- Net volume
- 140L
- Tuning
- 40Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
18-inch LF driver · 18RBX series · 100 mm voice coil · 1,000 W
B&C 18RBX100 4Ω
35–1000 Hz
No price for delivery to the UK
- Fs
- 42Hz
- Xmax
- 10mm
- SPL
- 96dB
- Pe
- 1000W
- BL
- 22T·m
- Vd
- 1225cm³
- Qts
- 0.40
- Vas
- 136L
Published graphs
B&C 18RBX100 is an 18-inch 4 ohm LF driver rated at 1000 W RMS. The validated T/S data includes Fs 42 Hz, Qts 0.40, Vas 136 L, Xmax 10 mm, sensitivity 95.9 dB, plus 1225 cm³ Vd and 102 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 42Hz
- Qts
- 0.40
- Qes
- 0.41
- Qms
- 8
- Vas
- 136L
- Re
- 3.5Ω
- Le
- 1.20mH
Motor and cone
- BL
- 22T·m
- Sd
- 1225cm²
- Mms
- 210g
- Xmax
- 10mm
- Vd †
- 1225cm³
- Voice coil
- 100mm
- Flux density
- 1.10T
Power and response
- Sensitivity †
- 95.9dB
- Manufacturer sensitivity
- 97dB
- Power
- 1000W
- Nominal power
- 1000W
- Impedance
- 4Ω
- Min. impedance
- 4.5Ω
- Range
- 35–1000Hz
- EBP †
- 102 · Leans vented
Size and mounting
- Diameter
- 460mm
- Cutout
- 422mm
- Bolt circle
- 440mm
- Depth
- 200mm
- Weight
- 12.1kg
Sensitivity shows 95.9 dB, calculated from the T/S values. B&C publishes 97.0 dB, 1.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 22T·m
- Fs
- 42Hz
- Le
- 1.20mH
- Re
- 3.5Ω
- Sd
- 1225cm²
- Mms
- 210g
- Qes
- 0.41
- Qms
- 8
- Qts
- 0.40
- SPL
- 95.9dB
- Vas
- 136L
- Xmax
- 10mm
- Power
- 1000W
- Impedance
- 4Ω
- Flux density
- 1.10T
- Sensitivity
- 97dB
- Low limit
- 35Hz
- Nominal power
- 1000W
- Calculated sensitivity †
- 95.9dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 97dB
- Min. impedance
- 4.5Ω
- Voice coil
- 100mm
- Weight
- 12.1kg
- Diameter
- 460mm
- Depth
- 200mm
- Cutout
- 422mm
- Bolt circle
- 440mm
- Bl
- 22 Tm
- Fs
- 42 Hz
- Le
- 1.2 mH
- Re
- 3.5 Ω
- Sd
- 1225 cm² (189.88 in²)
- Ebp
- 102 Hz
- Mms
- 210 g
- Qes
- 0.41
- Qms
- 8
- Qts
- 0.4
- Vas
- 136 dm³ (4.8 ft³)
- Η0
- 2.5 %
- Cone
- RCK18RBX1004
- Xmax
- 10 mm
- Xvar
- 13 mm
- Depth
- 200 mm (7.87 in)
- Spider
- Double Silicone
- Cone shape
- Curvilinear
- Net weight
- 12.05 kg (26.57 lb)
- Pole design
- T-Pole
- Sensitivity
- 97 dB
- Flux density
- 1.1 T
- Shipping box
- 500x495x275 mm (19.69x19.49x10.83 in)
- Winding depth
- 25 mm (1 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 35 Hz - 1000 Hz
- Magnet material
- Ferrite
- Shipping weight
- 13.65 kg (30.09 lb)
- Nominal diameter
- 460 mm (18 in)
- Overall diameter
- 460 mm (18.11 in)
- Winding material
- Copper
- Minimum impedance
- 4.5 Ω
- Nominal impedance
- 4 Ω
- Magnetic gap depth
- 11 mm (0.43 in)
- Recommended tuning
- 40 Hz
- Voice coil diameter
- 100 mm (4 in)
- Bolt circle diameter
- 440 mm (17.32 in)
- Recommended enclosure
- 140 dm³ (4.94 ft³)
- Woofer cone treatment
- TWP Waterproof Both Sides
- Baffle cutout diameter
- 422 mm (16.61 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
- 10.5 dm³ (0.37 ft³)
B&C’s suggested box
From B&C’s 18RBX100 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 18RBX100. Clear differences are green when better and red when worse.
