- Net volume
- 114L
- Tuning
- 35Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
15-inch LF driver · 15NBX series · 100 mm voice coil · 1,000 W
B&C 15NBX100 8Ω
35–1500 Hz
- Fs
- 36Hz
- Xmax
- 10mm
- SPL
- 95dB
- Pe
- 1000W
- BL
- 25T·m
- Vd
- 855cm³
- Qts
- 0.29
- Vas
- 125L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v2
free-air SPL
Frequency response
240 plotted pointsSource file SHA-256 274ecfad903a…Medium confidence6,262 selected pixels of 8,202 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 274ecfad903a…Medium confidence5,226 selected pixels of 5,911
Published graphs
B&C 15NBX100 is a 15-inch 8 ohm LF driver rated at 1000 W RMS. The validated T/S data includes Fs 36 Hz, Qts 0.29, Vas 125 L, Xmax 10 mm, sensitivity 94.8 dB, plus 855 cm³ Vd and 116 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 £267.25.
The published T/S values agree with each other
Thiele/Small
- Fs
- 36Hz
- Qts
- 0.29
- Qes
- 0.31
- Qms
- 4.2
- Vas
- 125L
- Re
- 5.1Ω
- Le
- 2mH
Motor and cone
- BL
- 25T·m
- Sd
- 855cm²
- Mms
- 151g
- Xmax
- 10mm
- Vd †
- 855cm³
- Voice coil
- 100mm
- Flux density
- 1.10T
Power and response
- Sensitivity †
- 94.8dB
- Manufacturer sensitivity
- 97dB
- Power
- 1000W
- Nominal power
- 1000W
- Impedance
- 8Ω
- Min. impedance
- 6.4Ω
- Range
- 35–1500Hz
- EBP †
- 116 · Leans vented
Size and mounting
- Diameter
- 393mm
- Cutout
- 353mm
- Bolt circle
- 374mm
- Depth
- 179mm
- Weight
- 9.6kg
Sensitivity shows 94.8 dB, calculated from the T/S values. B&C publishes 97.0 dB, 2.2 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 25T·m
- Fs
- 36Hz
- Le
- 2mH
- Re
- 5.1Ω
- Sd
- 855cm²
- Mms
- 151g
- Qes
- 0.31
- Qms
- 4.2
- Qts
- 0.29
- SPL
- 94.8dB
- Vas
- 125L
- Xmax
- 10mm
- Power
- 1000W
- Impedance
- 8Ω
- Flux density
- 1.10T
- Sensitivity
- 97dB
- Low limit
- 35Hz
- Nominal power
- 1000W
- Calculated sensitivity †
- 94.8dB
- High limit
- 1500Hz
- Manufacturer sensitivity
- 97dB
- Min. impedance
- 6.4Ω
- Voice coil
- 100mm
- Weight
- 9.6kg
- Diameter
- 393mm
- Depth
- 179mm
- Cutout
- 353mm
- Bolt circle
- 374mm
- Bl
- 25 Tm
- Fs
- 36 Hz
- Le
- 2 mH
- Re
- 5.1 Ω
- Sd
- 855 cm² (132.5 in²)
- Ebp
- 116 Hz
- Mms
- 151 g
- Qes
- 0.31
- Qms
- 4.2
- Qts
- 0.29
- Vas
- 125 dm³ (4.4 ft³)
- Η0
- 2 %
- Cone
- RCK15NBX1008
- Xmax
- 10 mm
- Xvar
- 10 mm
- Depth
- 179 mm (7.05 in)
- Spider
- Double Silicone
- Cone shape
- Exponential
- Net weight
- 9.55 kg (21.05 lb)
- Pole design
- T-Pole
- Sensitivity
- 97 dB
- Flux density
- 1.1 T
- Shipping box
- 425x425x224 mm (16.73x16.73x8.82 in)
- Winding depth
- 25 mm (1 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
- 9.85 kg (21.72 lb)
- Nominal diameter
- 380 mm (15 in)
- Overall diameter
- 393 mm (15.5 in)
- Winding material
- Copper
- Minimum impedance
- 6.4 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 11 mm (0.43 in)
- Recommended tuning
- 35 Hz
- Voice coil diameter
- 100 mm (4 in)
- Bolt circle diameter
- 374 mm (16.7 in)
- Recommended enclosure
- 114 dm³ (4 ft³)
- Woofer cone treatment
- TWP Waterproof Both Sides
- Baffle cutout diameter
- 353 mm (13.9 in)
- Nominal power handling
- 1000 W
- Continuous power handling
- 2000 W
- Flange and gasket thickness
- 14 mm (0.55 in)
- Air volume occupied by driver
- 6 dm³ (0.21 ft³)
B&C’s suggested box
From B&C’s 15NBX100 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 15NBX100. Clear differences are green when better and red when worse.
