- Net volume
- 17L
- Tuning
- 63Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
8-inch LF driver · 8CL series · 51 mm voice coil · 200 W
B&C 8CL51 8Ω
70–5000 Hz
£92.98
SteadyJP Leisure · In stock · All 6 offers
- Fs
- 69Hz
- Xmax
- 6.5mm
- SPL
- 92dB
- Pe
- 200W
- BL
- 12T·m
- Vd
- 143cm³
- Qts
- 0.41
- Vas
- 13L
Published graphs
B&C 8CL51 is an 8-inch 8 ohm LF driver rated at 200 W RMS. The validated T/S data includes Fs 69 Hz, Qts 0.41, Vas 12.5 L, Xmax 6.5 mm, sensitivity 91.7 dB, plus 143 cm³ Vd and 157 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 £88.75.
The published T/S values agree with each other
Thiele/Small
- Fs
- 69Hz
- Qts
- 0.41
- Qes
- 0.44
- Qms
- 5.6
- Vas
- 12.5L
- Re
- 5.1Ω
- Le
- 0.50mH
Motor and cone
- BL
- 12T·m
- Sd
- 220cm²
- Mms
- 29g
- Xmax
- 6.5mm
- Vd †
- 143cm³
- Voice coil
- 51mm
- Flux density
- 1.15T
Power and response
- Sensitivity †
- 91.7dB
- Manufacturer sensitivity
- 94dB
- Power
- 200W
- Nominal power
- 200W
- Impedance
- 8Ω
- Min. impedance
- 6.3Ω
- Range
- 70–5000Hz
- EBP †
- 157 · Leans vented
Size and mounting
- Diameter
- 209mm
- Cutout
- 186mm
- Bolt circle
- 199mm
- Depth
- 96mm
- Weight
- 1.3kg
Sensitivity shows 91.7 dB, calculated from the T/S values. B&C publishes 94.0 dB, 2.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 12T·m
- Fs
- 69Hz
- Le
- 0.50mH
- Re
- 5.1Ω
- Sd
- 220cm²
- Mms
- 29g
- Qes
- 0.44
- Qms
- 5.6
- Qts
- 0.41
- SPL
- 91.7dB
- Vas
- 12.5L
- Xmax
- 6.5mm
- Power
- 200W
- Impedance
- 8Ω
- Flux density
- 1.15T
- Sensitivity
- 94dB
- Low limit
- 70Hz
- Nominal power
- 200W
- Calculated sensitivity †
- 91.7dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 94dB
- Min. impedance
- 6.3Ω
- Voice coil
- 51mm
- Weight
- 1.3kg
- Diameter
- 209mm
- Depth
- 96mm
- Cutout
- 186mm
- Bolt circle
- 199mm
- Bl
- 12 Tm
- Fs
- 69 Hz
- Le
- 0.5 mH
- Re
- 5.1 Ω
- Sd
- 220 cm² (34.1 in²)
- Ebp
- 157 Hz
- Mms
- 29 g
- Qes
- 0.44
- Qms
- 5.6
- Qts
- 0.41
- Vas
- 12.5 dm³ (0.44 ft³)
- Η0
- 0.9 %
- Cone
- RCK008CL518
- Xmax
- 6.5 mm
- Xvar
- 6 mm
- Depth
- 96 mm (3.78 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 1.25 kg (2.76 lb)
- Pole design
- Straight Pole
- Sensitivity
- 94 dB
- Flux density
- 1.15 T
- Shipping box
- 255x255x150 mm (10.04x10.04x5.91 in)
- Winding depth
- 17 mm (0.67 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Glass Fibre
- Frequency range
- 70 Hz - 5000 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 1.7 kg (3.75 lb)
- Nominal diameter
- 200 mm (8 in)
- Overall diameter
- 209 mm (8.23 in)
- Winding material
- Copper
- Minimum impedance
- 6.3 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 8 mm (0.31 in)
- Recommended tuning
- 63 Hz
- Voice coil diameter
- 51 mm (2 in)
- Bolt circle diameter
- 199 mm (7.83 in)
- Recommended enclosure
- 17 dm³ (0.6 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 186 mm (7.32 in)
- Nominal power handling
- 200 W
- Continuous power handling
- 400 W
- Flange and gasket thickness
- 9 mm (0.35 in)
- Air volume occupied by driver
- 1.1 dm³ (0.04 ft³)
B&C’s suggested box
From B&C’s 8CL51 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 8CL51. Clear differences are green when better and red when worse.