This driver18RBX100
Best price
–
Fs
42 Hz
Qts
0.40
Vas
136 L
BL
22 T·m
Xmax
10 mm
Sensitivity
95.9 dB
Power
1000 W
SB AudienceROSSO-18SW750
£200.80Fs36 Hz −14%, better
Qts0.43 +7%
Vas206.9 L +52%, worse
BL23.3 T·m +6%
Xmax8.8 mm −12%, worse
Sensitivity95.3 dB −0.6
Beyma18LEX1200FE
£224.27Fs32 Hz −24%, better
Qts0.38 −5%
Vas277 L +104%, worse
BL23.2 T·m +5%
Xmax11 mm +10%, better
Sensitivity95.7 dB –
Beyma18LEX1000FE
£225.00Fs34 Hz −19%, better
Qts0.38 −5%
Vas250 L +84%, worse
BL23.8 T·m +8%
Xmax11 mm +10%, better
Sensitivity96 dB –
CelestionFTR18-4080HDX
£237.20Fs39 Hz −7%
Qts0.43 +7%
Vas174.9 L +29%, worse
BL21.3 T·m −3%
Xmax10.1 mm –
Sensitivity95.6 dB –
CelestionCF1840JD
£239.00Fs37 Hz −12%, better
Qts0.40 –
Vas155 L +14%, worse
BL24.8 T·m +13%, better
Xmax12.5 mm +25%, better
Sensitivity94.6 dB −1.3
SB AudienceROSSO-18SW650
£244.95Fs31 Hz −26%, better
Qts0.41 –
Vas304.3 L +124%, worse
BL20.6 T·m −6%
Xmax11.2 mm +12%, better
Sensitivity95.2 dB −0.7
Beyma18LEX1000ND
£249.54Fs34 Hz −19%, better
Qts0.39 –
Vas260 L +91%, worse
BL22 T·m –
Xmax11 mm +10%, better
Sensitivity95.9 dB –
B&C18NBX100
£265.28Fs35 Hz −17%, better
Qts0.37 −8%
Vas192 L +41%, worse
BL22 T·m –
Xmax10 mm –
Sensitivity95.3 dB −0.6
MonacorCF1840JD/4
£286.39Fs37 Hz −12%, better
Qts0.40 –
Vas155 L +14%, worse
BL24.8 T·m +13%, better
Xmax12.5 mm +25%, better
Sensitivity94.6 dB −1.3
MonacorCF1840JD/8
£286.39Fs37 Hz −12%, better
Qts0.40 –
Vas155 L +14%, worse
BL24.8 T·m +13%, better
Xmax12.5 mm +25%, better
Sensitivity94.6 dB −1.3
FaitalPRO18HP1042
£288.92Fs38 Hz −10%
Qts0.41 –
Vas191.9 L +41%, worse
BL24.5 T·m +11%, better
Xmax9 mm −10%, worse
Sensitivity95.9 dB –
B&C18SW100
£336.23Fs36 Hz −14%, better
Qts0.36 −10%, better
Vas160 L +18%, worse
BL22 T·m –
Xmax12.5 mm +25%, better
Sensitivity94.7 dB −1.2
Sica18 PF 4
£359.00Fs38 Hz −10%
Qts0.43 +7%
Vas147.3 L +8%
BL24.6 T·m +12%, better
Xmax8 mm −20%, worse
Sensitivity94.4 dB −1.5
P.AudioP-18N-V3
No current priceFs35 Hz −17%, better
Qts0.40 –
Vas179.5 L +32%, worse
BL24.1 T·m +10%
Xmax9 mm −10%, worse
Sensitivity94.7 dB −1.2
MonacorFTR18-4080HDX/8
No current priceFs39 Hz −7%
Qts0.43 +7%
Vas174.9 L +29%, worse
BL21.3 T·m −3%
Xmax10.1 mm –
Sensitivity95.6 dB –
Precision DevicesPD.185C001
No current priceFs32 Hz −24%, better
