SB AudienceROSSO-12MW300
£106.55 · 50% less, betterFs48 Hz +37%, worse
Qts0.27 –
Vas85.9 L +5%
BL17.4 T·m −14%, worse
Xmax6.7 mm −39%, worse
Sensitivity97.3 dB +4.3, better
12-inch LF driver · 77 mm voice coil · 800 W
BMS 12S305 8Ω
8 Ω · 35–2500 Hz
£213.05
SteadyLean Audio · In stock · All 1 offer
- Fs
- 35Hz
- Xmax
- 11mm
- SPL
- 93dB
- Pe
- 800W
- BL
- 20.1T·m
- Vd
- 567cm³
- Qts
- 0.27
- Vas
- 82L
BMS 12S305 is a 12-inch 8 ohm LF driver rated at 800 W RMS. The validated T/S data includes Fs 35 Hz, Qts 0.27, Vas 82 L, Xmax 11 mm, sensitivity 93 dB, plus 567 cm³ Vd and 126 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 £213.05.
The published T/S values agree with each other
Thiele/Small
- Fs
- 35Hz
- Qts
- 0.27
- Qes
- 0.28
- Qms
- 5.8
- Vas
- 82L
- Re
- 5.4Ω
- Le
- 0.70mH
Motor and cone
- BL
- 20.1T·m
- Sd
- 515cm²
- Mms
- 95g
- Xmax
- 11mm
- Vd †
- 567cm³
- Voice coil
- 77mm
Power and response
- Sensitivity †
- 93dB
- Manufacturer sensitivity
- 95dB
- Power
- 800W
- Impedance
- 8Ω
- Range
- 35–2500Hz
- EBP †
- 126 · Leans vented
Size and mounting
- Diameter
- 318mm
- Cutout
- 284mm
- Bolt circle
- 300mm
- Depth
- 153mm
- Weight
- 8kg
Other published values
- Cms
- 0.22mm/N
Sensitivity shows 93.0 dB, calculated from the T/S values. BMS publishes 95.0 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else BMS lists
LF
- BL
- 20.1T·m
- Fs
- 35Hz
- Le
- 0.70mH
- Re
- 5.4Ω
- Sd
- 515cm²
- Cms
- 0.22mm/N
- Mms
- 95g
- Qes
- 0.28
- Qms
- 5.8
- Qts
- 0.27
- SPL
- 93dB
- Vas
- 82L
- Xmax
- 11mm
- Power
- 800W
- Impedance
- 8Ω
- Sensitivity
- 95dB
- Low limit
- 35Hz
- Calculated sensitivity †
- 93dB
- High limit
- 2500Hz
- Manufacturer sensitivity
- 95dB
- Voice coil
- 77mm
- 9. basket
- Cast Aluminum
- 19. bl factor
- BL 20.14 Tesla m
- 17. moving mass
- Mms 0.095 kg
- 12. dc resistance
- Re 5.4 Ohm
- 8. magnet gap depth
- 10 mm
- 1. nominal impendance
- 8 Ohm
- 16. equivalent volume
- Vas 82 L
- 4. frequency response
- 35 – 2500 Hz
- 5. voice coil diameter
- 77 (3″) mm
- 6. voice coil material
- Cu
- 11. resonance frequency
- Fs 35 Hz
- 13. mechanical q factor
- Qms 5.8
- 14. electrical q factor
- Qes 0.278
- 15. total quality factor
- Qts 0.265
- 18. mechanical complience
- Cms 0.218 mm / N
- 20. effective piston area
- Sd 0.0515 m²
- 21. max. linear excursion
- Xmax +/- 11 mm
- 22. voice coil inductance
- Le1k 0.7 mH
- 3. sensitivity (1 w / 1 m)
- 95 dB
- 2. power handling aes noise
- 800 W
- 7. voice coil winding depth
- 32 mm
- 10. effect. diaphragm diameter d
- 256 mm
02
Compare
Same-size drivers, compared with the 12S305. Clear differences are green when better and red when worse.
This driver12S305
Best price
£213.05
Fs
35 Hz
Qts
0.27
Vas
82 L
BL
20.1 T·m
Xmax
11 mm
Sensitivity
93 dB
Power
800 W
RCFMB12G301
£142.33 · 33% less, betterFs53 Hz +51%, worse
Qts0.27 –
Vas72 L −12%, better
BL17 T·m −16%, worse
Xmax6 mm −45%, worse
Sensitivity97.9 dB +4.9, better
Beyma12WR400
£142.43 · 33% less, betterFs42 Hz +20%, worse
Qts0.27 –
Vas91 L +11%, worse
BL18 T·m −11%, worse
Xmax6.3 mm −43%, worse
Sensitivity95.8 dB +2.8, better
B&C12CLA76
£153.54 · 28% less, betterFs52 Hz +49%, worse
Qts0.25 −6%
Vas56 L −32%, better
BL20.2 T·m –
Xmax5.3 mm −52%, worse
Sensitivity96.8 dB +3.8, better
LavoceWAN123.00
£163.28 · 23% less, betterFs49 Hz +40%, worse
Qts0.27 –
Vas68.8 L −16%, better
BL17.9 T·m −11%, worse
Xmax6.9 mm −37%, worse
Sensitivity96.6 dB +3.6, better
FaitalPRO12FH510
£163.54 · 23% less, betterFs45 Hz +29%, worse
Qts0.24 −9%
Vas81.3 L –
BL18.9 T·m −6%
Xmax7.5 mm −32%, worse
Sensitivity96.7 dB +3.7, better
Eighteen Sound12W750
£166.62 · 22% less, betterFs49 Hz +40%, worse
Qts0.28 +6%
Vas73 L −11%, better
BL18 T·m −11%, worse
Xmax8 mm −27%, worse
Sensitivity96.6 dB +3.6, better
Beyma12MCB700
£174.16 · 18% less, betterFs51 Hz +46%, worse
Qts0.27 –
Vas59.5 L −27%, better
BL20.4 T·m –
Xmax7 mm −36%, worse
Sensitivity96.4 dB +3.4, better
FaitalPRO12FH530
£175.00 · 18% less, betterFs45 Hz +29%, worse
Qts0.26 –
Vas74.1 L −10%
BL18.9 T·m −6%
Xmax7.5 mm −32%, worse
Sensitivity96 dB +3, better
FaitalPRO12FH500
£180.28 · 15% less, betterFs45 Hz +29%, worse
Qts0.25 −6%
Vas87.3 L +6%
BL17.5 T·m −13%, worse
Xmax7.5 mm −32%, worse
Sensitivity96.9 dB +3.9, better
RCFMB12N301
£183.23 · 14% less, betterFs54 Hz +54%, worse
Qts0.24 −9%
Vas71 L −13%, better
BL19 T·m −6%
Xmax6 mm −45%, worse
Sensitivity98.4 dB +5.4, better
B&C12NDL88
£208.49 · 2% lessFs51 Hz +46%, worse
Qts0.27 –
Vas52 L −37%, better
BL19.9 T·m –
Xmax8 mm −27%, worse
Sensitivity95.8 dB +2.8, better
BMS12N620
£247.26 · 16% more, worseFs45 Hz +28%, worse
Qts0.25 −6%
Vas72.7 L −11%, better
BL20.6 T·m –
Xmax5.5 mm −50%, worse
Sensitivity96 dB +3, better
BMS12N803
£285.67 · 34% more, worseFs41 Hz +17%, worse
Qts0.24 −9%
Vas77 L −6%
BL21.4 T·m +6%
Xmax6 mm −45%, worse
Sensitivity95.3 dB +2.3, better
Beyma12CXA400ND
£349.99 · 64% more, worseFs45 Hz +29%, worse
Qts0.25 −6%
Vas88.5 L +8%
BL21.4 T·m +6%
Xmax6 mm −45%, worse
Sensitivity96.9 dB +3.9, better
BMS12CN680
£365.51 · 72% more, worseFs46 Hz +31%, worse
Qts0.26 –
Vas58 L −29%, better
BL20.6 T·m –
Xmax5.5 mm −50%, worse
Sensitivity95.2 dB +2.2, better
B&C12CXN88
£465.46 · 118% more, worseFs50 Hz +43%, worse
Qts0.22 −17%, better
Vas59 L −28%, better
BL20.9 T·m +4%
Xmax10.5 mm −5%
Sensitivity97.1 dB +4.1, better
Eighteen Sound12NLW9410
No current priceFs42 Hz +20%, worse
Qts0.26 –
Vas55 L −33%, better
BL21.7 T·m +8%
Xmax11 mm –
Sensitivity93.8 dB +0.8
No photo
PHL Audio4310NDU
No current priceFs43 Hz +23%, worse
Qts0.27 –
Vas56.7 L −31%, better
BL22 T·m +9%
Xmax10 mm −9%
Sensitivity94.1 dB +1.1
No photo
PHL Audio4031
No current priceFs44 Hz +26%, worse
Qts0.27 –
Vas70 L −15%, better
BL20.5 T·m –
Xmax7.5 mm −32%, worse
Sensitivity95.2 dB +2.2, better
No photo
PHL Audio4031NDU
No current priceFs44 Hz +26%, worse
Qts0.27 –
Vas70 L −15%, better
BL20.5 T·m –
Xmax7.5 mm −32%, worse
Sensitivity95.2 dB +2.2, better
LavoceNBASS12-30
No current priceFs46 Hz +31%, worse
Qts0.26 –
Vas68.6 L −16%, better
BL19.5 T·m −3%
Xmax6.6 mm −40%, worse
Sensitivity96 dB +3, better
Oberton12H4CX72
No current priceFs50 Hz +43%, worse
Qts0.25 −5%
Vas74.7 L −9%
BL19.9 T·m –
Xmax4.5 mm −59%, worse
Sensitivity97.6 dB +4.6, better
Beyma12CXA400FE
No current priceFs42 Hz +20%, worse
Qts0.25 −6%
Vas94 L +15%, worse
BL19.8 T·m –
Xmax6 mm −45%, worse
Sensitivity96.3 dB +3.3, better
Oberton12MB35
No current priceFs51 Hz +47%, worse
Qts0.27 –
Vas50.1 L −39%, better
BL20.5 T·m –
Xmax6.8 mm −39%, worse
Sensitivity96 dB +3, better
Sica12 PFS 4
No current priceFs39 Hz +11%, worse
Qts0.26 –
Vas55.6 L −32%, better
BL23.9 T·m +19%, better
Xmax9 mm −18%, worse
Sensitivity92.9 dB –
Oberton12B401
No current priceFs47 Hz +33%, worse
Qts0.24 −8%
Vas69.6 L −15%, better
BL19.9 T·m –
Xmax6.8 mm −39%, worse
Sensitivity96.5 dB +3.5, better
Oberton12B400
No current priceFs50 Hz +44%, worse
Qts0.25 −6%
Vas74.7 L −9%
BL18.4 T·m −9%
Xmax5.3 mm −52%, worse
Sensitivity97.8 dB +4.8, better
BMS12N804
No current priceFs39 Hz +11%, worse
Qts0.29 +9%
Vas71 L −13%, better
BL20.4 T·m –
Xmax8 mm −27%, worse
Sensitivity93.4 dB –
Oberton12L300
No current priceFs54 Hz +54%, worse
Qts0.25 −4%
Vas79.6 L –
BL16.8 T·m −17%, worse
Xmax3.3 mm −70%, worse
Sensitivity98.8 dB +5.8, 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 | £213.05, the lowest price | In stock | Visit shop at Lean Audio |
Best price over time
Tracked since 1 Apr