- Net volume
- 3L
- Tuning
- 120Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
6.5-inch LF driver · 6MBX series · 44 mm voice coil · 200 W
B&C 6MBX44 16Ω
115–5000 Hz
£121.81
SteadyJP Leisure · In stock · All 3 offers
- Fs
- 115Hz
- Xmax
- 3.5mm
- SPL
- 94dB
- Pe
- 200W
- BL
- 14.7T·m
- Vd
- 46cm³
- Qts
- 0.35
- Vas
- 4L
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 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v2
free-air SPL
Frequency response
240 plotted pointsSource file SHA-256 7fc11c04cea4…Medium confidence4,501 selected pixels of 4,501 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 7fc11c04cea4…Medium confidence3,848 selected pixels of 3,848
Published graphs
B&C 6MBX44 is a 6.5-inch 16 ohm LF driver rated at 200 W RMS. The validated T/S data includes Fs 115 Hz, Qts 0.35, Vas 4 L, Xmax 3.5 mm, sensitivity 93.7 dB, plus 46 cm³ Vd and 280 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 £121.81.
The published T/S values agree with each other
Thiele/Small
- Fs
- 115Hz
- Qts
- 0.35
- Qes
- 0.41
- Qms
- 2.9
- Vas
- 4L
- Re
- 10.4Ω
- Le
- 0.34mH
Motor and cone
- BL
- 14.7T·m
- Sd
- 132cm²
- Mms
- 12g
- Xmax
- 3.5mm
- Vd †
- 46cm³
- Voice coil
- 44mm
- Flux density
- 1.55T
Power and response
- Sensitivity †
- 93.7dB
- Manufacturer sensitivity
- 98dB
- Power
- 200W
- Nominal power
- 200W
- Impedance
- 16Ω
- Min. impedance
- 11.9Ω
- Range
- 115–5000Hz
- EBP †
- 280 · Leans vented
Size and mounting
- Diameter
- 187mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Depth
- 87mm
- Weight
- 1.6kg
Sensitivity shows 93.7 dB, calculated from the T/S values. B&C publishes 98.0 dB, 4.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 14.7T·m
- Fs
- 115Hz
- Le
- 0.34mH
- Re
- 10.4Ω
- Sd
- 132cm²
- Mms
- 12g
- Qes
- 0.41
- Qms
- 2.9
- Qts
- 0.35
- SPL
- 93.7dB
- Vas
- 4L
- Xmax
- 3.5mm
- Power
- 200W
- Impedance
- 16Ω
- Flux density
- 1.55T
- Sensitivity
- 98dB
- Low limit
- 115Hz
- Nominal power
- 200W
- Calculated sensitivity †
- 93.7dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 98dB
- Min. impedance
- 11.9Ω
- Voice coil
- 44mm
- Weight
- 1.6kg
- Diameter
- 187mm
- Depth
- 87mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Bl
- 14.7 Tm
- Fs
- 115 Hz
- Le
- 0.34 mH
- Re
- 10.4 Ω
- Sd
- 132 cm² (20.46 in²)
- Ebp
- 280 Hz
- Mms
- 12 g
- Qes
- 0.41
- Qms
- 2.9
- Qts
- 0.35
- Vas
- 4 dm³ (0.14 ft³)
- Η0
- 1.4 %
- Cone
- RCK06MBX4416
- Xmax
- 3.5 mm
- Xvar
- 3 mm
- Depth
- 87 mm (3.43 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 1.59 kg (3.51 lb)
- Pole design
- T-Pole
- Sensitivity
- 98 dB
- Flux density
- 1.55 T
- Shipping box
- 210x210x125 mm (8.27x8.27x4.92 in)
- Winding depth
- 10 mm (0.37 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 115 Hz - 5000 Hz
- Magnet material
- Neodymium Ring
- Shipping weight
- 1.79 kg (3.95 lb)
- Nominal diameter
- 170 mm (6.5 in)
- Overall diameter
- 187 mm (7.36 in)
- Winding material
- Aluminium
- Minimum impedance
- 11.9 Ω
- Nominal impedance
- 16 Ω
- Magnetic gap depth
- 6 mm (0.25 in)
- Recommended tuning
- 120 Hz
- Voice coil diameter
- 44 mm (1.7 in)
- Bolt circle diameter
- 172 mm (6.7 in)
- Recommended enclosure
- 3 dm³ (0.11 ft³)
- Woofer cone treatment
- Waterproof Impregnated Cone
- Baffle cutout diameter
- 145 mm (5.7 in)
- Nominal power handling
- 200 W
- Continuous power handling
- 400 W
- Flange and gasket thickness
- 11 mm (0.4 in)
- Air volume occupied by driver
- 0.6 dm³ (0.02 ft³)
B&C’s suggested box
From B&C’s 6MBX44 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 6MBX44. Clear differences are green when better and red when worse.
