- Net volume
- 40L
- Tuning
- 55Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
12-inch LF driver · 12FW series · 64 mm voice coil · 250 W
B&C 12FW64 8Ω
8 Ω · 55–3000 Hz
£136.93
SteadyJP Leisure · In stock · All 5 offers
- Fs
- 55Hz
- Xmax
- 5mm
- SPL
- 97dB
- Pe
- 250W
- BL
- 15.5T·m
- Vd
- 261cm³
- Qts
- 0.29
- Vas
- 64L
Published graphs
B&C 12FW64 is a 12-inch 8 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 55 Hz, Qts 0.29, Vas 64 L, Xmax 5 mm, sensitivity 97.3 dB, plus 261 cm³ Vd and 172 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 £136.93.
The published T/S values agree with each other
Thiele/Small
- Fs
- 55Hz
- Qts
- 0.29
- Qes
- 0.32
- Qms
- 3.5
- Vas
- 64L
- Re
- 5.2Ω
- Le
- 1mH
Motor and cone
- BL
- 15.5T·m
- Sd
- 522cm²
- Mms
- 47g
- Xmax
- 5mm
- Vd †
- 261cm³
- Voice coil
- 64mm
- Flux density
- 1.30T
Power and response
- Sensitivity †
- 97.3dB
- Manufacturer sensitivity
- 98dB
- Power
- 250W
- Nominal power
- 250W
- Impedance
- 8Ω
- Min. impedance
- 6.7Ω
- Range
- 55–3000Hz
- EBP †
- 172 · Leans vented
Size and mounting
- Diameter
- 315mm
- Cutout
- 283mm
- Bolt circle
- 298mm
- Depth
- 136mm
- Weight
- 5.7kg
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 15.5T·m
- Fs
- 55Hz
- Le
- 1mH
- Re
- 5.2Ω
- Sd
- 522cm²
- Mms
- 47g
- Qes
- 0.32
- Qms
- 3.5
- Qts
- 0.29
- SPL
- 97.3dB
- Vas
- 64L
- Xmax
- 5mm
- Power
- 250W
- Impedance
- 8Ω
- Flux density
- 1.30T
- Sensitivity
- 98dB
- Low limit
- 55Hz
- Nominal power
- 250W
- Calculated sensitivity †
- 97.3dB
- High limit
- 3000Hz
- Manufacturer sensitivity
- 98dB
- Min. impedance
- 6.7Ω
- Voice coil
- 64mm
- Weight
- 5.7kg
- Diameter
- 315mm
- Depth
- 136mm
- Cutout
- 283mm
- Bolt circle
- 298mm
- Bl
- 15.5 Tm
- Fs
- 55 Hz
- Le
- 1 mH
- Re
- 5.2 Ω
- Sd
- 522 cm² (80.9 in²)
- Ebp
- 172 Hz
- Mms
- 47 g
- Qes
- 0.32
- Qms
- 3.5
- Qts
- 0.29
- Vas
- 64 dm³ (2.26 ft³)
- Η0
- 3.6 %
- Cone
- RCK12FW648
- Xmax
- 5 mm
- Xvar
- 5 mm
- Depth
- 136 mm (5.35 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 5.65 kg (12.46 lb)
- Pole design
- T-Pole
- Sensitivity
- 98 dB
- Flux density
- 1.3 T
- Shipping box
- 360x360x200 mm (14.17x14.17x7.87 in)
- Winding depth
- 14 mm (0.55 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Glass Fibre
- Frequency range
- 55 Hz - 3000 Hz
- Magnet material
- Ferrite
- Shipping weight
- 6.55 kg (14.44 lb)
- Nominal diameter
- 320 mm (12 in)
- Overall diameter
- 315 mm (12.4 in)
- Winding material
- Aluminium
- Minimum impedance
- 6.7 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 8 mm (0.31 in)
- Recommended tuning
- 55 Hz
- Voice coil diameter
- 64 mm (2.5 in)
- Bolt circle diameter
- 298 mm (11.7 in)
- Recommended enclosure
- 40 dm³ (1.4 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 283 mm (11.1 in)
- Nominal power handling
- 250 W
- Continuous power handling
- 500 W
- Flange and gasket thickness
- 13 mm (0.51 in)
- Air volume occupied by driver
- 3 dm³ (0.1 ft³)
B&C’s suggested box
From B&C’s 12FW64 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 12FW64. Clear differences are green when better and red when worse.
