Dayton AudioGF180-8
£18.93 · 77% less, betterFs53 Hz −65%, better
Qts0.50 –
Vas15.5 L +574%, worse
BL7.9 T·m −46%, worse
Xmax4 mm +14%, better
Sensitivity87.9 dB −5.2, worse
6.5-inch LF driver · 6MD series · 38 mm voice coil · 120 W
B&C 6MD38 16Ω
150–6000 Hz
£80.57
SteadyJP Leisure · In stock · All 3 offers
- Fs
- 150Hz
- Xmax
- 3.5mm
- SPL
- 93dB
- Pe
- 120W
- BL
- 14.5T·m
- Vd
- 46cm³
- Qts
- 0.50
- Vas
- 2L
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 5a3011ead1b2…Medium confidence5,729 selected pixels of 5,729 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 5a3011ead1b2…Medium confidence3,483 selected pixels of 3,483
Published graphs
B&C 6MD38 is a 6.5-inch 16 ohm LF driver rated at 120 W RMS. The validated T/S data includes Fs 150 Hz, Qts 0.50, Vas 2.3 L, Xmax 3.5 mm, sensitivity 93.1 dB, plus 46 cm³ Vd and 246 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 £80.57.
The published T/S values agree with each other
Thiele/Small
- Fs
- 150Hz
- Qts
- 0.50
- Qes
- 0.61
- Qms
- 2.8
- Vas
- 2.3L
- Re
- 11.7Ω
- Le
- 0.40mH
Motor and cone
- BL
- 14.5T·m
- Sd
- 132cm²
- Mms
- 11g
- Xmax
- 3.5mm
- Vd †
- 46cm³
- Voice coil
- 38mm
- Flux density
- 1.40T
Power and response
- Sensitivity †
- 93.1dB
- Manufacturer sensitivity
- 95dB
- Power
- 120W
- Nominal power
- 120W
- Impedance
- 16Ω
- Min. impedance
- 13.3Ω
- Range
- 150–6000Hz
- EBP †
- 246 · Leans vented
Size and mounting
- Diameter
- 187mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Depth
- 82mm
- Weight
- 2.3kg
Sensitivity shows 93.1 dB, calculated from the T/S values. B&C publishes 95.0 dB, 1.9 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 14.5T·m
- Fs
- 150Hz
- Le
- 0.40mH
- Re
- 11.7Ω
- Sd
- 132cm²
- Mms
- 11g
- Qes
- 0.61
- Qms
- 2.8
- Qts
- 0.50
- SPL
- 93.1dB
- Vas
- 2.3L
- Xmax
- 3.5mm
- Power
- 120W
- Impedance
- 16Ω
- Flux density
- 1.40T
- Sensitivity
- 95dB
- Low limit
- 150Hz
- Nominal power
- 120W
- Calculated sensitivity †
- 93.1dB
- High limit
- 6000Hz
- Manufacturer sensitivity
- 95dB
- Min. impedance
- 13.3Ω
- Voice coil
- 38mm
- Weight
- 2.3kg
- Diameter
- 187mm
- Depth
- 82mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Bl
- 14.5 Tm
- Fs
- 150 Hz
- Le
- 0.4 mH
- Re
- 11.7 Ω
- Sd
- 132 cm² (20.5 in²)
- Ebp
- 246 Hz
- Mms
- 11 g
- Qes
- 0.61
- Qms
- 2.8
- Qts
- 0.5
- Vas
- 2.3 dm³ (0.08 ft³)
- Η0
- 1.4 %
- Cone
- RCK06MD3816
- Xmax
- 3.5 mm
- Xvar
- 2 mm
- Depth
- 82 mm (3.2 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 2.3 kg (5.07 lb)
- Pole design
- T-Pole
- Sensitivity
- 95 dB
- Flux density
- 1.4 T
- Shipping box
- 210x210x125 mm (8.27x8.27x4.92 in)
- Winding depth
- 9 mm (0.35 in)
- Shipping units
- 1 pcs
- Surround shape
- Triple Roll
- Former material
- Glass Fibre
- Frequency range
- 150 Hz - 6000 Hz
- Magnet material
- Ferrite
- Shipping weight
- 2.5 kg (5.51 lb)
- Nominal diameter
- 170 mm (6.5 in)
- Overall diameter
- 187 mm (7.4 in)
- Winding material
- Aluminium
- Minimum impedance
- 13.3 Ω
- Nominal impedance
- 16 Ω
- Magnetic gap depth
- 6 mm (0.25 in)
- Voice coil diameter
- 38 mm (1.5 in)
- Bolt circle diameter
- 172 mm (6.7 in)
- Woofer cone treatment
- None
- Baffle cutout diameter
- 145 mm (5.7 in)
- Nominal power handling
- 120 W
- Continuous power handling
- 240 W
- Flange and gasket thickness
- 9 mm (0.35 in)
- Air volume occupied by driver
- 0.8 dm³ (0.03 ft³)
02
Compare
Same-size drivers, compared with the 6MD38. Clear differences are green when better and red when worse.
