- Net volume
- 100L
- Tuning
- 53Hz
Eighteen Sound gives the volume and tuning; the port is sized for the driver when you open it.
12-inch LF driver · 400 W
Eighteen Sound 12MB650 8Ω
8 Ω · 45–5000 Hz
No price for delivery to the UK
- Fs
- 48Hz
- Xmax
- 5.5mm
- SPL
- 98dB
- Pe
- 400W
- BL
- 19T·m
- Vd
- 292cm³
- Qts
- 0.23
- Vas
- 90L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 1 trace
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
240 plotted pointsMedium confidence1,438 selected pixels of 1,703
Published graphs
Eighteen Sound 12MB650 is a 12-inch 8 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 48 Hz, Qts 0.23, Vas 90 L, Xmax 5.5 mm, sensitivity 98.2 dB, plus 292 cm³ Vd and 200 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
- 48Hz
- Qts
- 0.23
- Qes
- 0.24
- Qms
- 3.2
- Vas
- 90L
- Re
- 6Ω
- Le
- 0.83mH
Motor and cone
- BL
- 19T·m
- Sd
- 531cm²
- Mms
- 48g
- Xmax
- 5.5mm
- Vd †
- 292cm³
Power and response
- Sensitivity †
- 98.2dB
- Manufacturer sensitivity
- 98dB
- Power
- 400W
- Nominal power
- 400W
- Impedance
- 8Ω
- Range
- 45–5000Hz
- EBP †
- 200 · Leans vented
Size and mounting
- Diameter
- 310mm
- Cutout
- 280mm
- Bolt circle
- 295mm
- Depth
- 143mm
- Weight
- 6.8kg
Other published values
- Power Program
- 800
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 12″
- BL
- 19T·m
- Fs
- 48Hz
- Le
- 0.83mH
- Re
- 6Ω
- Sd
- 531cm²
- Mms
- 48g
- Qes
- 0.24
- Qms
- 3.2
- Qts
- 0.23
- SPL
- 98.2dB
- Vas
- 90L
- Xmax
- 5.5mm
- Power
- 400W
- Impedance
- 8Ω
- Sensitivity
- 98dB
- Low limit
- 45Hz
- Nominal power
- 400W
- Power Program
- 800
- Calculated sensitivity †
- 98.2dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 98dB
- Weight
- 6.8kg
- Diameter
- 310mm
- Depth
- 143mm
- Cutout
- 280mm
- Bolt circle
- 295mm
02
Designs
What Eighteen Sound suggests for the 12MB650. No published designs name it yet.
How we find designsEighteen Sound’s suggested box
From Eighteen Sound’s 12MB650 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 12MB650. Clear differences are green when better and red when worse.
This driver12MB650
Best price
–
Fs
48 Hz
Qts
0.23
Vas
90 L
BL
19 T·m
Xmax
5.5 mm
Sensitivity
98.2 dB
Power
400 W
RCFLF12G301
£109.81Fs43 Hz −10%, better
Qts0.22 −4%
Vas97 L +8%
BL19 T·m –
Xmax7 mm +27%, better
Sensitivity97.3 dB −0.9
EminenceKAPPA PRO-12A
£130.90Fs37 Hz −23%, better
Qts0.24 +4%
Vas121 L +34%, worse
BL17.3 T·m −9%
Xmax4.8 mm −13%, worse
Sensitivity95.9 dB −2.3, worse
B&C12HPL76
£135.13Fs49 Hz –
Qts0.25 +9%
Vas91 L –
BL17.3 T·m −9%
Xmax4 mm −27%, worse
Sensitivity98.2 dB –
Beyma12WR400
£142.43Fs42 Hz −13%, better
Qts0.27 +17%, worse
Vas91 L –
BL18 T·m −5%
Xmax6.3 mm +15%, better
Sensitivity95.8 dB −2.4, worse
B&C12PLB76
£149.88Fs50 Hz +4%
Qts0.23 –
Vas75 L −17%, better
BL18.6 T·m –
Xmax5 mm −9%
Sensitivity97.9 dB –
B&C12CLA76
£153.54Fs52 Hz +8%
Qts0.25 +9%
Vas56 L −38%, better
BL20.2 T·m +6%
Xmax5.3 mm −4%
Sensitivity96.8 dB −1.4
FaitalPRO12FH510
£163.54Fs45 Hz −6%
Qts0.24 +4%
Vas81.3 L −10%
BL18.9 T·m –
Xmax7.5 mm +36%, better
Sensitivity96.7 dB −1.5
FaitalPRO12FH500
£180.28Fs45 Hz −6%
Qts0.25 +9%
Vas87.3 L −3%
BL17.5 T·m −8%
Xmax7.5 mm +36%, better
Sensitivity96.9 dB −1.3
RCFMB12N301
£183.23Fs54 Hz +13%, worse
Qts0.24 +4%
Vas71 L −21%, better
BL19 T·m –
Xmax6 mm +9%
Sensitivity98.4 dB –
Eighteen Sound12ND730
£230.40Fs45 Hz −6%
Qts0.23 –
Vas90 L –
BL19.2 T·m –
Xmax6.5 mm +18%, better
Sensitivity97.4 dB −0.8
Eighteen Sound12ND710
£240.31Fs52 Hz +8%
Qts0.20 −13%, better
Vas92 L –
BL18 T·m −5%
Xmax5 mm −9%
Sensitivity100.1 dB +1.9
BMS12N620
£247.26Fs45 Hz −7%
Qts0.25 +9%
Vas72.7 L −19%, better
BL20.6 T·m +8%
Xmax5.5 mm –
Sensitivity96 dB −2.2, worse
BMS12N803
£285.67Fs41 Hz −15%, better
Qts0.24 +4%
Vas77 L −14%, better
BL21.4 T·m +12%, better
Xmax6 mm +9%
Sensitivity95.3 dB −2.9, worse
Beyma12CXA400ND
£349.99Fs45 Hz −6%
Qts0.25 +9%
Vas88.5 L –
BL21.4 T·m +13%, better
Xmax6 mm +9%
Sensitivity96.9 dB −1.3
BMS12CN680
£365.51Fs46 Hz −4%
Qts0.26 +13%, worse
Vas58 L −36%, better
BL20.6 T·m +8%
Xmax5.5 mm –
Sensitivity95.2 dB −3, worse
LavoceCAN123.00TH
No current priceFs46 Hz −4%
Qts0.22 −4%
Vas91 L –
BL18.5 T·m –
Xmax6 mm +9%
Sensitivity97.9 dB –
Oberton12B400
No current priceFs50 Hz +5%
Qts0.25 +8%
Vas74.7 L −17%, better
BL18.4 T·m −3%
Xmax5.3 mm −5%
Sensitivity97.8 dB –
Beyma12CXA400FE
No current priceFs42 Hz −13%, better
Qts0.25 +9%
Vas94 L +4%
BL19.8 T·m +4%
Xmax6 mm +9%
Sensitivity96.3 dB −1.9
RCFLF12G801
No current priceFs43 Hz −10%, better
Qts0.22 −4%
Vas97 L +8%
BL19 T·m –
Xmax7 mm +27%, better
Sensitivity97.3 dB −0.9
RCFLF12P901
No current priceFs43 Hz −10%, better
Qts0.22 −4%
Vas97 L +8%
BL19 T·m –
Xmax7 mm +27%, better
Sensitivity97.3 dB −0.9
Oberton12NXL400
No current priceFs49 Hz –
Qts0.20 −12%, better
Vas79.2 L −12%, better
BL20.6 T·m +8%
Xmax5.3 mm −5%
Sensitivity98.5 dB –
Oberton12B450
No current priceFs46 Hz −4%
Qts0.23 –
Vas71.8 L −20%, better
BL19.3 T·m –
Xmax7.8 mm +41%, better
Sensitivity96.7 dB −1.5
No photo
PHL Audio4051
No current priceFs49 Hz –
Qts0.20 −13%, better
Vas85.2 L −5%
BL20.9 T·m +10%
Xmax5 mm −9%
Sensitivity98.8 dB +0.6
Oberton12H4CX72
No current priceFs50 Hz +4%
Qts0.25 +10%
Vas74.7 L −17%, better
BL19.9 T·m +5%
Xmax4.5 mm −18%, worse
Sensitivity97.6 dB −0.6
Eighteen Sound12MB710
No current priceFs46 Hz −4%
Qts0.20 −13%, better
Vas81 L −10%, better
BL20.5 T·m +8%
Xmax5 mm −9%
Sensitivity98 dB –
Eighteen Sound12MB720
No current priceFs46 Hz −4%
Qts0.20 −13%, better
Vas81 L −10%, better
BL20.5 T·m +8%
Xmax5 mm −9%
Sensitivity98 dB –
Eighteen Sound12MB810
No current priceFs46 Hz −4%
Qts0.20 −13%, better
Vas81 L −10%, better
BL20.5 T·m +8%
Xmax5 mm −9%
Sensitivity98 dB –
Oberton12B401
No current priceFs47 Hz –
Qts0.24 +7%
Vas69.6 L −23%, better
BL19.9 T·m +5%
Xmax6.8 mm +23%, better
Sensitivity96.5 dB −1.7
No photo
PHL Audio4071-1
No current priceFs47 Hz –
Qts0.24 +4%
Vas57.8 L −36%, better
BL20.6 T·m +8%
Xmax6.5 mm +18%, better
Sensitivity95.7 dB −2.5, worse
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 Business | £153.26 | Out of stock | Visit shop at Lean Business | |
Lean Audio | £201.31 | Out of stock | Visit shop at Lean Audio |