This driver6MBX44
Best price
£121.81
Fs
115 Hz
Qts
0.35
Vas
4 L
BL
14.7 T·m
Xmax
3.5 mm
Sensitivity
93.7 dB
Power
200 W
LavoceWSF061.52
£26.27 · 78% less, betterFs91 Hz −21%, better
Qts0.34 –
Vas6.6 L +66%, worse
BL10.8 T·m −26%, worse
Xmax3.8 mm +9%
Sensitivity93.4 dB –
Dayton AudioDC160-8
£26.35 · 78% less, betterFs36 Hz −69%, better
Qts0.34 –
Vas17.9 L +347%, worse
BL10.7 T·m −27%, worse
Xmax3.1 mm −10%, worse
Sensitivity85.3 dB −8.4, worse
CIARECME160
£40.47 · 67% less, betterFs110 Hz −4%
Qts0.40 +14%, worse
Vas4.5 L +13%, worse
BL7.6 T·m −48%, worse
Xmax3.5 mm –
Sensitivity93.3 dB –
FaitalPRO6FE300
£41.32 · 66% less, betterFs98 Hz −15%, better
Qts0.41 +17%, worse
Vas4.4 L +10%, worse
BL8.3 T·m −43%, worse
Xmax3.9 mm +11%, better
Sensitivity91.9 dB −1.8
FaitalPRO6PR122
£84.13 · 31% less, betterFs110 Hz −4%
Qts0.39 +11%, worse
Vas4.7 L +18%, worse
BL10.5 T·m −29%, worse
Xmax2.8 mm −21%, worse
Sensitivity93.6 dB –
FaitalPRO6PR150
£85.46 · 30% less, betterFs100 Hz −13%, better
Qts0.34 –
Vas4.9 L +23%, worse
BL11.6 T·m −21%, worse
Xmax2.6 mm −24%, worse
Sensitivity93.5 dB –
FaitalPRO6RS140
£87.80 · 28% less, betterFs65 Hz −43%, better
Qts0.36 –
Vas9.9 L +148%, worse
BL14.2 T·m −3%
Xmax5.5 mm +57%, better
Sensitivity90.6 dB −3.1, worse
Beyma6P200FE
£89.32 · 27% less, betterFs66 Hz −43%, better
Qts0.35 –
Vas8.8 L +120%, worse
BL13.6 T·m −7%
Xmax4 mm +14%, better
Sensitivity90.3 dB −3.4, worse
Beyma6G40ND
£97.57 · 20% less, betterFs100 Hz −13%, better
Qts0.38 +9%
Vas3.7 L −7%
BL10.6 T·m −28%, worse
Xmax3 mm −14%, worse
Sensitivity91.2 dB −2.5, worse
Eighteen Sound6M44
£98.97 · 19% less, betterFs102 Hz −11%, better
Qts0.29 −17%, better
Vas3.8 L −5%
BL13.4 T·m −9%
Xmax2.3 mm −36%, worse
Sensitivity93.2 dB −0.5
REDCATT6NPM
£103.09 · 15% less, betterFs150 Hz +30%, worse
Qts0.35 –
Vas2.9 L −28%, better
BL13.7 T·m −7%
Xmax0.4 mm −89%, worse
Sensitivity96.1 dB +2.4, better
B&C6FHX51
£129.07 · 6% more, worseFs85 Hz −26%, better
Qts0.37 +6%
Vas5 L +25%, worse
BL11.3 T·m −23%, worse
Xmax5.7 mm +63%, better
Sensitivity90.9 dB −2.8, worse
Eighteen Sound6NTLW2000
£160.09 · 31% more, worseFs86 Hz −25%, better
Qts0.38 +9%
Vas4.8 L +20%, worse
BL14.1 T·m −4%
Xmax4.9 mm +40%, better
Sensitivity90.5 dB −3.2, worse
Eighteen Sound6NMB900
£160.09 · 31% more, worseFs100 Hz −13%, better
Qts0.34 –
Vas6.7 L +66%, worse
BL12.4 T·m −16%, worse
Xmax3 mm −14%, worse
Sensitivity94.5 dB +0.8
B&C6HCX51
£175.82 · 44% more, worseFs89 Hz −23%, better
Qts0.38 +9%
Vas5 L +25%, worse
BL10.9 T·m −26%, worse
Xmax5.5 mm +57%, better
Sensitivity91.5 dB −2.2, worse
Beyma6NMFW
£219.76 · 80% more, worseFs40 Hz −65%, better
Qts0.34 –
Vas11 L +175%, worse
BL14 T·m −5%
Xmax9 mm +157%, better
