- Net volume
- 125L
- Tuning
- 45Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
15-inch LF driver · 15NDL series · 88 mm voice coil · 700 W
B&C 15NDL88 8Ω
45–3000 Hz
- Fs
- 45Hz
- Xmax
- 8mm
- SPL
- 97dB
- Pe
- 700W
- BL
- 20.1T·m
- Vd
- 684cm³
- Qts
- 0.34
- Vas
- 126L
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 4f1f766a7628…Medium confidence7,514 selected pixels of 7,518 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 4f1f766a7628…Medium confidence3,831 selected pixels of 3,831
Published graphs
B&C 15NDL88 is a 15-inch 8 ohm LF driver rated at 700 W RMS. The validated T/S data includes Fs 45 Hz, Qts 0.34, Vas 126 L, Xmax 8 mm, sensitivity 97.1 dB, plus 684 cm³ Vd and 125 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 £230.60.
The published T/S values agree with each other
Thiele/Small
- Fs
- 45Hz
- Qts
- 0.34
- Qes
- 0.36
- Qms
- 6.1
- Vas
- 126L
- Re
- 5Ω
- Le
- 1.25mH
Motor and cone
- BL
- 20.1T·m
- Sd
- 855cm²
- Mms
- 102g
- Xmax
- 8mm
- Vd †
- 684cm³
- Voice coil
- 88mm
- Flux density
- 1.05T
Power and response
- Sensitivity †
- 97.1dB
- Manufacturer sensitivity
- 99dB
- Power
- 700W
- Nominal power
- 700W
- Impedance
- 8Ω
- Min. impedance
- 6Ω
- Range
- 45–3000Hz
- EBP †
- 125 · Leans vented
Size and mounting
- Diameter
- 393mm
- Cutout
- 354mm
- Bolt circle
- 374mm
- Depth
- 177mm
- Weight
- 5.7kg
Sensitivity shows 97.1 dB, calculated from the T/S values. B&C publishes 99.0 dB, 1.9 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 20.1T·m
- Fs
- 45Hz
- Le
- 1.25mH
- Re
- 5Ω
- Sd
- 855cm²
- Mms
- 102g
- Qes
- 0.36
- Qms
- 6.1
- Qts
- 0.34
- SPL
- 97.1dB
- Vas
- 126L
- Xmax
- 8mm
- Power
- 700W
- Impedance
- 8Ω
- Flux density
- 1.05T
- Sensitivity
- 99dB
- Low limit
- 45Hz
- Nominal power
- 700W
- Calculated sensitivity †
- 97.1dB
- High limit
- 3000Hz
- Manufacturer sensitivity
- 99dB
- Min. impedance
- 6Ω
- Voice coil
- 88mm
- Weight
- 5.7kg
- Diameter
- 393mm
- Depth
- 177mm
- Cutout
- 354mm
- Bolt circle
- 374mm
- Bl
- 20.1 Tm
- Fs
- 45 Hz
- Le
- 1.25 mH
- Re
- 5 Ω
- Sd
- 855 cm² (132.53 in²)
- Ebp
- 125 Hz
- Mms
- 102 g
- Qes
- 0.36
- Qms
- 6.1
- Qts
- 0.34
- Vas
- 126 dm³ (4.45 ft³)
- Η0
- 3.1 %
- Cone
- RCK15NDL888
- Xmax
- 8 mm
- Xvar
- 10 mm
- Depth
- 177 mm (6.97 in)
- Spider
- Double Silicone
- Cone shape
- Exponential
- Net weight
- 5.7 kg (12.57 lb)
- Pole design
- T-Pole
- Sensitivity
- 99 dB
- Flux density
- 1.05 T
- Shipping box
- 425x425x224 mm (16.73x16.73x8.82 in)
- Winding depth
- 21 mm (0.85 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 45 Hz - 3000 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 7 kg (15.43 lb)
- Nominal diameter
- 380 mm (15 in)
- Overall diameter
- 393 mm (15.47 in)
- Winding material
- Aluminium
- Minimum impedance
- 6 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 10 mm (0.39 in)
- Recommended tuning
- 45 Hz
- Voice coil diameter
- 88 mm (3.5 in)
- Bolt circle diameter
- 374 mm (14.72 in)
- Recommended enclosure
- 125 dm³ (4.41 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 354 mm (13.94 in)
- Nominal power handling
- 700 W
- Continuous power handling
- 1400 W
- Flange and gasket thickness
- 13 mm (0.51 in)
- Air volume occupied by driver
- 3.5 dm³ (0.12 ft³)
B&C’s suggested box
From B&C’s 15NDL88 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 15NDL88. Clear differences are green when better and red when worse.
