B&C design
U14
14"/1.4" 1600w Utility Box (3-way - biamped or 2-way passive)
- Drivers
- 1 × 14NA100, 8 Ω
- Power
- 1,600 W
13.5-inch LF driver · 14NA series · 100 mm voice coil · 800 W
B&C 14NA100 8Ω
8 Ω · 45–2000 Hz
£279.65
SteadyJP Leisure · In stock · All 3 offers
- Fs
- 43Hz
- Xmax
- 8.8mm
- SPL
- 97dB
- Pe
- 800W
- BL
- 23.5T·m
- Vd
- 622cm³
- Qts
- 0.23
- Vas
- 100L
Published graphs
B&C 14NA100 is a 13.5-inch 8 ohm LF driver rated at 800 W RMS. The validated T/S data includes Fs 43 Hz, Qts 0.23, Vas 99.5 L, Xmax 8.8 mm, sensitivity 97.2 dB, plus 622 cm³ Vd and 179 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 £279.65.
The published T/S values agree with each other
Thiele/Small
- Fs
- 43Hz
- Qts
- 0.23
- Qes
- 0.24
- Qms
- 5.6
- Vas
- 99.5L
- Re
- 5.1Ω
- Le
- 0.74mH
Motor and cone
- BL
- 23.5T·m
- Sd
- 707cm²
- Mms
- 97g
- Xmax
- 8.8mm
- Vd †
- 622cm³
- Voice coil
- 100mm
- Flux density
- 1.15T
Power and response
- Sensitivity †
- 97.2dB
- Manufacturer sensitivity
- 99dB
- Power
- 800W
- Nominal power
- 800W
- Impedance
- 8Ω
- Min. impedance
- 6.2Ω
- Range
- 45–2000Hz
- EBP †
- 179 · Leans vented
Size and mounting
- Diameter
- 359mm
- Cutout
- 324mm
- Bolt circle
- 343mm
- Depth
- 176mm
- Weight
- 8.3kg
Sensitivity shows 97.2 dB, calculated from the T/S values. B&C publishes 99.0 dB, 1.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 23.5T·m
- Fs
- 43Hz
- Le
- 0.74mH
- Re
- 5.1Ω
- Sd
- 707cm²
- Mms
- 97g
- Qes
- 0.24
- Qms
- 5.6
- Qts
- 0.23
- SPL
- 97.2dB
- Vas
- 99.5L
- Xmax
- 8.8mm
- Power
- 800W
- Impedance
- 8Ω
- Flux density
- 1.15T
- Sensitivity
- 99dB
- Low limit
- 45Hz
- Nominal power
- 800W
- Calculated sensitivity †
- 97.2dB
- High limit
- 2000Hz
- Manufacturer sensitivity
- 99dB
- Min. impedance
- 6.2Ω
- Voice coil
- 100mm
- Weight
- 8.3kg
- Diameter
- 359mm
- Depth
- 176mm
- Cutout
- 324mm
- Bolt circle
- 343mm
- Bl
- 23.5 Tm
- Fs
- 43 Hz
- Le
- 0.74 mH
- Re
- 5.1 Ω
- Sd
- 707 cm² (109.59 in²)
- Ebp
- 179 Hz
- Mms
- 96.5 g
- Qes
- 0.24
- Qms
- 5.6
- Qts
- 0.23
- Vas
- 99.5 dm³ (3.51 ft³)
- Η0
- 3.1 %
- Cone
- RCK14NA1008
- Xmax
- 8.8 mm
- Xvar
- 8.5 mm
- Depth
- 176 mm (6.93 in)
- Spider
- Double Silicone
- Cone shape
- Radial
- Net weight
- 8.3 kg (18.3 lb)
- Pole design
- T-Pole
- Sensitivity
- 99 dB
- Flux density
- 1.15 T
- Shipping box
- 425x425x224 mm (16.73x16.73x8.82 in)
- Winding depth
- 23 mm (0.91 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 45 Hz - 2000 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 9.6 kg (21.16 lb)
- Nominal diameter
- 359 mm (14 in)
- Overall diameter
- 359 mm (14.13 in)
- Winding material
- Aluminium
- Minimum impedance
- 6.2 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 11 mm (0.43 in)
- Recommended tuning
- 50 Hz
- Voice coil diameter
- 100 mm (4 in)
- Bolt circle diameter
- 343 mm (13.5 in)
- Recommended enclosure
- 60 dm³ (2.12 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 324 mm (12.76 in)
- Nominal power handling
- 800 W
- Continuous power handling
- 1600 W
- Flange and gasket thickness
- 12 mm (0.47 in)
- Air volume occupied by driver
- 3.5 dm³ (0.12 ft³)
02
Designs
Cabinets for the 14NA100: a design and a suggested box from B&C.
All 14NA100 designsHow we find designsB&C’s design
From the maker, with plans to download
B&C’s suggested box
From B&C’s 14NA100 page
- Net volume
- 60L
- Tuning
- 50Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 14NA100. Clear differences are green when better and red when worse.
This driver14NA100
Best price
£279.65
Fs
43 Hz
Qts
0.23
Vas
99.5 L
BL
23.5 T·m
Xmax
8.8 mm
Sensitivity
97.2 dB
Power
800 W
Beyma14MC700ND
£229.73 · 18% less, betterFs51 Hz +19%, worse
Qts0.28 +22%, worse
Vas78 L −22%, better
BL22 T·m −6%
Xmax7 mm −20%, worse
Sensitivity97.4 dB –
SB AcousticsWO34HC-4
£279.42 · Same priceFs20 Hz −53%, better
Qts0.23 –
Vas233 L +134%, worse
BL15.1 T·m −36%, worse
Xmax8.3 mm −6%
Sensitivity90.8 dB −6.4, worse
Beyma14MLEX1000ND
£297.01 · 6% more, worseFs47 Hz +9%
Qts0.22 −4%
Vas75 L −25%, better
BL26.5 T·m +13%, better
Xmax11 mm +25%, better
Sensitivity97.3 dB –
B&C14CXN88
No current priceFs46 Hz +7%
Qts0.26 +13%, worse
Vas100 L –
BL20.7 T·m −12%, worse
Xmax9 mm –
Sensitivity97.6 dB –
B&C14NDL88
No current priceFs45 Hz +5%
Qts0.30 +30%, worse
Vas102 L –
BL19.9 T·m −15%, worse
Xmax8 mm −9%
Sensitivity96.8 dB –
B&C14CXN76
No current priceFs45 Hz +5%
Qts0.28 +22%, worse
Vas131 L +32%, worse
BL18.4 T·m −22%, worse
Xmax8 mm −9%
Sensitivity98.2 dB +1
B&C14NDL76
No current priceFs41 Hz −5%
Qts0.30 +30%, worse
Vas123 L +24%, worse
BL19 T·m −19%, worse
Xmax8 mm −9%
Sensitivity96.4 dB −0.8
LavoceWAN143.00
No current priceFs45 Hz +5%
Qts0.35 +52%, worse
Vas102.9 L +3%
BL18.7 T·m −20%, worse
Xmax7.5 mm −15%, worse
Sensitivity96 dB −1.2
SB AcousticsWO34HC-8
No current priceFs20 Hz −53%, better
Qts0.29 +26%, worse
Vas238 L +139%, worse
BL19 T·m −19%, worse
Xmax8.3 mm −6%
Sensitivity90.2 dB −7, worse
B&C14DS88
No current priceFs44 Hz –
Qts0.18 −22%, better
Vas55 L −45%, better
BL36.9 T·m +57%, better
Xmax11 mm +25%, better
Sensitivity95.9 dB −1.3
JensenBP12250-8
No current priceFs50 Hz +17%, worse
Qts0.32 +39%, worse
Vas73.5 L −26%, better
BL16.4 T·m −30%, worse
Xmax3.1 mm −65%, worse
Sensitivity96.4 dB −0.8
JensenBS12N250A-8
No current priceFs47 Hz +9%
Qts0.43 +87%, worse
Vas81.3 L −18%, better
BL14.4 T·m −39%, worse
Xmax5.5 mm −38%, worse
Sensitivity94.8 dB −2.4, 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 | £279.65, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £279.65 | In stock | Visit shop at JP Leisure |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£272.69 → £279.65Up 2.6% from £272.69