This driver15NBX100
Best price
£267.25
Fs
36 Hz
Qts
0.29
Vas
125 L
BL
25 T·m
Xmax
10 mm
Sensitivity
94.8 dB
Power
1000 W
CelestionCF1540HD
£177.40 · 34% less, betterFs41 Hz +13%, worse
Qts0.30 +5%
Vas108.3 L −13%, better
BL24.4 T·m –
Xmax10.5 mm +5%
Sensitivity95.6 dB +0.8
B&C15PZB100
£199.99 · 25% less, betterFs39 Hz +8%
Qts0.29 –
Vas110 L −12%, better
BL25.8 T·m +3%
Xmax8 mm −20%, worse
Sensitivity95.4 dB +0.6
LavoceWAF154.00
£207.96 · 22% less, betterFs38 Hz +6%
Qts0.29 –
Vas109.7 L −12%, better
BL27.4 T·m +9%
Xmax12.1 mm +21%, better
Sensitivity94.9 dB –
B&C15TBX100
£224.09 · 16% less, betterFs35 Hz –
Qts0.28 −3%
Vas113 L −10%
BL25.5 T·m –
Xmax9 mm −10%, worse
Sensitivity94.1 dB −0.7
MonacorCF1540HD/8
£228.33 · 15% less, betterFs41 Hz +13%, worse
Qts0.30 +5%
Vas108.3 L −13%, better
BL24.4 T·m –
Xmax10.5 mm +5%
Sensitivity95.6 dB +0.8
Eighteen Sound15LW1401
£254.65 · 5% lessFs42 Hz +17%, worse
Qts0.27 −7%
Vas131 L +5%
BL24.2 T·m −3%
Xmax9 mm −10%, worse
Sensitivity97.4 dB +2.6, better
FaitalPRO15HP1020
£263.08 · 2% lessFs40 Hz +11%, worse
Qts0.27 −7%
Vas126.6 L –
BL24.2 T·m −3%
Xmax9 mm −10%, worse
Sensitivity96.6 dB +1.8
Eighteen Sound15LW2400
£265.68 · Same priceFs40 Hz +11%, worse
Qts0.30 +3%
Vas131 L +5%
BL24 T·m −4%
Xmax10 mm –
Sensitivity96.2 dB +1.4
FaitalPRO15FX600
£287.75 · 8% more, worseFs38 Hz +6%
Qts0.27 −7%
Vas128.3 L –
BL23.2 T·m −7%
Xmax11.3 mm +13%, better
Sensitivity96 dB +1.2
Eighteen Sound15NLW9401
£288.50 · 8% more, worseFs39 Hz +8%
Qts0.26 −10%, better
Vas134 L +7%
BL25.4 T·m –
Xmax10 mm –
Sensitivity96.6 dB +1.8
B&C15NA100
£303.88 · 14% more, worseFs47 Hz +31%, worse
Qts0.28 −3%
Vas88 L −30%, better
BL26.3 T·m +5%
Xmax10 mm –
Sensitivity97 dB +2.2, better
Sica15 S 4 PL
£304.73 · 14% more, worseFs40 Hz +10%
Qts0.32 +10%, worse
Vas127.6 L –
BL22.5 T·m −10%
Xmax10 mm –
Sensitivity95.8 dB +1
Beyma15LEX1200ND
£325.25 · 22% more, worseFs36 Hz –
Qts0.30 +3%
Vas127 L –
BL26.4 T·m +6%
Xmax11 mm +10%, better
Sensitivity94.7 dB –
BMS15N840
£360.08 · 35% more, worseFs36 Hz –
Qts0.30 +3%
Vas145.7 L +17%, worse
BL24.6 T·m –
Xmax11 mm +10%, better
Sensitivity95.2 dB –
FaitalPRO15HX500
£432.05 · 62% more, worseFs40 Hz +11%, worse
Qts0.28 −3%
Vas150.1 L +20%, worse
BL22.2 T·m −11%, worse
Xmax9.4 mm −6%
Sensitivity97.2 dB +2.4, better
B&C15CXN88
£494.86 · 85% more, worseFs47 Hz +31%, worse
Qts0.30 +3%
Vas124 L –
BL20.1 T·m −19%, worse
Xmax9.5 mm −5%
Sensitivity98.2 dB +3.4, better
B&C15HTX100
£778.27 · 191% more, worseFs52 Hz +44%, worse
Qts0.29 –
Vas78 L −38%, better
BL27 T·m +8%