This driver15NDL88
Best price
£230.60
Fs
45 Hz
Qts
0.34
Vas
126 L
BL
20.1 T·m
Xmax
8 mm
Sensitivity
97.1 dB
Power
700 W
B&C15CL76
£129.50 · 44% less, betterFs42 Hz −7%
Qts0.33 –
Vas135 L +7%
BL21 T·m +4%
Xmax7 mm −13%, worse
Sensitivity96.7 dB –
SB AudienceROSSO-15W400
£134.56 · 42% less, betterFs44 Hz –
Qts0.33 –
Vas140.1 L +11%, worse
BL21.5 T·m +7%
Xmax8.3 mm +3%
Sensitivity97.5 dB –
EminenceKAPPALITE 3015
£165.00 · 28% less, betterFs45 Hz –
Qts0.34 –
Vas153 L +21%, worse
BL18.6 T·m −7%
Xmax5.9 mm −26%, worse
Sensitivity97.9 dB +0.8
SB AudienceROSSO-15MW500
£173.91 · 25% less, betterFs42 Hz −7%
Qts0.33 –
Vas121.3 L −4%
BL23.2 T·m +15%, better
Xmax8.4 mm +5%
Sensitivity96.1 dB −1
BMS15S330
£194.97 · 15% less, betterFs39 Hz −13%, better
Qts0.32 −6%
Vas152 L +21%, worse
BL23 T·m +14%, better
Xmax8 mm –
Sensitivity96.3 dB −0.8
FaitalPRO15FH530
£202.87 · 12% less, betterFs39 Hz −13%, better
Qts0.35 –
Vas140.6 L +12%, worse
BL20.7 T·m –
Xmax9.3 mm +16%, better
Sensitivity95.7 dB −1.4
Beyma15MCB700
£208.98 · 9% less, betterFs44 Hz –
Qts0.34 –
Vas148 L +17%, worse
BL20 T·m –
Xmax7 mm −13%, worse
Sensitivity97.5 dB –
Precision DevicesPD.154C001
£222.00 · 4% lessFs45 Hz –
Qts0.31 −9%
Vas128 L –
BL25.5 T·m +27%, better
Xmax8.2 mm –
Sensitivity97.4 dB –
Sica15 PF 3
£237.63 · 3% moreFs45 Hz –
Qts0.31 −9%
Vas117.6 L −7%
BL21.9 T·m +9%
Xmax8 mm –
Sensitivity97.1 dB –
Eighteen Sound15NW530
£243.16 · 5% more, worseFs43 Hz −4%
Qts0.33 –
Vas154 L +22%, worse
BL22 T·m +9%
Xmax7.5 mm −6%
Sensitivity97.5 dB –
BMS15C262
£254.59 · 10% more, worseFs43 Hz −6%
Qts0.34 –
Vas138 L +10%
BL20.6 T·m –
Xmax2.5 mm −69%, worse
Sensitivity96.7 dB –
Eighteen Sound15NTLW3500
£321.39 · 39% more, worseFs45 Hz –
Qts0.39 +15%, worse
Vas131 L +4%
BL19.5 T·m –
Xmax8.3 mm +4%
Sensitivity96.8 dB –
B&C15CXN88
£494.86 · 115% more, worseFs47 Hz +4%
Qts0.30 −12%, better
Vas124 L –
BL20.1 T·m –
Xmax9.5 mm +19%, better
Sensitivity98.2 dB +1.1
Eighteen Sound15NCX910
£497.18 · 116% more, worseFs55 Hz +22%, worse
Qts0.33 –
Vas107 L −15%, better
BL21 T·m +4%
Xmax7 mm −13%, worse
Sensitivity99.2 dB +2.1, better
Oberton15HCX3572
No current priceFs46 Hz –
Qts0.34 –
Vas140.7 L +12%, worse
BL18.8 T·m −6%
Xmax7.3 mm −9%
Sensitivity98 dB +0.9
Oberton15MB35
No current priceFs48 Hz +6%
Qts0.34 –
Vas115.1 L −9%
BL20.1 T·m –
Xmax6.8 mm −16%, worse
Sensitivity97.6 dB +0.5
Oberton15NCX
No current priceFs44 Hz –
Qts0.36 +6%
Vas138.4 L +10%
BL18.6 T·m −8%
Xmax7.8 mm −3%
Sensitivity96.9 dB –
Oberton15MB500
No current priceFs42 Hz −8%
Qts0.34 –
Vas161.5 L +28%, worse
BL18.5 T·m −8%
Xmax7.8 mm −3%
Sensitivity97.2 dB –
Sica15 PFS 4
No current priceFs39 Hz −13%, better
Qts0.34 –
Vas103.9 L −18%, better
