- 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 · 12FL series · 64 mm voice coil · 250 W
B&C 12FL64 8Ω
8 Ω · 50–4000 Hz
No current price
- Fs
- 51Hz
- Xmax
- 5mm
- SPL
- 95dB
- Pe
- 250W
- BL
- 20.2T·m
- Vd
- 261cm³
- Qts
- 0.32
- Vas
- 50L
Published graphs
B&C 12FL64 is a 12-inch 8 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 51 Hz, Qts 0.32, Vas 50 L, Xmax 5 mm, sensitivity 94.9 dB, plus 261 cm³ Vd and 150 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
- 51Hz
- Qts
- 0.32
- Qes
- 0.34
- Qms
- 6.6
- Vas
- 50L
- Re
- 5.7Ω
- Le
- 1.60mH
Motor and cone
- BL
- 20.2T·m
- Sd
- 522cm²
- Mms
- 75g
- Xmax
- 5mm
- Vd †
- 261cm³
- Voice coil
- 64mm
- Flux density
- 1.20T
Power and response
- Sensitivity †
- 94.9dB
- Manufacturer sensitivity
- 96.5dB
- Power
- 250W
- Nominal power
- 250W
- Impedance
- 8Ω
- Min. impedance
- 7Ω
- Range
- 50–4000Hz
- EBP †
- 150 · Leans vented
Size and mounting
- Diameter
- 315mm
- Cutout
- 283mm
- Bolt circle
- 298mm
- Depth
- 135mm
- Weight
- 5kg
Sensitivity shows 94.9 dB, calculated from the T/S values. B&C publishes 96.5 dB, 1.6 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 20.2T·m
- Fs
- 51Hz
- Le
- 1.60mH
- Re
- 5.7Ω
- Sd
- 522cm²
- Mms
- 75g
- Qes
- 0.34
- Qms
- 6.6
- Qts
- 0.32
- SPL
- 94.9dB
- Vas
- 50L
- Xmax
- 5mm
- Power
- 250W
- Impedance
- 8Ω
- Flux density
- 1.20T
- Sensitivity
- 96.5dB
- Low limit
- 50Hz
- Nominal power
- 250W
- Calculated sensitivity †
- 94.9dB
- High limit
- 4000Hz
- Manufacturer sensitivity
- 96.5dB
- Min. impedance
- 7Ω
- Voice coil
- 64mm
- Weight
- 5kg
- Diameter
- 315mm
- Depth
- 135mm
- Cutout
- 283mm
- Bolt circle
- 298mm
- Bl
- 20.2 Tm
- Fs
- 51 Hz
- Le
- 1.6 mH
- Re
- 5.7 Ω
- Sd
- 522 cm² (80.9 in²)
- Ebp
- 150 Hz
- Mms
- 75 g
- Qes
- 0.34
- Qms
- 6.6
- Qts
- 0.32
- Vas
- 50 dm³ (1.76 ft³)
- Η0
- 1.9 %
- Cone
- RCK12FL648
- Xmax
- 5 mm
- Xvar
- 6 mm
- Depth
- 135 mm (5.3 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 5 kg (11 lb)
- Pole design
- T-Pole
- Sensitivity
- 96.5 dB
- Flux density
- 1.2 T
- Shipping box
- 360x360x200 mm (14.17x14.17x7.87 in)
- Winding depth
- 13 mm (0.51 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Glass Fibre
- Frequency range
- 50 Hz - 4000 Hz
- Shipping weight
- 5.9 kg (13.01 lb)
- Nominal diameter
- 320 mm (12 in)
- Overall diameter
- 315 mm (12.4 in)
- Winding material
- Copper
- Minimum impedance
- 7 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 9 mm (0.35 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
- 14 mm (0.55 in)
- Air volume occupied by driver
- 3 dm³ (0.1 ft³)
B&C’s suggested box
From B&C’s 12FL64 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 12FL64. Clear differences are green when better and red when worse.
This driver12FL64
Best price
–
Fs
51 Hz
Qts
0.32
Vas
50 L
BL
20.2 T·m
Xmax
5 mm
Sensitivity
94.9 dB
Power
250 W
LavoceWSF122.50
£75.52Fs49 Hz −4%
Qts0.33 +3%
Vas70.2 L +40%, worse
BL17.2 T·m −15%, worse
Xmax4.7 mm −6%
Sensitivity95.8 dB +0.9
B&C12CL64
£79.00Fs52 Hz –
Qts0.30 −6%
Vas64 L +28%, worse
BL17.5 T·m −13%, worse
Xmax4.5 mm −10%, worse
Sensitivity96.5 dB +1.6
CelestionTF1225E
£99.00Fs53 Hz +3%
Qts0.33 +4%
Vas67.7 L +35%, worse
BL17.7 T·m −13%, worse
Xmax5.3 mm +5%
Sensitivity96.3 dB +1.4
MonacorTF1225E/8
£105.60Fs53 Hz +3%
Qts0.33 +4%
Vas67 L +34%, worse
BL17.7 T·m −13%, worse
Xmax5 mm –
Sensitivity96.3 dB +1.4
CIAREPWA12.64
£115.74Fs55 Hz +8%
Qts0.35 +9%
Vas58 L +16%, worse
BL17.6 T·m −13%, worse
Xmax4.5 mm −10%, worse
Sensitivity96.3 dB +1.4
CIAREPWA12.75
£122.50Fs53 Hz +4%
Qts0.30 −6%
