B&C12CL76
£136.00 · 52% less, betterFs48 Hz +17%, worse
Qts0.21 −13%, better
Vas59 L −23%, better
BL22.4 T·m +5%
Xmax6 mm –
Sensitivity96.8 dB +1.5
12-inch LF driver · 102 mm voice coil · 1,000 W
BMS 12N803 8Ω
8 Ω · 40–1700 Hz
£285.67
SteadyLean Audio · 2 in stock · All 1 offer
- Fs
- 41Hz
- Xmax
- 6mm
- SPL
- 95dB
- Pe
- 1000W
- BL
- 21.4T·m
- Vd
- 319cm³
- Qts
- 0.24
- Vas
- 77L
BMS 12N803 is a 12-inch 8 ohm LF driver rated at 1000 W RMS. The validated T/S data includes Fs 41 Hz, Qts 0.24, Vas 77 L, Xmax 6 mm, sensitivity 95.3 dB, plus 319 cm³ Vd and 164 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 £285.67.
The published T/S values agree with each other
Thiele/Small
- Fs
- 41Hz
- Qts
- 0.24
- Qes
- 0.25
- Qms
- 5.2
- Vas
- 77L
- Re
- 5.7Ω
- Le
- 0.61mH
Motor and cone
- BL
- 21.4T·m
- Sd
- 531cm²
- Mms
- 78g
- Xmax
- 6mm
- Vd †
- 319cm³
- Voice coil
- 102mm
Power and response
- Sensitivity †
- 95.3dB
- Manufacturer sensitivity
- 97dB
- Power
- 1000W
- Impedance
- 8Ω
- Range
- 40–1700Hz
- EBP †
- 164 · Leans vented
Size and mounting
- Diameter
- 318mm
- Cutout
- 283mm
- Bolt circle
- 300mm
- Depth
- 147mm
- Weight
- 4.7kg
Other published values
- Cms
- 0.19mm/N
Sensitivity shows 95.3 dB, calculated from the T/S values. BMS publishes 97.0 dB, 1.7 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else BMS lists
LF
- BL
- 21.4T·m
- Fs
- 41Hz
- Le
- 0.61mH
- Re
- 5.7Ω
- Sd
- 531cm²
- Cms
- 0.19mm/N
- Mms
- 78g
- Qes
- 0.25
- Qms
- 5.2
- Qts
- 0.24
- SPL
- 95.3dB
- Vas
- 77L
- Xmax
- 6mm
- Power
- 1000W
- Impedance
- 8Ω
- Sensitivity
- 97dB
- Low limit
- 40Hz
- Calculated sensitivity †
- 95.3dB
- High limit
- 1700Hz
- Manufacturer sensitivity
- 97dB
- Voice coil
- 102mm
- 10. basket
- Cast Aluminum
- 20. bl factor
- BL 21.35 Tesla m
- 1. application
- Low-Middle
- 18. moving mass
- Mms 0.078 kg
- 13. dc resistance
- Re 5.70 Ohm
- 9. magnet gap depth
- 10 mm
- 17. equivalent volume
- Vas 77 L
- 2. nominal impendance
- 8 Ohm
- 5. frequency response
- 40 – 1700 Hz
- 6. voice coil diameter
- 101.6 (4″) mm
- 7. voice coil material
- Cu
- 12. resonance frequency
- Fs 41 Hz
- 14. mechanical q factor
- Qms 5.2
- 15. electrical q factor
- Qes 0.25
- 16. total quality factor
- Qts 0.24
- 19. mechanical complience
- Cms 0.193 mm / N
- 21. effective piston area
- Sd 0.0531 m²
- 22. max. linear excursion
- Xmax +/- 6 mm
- 23. voice coil inductance
- Le1k 0.61 mH
- 4. sensitivity (1 w / 1 m)
- 97 dB
- 3. power handling aes noise
- 1000 W
- 8. voice coil winding depth
- 22 mm
- 11. effect. diaphragm diameter d
- 260 mm
02
Compare
Same-size drivers, compared with the 12N803. Clear differences are green when better and red when worse.