BL24.2 T·m +21%, better
Xmax8 mm –
Sensitivity94.2 dB −2.9, worse
Eighteen Sound15NCX910BE
No current priceFs55 Hz +22%, worse
Qts0.33 –
Vas107 L −15%, better
BL21 T·m +4%
Xmax7 mm −13%, worse
Sensitivity99.2 dB +2.1, better
Eighteen Sound15NCX910N
No current priceFs55 Hz +22%, worse
Qts0.33 –
Vas107 L −15%, better
BL21 T·m +4%
Xmax7 mm −13%, worse
Sensitivity99.2 dB +2.1, better
Sica15 PNS 4
No current priceFs37 Hz −17%, better
Qts0.35 –
Vas116.3 L −8%
BL22.7 T·m +13%, better
Xmax9 mm +13%, better
Sensitivity94 dB −3.1, worse
Eighteen Sound15NTLW2500
No current priceFs45 Hz –
Qts0.30 −12%, better
Vas143 L +13%, worse
BL21.2 T·m +5%
Xmax8 mm –
Sensitivity98.3 dB +1.2
Oberton15NMB500
No current priceFs45 Hz –
Qts0.29 −14%, better
Vas128.0 L –
BL21.3 T·m +6%
Xmax7.8 mm −3%
Sensitivity97.9 dB +0.8
LavoceNBASS15-30
No current priceFs42 Hz −7%
Qts0.36 +6%
Vas143.1 L +14%, worse
BL19.2 T·m −4%
Xmax6.6 mm −18%, worse
Sensitivity96.5 dB −0.6
Oberton15CX
No current priceFs38 Hz −15%, better
Qts0.35 –
Vas163.8 L +30%, worse
BL18.4 T·m −8%
Xmax7 mm −13%, worse
Sensitivity95.9 dB −1.2
RCFM15P550
No current priceFs45 Hz –
Qts0.37 +9%
Vas140 L +11%, worse
BL19.8 T·m –
Xmax7 mm −13%, worse
Sensitivity97 dB –
P.Audio15NX-76MB
No current priceFs40 Hz −11%, better
Qts0.34 –
Vas115.6 L −8%
BL21.4 T·m +6%
Xmax4.8 mm −41%, worse
Sensitivity95.3 dB −1.8
Oberton15XL400
No current priceFs49 Hz +8%
Qts0.34 –
Vas140 L +11%, worse
BL18.9 T·m −6%
Xmax5.3 mm −34%, worse
Sensitivity98.7 dB +1.6
CIARECSD154-22
No current priceFs31 Hz −31%, better
Qts0.33 –
Vas129 L –
BL18.4 T·m −8%
Xmax13 mm +63%, better
Sensitivity92.4 dB −4.7, worse
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 | £230.60, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure | £230.60 | In stock | Visit shop at JP Leisure | |
Thomann | £239.00 | 3.6% above the lowest price | In stock | Visit shop at Thomann |
Blue Aran | £244.00 | 5.8% above the lowest price | 2 in stock | Visit shop at Blue Aran |
Blue Aran | £244.00 | 5.8% above the lowest price | 4 in stock | Visit shop at Blue Aran |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £244.87 | 6.2% above the lowest price | In stock | Visit shop at JP Leisure |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £244.87 | 6.2% above the lowest price | In stock | Visit shop at JP Leisure |
Audio Video Parts Import VAT and duty may apply | £204.19 | Special order | Visit shop at Audio Video Parts |
Best price over time
Tracked since 1 Apr
Recent changes
- 4 OctThomann£244.00 → £239.00Down 2.0% from £244.00
- 2 SepThomann£239.00 → £244.00Up 2.1% from £239.00
- 17 AugThomann£244.00 → £239.00Down 2.0% from £244.00