RCFMB12G301
£142.33 · 42% less, betterFs53 Hz +19%, worse
Qts0.27 +8%
Vas72 L –
BL17 T·m −17%, worse
Xmax6 mm +9%
Sensitivity97.9 dB +1.9
12-inch LF driver · 77 mm voice coil · 500 W
BMS 12N620 8Ω
8 Ω · 45–2500 Hz
£247.26
SteadyLean Audio · 2 in stock · All 2 offers
- Fs
- 45Hz
- Xmax
- 5.5mm
- SPL
- 96dB
- Pe
- 500W
- BL
- 20.6T·m
- Vd
- 292cm³
- Qts
- 0.25
- Vas
- 73L
BMS 12N620 is a 12-inch 8 ohm LF driver rated at 500 W RMS. The validated T/S data includes Fs 45 Hz, Qts 0.25, Vas 72.7 L, Xmax 5.5 mm, sensitivity 96 dB, plus 292 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 £247.26.
The published T/S values agree with each other
Thiele/Small
- Fs
- 45Hz
- Qts
- 0.25
- Qes
- 0.26
- Qms
- 5.1
- Vas
- 72.7L
- Re
- 5.7Ω
- Le
- 0.60mH
Motor and cone
- BL
- 20.6T·m
- Sd
- 531cm²
- Mms
- 68g
- Xmax
- 5.5mm
- Vd †
- 292cm³
- Voice coil
- 77mm
Power and response
- Sensitivity †
- 96dB
- Manufacturer sensitivity
- 98dB
- Power
- 500W
- Impedance
- 8Ω
- Range
- 45–2500Hz
- EBP †
- 172 · Leans vented
Size and mounting
- Diameter
- 318mm
- Cutout
- 284mm
- Bolt circle
- 300mm
- Depth
- 145mm
- Weight
- 3.5kg
Other published values
- Cms
- 0.18mm/N
Sensitivity shows 96.0 dB, calculated from the T/S values. BMS publishes 98.0 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else BMS lists
LF
- BL
- 20.6T·m
- Fs
- 45Hz
- Le
- 0.60mH
- Re
- 5.7Ω
- Sd
- 531cm²
- Cms
- 0.18mm/N
- Mms
- 68g
- Qes
- 0.26
- Qms
- 5.1
- Qts
- 0.25
- SPL
- 96dB
- Vas
- 72.7L
- Xmax
- 5.5mm
- Power
- 500W
- Impedance
- 8Ω
- Sensitivity
- 98dB
- Low limit
- 45Hz
- Calculated sensitivity †
- 96dB
- High limit
- 2500Hz
- Manufacturer sensitivity
- 98dB
- Voice coil
- 77mm
- 10. basket
- Cast Aluminum
- 20. bl factor
- BL 20.6 Tesla m
- 1. application
- Low-Middle
- 18. moving mass
- Mms 0.068 kg
- 13. dc resistance
- Re 5.7 Ohm
- 9. magnet gap depth
- 8 mm
- 17. equivalent volume
- Vas 72.7 L
- 2. nominal impendance
- 8 Ohm
- 5. frequency response
- 45 – 2500 Hz
- 6. voice coil diameter
- 77 (3″) mm
- 7. voice coil material
- Cu
- 12. resonance frequency
- Fs 44.7 Hz
- 14. mechanical q factor
- Qms 5.1
- 15. electrical q factor
- Qes 0.26
- 16. total quality factor
- Qts 0.25
- 19. mechanical complience
- Cms 0.18 mm / N
- 21. effective piston area
- Sd 0.0531 m²
- 22. max. linear excursion
- Xmax +/- 5.5 mm
- 23. voice coil inductance
- Le1k 0.6 mH
- 4. sensitivity (1 w / 1 m)
- 98 dB
- 3. power handling aes noise
- 500 W
- 8. voice coil winding depth
- 19 mm
- 11. effect. diaphragm diameter d
- 260 mm
02
Compare
Same-size drivers, compared with the 12N620. Clear differences are green when better and red when worse.
