- 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 · 76 mm voice coil · 400 W
B&C 12FL76 8Ω
8 Ω · 50–4000 Hz
No current price
- Fs
- 50Hz
- Xmax
- 6mm
- SPL
- 96dB
- Pe
- 400W
- BL
- 18.7T·m
- Vd
- 313cm³
- Qts
- 0.30
- Vas
- 57L
Published graphs
B&C 12FL76 is a 12-inch 8 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 50 Hz, Qts 0.30, Vas 57 L, Xmax 6 mm, sensitivity 95.5 dB, plus 313 cm³ Vd and 156 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
- 50Hz
- Qts
- 0.30
- Qes
- 0.32
- Qms
- 5.8
- Vas
- 57L
- Re
- 5.4Ω
- Le
- 1mH
Motor and cone
- BL
- 18.7T·m
- Sd
- 522cm²
- Mms
- 64g
- Xmax
- 6mm
- Vd †
- 313cm³
- Voice coil
- 76mm
- Flux density
- 1.10T
Power and response
- Sensitivity †
- 95.5dB
- Manufacturer sensitivity
- 97.5dB
- Power
- 400W
- Nominal power
- 400W
- Impedance
- 8Ω
- Min. impedance
- 6.5Ω
- Range
- 50–4000Hz
- EBP †
- 156 · Leans vented
Size and mounting
- Diameter
- 315mm
- Cutout
- 282mm
- Bolt circle
- 298mm
- Depth
- 140mm
- Weight
- 6.8kg
Sensitivity shows 95.5 dB, calculated from the T/S values. B&C publishes 97.5 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 18.7T·m
- Fs
- 50Hz
- Le
- 1mH
- Re
- 5.4Ω
- Sd
- 522cm²
- Mms
- 64g
- Qes
- 0.32
- Qms
- 5.8
- Qts
- 0.30
- SPL
- 95.5dB
- Vas
- 57L
- Xmax
- 6mm
- Power
- 400W
- Impedance
- 8Ω
- Flux density
- 1.10T
- Sensitivity
- 97.5dB
- Low limit
- 50Hz
- Nominal power
- 400W
- Calculated sensitivity †
- 95.5dB
- High limit
- 4000Hz
- Manufacturer sensitivity
- 97.5dB
- Min. impedance
- 6.5Ω
- Voice coil
- 76mm
- Weight
- 6.8kg
- Diameter
- 315mm
- Depth
- 140mm
- Cutout
- 282mm
- Bolt circle
- 298mm
- Bl
- 18.7 Tm
- Fs
- 50 Hz
- Le
- 1 mH
- Re
- 5.4 Ω
- Sd
- 522 cm² (80.9 in²)
- Ebp
- 156 Hz
- Mms
- 64 g
- Qes
- 0.32
- Qms
- 5.8
- Qts
- 0.3
- Vas
- 57 dm³ (2 ft³)
- Η0
- 2.4 %
- Cone
- RCK12FL768
- Xmax
- 6 mm
- Xvar
- 7.5 mm
- Depth
- 140 mm (5.5 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 6.85 kg (15.1 lb)
- Pole design
- T-Pole
- Sensitivity
- 97.5 dB
- Flux density
- 1.1 T
- Shipping box
- 360x360x200 mm (14.17x14.17x7.87 in)
- Winding depth
- 17 mm (0.67 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Glass Fibre
- Frequency range
- 50 Hz - 4000 Hz
- Shipping weight
- 7.75 kg (17.09 lb)
- Nominal diameter
- 320 mm (12 in)
- Overall diameter
- 315 mm (12.4 in)
- Winding material
- Aluminium
- Minimum impedance
- 6.5 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 11 mm (0.4 in)
- Recommended tuning
- 55 Hz
- Voice coil diameter
- 76 mm (3 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
- 282 mm (11.1 in)
- Nominal power handling
- 400 W
- Continuous power handling
- 800 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 12FL76 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 12FL76. Clear differences are green when better and red when worse.
