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BIGRED15.5 15" 38cm 2x1Ohm DVC Subwoofer 3500w Genuine RMS

World RRP: £399.99


Product code: BIGRED15.5.1

Taking the SPL12.3 and SPL12.4 with its improved spider design as a base we created a longer throw version, with even bigger magnets, chassis and motor. Following guidance from clients we also constructed this monster using a DVC 1 Ohm Voice Coil. This allows a really flexible installation in the real world where SPL contests demand multiple woofers hanging off one amplifier in a low impedence configuration. Performance? You really have to ask? OK. It's devastating. Fully rebuildable with recone kit available separately. Everything about this woofer is designed to blow the doors off the competition. This is the one. Our new flagship all round woofer.

Technical Highlights

  • Bespoke Spider With Custom Tooled Spacer For Enormous Excursion And Control
  • Large Gauge Tinsel Leads Stitched To Spider
  • Super High Density Double Stacked Ceramic Magnets
  • Extreme Double Duty Non Pressed Paper Cone
  • Dual 1 Ohm BASV High Temperature Voice Coils
  • CAD Optimised Low Compression VC Cooling System
  • Packed In Proper Transit Box For Perfect Delivery
  • Treated Oversize Double Stitched Foam Surround
  • Quick Release Knurled Push Terminals
Technical Highlights



What's In The Box?

What's In The Box?
  • 1 x High Performance Dual Voice Coil Subwoofer

Version History

Prototype – We took the .4 series and begun to engineer an even more powerful version. Unfortunately it became clear early in the development process that the limitations of the basket itself had been more than reached by the motor structure already on the .4 so effectively this became a complete redesign. There were many problems along the way and in fact the proposed price of the product doubled during the design phase simply because it was impossible to build strength into the speaker without beefing up the components totally. The first prototypes were tested in the factory and the second set of prototypes were shipped to the UK and then on to Greece in early Q3 2017. It is too early to tell when the production version will be available but an estimate at this time would be Q1 2018. - UPDATE - Prototypes have been tested in Greece and although there are pointers towards amazing performance potential there are problems and limitations with the design of the cone internally and so we are looking at reworking this. For this reason we suspect Q2 2018 might be more sensible as an availability estimate. UPDATE - Finally launched in Q1 2019 the BIG RED certainly makes a big impression! Our resident box expert has added some very high performance box designs for Q4 2019. UPDATE - Prototype 2. A revised prototype was constructed in the factory taking on board the Greek feedback and work was concentrated primerily on the VC and glue design. Unfortunately it is very difficult to fly large speakers fom the far east to Europe and so the incredibly slow process of bringing this speaker to market has been very frustrating! The second prototype arrived at BF Italy in May 2018 and was thoroughly tested by the team there. We are extremely happy with the changes and the new speaker passed all of the tests with outstanding results. Only two changes were needed - firstly a revised cone finish and secondly a carbon fibre dustcap to lower the mass and prevent the bond between the cone structre and final gloss failing under extreme load. The order has been given to produce the speakers and the new name is BIGRED. We are now expecting availability of this speaker towards the mid of Q4 2018. Product was released to market Q1 2019.

Key Facts

Product Category Subwoofers
Version 1
Series Red
First Added 13/01/2017
Last Modified 20/09/2019
Barcode 683422302220
Production Status Discontinued
Product Net Weight (g) (For Pairs/Sets/Major Parts) 25000
Product Height (mm) 380
Product Length (mm) 465
Product Width (mm) 465
Complete Product Pack Weight (g) 30000
Warranty (Months) - Private Enjoyment Use Only 12
Sold As Single

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Speaker Data

Speaker Maximum Burst Power (Watts) (One Speaker, Using Appropriate Crossover) 7000
Speaker Power Handling RMS (Watts) (One Speaker, Using Appropriate Crossover) 3500
Continuous RMS Power (Watts) (One Speaker, Using Appropriate Crossover & 0%THD) 2630
Overall Diameter (mm) 400
Magnet Diameter (mm) (Including Magnet Protector Where Applicable) 255
Installation Cut-Out Diameter (mm) 355
Overall Depth (mm) 275
Mounting Depth (mm) 235
Front Protrusion From Mounting Plane (mm) 40
Impedance (Ohm) (Nominal) 1+1
Magnet Type Y30
Optimum Bass Enclosure Type Ported
Recommended Bass Enclosure Volume (CuFt) 3.53
Voice Coil External Diameter (mm) 100

Technical Parameters

Re (Ohm) 0.4595
fs(Hz) 31.63
Mms (g) 424.6
Cms(mm/N) 60
Qms 6.089
Qes 0.7484
Qts 0.6665
Vas (Ltr) 50.23
Levc (uH) 237.5
SPL (db/1Wm) 85,16