This driver12FW64
Best price
£136.93
Fs
55 Hz
Qts
0.29
Vas
64 L
BL
15.5 T·m
Xmax
5 mm
Sensitivity
97.3 dB
Power
250 W
LavoceWSF122.50
£75.52 · 45% less, betterFs49 Hz −11%, better
Qts0.33 +14%, worse
Vas70.2 L +10%
BL17.2 T·m +11%, better
Xmax4.7 mm −6%
Sensitivity95.8 dB −1.5
B&C12CL64
£79.00 · 42% less, betterFs52 Hz −5%
Qts0.30 +3%
Vas64 L –
BL17.5 T·m +13%, better
Xmax4.5 mm −10%, worse
Sensitivity96.5 dB −0.8
Dayton AudioPA310-8
£83.27 · 39% less, betterFs39 Hz −29%, better
Qts0.29 –
Vas91.8 L +43%, worse
BL18 T·m +16%, better
Xmax5 mm –
Sensitivity94.6 dB −2.7, worse
CelestionTF1225E
£99.00 · 28% less, betterFs53 Hz −4%
Qts0.33 +15%, worse
Vas67.7 L +6%
BL17.7 T·m +14%, better
Xmax5.3 mm +5%
Sensitivity96.3 dB −1
MonacorTF1225E/8
£105.87 · 23% less, betterFs53 Hz −4%
Qts0.33 +15%, worse
Vas67 L +5%
BL17.7 T·m +14%, better
Xmax5 mm –
Sensitivity96.3 dB −1
CIAREPWA12.75
£122.81 · 10% less, betterFs53 Hz −4%
Qts0.30 +3%
Vas52 L −19%, better
BL19.6 T·m +26%, better
Xmax5.8 mm +16%, better
Sensitivity95.9 dB −1.4
RCFMB12G301
£142.33 · 4% moreFs53 Hz −4%
Qts0.27 −7%
Vas72 L +13%, worse
BL17 T·m +10%
Xmax6 mm +20%, better
Sensitivity97.9 dB +0.6
REDCATT12NPM
£169.31 · 24% more, worseFs49 Hz −11%, better
Qts0.31 +7%
Vas63.6 L –
BL17.3 T·m +12%, better
Xmax4.0 mm −19%, worse
Sensitivity95.7 dB −1.6
EminenceKAPPALITE 3012HO
£189.29 · 38% more, worseFs52 Hz −5%
Qts0.32 +10%, worse
Vas81.1 L +27%, worse
BL15.9 T·m –
Xmax6.2 mm +24%, better
Sensitivity97.4 dB –
FaitalPRO12FH520
£197.29 · 44% more, worseFs50 Hz −9%
Qts0.29 –
Vas73.7 L +15%, worse
BL17.3 T·m +12%, better
Xmax7.3 mm +45%, better
Sensitivity96.9 dB –
Sica12 N 3 PL
£210.04 · 53% more, worseFs46 Hz −16%, better
Qts0.30 +3%
Vas87.9 L +37%, worse
BL16 T·m +3%
Xmax5.5 mm +10%, better
Sensitivity96.4 dB −0.9
B&C12FCX76
£294.14 · 115% more, worseFs47 Hz −15%, better
Qts0.34 +17%, worse
Vas82 L +28%, worse
BL15.6 T·m –
Xmax5 mm –
Sensitivity95.9 dB −1.4
Eighteen Sound12NCX750
£426.63 · 212% more, worseFs58 Hz +5%
Qts0.29 –
Vas63 L –
BL17.5 T·m +13%, better
Xmax5.5 mm +10%, better
Sensitivity98 dB +0.7
Eighteen Sound12NCX910
£436.54 · 219% more, worseFs57 Hz +4%
Qts0.30 +3%
Vas58 L −9%
BL18.1 T·m +17%, better
Xmax6.9 mm +38%, better
Sensitivity97.4 dB –
Eighteen Sound12NCX750H
£444.75 · 225% more, worseFs58 Hz +5%
Qts0.29 –
Vas63 L –
BL17.5 T·m +13%, better
Xmax5.5 mm +10%, better
Sensitivity98 dB +0.7
Eighteen Sound12NCX910N
£478.98 · 250% more, worseFs57 Hz +4%
Qts0.30 +3%
Vas58 L −9%
BL18.1 T·m +17%, better
Xmax6.9 mm +38%, better
Sensitivity97.4 dB –
