Beta 15" Dual 1200w RMS Passive Subwoofer

BB215S

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£499Incl. VAT Our Price
£599Incl. VAT Typically This represents the average price across other brands that offer the same level of functionality and features as this product

Only 2 in stock!

Earn 2495 Sound Points!

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

BishopSound Limited Lifetime Guarantee

Effective on all purchases from 1st January 2021

With a returns rate of less than 1% we are proud to offer the BishopSound Lifetime Guarantee at no extra cost to you

BishopSound Limited will undertake to guarantee the product will be free from defective workmanship and materials for the reasonable life of the product.

BishopSound Limited will at its discretion and expense either repair the defect using new or refurbished parts, or replace the Product with a new or re-manufactured Product of a reasonable equivalent. In all instances BishopSound Limited’s liability will not exceed the original Purchase Price.

If we find a genuine fault or defect in your item that shouldn’t be there based on normal use, then we’ll repair or replace it for free– no questions asked. But, if that speaker has been unloved or beaten to within an inch of its life, then it might be time to buy a new one! In any case, we’ll review each case and will let you know if we can fix or replace it.

The warranty stated above is the sole and exclusive remedy and BishopSound Limited’s performance shall constitute full and final satisfaction of all obligations, liabilities and claims with respect to the Product. In any event, BishopSound Limited shall not be liable for and consequential, incidental, economic, property, bodily injury or personal injury damage arising from the product, any breach of the warranty or otherwise.

This Warranty applies to the first end-user purchaser, and only when purchased from BishopSound Direct or an authorized BishopSound Limited Dealer/Distributor on the UK Mainland listed on our website.

Additional Limitations and Exclusions from Warranty Coverage: The warranty described above is non-transferable, applies only to the Product purchased, does not include installation of any repaired or replaced Product, does not include damage to any allied or associated equipment which may result for any reason from use with this Product, and does not include labour or parts caused by accident, disaster, negligence, improper installation, broken warranty seals, misuse (e.g. over driving the amplifier or speaker, unstable, unprotected or badly earthed power sources, excessive heat or cold or humidity or inadequate ventilation), or from service or repair which has not been authorized by BishopSound Limited.

The end-user purchaser is liable for the cost of transportation and return of the Product in the original packaging. Any damages incurred during transport are the cost and responsibility of the end-user purchaser.

When purchasing BishopSound Limited products, please keep your receipt of purchase safe and retain all the original packaging, as this validates your warranty.

How To Claim

To qualify for the Lifetime warranty, in the first instance you must contact BishopSound Limited showing proof of purchase and the product code. You must be in possession of the original packing as this has the Serial Number printed on it.You will be asked for the serial number and given a return authorization number (RAN), which is required to progress with your warranty claim.

Any decision made by BishopSound Limited regarding any Lifetime Warranty claim is full and final.

This warranty takes effect from the 1st January 2021 onward. Goods purchased prior to this date were sold with the 12 month warranty which still stands.

Only branded BishopSound Limited Products are included in the Lifetime Guarantee:

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 for Andrew use this form or Live Chat for a fast reply.