2 x Beta 18" 1000w RMS Passive Subwoofers - BGrade

BB118SB

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£500Incl. VAT

Ex-Demo and with a few scuffs and an odd blemish you are buying 2 x 18" 1000w RMS (4000w Peak) Single 18" Passive subwoofers with Speakon In and out.

The two Beta 18″ ported Subwoofers we believe provide the tightest and most defined bass frequency response available in the UK today.

With a 3mm thick powder coated grille and finished in Heavy Duty black splatter PU paint it will withstand all the knocks and scrapes gathered through touring.

This speaker is 1000w RMS 8 ohm and contains our 100% reliable BDP18 Driver and 135dB!

The renamed Delta BD118S (was Beta) 18″ Subwoofer we believe provides the tightest and most defined bass frequency response available in the UK today.

Finished in Heavy Duty black splatter paint it will withstand all the knocks and scrapes gathered through touring.

Features:

  • 1000w RMS
  • Thick powder coated protective grille
  • Four coats of PU Paint
  • 35mm Inverted Pole Mount
  • 4 x Rubber insulation feet
  • BDP18 Cast Alloy woofer
  • Speakon in/out

100% 18mm 13 ply Birch Marine Plywood!

Each passive cabinet delivers 1000w RMS (4000w Peak) at 8 Ohm and goes down to 37 Hz - with 134dB 1w-1m. We make the cast alloy 1kw driver so we can control the performance to perfection!

Much easier to lift and store than 2 x twin 18" and gives the flexibility to take 1, 4 or more boxes to a gig!

The Beta 18″ Subwoofer we believe provides the tightest and most defined bass frequency response available in the UK today. We make the box and the driver and the driver is the BDP18, probably the most reliable 18" cast alloy driver in the UK today with over 5000 pieces sold and only 6 have come back for a re-cone.

The cabinet is finished in 4 coats of Heavy Duty black splatter PU paint it will withstand all the knocks and scrapes gathered through touring. The box has been tuned to perfection after 30 years of manufacture and it sounds as punchy and stomach punchy today as it ever did! No crossover is fitted in the box as all users should use a speaker management processor.

Glastonbury Festival used these boxes in 2019 to great acclaim!

Be it On-Tour, a Nightclub or House of Worship, the low-frequency response will move the audience during reproduction of the spoken word, recorded and live music.

Be it Abide with Me, Earth Wind & Fire or Jamming bass rhythms have never sounded so good!

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. 

  • Rugged birch multiplex/MDF hybrid enclosure
  • Covered with 4 coats of BishopSound PU heavy-duty chip-proof paint
  • Extra Thick ding proof metal grill
  • Acoustic Foam Behind Grill to Prevent Water and Dust Ingression
  • System Type 18" Passive (Subwoofer)
  • Loaded with BishopSound BDP18
  • Frequency Range 34~150 Hz
  • Impedance 8 OHM
  • Power RMS (W) 1000
  • Power PROG (W) 2000 (4000w Peak)
  • LF (Power/Sensitivity) 1000w/134dB
  • Max SPL (dB) 134dB
  • Cross over (Hz) +/-100hz
  • Connection 4 Pole connector x 2 (in and out)
  • Water-resistant Speakon upload backplate
  • Cabinet size 58*67*73 cm
  • Carton size 63*72*79 cm
  • Product Weight 37Kg
  • Top Hat 20mm threaded Inverted in top of the cabinet for pole mount

The BISHOPSOUND BDP18 SUB BASS WOOFER 18″ 1000W RMS is fitted in these cabinets and here are the details of the driver:

General Specifications:

  • Nominal Overall Diameter: 460 mm
  • Nominal Voice Coil Diameter: 100 mm
  • Magnet Weight: 125 OZ
  • Flux Density: 1.42 T
  • Weight: 11.2 Kg
  • THIELE-SMALL PARAMETERS

  • Voice Coil DC Resistance Re 5.6 Ω
  • Resonance Frequency Fs 34.8 Hz
  • Mechanical Q Factor Qms 11.48
  • Electrical Q Factor Qes 0.57
  • Total Q Factor Qts 0.543
  • Mechanical Moving Mass Mms 202.6 g
  • Mechanical Compliance Cms 103.05 um/N
  • Force Factor BL 20.87 Wb/m
  • Equivalent Acoustic Volume Vas 219.7 It.
  • Maximum Linear Displacement Xmax ±7 mm
  • Reference Efficiency ηo 1.575 %
  • Diaphragm Area Sd 122.54 Cm2
  • Losses Electrical Resistance Res Ω
  • Voice Coil Inductance@ 1K Hz LE m H
  • ELECTRICAL CHARACTERISTICS

  • Nominal Impedance 8 Ω
  • Musical Power 2000 W
  • Rated Power 1000 W
  • Sensitivity@1W/1m 95 d B
  • CONSTRUCTION CHARACTERISTICS

  • Magnet Ferrite
  • Voice Coil Winding Copper
  • Voice Coil Former Kapton
  • Cone Paper - Made In England
  • Surround Treated Cloth
  • Dust Dome Paper
  • Basket Die-Cast Aluminium

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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