Xmax10 mm –
Sensitivity97.6 dB +2.8, better
No photo
PHL Audio6201MND
No current priceFs36 Hz –
Qts0.27 −7%
Vas140 L +12%, worse
BL25 T·m –
Xmax10.5 mm +5%
Sensitivity95.6 dB +0.8
Oberton15NXL701
No current priceFs43 Hz +21%, worse
Qts0.30 +3%
Vas127.1 L –
BL21.7 T·m −13%, worse
Xmax9.3 mm −8%
Sensitivity97.3 dB +2.5, better
Oberton15XB1000
No current priceFs37 Hz +3%
Qts0.28 –
Vas111.0 L −11%, better
BL25.6 T·m –
Xmax9 mm −10%, worse
Sensitivity94.9 dB –
Oberton15XB700
No current priceFs37 Hz +3%
Qts0.28 –
Vas111.0 L −11%, better
BL25.6 T·m –
Xmax9 mm −10%, worse
Sensitivity94.9 dB –
BMS15N850V2
No current priceFs36 Hz –
Qts0.30 +3%
Vas145.7 L +17%, worse
BL24.6 T·m –
Xmax11 mm +10%, better
Sensitivity95.2 dB –
Precision DevicesPD.1550/2
No current priceFs46 Hz +28%, worse
Qts0.29 –
Vas126.4 L –
BL26.6 T·m +6%
Xmax8.2 mm −18%, worse
Sensitivity98.2 dB +3.4, better
Oberton15NXB1000
No current priceFs38 Hz +7%
Qts0.28 –
Vas105.5 L −16%, better
BL26.0 T·m +4%
Xmax9 mm −10%, worse
Sensitivity95.1 dB –
Oberton15NXB700
No current priceFs38 Hz +7%
Qts0.28 –
Vas105.5 L −16%, better
BL26.0 T·m +4%
Xmax9 mm −10%, worse
Sensitivity95.1 dB –
Oberton15XL700
No current priceFs45 Hz +26%, worse
Qts0.28 −3%
Vas117.0 L −6%
BL23.1 T·m −8%
Xmax8.8 mm −13%, worse
Sensitivity97.8 dB +3, better
Oberton15XL701
No current priceFs45 Hz +26%, worse
Qts0.28 −3%
Vas117.0 L −6%
BL23.1 T·m −8%
Xmax8.8 mm −13%, worse
Sensitivity97.8 dB +3, better
Sica15 SR 4 CP
No current priceFs34 Hz −6%
Qts0.29 –
Vas101.2 L −19%, better
BL25.0 T·m –
Xmax8 mm −20%, worse
Sensitivity93.3 dB −1.5
No photo
PHL Audio6301MND
No current priceFs36 Hz –
Qts0.26 −10%, better
Vas140 L +12%, worse
BL25.5 T·m –
Xmax10.5 mm +5%
Sensitivity95.7 dB +0.9
BMS15S435
No current priceFs38 Hz +6%
Qts0.28 −3%
Vas129 L +3%
BL24.4 T·m –
Xmax8 mm −20%, worse
Sensitivity95.9 dB +1.1
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
JP Leisure | £267.25, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £267.25 | In stock | Visit shop at JP Leisure | |
Thomann | £282.00 | 5.5% above the lowest price | In stock | Visit shop at Thomann |
Blue Aran 5-7 weeks | £283.99 | 6.3% above the lowest price | 15 in stock | Visit shop at Blue Aran |
Audio Video Parts Import VAT and duty may apply | £224.68 | Special order | Visit shop at Audio Video Parts |
Best price over time
Tracked since 1 Apr
Recent changes
- 2 OctThomann£284.00 → £282.00Down 0.7% from £284.00
- 24 SepThomann£283.00 → £284.00Up 0.4% from £283.00
- 16 SepThomann£284.00 → £283.00Down 0.4% from £284.00