This driver12FL76
Best price
–
Fs
50 Hz
Qts
0.30
Vas
57 L
BL
18.7 T·m
Xmax
6 mm
Sensitivity
95.5 dB
Power
400 W
B&C12CL64
£79.00Fs52 Hz +4%
Qts0.30 –
Vas64 L +12%, worse
BL17.5 T·m −6%
Xmax4.5 mm −25%, worse
Sensitivity96.5 dB +1
CelestionFTR12-3070C
£134.67Fs65 Hz +30%, worse
Qts0.32 +7%
Vas43.7 L −23%, better
BL18.6 T·m –
Xmax5.5 mm −8%
Sensitivity97.3 dB +1.8
B&C12FW64
£136.93Fs55 Hz +10%, worse
Qts0.29 −3%
Vas64 L +12%, worse
BL15.5 T·m −17%, worse
Xmax5 mm −17%, worse
Sensitivity97.3 dB +1.8
RCFMB12G301
£142.33Fs53 Hz +6%
Qts0.27 −10%
Vas72 L +26%, worse
BL17 T·m −9%
Xmax6 mm –
Sensitivity97.9 dB +2.4, better
PRV Audio12MR2000
£143.79Fs57 Hz +14%, worse
Qts0.33 +10%, worse
Vas52.5 L −8%
BL21.3 T·m +14%, better
Xmax6.6 mm +10%, better
Sensitivity96.6 dB +1.1
Beyma12G40
£154.94Fs44 Hz −12%, better
Qts0.30 –
Vas81 L +42%, worse
BL18.4 T·m –
Xmax7 mm +17%, better
Sensitivity95.6 dB –
Eighteen Sound12LW800
£189.95Fs52 Hz +4%
Qts0.29 −3%
Vas48 L −16%, better
BL21.3 T·m +14%, better
Xmax6.5 mm +8%
Sensitivity95.6 dB –
PRV Audio12MR2000X-NDY
£211.94Fs67 Hz +34%, worse
Qts0.31 +3%
Vas35.9 L −37%, better
BL22.7 T·m +21%, better
Xmax6.1 mm –
Sensitivity97.3 dB +1.8
Eighteen Sound12ND830
£243.08Fs55 Hz +10%, worse
Qts0.28 −7%
Vas72 L +26%, worse
BL17.6 T·m −6%
Xmax6.5 mm +8%
Sensitivity98 dB +2.5, better
Eighteen Sound12LW1400
£260.72Fs45 Hz −10%, better
Qts0.30 –
Vas55 L −4%
BL20 T·m +7%
Xmax8.3 mm +38%, better
Sensitivity94 dB −1.5
Dayton AudioRSS315HO-4
£295.59Fs26 Hz −48%, better
Qts0.31 +3%
Vas53.7 L −6%
BL20 T·m +7%
Xmax12.3 mm +105%, better
Sensitivity86.7 dB −8.8, worse
Eighteen Sound12NCX750
£426.63Fs58 Hz +16%, worse
Qts0.29 −3%
Vas63 L +11%, worse
BL17.5 T·m −6%
Xmax5.5 mm −8%
Sensitivity98 dB +2.5, better
Eighteen Sound12NCX910
£436.54Fs57 Hz +14%, worse
Qts0.30 –
Vas58 L –
BL18.1 T·m −3%
Xmax6.9 mm +15%, better
Sensitivity97.4 dB +1.9
Eighteen Sound12NCX750H
£444.75Fs58 Hz +16%, worse
Qts0.29 −3%
Vas63 L +11%, worse
BL17.5 T·m −6%
Xmax5.5 mm −8%
Sensitivity98 dB +2.5, better
Eighteen Sound12NCX910N
£478.98Fs57 Hz +14%, worse
Qts0.30 –
Vas58 L –
BL18.1 T·m −3%
Xmax6.9 mm +15%, better
Sensitivity97.4 dB +1.9
PRV Audio12MB2000FT-NDY
No current priceFs55 Hz +10%, worse
Qts0.30 –
Vas71.5 L +25%, worse
BL17.7 T·m −5%
Xmax6 mm –
Sensitivity97.9 dB +2.4, better
FaneCOLOSSUS 12MB
No current priceFs55 Hz +10%, worse
Qts0.29 −5%
Vas56 L –
BL18.3 T·m –
Xmax5.5 mm −8%
Sensitivity96.5 dB +1
Eighteen Sound12NCX910BE
No current priceFs57 Hz +14%, worse
Qts0.30 –
Vas58 L –
BL18.1 T·m −3%
Xmax6.9 mm +15%, better
Sensitivity97.4 dB +1.9
PRV Audio12MB2000FT
No current priceFs56 Hz +11%, worse
Qts0.32 +7%
Vas66.9 L +17%, worse
BL17.7 T·m −5%
Xmax6 mm –
Sensitivity97.5 dB +2, better
CIARE12.75W1
No current priceFs49 Hz –
Qts0.33 +10%, worse
Vas67 L +18%, worse
BL18.9 T·m –
Xmax6 mm –
Sensitivity95.7 dB –
Oberton12NCX
No current priceFs58 Hz +16%, worse
Qts0.30 –
Vas62.9 L +10%, worse
BL17.2 T·m −8%
Xmax5.3 mm −13%, worse
Sensitivity98.1 dB +2.6, better
LavoceCAN143.00T
No current priceFs44 Hz −12%, better
Qts0.30 –
Vas122.3 L +115%, worse
BL18.8 T·m –
Xmax6 mm –
Sensitivity97.3 dB +1.8
CelestionTSQ1230
No current priceFs55 Hz +10%, worse
Qts0.30 –
Vas45.2 L −21%, better
BL20.5 T·m +10%
Xmax6.8 mm +13%, better
Sensitivity95.8 dB –
CIARECSD124-22
No current priceFs34 Hz −32%, better
Qts0.30 –
Vas54 L −5%
BL18.2 T·m –
Xmax13 mm +117%, better
Sensitivity90.2 dB −5.3, worse
MonacorFTR12-3070C/8
No current priceFs65 Hz +30%, worse
Qts0.32 +7%
Vas43.7 L −23%, better
BL18.6 T·m –
Xmax5.5 mm −8%
Sensitivity97.3 dB +1.8
Oberton12HCX
No current priceFs53 Hz +5%
Qts0.33 +11%, worse
Vas55.5 L –
BL17.8 T·m −5%
Xmax5.3 mm −13%, worse
Sensitivity95.6 dB –
CelestionNTR12-3018D
No current priceFs59 Hz +18%, worse
Qts0.30 –
Vas50.4 L −12%, better
BL19.9 T·m +6%
Xmax4 mm −33%, worse
Sensitivity97 dB +1.5
CelestionCF1230F
No current priceFs57 Hz +13%, worse
Qts0.32 +6%
Vas49.6 L −13%, better
BL18.3 T·m –
Xmax7.5 mm +25%, better
Sensitivity96.2 dB +0.7
P.Audio12NX-76MB
No current priceFs55 Hz +10%, worse
Qts0.31 +3%
Vas50.3 L −12%, better
BL21.4 T·m +14%, better
Xmax4.8 mm −21%, worse
Sensitivity96.3 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.