Qts0.40 –
Vas302 L +122%, worse
BL21 T·m −5%
Xmax10.5 mm +5%
Sensitivity95.7 dB –
CelestionERPROX18
No current priceFs35 Hz −17%, better
Qts0.38 −5%
Vas188.9 L +39%, worse
BL24.4 T·m +11%, better
Xmax9.5 mm −5%
Sensitivity94.7 dB −1.2
BMS18N840
No current priceFs30 Hz −28%, better
Qts0.37 −8%
Vas261 L +92%, worse
BL23 T·m +5%
Xmax10 mm –
Sensitivity94.6 dB −1.3
Dayton Audio18SW1200F-8
No current priceFs32 Hz −24%, better
Qts0.40 –
Vas287.7 L +112%, worse
BL24.4 T·m +11%, better
Xmax10.6 mm +6%
Sensitivity95.5 dB –
Sica18 S 4 PL
No current priceFs36 Hz −14%, better
Qts0.39 –
Vas189 L +39%, worse
BL23.5 T·m +7%
Xmax8 mm −20%, worse
Sensitivity95.3 dB −0.6
BishopSoundBDP18/4
No current priceFs39 Hz −8%
Qts0.40 –
Vas183.3 L +35%, worse
BL17.1 T·m −22%, worse
Xmax11.3 mm +13%, better
Sensitivity96.2 dB –
Sica18 PFS 4
No current priceFs29 Hz −32%, better
Qts0.37 −8%
Vas245.9 L +81%, worse
BL24.6 T·m +12%, better
Xmax9.5 mm −5%
Sensitivity93.5 dB −2.4, worse
P.Audio18NT-115XB
No current priceFs33 Hz −21%, better
Qts0.44 +10%
Vas112.7 L −17%, better
BL29.0 T·m +32%, better
Xmax9.8 mm –
Sensitivity91.6 dB −4.3, worse
No current price
Fs33 Hz −21%, better
Qts0.39 −4%
Vas257 L +89%, worse
BL22.4 T·m –
Xmax12 mm +20%, better
Sensitivity95.6 dB –
Eighteen Sound18LW2500
No current priceFs35 Hz −17%, better
Qts0.44 +10%
Vas135 L –
BL20 T·m −9%
Xmax14 mm +40%, better
Sensitivity93.1 dB −2.8, worse
P.Audio18BM-1000S
No current priceFs35 Hz −17%, better
Qts0.40 –
Vas212.1 L +56%, worse
BL23.8 T·m +8%
Xmax8 mm −20%, worse
Sensitivity95.3 dB −0.6
CelestionFTR18-4080FDX
No current priceFs37 Hz −11%, better
Qts0.41 +3%
Vas160.7 L +18%, worse
BL25.1 T·m +14%, better
Xmax6 mm −40%, worse
Sensitivity94.9 dB −1
P.Audio18NT-100XB
No current priceFs35 Hz −17%, better
Qts0.41 –
Vas171.3 L +26%, worse
BL24.6 T·m +12%, better
Xmax7 mm −30%, worse
Sensitivity94.4 dB −1.5
PRV Audio18SW2000
No current priceFs32 Hz −23%, better
Qts0.45 +12%, worse
Vas289.9 L +113%, worse
BL22.1 T·m –
Xmax9.6 mm −4%
Sensitivity95.2 dB −0.7
P.Audio19NT-115XB
No current priceFs35 Hz −17%, better
Qts0.39 –
Vas206 L +51%, worse
BL29 T·m +32%, better
Xmax9.5 mm −5%
Sensitivity95.4 dB −0.5
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
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