- Net volume
- 90L
- Tuning
- 40Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
15-inch LF driver · 15SW series · 116 mm voice coil · 1,700 W
B&C 15SW115 4Ω
35–1500 Hz
£395.70
SteadyJP Leisure · In stock · All 11 offers
- Fs
- 34Hz
- Xmax
- 13.5mm
- SPL
- 95dB
- Pe
- 1700W
- BL
- 25.5T·m
- Vd
- 1154cm³
- Qts
- 0.22
- Vas
- 105L
Published graphs
B&C 15SW115 is a 15-inch 4 ohm LF driver rated at 1700 W RMS. The validated T/S data includes Fs 34 Hz, Qts 0.22, Vas 105 L, Xmax 13.5 mm, sensitivity 94.6 dB, plus 1154 cm³ Vd and 148 EBP. bits tracks UK, EU and US shop prices, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £388.75.
The published T/S values agree with each other
Thiele/Small
- Fs
- 34Hz
- Qts
- 0.22
- Qes
- 0.23
- Qms
- 5.8
- Vas
- 105L
- Re
- 3.2Ω
- Le
- 1.27mH
Motor and cone
- BL
- 25.5T·m
- Sd
- 855cm²
- Mms
- 212g
- Xmax
- 13.5mm
- Vd †
- 1154cm³
- Voice coil
- 116mm
- Flux density
- 1.15T
Power and response
- Sensitivity †
- 94.6dB
- Manufacturer sensitivity
- 96dB
- Power
- 1700W
- Nominal power
- 1700W
- Impedance
- 4Ω
- Min. impedance
- 4.2Ω
- Range
- 35–1500Hz
- EBP †
- 148 · Leans vented
Size and mounting
- Diameter
- 393mm
- Cutout
- 353mm
- Bolt circle
- 374mm
- Depth
- 193mm
- Weight
- 11.1kg
Sensitivity shows 94.6 dB, calculated from the T/S values. B&C publishes 96.0 dB, 1.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 25.5T·m
- Fs
- 34Hz
- Le
- 1.27mH
- Re
- 3.2Ω
- Sd
- 855cm²
- Mms
- 212g
- Qes
- 0.23
- Qms
- 5.8
- Qts
- 0.22
- SPL
- 94.6dB
- Vas
- 105L
- Xmax
- 13.5mm
- Power
- 1700W
- Impedance
- 4Ω
- Flux density
- 1.15T
- Sensitivity
- 96dB
- Low limit
- 35Hz
- Nominal power
- 1700W
- Calculated sensitivity †
- 94.6dB
- High limit
- 1500Hz
- Manufacturer sensitivity
- 96dB
- Min. impedance
- 4.2Ω
- Voice coil
- 116mm
- Weight
- 11.1kg
- Diameter
- 393mm
- Depth
- 193mm
- Cutout
- 353mm
- Bolt circle
- 374mm
- Bl
- 25.5 Tm
- Fs
- 34 Hz
- Le
- 1.27 mH
- Re
- 3.2 Ω
- Sd
- 855 cm² (132.5 in²)
- Ebp
- 148 Hz
- Mms
- 212 g
- Qes
- 0.23
- Qms
- 5.8
- Qts
- 0.22
- Vas
- 105 dm³ (3.71 ft³)
- Η0
- 1.75 %
- Cone
- RCK15SW1154
- Xmax
- 13.5 mm
- Xvar
- 13 mm
- Depth
- 193 mm (7.6 in)
- Spider
- Double Silicone
- Cone shape
- Radial
- Net weight
- 11.1 kg (24.47 lb)
- Pole design
- T-Pole
- Sensitivity
- 96 dB
- Flux density
- 1.15 T
- Shipping box
- 425x425x224 mm (16.73x16.73x8.82 in)
- Winding depth
- 34 mm (1.33 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 35 Hz - 1500 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 12.4 kg (27.34 lb)
- Nominal diameter
- 380 mm (15 in)
- Overall diameter
- 393 mm (15.5 in)
- Winding material
- Copper
- Minimum impedance
- 4.2 Ω
- Nominal impedance
- 4 Ω
- Magnetic gap depth
- 14 mm (0.55 in)
- Recommended tuning
- 40 Hz
- Voice coil diameter
- 116 mm (4.5 in)
- Bolt circle diameter
- 374 mm (14.7 in)
- Recommended enclosure
- 90 dm³ (3.2 ft³)
- Woofer cone treatment
- TWP Waterproof Both Sides
- Baffle cutout diameter
- 353 mm (13.9 in)
- Nominal power handling
- 1700 W
- Continuous power handling
- 3400 W
- Flange and gasket thickness
- 16 mm (0.63 in)
- Air volume occupied by driver
- 7 dm³ (0.25 ft³)
B&C’s suggested box
From B&C’s 15SW115 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 15SW115. Clear differences are green when better and red when worse.