Sensitivity85.1 dB −8.6, worse
LavoceMAN062.00
No current priceFs103 Hz −10%, better
Qts0.30 −14%, better
Vas4.1 L –
BL12.7 T·m −13%, worse
Xmax3.9 mm +11%, better
Sensitivity93.3 dB –
Oberton6NM150
No current priceFs124 Hz +8%
Qts0.38 +8%
Vas4 L –
BL11.6 T·m −21%, worse
Xmax2.3 mm −36%, worse
Sensitivity94.8 dB +1.1
HiViD6.4MKII
No current priceFs53 Hz −54%, better
Qts0.35 –
Vas8.5 L +113%, worse
BL7.8 T·m −47%, worse
Xmax3.5 mm –
Sensitivity86.9 dB −6.8, worse
Dayton AudioAPOLLO 6N
No current priceFs103 Hz −11%, better
Qts0.28 −20%, better
Vas3.5 L −13%, better
BL14.9 T·m –
Xmax3.8 mm +8%
Sensitivity93.2 dB −0.5
No photo
PHL Audio1663
No current priceFs125 Hz +9%
Qts0.32 −9%
Vas4 L –
BL12.5 T·m −15%, worse
Xmax2.5 mm −29%, worse
Sensitivity95.5 dB +1.8
No photo
PHL Audio1752NDU
No current priceFs119 Hz +3%
Qts0.30 −14%, better
Vas4.4 L +10%, worse
BL11.9 T·m −19%, worse
Xmax3 mm −14%, worse
Sensitivity95.5 dB +1.8
No photo
PHL Audio1660NDM
No current priceFs125 Hz +9%
Qts0.31 −11%, better
Vas4 L –
BL12.5 T·m −15%, worse
Xmax2.5 mm −29%, worse
Sensitivity95.6 dB +1.9
Tang BandW6-1936S
No current priceFs30 Hz −74%, better
Qts0.36 –
Vas4.7 L +17%, worse
BL21.6 T·m +47%, better
Xmax7.4 mm +111%, better
Sensitivity76.9 dB −16.8, worse
Sica6 N 2 PL
No current priceFs68 Hz −41%, better
Qts0.33 −6%
Vas8.7 L +117%, worse
BL9.5 T·m −35%, worse
Xmax3.5 mm –
Sensitivity90.8 dB −2.9, worse
CIARECW161N
No current priceFs52 Hz −55%, better
Qts0.35 –
Vas17.4 L +335%, worse
BL6.1 T·m −59%, worse
Xmax4 mm +14%, better
Sensitivity89.7 dB −4, worse
LavoceWSN061.52
No current priceFs90 Hz −22%, better
Qts0.39 +11%, worse
Vas5.9 L +48%, worse
BL9.9 T·m −33%, worse
Xmax3.8 mm +9%
Sensitivity92.1 dB −1.6
No photo
PHL Audio1683-26
No current priceFs125 Hz +9%
Qts0.32 −9%
Vas2.9 L −28%, better
BL12.5 T·m −15%, worse
Xmax2.5 mm −29%, worse
Sensitivity94.1 dB –
HiViD6.8+
No current priceFs44 Hz −62%, better
Qts0.36 –
Vas14.4 L +260%, worse
BL9.0 T·m −39%, worse
Xmax4 mm +14%, better
Sensitivity86.7 dB −7, worse
HiViD6.4+
No current priceFs44 Hz −62%, better
Qts0.36 –
Vas13.9 L +248%, worse
BL6.6 T·m −55%, worse
Xmax4 mm +14%, better
Sensitivity86.5 dB −7.2, 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 |
|---|---|---|---|---|
JP Leisure | £121.81, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £121.81 | In stock | Visit shop at JP Leisure | |
Blue Aran 3-5 months | £126.84 | 4.1% above the lowest price | Usually available in 3-5 months | Visit shop at Blue Aran |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£116.45 → £121.81Up 4.6% from £116.45
- 23 JunBlue Aran£126.88 → £126.84Down <0.1% from £126.88
- 5 JunBlue Aran£97.10 → £126.88Up 31% from £97.10