Oberton12NCX
No current priceFs58 Hz +6%
Qts0.30 +3%
Vas62.9 L –
BL17.2 T·m +11%, better
Xmax5.3 mm +5%
Sensitivity98.1 dB +0.8
Sica12 C 2.5 CP
No current priceFs51 Hz −8%
Qts0.30 +3%
Vas84.5 L +32%, worse
BL17.3 T·m +12%, better
Xmax5 mm –
Sensitivity97.5 dB –
FaneCOLOSSUS 12MB
No current priceFs55 Hz –
Qts0.29 –
Vas56 L −13%, better
BL18.3 T·m +18%, better
Xmax5.5 mm +10%, better
Sensitivity96.5 dB −0.8
P.Audio12BMA-500B
No current priceFs57 Hz +4%
Qts0.34 +17%, worse
Vas61.4 L −4%
BL16.7 T·m +8%
Xmax5 mm –
Sensitivity97 dB –
BMS12S302
No current priceFs45 Hz −18%, better
Qts0.25 −13%, better
Vas65 L –
BL15.7 T·m –
Xmax4.5 mm −10%, worse
Sensitivity95.5 dB −1.8
CelestionTN1225
No current priceFs61 Hz +12%, worse
Qts0.31 +6%
Vas63.7 L –
BL15.8 T·m –
Xmax2.5 mm −50%, worse
Sensitivity98.4 dB +1.1
PRV Audio12MB2000FT-NDY
No current priceFs55 Hz –
Qts0.30 +3%
Vas71.5 L +12%, worse
BL17.7 T·m +14%, better
Xmax6 mm +20%, better
Sensitivity97.9 dB +0.6
MonacorSP-12A/302PA
No current priceFs50 Hz −9%
Qts0.34 +17%, worse
Vas77 L +20%, worse
BL17.0 T·m +10%
Xmax5 mm –
Sensitivity96.4 dB −0.9
B&C12FL76
No current priceFs50 Hz −9%
Qts0.30 +3%
Vas57 L −11%, better
BL18.7 T·m +21%, better
Xmax6 mm +20%, better
Sensitivity95.5 dB −1.8
PRV Audio12MB2000FT
No current priceFs56 Hz –
Qts0.32 +10%, worse
Vas66.9 L +5%
BL17.7 T·m +14%, better
Xmax6 mm +20%, better
Sensitivity97.5 dB –
Oberton12HCX
No current priceFs53 Hz −4%
Qts0.33 +15%, worse
Vas55.5 L −13%, better
BL17.8 T·m +15%, better
Xmax5.3 mm +5%
Sensitivity95.6 dB −1.7
P.Audio12BM-500B
No current priceFs52 Hz −5%
Qts0.35 +21%, worse
Vas69.8 L +9%
BL16.6 T·m +7%
Xmax4.8 mm −4%
Sensitivity96.3 dB −1
Oberton12CX
No current priceFs51 Hz −7%
Qts0.35 +19%, worse
Vas58.5 L −9%
BL17.4 T·m +12%, better
Xmax5.3 mm +5%
Sensitivity95.4 dB −1.9
Eighteen Sound12NCX910BE
No current priceFs57 Hz +4%
Qts0.30 +3%
Vas58 L −9%
BL18.1 T·m +17%, better
Xmax6.9 mm +38%, better
Sensitivity97.4 dB –
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 | £136.93, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £136.93 | In stock | Visit shop at JP Leisure | |
Blue Aran 5-7 weeks | £144.40 | 5.5% above the lowest price | 2 in stock | Visit shop at Blue Aran |
Audio Video Parts Import VAT and duty may apply | £111.77 | Special order | Visit shop at Audio Video Parts |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£133.76 → £136.93Up 2.4% from £133.76
- 23 JunBlue Aran£144.56 → £144.40Down 0.1% from £144.56
- 5 JunBlue Aran£136.12 → £144.56Up 6.2% from £136.12