This driver12N620
Best price
£247.26
Fs
45 Hz
Qts
0.25
Vas
72.7 L
BL
20.6 T·m
Xmax
5.5 mm
Sensitivity
96 dB
Power
500 W
B&C12PLB76
£149.88 · 39% less, betterFs50 Hz +12%, worse
Qts0.23 −8%
Vas75 L +3%
BL18.6 T·m −10%
Xmax5 mm −9%
Sensitivity97.9 dB +1.9
B&C12CLA76
£153.54 · 38% less, betterFs52 Hz +16%, worse
Qts0.25 –
Vas56 L −23%, better
BL20.2 T·m –
Xmax5.3 mm −4%
Sensitivity96.8 dB +0.8
FaitalPRO12FH510
£163.54 · 34% less, betterFs45 Hz –
Qts0.24 −4%
Vas81.3 L +12%, worse
BL18.9 T·m −8%
Xmax7.5 mm +36%, better
Sensitivity96.7 dB +0.7
FaitalPRO12FH530
£175.00 · 29% less, betterFs45 Hz –
Qts0.26 +4%
Vas74.1 L –
BL18.9 T·m −8%
Xmax7.5 mm +36%, better
Sensitivity96 dB –
FaitalPRO12FH500
£180.28 · 27% less, betterFs45 Hz –
Qts0.25 –
Vas87.3 L +20%, worse
BL17.5 T·m −15%, worse
Xmax7.5 mm +36%, better
Sensitivity96.9 dB +0.9
RCFMB12N301
£183.23 · 26% less, betterFs54 Hz +21%, worse
Qts0.24 −4%
Vas71 L –
BL19 T·m −8%
Xmax6 mm +9%
Sensitivity98.4 dB +2.4, better
Beyma12MC700ND
£209.29 · 15% less, betterFs51 Hz +14%, worse
Qts0.24 −4%
Vas58 L −20%, better
BL21.6 T·m +5%
Xmax7 mm +27%, better
Sensitivity96.7 dB +0.7
BMS12S305
£213.05 · 14% less, betterFs35 Hz −22%, better
Qts0.27 +6%
Vas82 L +13%, worse
BL20.1 T·m –
Xmax11 mm +100%, better
Sensitivity93 dB −3, worse
BMS12C262
£228.36 · 8% less, betterFs47 Hz +6%
Qts0.24 −4%
Vas60.6 L −17%, better
BL20.6 T·m –
Xmax2.5 mm −55%, worse
Sensitivity96.1 dB –
Eighteen Sound12ND730
£230.40 · 7% less, betterFs45 Hz –
Qts0.23 −8%
Vas90 L +24%, worse
BL19.2 T·m −7%
Xmax6.5 mm +18%, better
Sensitivity97.4 dB +1.4
BMS12N802
£271.01 · 10% more, worseFs43 Hz −4%
Qts0.24 −4%
Vas65 L −11%, better
BL22.3 T·m +8%
Xmax4.5 mm −18%, worse
Sensitivity95.2 dB −0.8
BMS12N803
£285.67 · 16% more, worseFs41 Hz −8%
Qts0.24 −4%
Vas77 L +6%
BL21.4 T·m +4%
Xmax6 mm +9%
Sensitivity95.3 dB −0.7
Sica12 S 4 PL
£334.09 · 35% more, worseFs40 Hz −10%
Qts0.25 –
Vas57 L −22%, better
BL23.5 T·m +14%, better
Xmax7.5 mm +36%, better
Sensitivity93.6 dB −2.4, worse
Beyma12CXA400ND
£349.99 · 42% more, worseFs45 Hz –
Qts0.25 –
Vas88.5 L +22%, worse
BL21.4 T·m +4%
Xmax6 mm +9%
Sensitivity96.9 dB +0.9
BMS12CN680
£365.51 · 48% more, worseFs46 Hz –
Qts0.26 +4%
Vas58 L −20%, better
BL20.6 T·m –
Xmax5.5 mm –
Sensitivity95.2 dB −0.8
Oberton12B400
No current priceFs50 Hz +13%, worse
Qts0.25 –
Vas74.7 L –
BL18.4 T·m −11%, worse
Xmax5.3 mm −5%
Sensitivity97.8 dB +1.8
Oberton12H4CX72
No current priceFs50 Hz +12%, worse
Qts0.25 –
Vas74.7 L –
BL19.9 T·m −3%
Xmax4.5 mm −18%, worse
Sensitivity97.6 dB +1.6
Beyma12CXA400FE
No current priceFs42 Hz −6%
Qts0.25 –
Vas94 L +29%, worse
BL19.8 T·m −4%
Xmax6 mm +9%
Sensitivity96.3 dB –
Oberton12B401
No current priceFs47 Hz +4%
Qts0.24 –
Vas69.6 L −4%
BL19.9 T·m −3%
Xmax6.8 mm +23%, better
Sensitivity96.5 dB +0.5
No photo
PHL Audio4071-1
No current priceFs47 Hz +5%
Qts0.24 −4%
Vas57.8 L −20%, better
BL20.6 T·m –
Xmax6.5 mm +18%, better
Sensitivity95.7 dB –
Eighteen Sound12MB650
No current priceFs48 Hz +7%
Qts0.23 −8%
Vas90 L +24%, worse
BL19 T·m −8%
Xmax5.5 mm –
Sensitivity98.2 dB +2.2, better
LavoceNBASS12-30
No current priceFs46 Hz –
Qts0.26 +4%
Vas68.6 L −6%
BL19.5 T·m −5%
Xmax6.6 mm +20%, better
Sensitivity96 dB –
Oberton12NXL400
No current priceFs49 Hz +9%
Qts0.20 −19%, better
Vas79.2 L +9%
BL20.6 T·m –
Xmax5.3 mm −5%
Sensitivity98.5 dB +2.5, better
BMS12S302
No current priceFs45 Hz –
Qts0.25 –
Vas65 L −11%, better
BL15.7 T·m −24%, worse
Xmax4.5 mm −18%, worse
Sensitivity95.5 dB −0.5
Oberton12B450
No current priceFs46 Hz +4%
Qts0.23 −6%
Vas71.8 L –
BL19.3 T·m −6%
Xmax7.8 mm +41%, better
Sensitivity96.7 dB +0.7
Oberton12MB35
No current priceFs51 Hz +15%, worse
Qts0.27 +7%
Vas50.1 L −31%, better
BL20.5 T·m –
Xmax6.8 mm +23%, better
Sensitivity96 dB –
No photo
PHL Audio4031
No current priceFs44 Hz –
Qts0.27 +8%
Vas70 L −4%
BL20.5 T·m –
Xmax7.5 mm +36%, better
Sensitivity95.2 dB −0.8
No photo
PHL Audio4031NDU
No current priceFs44 Hz –
Qts0.27 +8%
Vas70 L −4%
BL20.5 T·m –
Xmax7.5 mm +36%, better
Sensitivity95.2 dB −0.8
Oberton12L300
No current priceFs54 Hz +20%, worse
Qts0.25 –
Vas79.6 L +10%
BL16.8 T·m −19%, worse
Xmax3.3 mm −41%, worse
Sensitivity98.8 dB +2.8, 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 | £247.26, the lowest price | 2 in stock | Visit shop at Lean Audio |
Best price over time
Tracked since 1 Apr