This driver8CL51
Best price
£88.75
Fs
69 Hz
Qts
0.41
Vas
12.5 L
BL
12 T·m
Xmax
6.5 mm
Sensitivity
91.7 dB
Power
200 W
FaitalPRO8FE300
£43.52 · 51% less, betterFs70 Hz –
Qts0.44 +7%
Vas15.7 L +26%, worse
BL11.3 T·m −6%
Xmax5.5 mm −15%, worse
Sensitivity92.7 dB +1
SB AudienceBIANCO-8MW250
£49.00 · 45% less, betterFs74 Hz +7%
Qts0.40 –
Vas13.8 L +10%, worse
BL11 T·m −8%
Xmax6.5 mm –
Sensitivity93 dB +1.3
PeerlessGBS-200F35CP02-04
£54.66 · 38% less, betterFs42 Hz −39%, better
Qts0.44 +7%
Vas13.9 L +11%, worse
BL11.7 T·m –
Xmax7.8 mm +20%, better
Sensitivity85.4 dB −6.3, worse
CelestionTRUVOX 0820
£59.70 · 33% less, betterFs74 Hz +7%
Qts0.39 −5%
Vas17.3 L +38%, worse
BL11.5 T·m −4%
Xmax5 mm −23%, worse
Sensitivity94.3 dB +2.6, better
LavoceWAF082.00
£71.42 · 20% less, betterFs78 Hz +13%, worse
Qts0.37 −10%
Vas11.9 L −5%
BL12.5 T·m +4%
Xmax6.3 mm −3%
Sensitivity93.4 dB +1.7
Beyma8MI100
£73.79 · 17% less, betterFs90 Hz +30%, worse
Qts0.45 +10%
Vas12 L −4%
BL11.5 T·m −4%
Xmax3 mm −54%, worse
Sensitivity94.6 dB +2.9, better
FaitalPRO8PR320
£75.00 · 15% less, betterFs65 Hz −6%
Qts0.41 –
Vas13.1 L +5%
BL12.9 T·m +8%
Xmax7.3 mm +13%, better
Sensitivity91.3 dB –
CIAREPWA8.50
£77.03 · 13% less, betterFs74 Hz +7%
Qts0.38 −7%
Vas12 L −4%
BL12.7 T·m +6%
Xmax6.8 mm +5%
Sensitivity92.8 dB +1.1
Beyma8G40
£100.07 · 13% more, worseFs70 Hz –
Qts0.36 −12%, better
Vas17 L +36%, worse
BL12.2 T·m –
Xmax6.5 mm –
Sensitivity93.9 dB +2.2, better
B&C8NDL51
£102.00 · 15% more, worseFs66 Hz −4%
Qts0.37 −10%
Vas14 L +12%, worse
BL12.4 T·m +3%
Xmax7 mm +8%
Sensitivity91.9 dB –
B&C8BG51
£110.00 · 24% more, worseFs52 Hz −25%, better
Qts0.40 –
Vas18 L +44%, worse
BL11.8 T·m –
Xmax6.5 mm –
Sensitivity89.8 dB −1.9
WavecorSW178WA01
£120.66 · 36% more, worseFs38 Hz −45%, better
Qts0.36 −11%, better
Vas12.2 L –
BL12 T·m –
Xmax5 mm −23%, worse
Sensitivity84.6 dB −7.1, worse
CelestionNTR08-2011D
£125.00 · 41% more, worseFs85 Hz +23%, worse
Qts0.44 +6%
Vas10.3 L −18%, better
BL12.0 T·m –
Xmax6 mm −8%
Sensitivity92.7 dB +1
FaitalPRO8HX150
£135.13 · 52% more, worseFs76 Hz +10%, worse
Qts0.41 –
Vas13 L +4%
BL11.6 T·m −3%
Xmax4.9 mm −24%, worse
Sensitivity93.3 dB +1.6
LavoceCSF082.00K
£141.38 · 59% more, worseFs81 Hz +17%, worse
Qts0.40 –
Vas14.8 L +18%, worse
BL11.0 T·m −8%
Xmax5 mm −23%, worse
Sensitivity94.5 dB +2.8, better
B&C8CX21
£151.61 · 71% more, worseFs74 Hz +7%
Qts0.36 −12%, better
Vas15 L +20%, worse
BL11.5 T·m −4%
Xmax5.5 mm −15%, worse
Sensitivity94 dB +2.3, better
SB AudienceNERO-8MWN400D