Vas52 L +4%
BL19.6 T·m –
Xmax5.8 mm +16%, better
Sensitivity95.9 dB +1
CelestionFTR12-3070C
£134.32Fs65 Hz +28%, worse
Qts0.32 –
Vas43.7 L −13%, better
BL18.6 T·m −8%
Xmax5.5 mm +10%, better
Sensitivity97.3 dB +2.4, better
PRV Audio12MR2000
£143.49Fs57 Hz +12%, worse
Qts0.33 +3%
Vas52.5 L +5%
BL21.3 T·m +5%
Xmax6.6 mm +32%, better
Sensitivity96.6 dB +1.7
B&C12FW88
£163.69Fs53 Hz +4%
Qts0.33 +3%
Vas45.7 L −9%
BL19.5 T·m −3%
Xmax8 mm +60%, better
Sensitivity94.9 dB –
FaitalPRO12HP1010
£191.59Fs45 Hz −12%, better
Qts0.34 +6%
Vas56.5 L +13%, worse
BL19.8 T·m –
Xmax9.3 mm +85%, better
Sensitivity93.7 dB −1.2
PRV Audio12MR2000-NDY
£211.49Fs54 Hz +7%
Qts0.34 +6%
Vas48.2 L −4%
BL22.8 T·m +13%, better
Xmax6.2 mm +23%, better
Sensitivity95.5 dB +0.6
Eighteen Sound12LW1400
£260.72Fs45 Hz −12%, better
Qts0.30 −6%
Vas55 L +10%, worse
BL20 T·m –
Xmax8.3 mm +65%, better
Sensitivity94 dB −0.9
Eighteen Sound12NTLW3500
£288.08Fs53 Hz +4%
Qts0.33 +3%
Vas45 L −10%, better
BL19.5 T·m −3%
Xmax8.3 mm +66%, better
Sensitivity94.8 dB –
Dayton AudioRSS315HO-4
£294.84Fs26 Hz −49%, better
Qts0.31 −3%
Vas53.7 L +7%
BL20 T·m –
Xmax12.3 mm +146%, better
Sensitivity86.7 dB −8.2, worse
Sica12 PNS 4
£362.42Fs42 Hz −18%, better
Qts0.31 −3%
Vas50.2 L –
BL22.3 T·m +10%, better
Xmax9.5 mm +90%, better
Sensitivity92.6 dB −2.3, worse
P.Audio12NT-88MB
No current priceFs55 Hz +8%
Qts0.32 –
Vas49.1 L –
BL20.9 T·m +3%
Xmax5 mm –
Sensitivity95.8 dB +0.9
P.Audio12NX-76MB
No current priceFs55 Hz +8%
Qts0.31 −3%
Vas50.3 L –
BL21.4 T·m +6%
Xmax4.8 mm −5%
Sensitivity96.3 dB +1.4
MonacorFTR12-3070C/8
No current priceFs65 Hz +28%, worse
Qts0.32 –
Vas43.7 L −13%, better
BL18.6 T·m −8%
Xmax5.5 mm +10%, better
Sensitivity97.3 dB +2.4, better
Oberton12HCX
No current priceFs53 Hz +3%
Qts0.33 +4%
Vas55.5 L +11%, worse
BL17.8 T·m −12%, worse
Xmax5.3 mm +5%
Sensitivity95.6 dB +0.7
CelestionNTR12-3018D
No current priceFs59 Hz +15%, worse
Qts0.30 −8%
Vas50.4 L –
BL19.9 T·m –
Xmax4 mm −20%, worse
Sensitivity97 dB +2.1, better
P.Audio12BMA-500B
No current priceFs57 Hz +12%, worse
Qts0.34 +6%
Vas61.4 L +23%, worse
BL16.7 T·m −17%, worse
Xmax5 mm –
Sensitivity97 dB +2.1, better
FaneCOLOSSUS 12MB
No current priceFs55 Hz +8%
Qts0.29 −11%, better
Vas56 L +12%, worse
BL18.3 T·m −9%
Xmax5.5 mm +10%, better
Sensitivity96.5 dB +1.6
CelestionCF1230F
No current priceFs57 Hz +11%, worse
Qts0.32 –
Vas49.6 L –
BL18.3 T·m −9%
Xmax7.5 mm +50%, better
Sensitivity96.2 dB +1.3
Oberton12CX
No current priceFs51 Hz –
Qts0.35 +8%
Vas58.5 L +17%, worse
BL17.4 T·m −14%, worse
Xmax5.3 mm +5%
Sensitivity95.4 dB +0.5
Eighteen Sound12LW801
No current priceFs54 Hz +6%
Qts0.33 +3%
Vas41 L −18%, better
BL20.3 T·m –
Xmax8 mm +60%, better
Sensitivity94.8 dB –
Oberton12NCX
No current priceFs58 Hz +14%, worse
Qts0.30 −6%
Vas62.9 L +26%, worse
BL17.2 T·m −15%, worse
Xmax5.3 mm +5%
Sensitivity98.1 dB +3.2, better
P.Audio12FT-88MB
No current priceFs48 Hz −6%
Qts0.37 +16%, worse
Vas45.4 L −9%
BL19.1 T·m −5%
Xmax4.7 mm −6%
Sensitivity93.1 dB −1.8
B&C12FL76
No current priceFs50 Hz –
Qts0.30 −6%
Vas57 L +14%, worse
BL18.7 T·m −7%
Xmax6 mm +20%, better
Sensitivity95.5 dB +0.6
Oberton12NSW600
No current priceFs42 Hz −18%, better
Qts0.32 –
Vas62.3 L +25%, worse
BL20.2 T·m –
Xmax14.3 mm +185%, better
Sensitivity93.5 dB −1.4
CIARE12.75W1
No current priceFs49 Hz −4%
Qts0.33 +3%
Vas67 L +34%, worse
BL18.9 T·m −6%
Xmax6 mm +20%, better
Sensitivity95.7 dB +0.8
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
No current price found. Pricing may appear after the next vendor refresh.