This driver12N803
Best price
£285.67
Fs
41 Hz
Qts
0.24
Vas
77 L
BL
21.4 T·m
Xmax
6 mm
Sensitivity
95.3 dB
Power
1000 W
RCFMB12G301
£142.33 · 50% less, betterFs53 Hz +29%, worse
Qts0.27 +13%, worse
Vas72 L −6%
BL17 T·m −20%, worse
Xmax6 mm –
Sensitivity97.9 dB +2.6, better
B&C12PLB76
£149.88 · 48% less, betterFs50 Hz +22%, worse
Qts0.23 −4%
Vas75 L –
BL18.6 T·m −13%, worse
Xmax5 mm −17%, worse
Sensitivity97.9 dB +2.6, better
B&C12CLA76
£153.54 · 46% less, betterFs52 Hz +27%, worse
Qts0.25 +4%
Vas56 L −27%, better
BL20.2 T·m −5%
Xmax5.3 mm −12%, worse
Sensitivity96.8 dB +1.5
FaitalPRO12FH510
£163.54 · 43% less, betterFs45 Hz +10%
Qts0.24 –
Vas81.3 L +6%
BL18.9 T·m −11%, worse
Xmax7.5 mm +25%, better
Sensitivity96.7 dB +1.4
Precision DevicesPD.121/2
£168.00 · 41% less, betterFs53 Hz +30%, worse
Qts0.23 −4%
Vas66.6 L −14%, better
BL21.5 T·m –
Xmax2.7 mm −55%, worse
Sensitivity98.4 dB +3.1, better
RCFMB12N301
£183.23 · 36% less, betterFs54 Hz +32%, worse
Qts0.24 –
Vas71 L −8%
BL19 T·m −11%, worse
Xmax6 mm –
Sensitivity98.4 dB +3.1, better
BMS12S330
£204.98 · 28% less, betterFs29 Hz −30%, better
Qts0.24 –
Vas85.5 L +11%, worse
BL23 T·m +8%
Xmax8 mm +33%, better
Sensitivity91.1 dB −4.2, worse
Beyma12MC700ND
£209.29 · 27% less, betterFs51 Hz +24%, worse
Qts0.24 –
Vas58 L −25%, better
BL21.6 T·m –
Xmax7 mm +17%, better
Sensitivity96.7 dB +1.4
RCFMB12N351
£225.00 · 21% less, betterFs55 Hz +34%, worse
Qts0.20 −17%, better
Vas61 L −21%, better
BL22.5 T·m +5%
Xmax6 mm –
Sensitivity98.9 dB +3.6, better
BMS12C262
£228.36 · 20% less, betterFs47 Hz +15%, worse
Qts0.24 –
Vas60.6 L −21%, better
BL20.6 T·m −4%
Xmax2.5 mm −58%, worse
Sensitivity96.1 dB +0.8
Eighteen Sound12ND730
£230.40 · 19% less, betterFs45 Hz +10%
Qts0.23 −4%
Vas90 L +17%, worse
BL19.2 T·m −10%, worse
Xmax6.5 mm +8%
Sensitivity97.4 dB +2.1, better
BMS12N620
£247.26 · 13% less, betterFs45 Hz +9%
Qts0.25 +4%
Vas72.7 L −6%
BL20.6 T·m −4%
Xmax5.5 mm −8%
Sensitivity96 dB +0.7
Eighteen Sound12ND930
£248.59 · 13% less, betterFs50 Hz +22%, worse
Qts0.21 −13%, better
Vas70 L −9%
BL21.2 T·m –
Xmax6.5 mm +8%
Sensitivity98 dB +2.7, better
BMS12N802
£271.01 · 5% less, betterFs43 Hz +5%
Qts0.24 –
Vas65 L −16%, better
BL22.3 T·m +4%
Xmax4.5 mm −25%, worse
Sensitivity95.2 dB –
Beyma12CXA400ND
£349.99 · 23% more, worseFs45 Hz +10%