This driver15SW115
Best price
£388.75
Fs
34 Hz
Qts
0.22
Vas
105 L
BL
25.5 T·m
Xmax
13.5 mm
Sensitivity
94.6 dB
Power
1700 W
B&C15NDL76
£177.01 · 54% less, betterFs37 Hz +9%
Qts0.22 –
Vas195 L +86%, worse
BL22.5 T·m −12%, worse
Xmax7 mm −48%, worse
Sensitivity98.2 dB +3.6, better
B&C15FW76
£180.40 · 54% less, betterFs40 Hz +18%, worse
Qts0.21 −5%
Vas138 L +31%, worse
BL26.2 T·m –
Xmax7 mm −48%, worse
Sensitivity98.1 dB +3.5, better
Eighteen Sound15W930
£193.05 · 50% less, betterFs33 Hz –
Qts0.22 –
Vas240 L +129%, worse
BL22.1 T·m −13%, worse
Xmax7.5 mm −44%, worse
Sensitivity97.8 dB +3.2, better
LavoceWAF154.00
£207.50 · 47% less, betterFs38 Hz +12%, worse
Qts0.29 +32%, worse
Vas109.7 L +4%
BL27.4 T·m +7%
Xmax12.1 mm −10%, worse
Sensitivity94.9 dB –
Beyma15QLEX1600FE
£245.00 · 37% less, betterFs33 Hz –
Qts0.21 −5%
Vas102 L –
BL35.6 T·m +40%, better
Xmax13 mm −4%
Sensitivity94.2 dB –
B&C15NW100
£252.39 · 35% less, betterFs34 Hz –
Qts0.23 +5%
Vas126.1 L +20%, worse
BL24.5 T·m −4%
Xmax9 mm −33%, worse
Sensitivity95.4 dB +0.8
Beyma15LEX1600FE
£272.34 · 30% less, betterFs38 Hz +12%, worse
Qts0.33 +50%, worse
Vas106 L –
BL25.8 T·m –
Xmax13 mm −4%
Sensitivity94.4 dB –
Eighteen Sound15NMB1000
£285.89 · 26% less, betterFs46 Hz +35%, worse
Qts0.24 +9%
Vas124 L +18%, worse
BL25.2 T·m –
Xmax6.5 mm −52%, worse
Sensitivity99 dB +4.4, better
Eighteen Sound15NLW9401
£288.50 · 26% less, betterFs40 Hz +18%, worse
Qts0.25 +14%, worse
Vas114 L +9%
BL20 T·m −22%, worse
Xmax10 mm −26%, worse
Sensitivity96.5 dB +1.9
CIARENDH15-4S
£289.95 · 25% less, betterFs28 Hz −18%, better
Qts0.25 +14%, worse
Vas220 L +110%, worse
BL24.2 T·m −5%
Xmax11.5 mm −15%, worse
Sensitivity94.7 dB –
RCFMB15N351
£299.00 · 23% less, betterFs42 Hz +24%, worse
Qts0.22 –
Vas191 L +82%, worse
BL22.5 T·m −12%, worse
Xmax6 mm −56%, worse
Sensitivity99.7 dB +5.1, better
Beyma14MLEX1000ND
£300.43 · 23% less, betterFs47 Hz +38%, worse
Qts0.22 –
Vas75 L −29%, better
BL26.5 T·m +4%
Xmax11 mm −19%, worse
Sensitivity97.3 dB +2.7, better
B&C15SW100
£321.00 · 17% less, betterFs37 Hz +9%
Qts0.28 +27%, worse
Vas99.5 L −5%
BL22.1 T·m −13%, worse
Xmax12.5 mm −7%
Sensitivity94.4 dB –
Beyma15P80ND
£323.22 · 17% less, betterFs39 Hz +15%, worse
Qts0.21 −5%
Vas184 L +75%, worse
BL23.8 T·m −7%
Xmax7.5 mm −44%, worse
Sensitivity99 dB +4.4, better
Beyma15MLEX1000ND
£332.60 · 14% less, betterFs38 Hz +12%, worse
Qts0.21 −5%
Vas167 L +59%, worse
BL26 T·m –
Xmax11 mm −19%, worse
Sensitivity98.4 dB +3.8, better
RCFLF15N401
£333.00 · 14% less, betterFs34 Hz –
Qts0.22 –
Vas160 L +52%, worse
BL27.8 T·m +9%
Xmax9 mm −33%, worse
Sensitivity96.4 dB +1.8
B&C15DS100
£340.51 · 12% less, betterFs39 Hz +15%, worse
Qts0.23 +5%
Vas73 L −30%, better
BL24.3 T·m −5%
Xmax13 mm −4%
Sensitivity94.8 dB –
Beyma15LEX1600ND
£386.12 · Same priceFs41 Hz +21%, worse
Qts0.36 +64%, worse
Vas91 L −13%, better
BL25.7 T·m –
Xmax14.5 mm +7%
Sensitivity94.2 dB –
Eighteen Sound15NLW4500
