Beyma12WRS400
£122.29Fs42 Hz +8%
Qts0.29 –
Vas91 L +28%, worse
BL17.4 T·m −15%, worse
Xmax6.3 mm −21%, worse
Sensitivity95.4 dB +2, better
12-inch LF driver · 102 mm voice coil · 1,100 W
BMS 12N804 8Ω
8 Ω · 40–1700 Hz
No price for delivery to the UK
- Fs
- 39Hz
- Xmax
- 8mm
- SPL
- 93dB
- Pe
- 1100W
- BL
- 20.4T·m
- Vd
- 425cm³
- Qts
- 0.29
- Vas
- 71L
BMS 12N804 is a 12-inch 8 ohm LF driver rated at 1100 W RMS. The validated T/S data includes Fs 39 Hz, Qts 0.29, Vas 71 L, Xmax 8 mm, sensitivity 93.4 dB, plus 425 cm³ Vd and 126 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
- 39Hz
- Qts
- 0.29
- Qes
- 0.31
- Qms
- 4.6
- Vas
- 71L
- Re
- 5.7Ω
- Le
- 0.66mH
Motor and cone
- BL
- 20.4T·m
- Sd
- 531cm²
- Mms
- 92g
- Xmax
- 8mm
- Vd †
- 425cm³
- Voice coil
- 102mm
Power and response
- Sensitivity †
- 93.4dB
- Manufacturer sensitivity
- 95dB
- Power
- 1100W
- Impedance
- 8Ω
- Range
- 40–1700Hz
- EBP †
- 126 · Leans vented
Size and mounting
- Diameter
- 318mm
- Cutout
- 283mm
- Bolt circle
- 300mm
- Depth
- 151mm
- Weight
- 5.1kg
Other published values
- Cms
- 0.18mm/N
Sensitivity shows 93.4 dB, calculated from the T/S values. BMS publishes 95.0 dB, 1.6 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else BMS lists
LF
- BL
- 20.4T·m
- Fs
- 39Hz
- Le
- 0.66mH
- Re
- 5.7Ω
- Sd
- 531cm²
- Cms
- 0.18mm/N
- Mms
- 92g
- Qes
- 0.31
- Qms
- 4.6
- Qts
- 0.29
- SPL
- 93.4dB
- Vas
- 71L
- Xmax
- 8mm
- Power
- 1100W
- Impedance
- 8Ω
- Sensitivity
- 95dB
- Low limit
- 40Hz
- Calculated sensitivity †
- 93.4dB
- High limit
- 1700Hz
- Manufacturer sensitivity
- 95dB
- Voice coil
- 102mm
- 10. basket
- Cast Aluminum
- 20. bl factor
- BL 20.4 Tesla m
- 1. application
- Subwoofer
- 18. moving mass
- Mms 0.092 kg
- 13. dc resistance
- Re 5.7 Ohm
- 9. magnet gap depth
- 10 mm
- 17. equivalent volume
- Vas 71 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 39 Hz
- 14. mechanical q factor
- Qms 4.6
- 15. electrical q factor
- Qes 0.31
- 16. total quality factor
- Qts 0.29
- 19. mechanical complience
- Cms 0.18 mm / N
- 21. effective piston area
- Sd 0.0531 m²
- 22. max. linear excursion
- Xmax +/- 8 mm
- 23. voice coil inductance
- Le1k 0.66 mH
- 4. sensitivity (1 w / 1 m)
- 95 dB
- 3. power handling aes noise
- 1100 W
- 8. voice coil winding depth
- 26 mm
- 11. effect. diaphragm diameter d
- 260 mm
02
Compare
Same-size drivers, compared with the 12N804. Clear differences are green when better and red when worse.
This driver12N804
Best price
–
Fs
39 Hz
Qts
0.29
Vas
71 L
BL
20.4 T·m
Xmax
8 mm
Sensitivity
93.4 dB
Power
1100 W
Beyma12G40
£153.72Fs44 Hz +13%, worse
Qts0.30 +3%
Vas81 L +14%, worse
BL18.4 T·m −10%
Xmax7 mm −13%, worse
Sensitivity95.6 dB +2.2, better
LavoceWAN123.00
£163.28Fs49 Hz +26%, worse
Qts0.27 −7%
Vas68.8 L −3%
BL17.9 T·m −12%, worse
Xmax6.9 mm −14%, worse
Sensitivity96.6 dB +3.2, better
B&C12FW88
£163.69Fs53 Hz +36%, worse
Qts0.33 +14%, worse
Vas45.7 L −36%, better
BL19.5 T·m −4%
Xmax8 mm –
Sensitivity94.9 dB +1.5
Eighteen Sound12W750
£166.62Fs49 Hz +26%, worse
Qts0.28 −3%
Vas73 L –
BL18 T·m −12%, worse
Xmax8 mm –
Sensitivity96.6 dB +3.2, better
Beyma12MCB700
£174.16Fs51 Hz +31%, worse
Qts0.27 −7%
Vas59.5 L −16%, better
BL20.4 T·m –
Xmax7 mm −13%, worse
Sensitivity96.4 dB +3, better
FaitalPRO12FH530
£175.00Fs45 Hz +15%, worse
Qts0.26 −10%, better
Vas74.1 L +4%
BL18.9 T·m −7%
Xmax7.5 mm −6%
Sensitivity96 dB +2.6, better
Eighteen Sound12LW800
£189.95Fs52 Hz +33%, worse