Qts0.25 +4%
Vas88.5 L +15%, worse
BL21.4 T·m –
Xmax6 mm –
Sensitivity96.9 dB +1.6
BMS12CN680
£365.51 · 28% more, worseFs46 Hz +12%, worse
Qts0.26 +8%
Vas58 L −25%, better
BL20.6 T·m −4%
Xmax5.5 mm −8%
Sensitivity95.2 dB –
LavoceCAN123.00T
£401.07 · 40% more, worseFs46 Hz +12%, worse
Qts0.22 −8%
Vas91 L +18%, worse
BL18.5 T·m −13%, worse
Xmax6 mm –
Sensitivity97.9 dB +2.6, better
Beyma12CXA400FE
No current priceFs42 Hz –
Qts0.25 +4%
Vas94 L +22%, worse
BL19.8 T·m −7%
Xmax6 mm –
Sensitivity96.3 dB +1
Oberton12B401
No current priceFs47 Hz +14%, worse
Qts0.24 –
Vas69.6 L −10%
BL19.9 T·m −7%
Xmax6.8 mm +13%, better
Sensitivity96.5 dB +1.2
No photo
PHL Audio4071-1
No current priceFs47 Hz +15%, worse
Qts0.24 –
Vas57.8 L −25%, better
BL20.6 T·m −4%
Xmax6.5 mm +8%
Sensitivity95.7 dB –
Oberton12B400
No current priceFs50 Hz +23%, worse
Qts0.25 +4%
Vas74.7 L –
BL18.4 T·m −14%, worse
Xmax5.3 mm −13%, worse
Sensitivity97.8 dB +2.5, better
Eighteen Sound12MB650
No current priceFs48 Hz +17%, worse
Qts0.23 −4%
Vas90 L +17%, worse
BL19 T·m −11%, worse
Xmax5.5 mm −8%
Sensitivity98.2 dB +2.9, better
RCFLF12P903
No current priceFs47 Hz +15%, worse
Qts0.23 −4%
Vas65 L −16%, better
BL22.1 T·m +4%
Xmax7 mm +17%, better
Sensitivity96.5 dB +1.2
LavoceCAN123.00TH
No current priceFs46 Hz +12%, worse
Qts0.22 −8%
Vas91 L +18%, worse
BL18.5 T·m −13%, worse
Xmax6 mm –
Sensitivity97.9 dB +2.6, better
LavoceNBASS12-30
No current priceFs46 Hz +12%, worse
Qts0.26 +8%
Vas68.6 L −11%, better
BL19.5 T·m −9%
Xmax6.6 mm +10%
Sensitivity96 dB +0.7
Oberton12H4CX72
No current priceFs50 Hz +22%, worse
Qts0.25 +5%
Vas74.7 L –
BL19.9 T·m −7%
Xmax4.5 mm −25%, worse
Sensitivity97.6 dB +2.3, better
Precision DevicesPD.124NR1-LR
No current priceFs45 Hz +10%
Qts0.23 −6%
Vas78 L –
BL22 T·m +3%
Xmax8.5 mm +42%, better
Sensitivity96.9 dB +1.6
Oberton12B450
No current priceFs46 Hz +13%, worse
Qts0.23 –
Vas71.8 L −7%
BL19.3 T·m −10%
Xmax7.8 mm +29%, better
Sensitivity96.7 dB +1.4
Oberton12NXL400
No current priceFs49 Hz +19%, worse
Qts0.20 −15%, better
Vas79.2 L –
BL20.6 T·m −4%
Xmax5.3 mm −13%, worse
Sensitivity98.5 dB +3.2, better
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 |
|---|---|---|---|---|
Lean Audio | £285.67, the lowest price | 2 in stock | Visit shop at Lean Audio |
Best price over time
Tracked since 1 Apr