£445.50 · 15% more, worseFs35 Hz –
Qts0.20 −9%
Vas126 L +20%, worse
BL24.4 T·m −4%
Xmax14.5 mm +7%
Sensitivity96.1 dB +1.5
Precision DevicesPD.155NR1
No current priceFs37 Hz +9%
Qts0.23 +4%
Vas140 L +33%, worse
BL28.6 T·m +12%, better
Xmax12 mm −11%, worse
Sensitivity96.8 dB +2.2, better
Oberton15PD600
No current priceFs38 Hz +12%, worse
Qts0.23 +4%
Vas133.3 L +27%, worse
BL28.7 T·m +13%, better
Xmax8.5 mm −37%, worse
Sensitivity97.1 dB +2.5, better
Oberton15PD601
No current priceFs38 Hz +12%, worse
Qts0.23 +4%
Vas133.3 L +27%, worse
BL28.7 T·m +13%, better
Xmax8.5 mm −37%, worse
Sensitivity97.1 dB +2.5, better
Oberton15XL600
No current priceFs41 Hz +20%, worse
Qts0.22 –
Vas150.3 L +43%, worse
BL24.7 T·m −3%
Xmax5.3 mm −61%, worse
Sensitivity98.7 dB +4.1, better
Oberton15XL601
No current priceFs41 Hz +20%, worse
Qts0.22 –
Vas150.3 L +43%, worse
BL24.7 T·m −3%
Xmax5.3 mm −61%, worse
Sensitivity98.7 dB +4.1, better
No photo
PHL Audio6031M
No current priceFs39 Hz +15%, worse
Qts0.23 +5%
Vas124 L +18%, worse
BL29 T·m +14%, better
Xmax8.5 mm −37%, worse
Sensitivity96.7 dB +2.1, better
No photo
PHL Audio6121M-20
No current priceFs39 Hz +15%, worse
Qts0.24 +9%
Vas119.7 L +14%, worse
BL29 T·m +14%, better
Xmax8.5 mm −37%, worse
Sensitivity96.6 dB +2, better
Precision DevicesPD.153C001
No current priceFs38 Hz +12%, worse
Qts0.22 –
Vas196 L +87%, worse
BL24.2 T·m −5%
Xmax7.7 mm −43%, worse
Sensitivity98.7 dB +4.1, better
Oberton15NB500
No current priceFs43 Hz +26%, worse
Qts0.26 +16%, worse
Vas121.5 L +16%, worse
BL24.3 T·m −5%
Xmax7.3 mm −46%, worse
Sensitivity97.7 dB +3.1, better
RCFCX15N351
No current priceFs55 Hz +62%, worse
Qts0.26 +18%, worse
Vas110 L +5%
BL23.5 T·m −8%
Xmax6 mm −56%, worse
Sensitivity100.3 dB +5.7, better
Oberton15MB701
No current priceFs44 Hz +30%, worse
Qts0.27 +22%, worse
Vas100.2 L −5%
BL26.1 T·m –
Xmax9.3 mm −31%, worse
Sensitivity97 dB +2.4, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Parts Express5.0 out of 51 rating · Checked 9 Oct 2026Read reviews on Parts Express
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
JP Leisure | £395.70, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £395.70 | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £395.70 | In stock | Visit shop at JP Leisure | |
JP Leisure | £395.70 | In stock | Visit shop at JP Leisure | |
Blue Aran | £406.99 | 2.9% above the lowest price | 2 in stock | Visit shop at Blue Aran |
Blue Aran 5-7 weeks | £406.99 | 2.9% above the lowest price | 21 in stock | Visit shop at Blue Aran |
Audio Video Parts Import VAT and duty may apply | £328.68 | Special order | Visit shop at Audio Video Parts | |
Parts Express Import VAT and duty may apply | £520.22 | 32% above the lowest price | 3 in stock | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 17 JulBlue Aran£413.00 → £406.99Down 1.5% from £413.00
- 23 JunJP Leisure£406.99 → £395.70Down 2.8% from £406.99
- 5 JunBlue Aran£399.00 → £413.00Up 3.5% from £399.00