)	50kg (110lb)

 

Installation drawing: