B&C design
S218BP
2 × 18-inch sixth-order bandpass subwoofer, 1200 × 520 × 800 mm
B&C’s plans don’t name the 18DS100; the kit below is sold fitted with it.
18-inch LF driver · 18DS series · 100 mm voice coil · 1,500 W
B&C 18DS100 8Ω
34–1000 Hz
- Fs
- 34Hz
- Xmax
- 14.5mm
- SPL
- 95dB
- Pe
- 1500W
- BL
- 30T·m
- Vd
- 1755cm³
- Qts
- 0.29
- Vas
- 155L
Published graphs
B&C 18DS100 is an 18-inch 8 ohm LF driver rated at 1500 W RMS. The validated T/S data includes Fs 34 Hz, Qts 0.29, Vas 155 L, Xmax 14.5 mm, sensitivity 95.1 dB, plus 1755 cm³ Vd and 113 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 £350.64.
The published T/S values agree with each other
Thiele/Small
- Fs
- 34Hz
- Qts
- 0.29
- Qes
- 0.30
- Qms
- 9.5
- Vas
- 155L
- Re
- 4.5Ω
- Le
- 4.40mH
Motor and cone
- BL
- 30T·m
- Sd
- 1210cm²
- Mms
- 278g
- Xmax
- 14.5mm
- Vd †
- 1755cm³
- Voice coil
- 100mm
- Flux density
- 0.70T
Power and response
- Sensitivity †
- 95.1dB
- Manufacturer sensitivity
- 97.5dB
- Power
- 1500W
- Nominal power
- 1500W
- Impedance
- 8Ω
- Min. impedance
- 6.1Ω
- Range
- 34–1000Hz
- EBP †
- 113 · Leans vented
Size and mounting
- Diameter
- 460mm
- Cutout
- 425mm
- Bolt circle
- 442mm
- Depth
- 239mm
- Weight
- 10.5kg
Sensitivity shows 95.1 dB, calculated from the T/S values. B&C publishes 97.5 dB, 2.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 30T·m
- Fs
- 34Hz
- Le
- 4.40mH
- Re
- 4.5Ω
- Sd
- 1210cm²
- Mms
- 278g
- Qes
- 0.30
- Qms
- 9.5
- Qts
- 0.29
- SPL
- 95.1dB
- Vas
- 155L
- Xmax
- 14.5mm
- Power
- 1500W
- Impedance
- 8Ω
- Flux density
- 0.70T
- Sensitivity
- 97.5dB
- Low limit
- 34Hz
- Nominal power
- 1500W
- Calculated sensitivity †
- 95.1dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 97.5dB
- Min. impedance
- 6.1Ω
- Voice coil
- 100mm
- Weight
- 10.5kg
- Diameter
- 460mm
- Depth
- 239mm
- Cutout
- 425mm
- Bolt circle
- 442mm
- Bl
- 30 Tm
- Fs
- 34 Hz
- Le
- 4.4 mH
- Re
- 4.5 Ω
- Sd
- 1210 cm² (187.55 in²)
- Ebp
- 113 Hz
- Mms
- 278 g
- Qes
- 0.3
- Qms
- 9.5
- Qts
- 0.29
- Vas
- 155 dm³ (5.47 ft³)
- Η0
- 2.1 %
- Cone
- RCK18DS1008
- Xmax
- 14.5 mm
- Xvar
- 14 mm
- Depth
- 239 mm (9.41 in)
- Spider
- Double Silicone
- Cone shape
- Radial
- Net weight
- 10.5 kg (23.15 lb)
- Pole design
- T-Pole
- Sensitivity
- 97.5 dB
- Flux density
- 0.7 T
- Shipping box
- 500x500x300 mm (19.69x19.69x11.81 in)
- Winding depth
- 36.5 mm (1.44 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 34 Hz - 1000 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 12.3 kg (27.12 lb)
- Nominal diameter
- 460 mm (18 in)
- Overall diameter
- 460 mm (18 in)
- Winding material
- Aluminium
- Minimum impedance
- 6.1 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 16 mm (0.63 in)
- Recommended tuning
- 35 Hz
- Voice coil diameter
- 100 mm (4 in)
- Bolt circle diameter
- 442 mm (17.4 in)
- Recommended enclosure
- 200 dm³ (7.06 ft³)
- Woofer cone treatment
- TWP Waterproof Both Sides
- Baffle cutout diameter
- 425 mm (16.73 in)
- Nominal power handling
- 1500 W
- Continuous power handling
- 3000 W
- Flange and gasket thickness
- 16 mm (0.63 in)
- Air volume occupied by driver
- 10 dm³ (0.35 ft³)
02
Designs
Cabinets for the 18DS100: a suggested box from B&C and flatpack kits of B&C’s S218BP.
All 18DS100 designsHow we find designsFlatpacks that take the 18DS100
Kits cut to a published design
Cut in the UKB&C’s suggested box
From B&C’s 18DS100 page
- Net volume
- 200L
- Tuning
- 35Hz
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 18DS100. Clear differences are green when better and red when worse.
This driver18DS100
Best price
£350.64
Fs
34 Hz
Qts
0.29
Vas
155 L
BL
30 T·m
Xmax
14.5 mm
Sensitivity
95.1 dB
Power
1500 W
FaitalPRO18HP1022
£269.33 · 23% less, betterFs35 Hz –
Qts0.30 +3%
Vas204.9 L +32%, worse
BL28 T·m −7%
Xmax9.5 mm −34%, worse
Sensitivity96.6 dB +1.5
Eighteen Sound18LW2600
£300.67 · 14% less, betterFs31 Hz −9%
Qts0.29 –
Vas187 L +21%, worse
BL31 T·m +3%
Xmax14.8 mm –
Sensitivity94.7 dB –
SB AudienceNERO-18SW1100D
£338.74 · 3% lessFs36 Hz +6%
Qts0.33 +14%, worse
Vas153.1 L –
BL30.9 T·m –
Xmax12.2 mm −16%, worse
Sensitivity95.3 dB –
RCFLF18X451
£360.00 · 3% moreFs30 Hz −12%, better
Qts0.28 −3%
Vas220 L +42%, worse
BL30.5 T·m –
Xmax14 mm −3%
Sensitivity95.1 dB –
Eighteen Sound18NLW4100
£376.05 · 7% more, worseFs31 Hz −9%
Qts0.34 +17%, worse
Vas180 L +16%, worse
BL29 T·m −3%
Xmax15 mm +3%
Sensitivity93.9 dB −1.2
CelestionTSQ1845
£385.36 · 10% more, worseFs35 Hz –
Qts0.29 –
Vas119.3 L −23%, better
BL33.8 T·m +13%, better
Xmax15 mm +3%
Sensitivity94.3 dB −0.8
CelestionCF18VJD
£399.00 · 14% more, worseFs35 Hz –
Qts0.31 +7%
Vas145.8 L −6%
BL32.6 T·m +9%
Xmax12 mm −17%, worse
Sensitivity94.6 dB −0.5
Precision DevicesPD.1852/2
£399.00 · 14% more, worseFs42 Hz +23%, worse
Qts0.33 +14%, worse
Vas120.4 L −22%, better
BL30.5 T·m –
Xmax12 mm −17%, worse
Sensitivity96.2 dB +1.1
FaitalPRO18XL2000
£420.00 · 20% more, worseFs28 Hz −18%, better
Qts0.27 −7%
Vas232.1 L +50%, worse
BL30.8 T·m –
Xmax16.3 mm +13%, better
Sensitivity94.6 dB −0.5
RCFLN19S400
£421.78 · 20% more, worseFs32 Hz −6%
Qts0.26 −10%, better
Vas204 L +32%, worse
BL32 T·m +7%
Xmax17 mm +17%, better
Sensitivity96 dB +0.9
B&C18SW115
£435.33 · 24% more, worseFs32 Hz −6%
Qts0.30 +3%
Vas187 L +21%, worse
BL30.3 T·m –
Xmax14 mm −3%
Sensitivity94.9 dB –
MonacorCF18VJD/8
£448.03 · 28% more, worseFs35 Hz –
Qts0.31 +7%
Vas145.8 L −6%
BL32.6 T·m +9%
Xmax12 mm −17%, worse
Sensitivity94.6 dB −0.5
Eighteen Sound18NLW4500
£474.29 · 35% more, worseFs35 Hz –
Qts0.33 +14%, worse
Vas151 L –
BL30.3 T·m –
Xmax15.3 mm +6%
Sensitivity94.8 dB –
FaitalPRO18XL1700
£475.00 · 35% more, worseFs28 Hz −18%, better
Qts0.28 −3%
Vas227 L +46%, worse
BL30.5 T·m –
Xmax16.2 mm +12%, better
Sensitivity94.4 dB −0.7
Eighteen Sound18NLW9601
£549.67 · 57% more, worseFs39 Hz +15%, worse
Qts0.28 −3%
Vas120 L −23%, better
BL31 T·m +3%
Xmax14 mm −3%
Sensitivity95.8 dB +0.7
Eighteen Sound18NLW9000
£550.00 · 57% more, worseFs34 Hz –
Qts0.31 +7%
Vas206 L +33%, worse
BL28 T·m −7%
Xmax14 mm −3%
Sensitivity96.1 dB +1
Eighteen Sound18NTLW5000
£550.00 · 57% more, worseFs32 Hz −6%
Qts0.32 +10%, worse
Vas176 L +14%, worse
BL31.3 T·m +4%
Xmax17.5 mm +21%, better
Sensitivity94.5 dB −0.6
B&C18HTX100
£809.86 · 131% more, worseFs44 Hz +29%, worse
Qts0.32 +10%, worse
Vas173 L +12%, worse
BL26.3 T·m −12%, worse
Xmax13 mm −10%, worse
Sensitivity98.4 dB +3.3, better
Oberton18NXB1601
No current priceFs35 Hz –
Qts0.29 –
Vas146.2 L −6%
BL30.5 T·m –
Xmax12.5 mm −14%, worse
Sensitivity95.1 dB –
VAS Audio18-1700FC
No current priceFs33 Hz –
Qts0.29 –
Vas181 L +17%, worse
BL33 T·m +10%, better
Xmax13.5 mm −7%
Sensitivity95.4 dB –
Oberton18NXB1600
No current priceFs32 Hz −5%
Qts0.30 +4%
Vas173.1 L +12%, worse
BL29.6 T·m –
Xmax13.5 mm −7%
Sensitivity94.5 dB −0.6
Oberton18NXB1200
No current priceFs36 Hz +5%
Qts0.28 –
Vas159.6 L –
BL29.4 T·m –
Xmax11.5 mm −21%, worse
Sensitivity96 dB +0.9
VAS Audio18-1700NC
No current priceFs32 Hz −6%
Qts0.28 −3%
Vas178 L +15%, worse
BL34.4 T·m +15%, better
Xmax13.5 mm −7%
Sensitivity95.1 dB –
No photo
FaneIMPERIUM 18NDXL
No current priceFs33 Hz –
Qts0.29 –
Vas203 L +31%, worse
BL29.4 T·m –
Xmax12 mm −17%, worse
Sensitivity95.9 dB +0.8
Oberton18XB1301DS
No current priceFs36 Hz +5%
Qts0.30 +4%
Vas172.9 L +12%, worse
BL26.9 T·m −10%, worse
Xmax12 mm −17%, worse
Sensitivity96 dB +0.9
Precision DevicesPD.185NR1
No current priceFs34 Hz –
Qts0.27 −7%
Vas102 L −34%, better
BL29.5 T·m –
Xmax11.8 mm −19%, worse
Sensitivity93.4 dB −1.7
No photo
Precision DevicesPD.1845-1N
No current priceFs34 Hz –
Qts0.32 +12%, worse
Vas179.0 L +16%, worse
BL26.4 T·m −12%, worse
Xmax16 mm +10%, better
Sensitivity95.3 dB –
Oberton18NXB700
No current priceFs36 Hz +7%
Qts0.31 +8%
Vas155.5 L –
BL27.8 T·m −7%
Xmax9 mm −38%, worse
Sensitivity95.6 dB +0.5
Oberton18XB1600V2
No current priceFs33 Hz −4%
Qts0.28 −4%
Vas267 L +72%, worse
BL29.6 T·m –
Xmax12.5 mm −14%, worse
Sensitivity97.1 dB +2, better
Oberton18XB1201
No current priceFs38 Hz +12%, worse
Qts0.32 +9%
Vas159.4 L –
BL26.7 T·m −11%, worse
Xmax10.5 mm −28%, worse
Sensitivity96.3 dB +1.2
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann4.7 out of 53 ratings · Checked 9 Oct 2026Read reviews on Thomann
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Thomann | £359.00, the lowest price | In stock | Visit shop at Thomann | |
Blue Aran 5-7 weeks | £361.00 | 0.6% above the lowest price | 5 in stock | Visit shop at Blue Aran |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £371.90 | 3.6% above the lowest price | In stock | Visit shop at JP Leisure |
JP Leisure | £371.90 | 3.6% above the lowest price | In stock | Visit shop at JP Leisure |
Audio Video Parts Import VAT and duty may apply | £316.15 | Special order | Visit shop at Audio Video Parts | |
Parts Express Import VAT and duty may apply | £462.48 | 29% above the lowest price | Back order | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 9 AugThomann£361.00 → £359.00Down 0.6% from £361.00
- 2 AugBlue Aran£358.99 → £361.00Up 0.6% from £358.99
- 1 AugThomann£359.00 → £361.00Up 0.6% from £359.00