Beta 15" Dual 1200w RMS Passive Subwoofer

BB215S

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£449Incl. VAT £599Incl. VAT

With a 4 ohm impedance and 1200w RMS  (4800w Peak) you will get a much richer and tight bass response than our 18" BB218 or BD218.

Compact and punchy installers prefer this subwoofer as it takes up less space in a venue. Drive these with a 2000 watt RMS power amplifier. Visit our amplifier section to find the best Power Amplifier for your needs.

Loaded with 2 of our purpose made BDP15S Cast alloy subwoofer drivers give the ultimate performance and 130dB SPL. The tightness of the cast alloy BDP15S delivers a compact punchy bass as we use the highest possible cone and components carefully constructed by hand to exacting standards.

Key Features:

  • Genuine 1200w RMS 2400w Continuous, 4800w Peak power
  • 4 Coats of durable PU chip-proof paint
  • High excursion 15" low-frequency BDP15 Cast Alloy BishopSound driver with low mass voice coil for improved transient response
  • Rugged powder-coated 3mm thick perforated steel mesh grille
  • 2 x Steel side handles for easy lifting and carrying
  • Able to produce a maximum SPL of up to 130dB 
  • Rugged birch multiplex/MDF hybrid enclosure
  • Acrylic enamel, black grille, and easy-grip handles
  • Countersunk Extra Tick "ding proof" grille to prevent grill damage when on tour
  • Acoustic foam behind the grille to prevent moisture and dust ingression
  • Neutrik Speakon NL4 connectors in/out for reliable long-life operation

Passive bass speakers often perform much better than active speakers and are less prone to amplifier failure due to extreme sound pressure levels present in these BishopSound Subs.

If you need advice on amplification do not hesitate to call me Andrew on 07973223949.

Important information about subwoofers

Subwoofers are designed to reproduce low bass audio signals between 30Hz and 150Hz. Driving them with full frequencies will cause permanent damage, so they should only be operated with a passive low-pass filter, a crossover network, or an active electronic crossover or speaker management system.

  • Genuine 1200w RMS 2400w Continuous, 4800w Peak power
  • 4 Ohm
  • Rubber isolation feet
  • Stacking Locators
  • 4 Coats of durable PU chip-proof paint
  • High excursion 15" low-frequency BDP15 Cast Alloy BishopSound driver with low mass voice coil for improved transient response
  • Rugged powder-coated 3mm thick perforated steel mesh grille
  • 2 x Steel side handles for easy lifting and carrying
  • Able to produce a maximum SPL of up to 130dB 
  • Rugged birch multiplex/MDF hybrid enclosure
  • Acrylic enamel, black grille, and easy-grip handles
  • Countersunk Extra Tick "ding proof" grille to prevent grill damage when on tour
  • Acoustic foam behind the grille to prevent moisture and dust ingression
  • Neutrik Speakon NL4 connectors in/out for reliable long-life operation
  • Weight 56kg
  • Carton Weight 60kg
  • Dimensions 64 x 54 x 104 cm
  • Carton Dimensions 68 x 58 109 cm

The purpose made woofer for this cabinet is the BDP15s - Here are its performance details.

  • >100 dB Sensitivity (1W/1m).
  • 1200 W Program Power
  • 100 dB SPL output.
  • BRITISH Paper Cone
  • With Push-button Spring Terminals
  • Highest Quality British Cone offering increased strength, durability, and performance.
  • Nominal Voice Coil Diameter 100 mm
  • Magnet Weight 90 OZ
  • Nominal Chassis Diameter 381 mm / 15"
  • Impedance 8 ohm
  • Power Handling 600 w (A.E.S.)
  • Peak Power (6dB Crest Factor) 2400 w (A.E.S.)
  • Usable Frequency Range -6dB 38 Hz - 3.5 kHz
  • Sensitivity (1 w - 1 m) 100 dB
  • Moving Mass inc. Air Load 82.39 grams
  • Minimum Impedance Zmin 7 ohm
  • Effective Piston Diameter 381.76 mm / 15.03"
  • Peak Displacement Volume of Cone Vd 0.5 litres
  • Magnetic Gap Depth 10 mm
  • Flux Density of 0.97 Tesla
  • Coil Winding Height 19 mm
  • Voice Coil Diameter 76.2 mm
  • Fs 37 Hz
  • RE Ohms 5.4 Ohms
  • Qms 6.28
  • Qes 0.414
  • Qts 0.389
  • Vas Ltr 236 litres
  • Vd litres 0.556 litres
  • CMS (mm/N) 0.228 mm/N
  • BL T/m 15.9 T/m
  • Mms (grms) 81 grams
  • Xmax (mm) 6.5 mm
  • Sd (cm2) 855 cm2
  • Efficiency 2.83%
  • Le (1k Hz) 1.52 mH
  • Push-button Stainless Steel Spring Terminals
  • Former Material Glass Fibre
  • Voice Coil Copper
  • Magnet Material Ferrite
  • Chassis Cast Alloy
  • Cone British Made
  • Surround / Edge Termination Polyvinyl Damped Dbl. Half Roll
  • Poly-Cotton
  • Dust Dome Paper
  • Overall Diameter 381 mm
  • Width Across Flats N/A
  • Flange Height 8.89 mm
  • Baffle Hole Diameter F/M 351.79 mm
  • Baffle Hole Diameter R/M 351.79 mm
  • Gasket Supplied Front & Rear
  • Fixing Holes 8x 6.35 mm on 369.2 mm PCD
  • Depth 168.91 mm

Your Guarantee is for 12 months and starts from delivery date but please read on. The warranty is recorded with the BishopSound Order number which begins with a B. Please download and keep a copy of your invoice and keep it safe.

We know problems can occur from time to time so even after 1 year I am here to help. We carry parts and we treat everyone as we expect to be treated ourselves so we will work hard to get a win win.

We still help people who bought from us at Carlsbro 30 years ago with parts (if they are available) repairs and solutions. BishopSound prides itself on treating every customer as a family friend.

In short if the problem was caused by me its up to me to fix it. If you had an accident then I will try my hardest to fix it at little or no cost to you. This guarantee is in addition to, and does not affect your statutory rights or the other right of consumer purchases.

For more information, please see our Terms & Conditions

    Get in touch with BishopSound today for professional and friendly advice. Alternatively, you can call us on 01765 698 233 or 07973 223949. If you want to send a direct email please use andrew@bishopsound.com or victoria@bishopsound.com.

    If you have a question use this form or Live Chat and if you're interested in becoming an official distributor of BishopSound products, please get in touch below.

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