£152.56 · 72% more, worseFs63 Hz −9%
Qts0.38 −7%
Vas13.9 L +11%, worse
BL11.9 T·m –
Xmax6.7 mm +3%
Sensitivity91.3 dB –
WavecorSW182BD03
£161.18 · 82% more, worseFs35 Hz −49%, better
Qts0.44 +7%
Vas12.7 L –
BL7.6 T·m −37%, worse
Xmax7 mm +8%
Sensitivity82.9 dB −8.8, worse
Eighteen Sound8CX650
£344.69 · 288% more, worseFs65 Hz −6%
Qts0.35 −15%, better
Vas16.6 L +33%, worse
BL12 T·m –
Xmax6 mm −8%
Sensitivity92.9 dB +1.2
CelestionCNX0820
No current priceFs95 Hz +37%, worse
Qts0.40 −4%
Vas9.9 L −21%, better
BL12.0 T·m –
Xmax6 mm −8%
Sensitivity94.7 dB +3, better
BMS8S219
No current priceFs82 Hz +19%, worse
Qts0.41 –
Vas9.7 L −22%, better
BL13.3 T·m +11%, better
Xmax6.3 mm −3%
Sensitivity92.8 dB +1.1
FaitalPRO8HX210
No current priceFs83 Hz +20%, worse
Qts0.44 +7%
Vas10.1 L −19%, better
BL11.9 T·m –
Xmax6.5 mm –
Sensitivity92.7 dB +1
BMS8N519
No current priceFs75 Hz +9%
Qts0.37 −10%
Vas10.9 L −13%, better
BL13.8 T·m +15%, better
Xmax6.3 mm −3%
Sensitivity92.5 dB +0.8
Oberton8NCX
No current priceFs77 Hz +12%, worse
Qts0.40 –
Vas14.9 L +19%, worse
BL10.1 T·m −16%, worse
Xmax5.3 mm −19%, worse
Sensitivity94 dB +2.3, better
LavoceCAF082.00K
No current priceFs72 Hz +4%
Qts0.34 −17%, better
Vas15.1 L +21%, worse
BL11.7 T·m –
Xmax6.7 mm +3%
Sensitivity93.7 dB +2, better
Tang BandW8-1363SBF
No current priceFs32 Hz −54%, better
Qts0.39 −5%
Vas13.4 L +7%
BL13.0 T·m +9%
Xmax12 mm +85%, better
Sensitivity82.1 dB −9.6, worse
MonacorSP-8/150PA
No current priceFs88 Hz +28%, worse
Qts0.43 +5%
Vas12 L −4%
BL12.6 T·m +5%
Xmax1.3 mm −81%, worse
Sensitivity94.3 dB +2.6, better
CIARENDK8
No current priceFs57 Hz −17%, better
Qts0.40 –
Vas12.9 L +3%
BL14.4 T·m +20%, better
Xmax8.5 mm +31%, better
Sensitivity89.4 dB −2.3, worse
LavoceWSF081.82
No current priceFs79 Hz +14%, worse
Qts0.38 −7%
Vas14.3 L +14%, worse
BL11.3 T·m −6%
Xmax4.6 mm −29%, worse
Sensitivity94.2 dB +2.5, better
No photo
PHL Audio2560-3
No current priceFs79 Hz +14%, worse
Qts0.45 +10%
Vas10.7 L −14%, better
BL10.4 T·m −13%, worse
Xmax5.5 mm −15%, worse
Sensitivity92.3 dB +0.6
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 | £92.98, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £92.98 | In stock | Visit shop at JP Leisure | |
Blue Aran 4-6 weeks | £93.40 | 0.5% above the lowest price | Usually available in 4-6 weeks | Visit shop at Blue Aran |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£89.18 → £92.98Up 4.3% from £89.18
- 23 JunBlue Aran£93.46 → £93.40Down 0.1% from £93.46
- 5 JunBlue Aran£86.09 → £93.46Up 8.6% from £86.09