Qts0.29 –
Vas48 L −32%, better
BL21.3 T·m +4%
Xmax6.5 mm −19%, worse
Sensitivity95.6 dB +2.2, better
B&C12PS100
£193.00Fs44 Hz +13%, worse
Qts0.27 −7%
Vas47 L −34%, better
BL22.5 T·m +10%, better
Xmax8 mm –
Sensitivity93.4 dB –
FaitalPRO12FH520
£197.29Fs50 Hz +28%, worse
Qts0.29 –
Vas73.7 L +4%
BL17.3 T·m −15%, worse
Xmax7.3 mm −9%
Sensitivity96.9 dB +3.5, better
B&C12NDL88
£208.49Fs51 Hz +31%, worse
Qts0.27 −7%
Vas52 L −27%, better
BL19.9 T·m –
Xmax8 mm –
Sensitivity95.8 dB +2.4, better
Eighteen Sound12ND830
£240.31Fs55 Hz +41%, worse
Qts0.28 −3%
Vas72 L –
BL17.6 T·m −14%, worse
Xmax6.5 mm −19%, worse
Sensitivity98 dB +4.6, better
Eighteen Sound12LW1400
£260.72Fs45 Hz +15%, worse
Qts0.30 +3%
Vas55 L −23%, better
BL20 T·m –
Xmax8.3 mm +3%
Sensitivity94 dB +0.6
BMS12N630
£283.85Fs29 Hz −27%, better
Qts0.33 +14%, worse
Vas85.5 L +20%, worse
BL19.8 T·m –
Xmax8 mm –
Sensitivity89.6 dB −3.8, worse
Eighteen Sound12NCX750
£426.63Fs58 Hz +49%, worse
Qts0.29 –
Vas63 L −11%, better
BL17.5 T·m −14%, worse
Xmax5.5 mm −31%, worse
Sensitivity98 dB +4.6, better
Eighteen Sound12NCX910
£436.54Fs57 Hz +46%, worse
Qts0.30 +3%
Vas58 L −18%, better
BL18.1 T·m −11%, worse
Xmax6.9 mm −14%, worse
Sensitivity97.4 dB +4, better
Eighteen Sound12NCX750H
£444.75Fs58 Hz +49%, worse
Qts0.29 –
Vas63 L −11%, better
BL17.5 T·m −14%, worse
Xmax5.5 mm −31%, worse
Sensitivity98 dB +4.6, better
Eighteen Sound12NCX910N
£478.98Fs57 Hz +46%, worse
Qts0.30 +3%
Vas58 L −18%, better
BL18.1 T·m −11%, worse
Xmax6.9 mm −14%, worse
Sensitivity97.4 dB +4, better
No photo
PHL Audio4031
No current priceFs44 Hz +13%, worse
Qts0.27 −7%
Vas70 L –
BL20.5 T·m –
Xmax7.5 mm −6%
Sensitivity95.2 dB +1.8
No photo
PHL Audio4031NDU
No current priceFs44 Hz +13%, worse
Qts0.27 −7%
Vas70 L –
BL20.5 T·m –
Xmax7.5 mm −6%
Sensitivity95.2 dB +1.8
Eighteen Sound12NCX910BE
No current priceFs57 Hz +46%, worse
Qts0.30 +3%
Vas58 L −18%, better
BL18.1 T·m −11%, worse
Xmax6.9 mm −14%, worse
Sensitivity97.4 dB +4, better
Eighteen Sound12W600
No current priceFs50 Hz +28%, worse
Qts0.30 +3%
Vas73 L –
BL17.3 T·m −15%, worse
Xmax6.5 mm −19%, worse
Sensitivity96.6 dB +3.2, better
PRV Audio12MB2000FT-NDY
No current priceFs55 Hz +41%, worse
Qts0.30 +3%
Vas71.5 L –
BL17.7 T·m −13%, worse
Xmax6 mm −25%, worse
Sensitivity97.9 dB +4.5, better
CelestionTSQ1230
No current priceFs55 Hz +41%, worse
Qts0.30 +4%
Vas45.2 L −36%, better
BL20.5 T·m –
Xmax6.8 mm −16%, worse
Sensitivity95.8 dB +2.4, better
SB AcousticsWO34HC-8
No current priceFs20 Hz −48%, better
Qts0.29 –
Vas238 L +235%, worse
BL19 T·m −7%
Xmax8.3 mm +4%
Sensitivity90.2 dB −3.2, worse
No photo
PHL Audio4021
No current priceFs35 Hz −10%, better
Qts0.35 +21%, worse
Vas70 L –
BL20.5 T·m –
Xmax7.5 mm −6%
Sensitivity91.2 dB −2.2, worse
LavoceNBASS12-30
No current priceFs46 Hz +18%, worse
Qts0.26 −10%, better
Vas68.6 L −3%
BL19.5 T·m −4%
Xmax6.6 mm −18%, worse
Sensitivity96 dB +2.6, better
Eighteen Sound12LW801
No current priceFs54 Hz +38%, worse
Qts0.33 +14%, worse
Vas41 L −42%, better
BL20.3 T·m –
Xmax8 mm –
Sensitivity94.8 dB +1.4
Eighteen Sound12NTLX3500
No current priceFs39 Hz –
Qts0.33 +14%, worse
Vas79.6 L +12%, worse
BL17.1 T·m −16%, worse
Xmax7.9 mm –
Sensitivity93.3 dB –
Oberton12B450
No current priceFs46 Hz +19%, worse
Qts0.23 −19%, better
Vas71.8 L –
BL19.3 T·m −5%
Xmax7.8 mm −3%
Sensitivity96.7 dB +3.3, 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 | £352.13 | Back order | Visit shop at Lean Audio |