ΣB115D
15” Bandpass LF Speaker

The Beta Three® ?B Series Sub speakers utilise high power low frequency drivers with structurally solid enclosures with bandpass configurations. The ?B 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 15” high power low frequency transducer


Six order bandpass configuration


Speakon input 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


Construction 15mm Birch Plywood
Transducers 1 x 15” LF
Frequency response(-3dB) 50Hz-150Hz
Rated power 500W (RMS)
Sensitivity (1W @ 1m) 97dB
Maximum SPL (1W @ 1m) 124/130dB(PEAK)
Rated Impedance
Dispersion (H×V) N/A
Connector NL4×2
Dimensions (W×H×D) 600×500×460mm
Packaging Dimensions (W×H×D) 720×610×590mm
Net Weight 29kg (64lb)
Gross Weight 33.4kg (73.6lb)

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