This driver6MD38
Best price
£80.57
Fs
150 Hz
Qts
0.50
Vas
2.3 L
BL
14.5 T·m
Xmax
3.5 mm
Sensitivity
93.1 dB
Power
120 W
REDCATT61FHM-2
£20.16 · 75% less, betterFs44 Hz −71%, better
Qts0.52 +4%
Vas14.4 L +526%, worse
BL6.0 T·m −58%, worse
Xmax3.2 mm −9%
Sensitivity85.3 dB −7.8, worse
MonacorSPH-174KE
£29.64 · 63% less, betterFs42 Hz −72%, better
Qts0.51 –
Vas26 L +1030%, worse
BL5.9 T·m −59%, worse
Xmax3 mm −14%, worse
Sensitivity86.8 dB −6.3, worse
REDCATT61FIND
£29.64 · 63% less, betterFs130 Hz −13%, better
Qts0.62 +24%, worse
Vas2.6 L +15%, worse
BL15.6 T·m +8%
Xmax2.3 mm −34%, worse
Sensitivity91.2 dB −1.9
Dayton AudioSIG150-4
£32.10 · 60% less, betterFs62 Hz −59%, better
Qts0.49 –
Vas8.7 L +278%, worse
BL5.2 T·m −64%, worse
Xmax4 mm +14%, better
Sensitivity87.8 dB −5.3, worse
CelestionTRUVOX 0615
£32.65 · 59% less, betterFs90 Hz −40%, better
Qts0.47 −6%
Vas7.4 L +223%, worse
BL8.0 T·m −45%, worse
Xmax3.5 mm –
Sensitivity92.2 dB −0.9
FaneSOVEREIGN 6-100
£42.00 · 48% less, betterFs115 Hz −23%, better
Qts0.64 +28%, worse
Vas2.2 L −4%
BL13.3 T·m −9%
Xmax2.5 mm −29%, worse
Sensitivity89 dB −4.1, worse
LavoceMAF061.50
£42.73 · 47% less, betterFs177 Hz +18%, worse
Qts0.52 +4%
Vas1.9 L −17%, better
BL10.5 T·m −27%, worse
Xmax3.6 mm –
Sensitivity94.7 dB +1.6
EminenceALPHA-6A
£57.54 · 29% less, betterFs103 Hz −31%, better
Qts0.54 +8%
Vas5.8 L +152%, worse
BL8 T·m −45%, worse
Xmax3.5 mm –
Sensitivity92.3 dB −0.8
EminenceALPHA 6C
£57.54 · 29% less, betterFs107 Hz −29%, better
Qts0.45 −10%
Vas5.7 L +148%, worse
BL6.4 T·m −56%, worse
Xmax3.5 mm –
Sensitivity93.6 dB +0.5
WavecorWF168WA06
£58.30 · 28% less, betterFs41 Hz −73%, better
Qts0.50 –
Vas27.7 L +1104%, worse
BL6.4 T·m −56%, worse
Xmax3 mm −14%, worse
Sensitivity87.5 dB −5.6, worse
WavecorWF146WA02
£58.30 · 28% less, betterFs58 Hz −61%, better
Qts0.51 –
Vas10 L +335%, worse
BL6.4 T·m −56%, worse
Xmax3 mm −14%, worse
Sensitivity87.6 dB −5.5, worse
WavecorWF168WA02
£61.33 · 24% less, betterFs49 Hz −67%, better
Qts0.52 +4%
Vas24.6 L +970%, worse
BL6.4 T·m −56%, worse
Xmax3 mm −14%, worse
Sensitivity89.2 dB −3.9, worse
Beyma6MI100
£67.06 · 17% less, betterFs128 Hz −15%, better
Qts0.51 –
Vas3.1 L +35%, worse
BL10.8 T·m −26%, worse
Xmax3 mm −14%, worse
Sensitivity92.8 dB –
B&C6MDN44
£94.86 · 18% more, worseFs138 Hz −8%
Qts0.47 −6%
Vas2.8 L +22%, worse
BL14.5 T·m –
Xmax3 mm −14%, worse
Sensitivity93.2 dB –
B&C6NDL38
£98.16 · 22% more, worseFs70 Hz −53%, better
Qts0.50 –
Vas8.9 L +287%, worse
BL11.7 T·m −19%, worse
Xmax6 mm +71%, better
Sensitivity89.6 dB −3.5, worse
B&C6MBX44
£121.81 · 51% more, worseFs115 Hz −23%, better
Qts0.35 −30%, better
Vas4 L +74%, worse
BL14.7 T·m –
Xmax3.5 mm –
Sensitivity93.7 dB +0.6
Tang BandW6-2144
£135.43 · 68% more, worseFs45 Hz −70%, better
Qts0.45 −10%
Vas34.6 L +1404%, worse
BL5.5 T·m −62%, worse
Xmax3 mm −14%, worse
Sensitivity89.1 dB −4, worse
B&C6NSM51
£150.76 · 87% more, worseFs280 Hz +87%, worse
Qts0.60 +20%, worse
Vas0.7 L −70%, better
BL13.9 T·m −4%
Xmax2.8 mm −20%, worse
Sensitivity95.6 dB +2.5, better
SB AudienceNERO-6MRN150D
£169.35 · 110% more, worseFs200 Hz +33%, worse
Qts0.48 −4%
Vas1.1 L −52%, better
BL13.1 T·m −10%
Xmax3.4 mm –
Sensitivity93.8 dB +0.7
SB AudienceNERO-6MRN151D
No current priceFs230 Hz +53%, worse
Qts0.48 −4%
Vas0.8 L −65%, better
BL14.5 T·m –
Xmax4 mm +14%, better
Sensitivity94.3 dB +1.2
CelestionCN0617M
No current priceFs198 Hz +32%, worse
Qts0.50 –
Vas2.0 L −12%, better
BL17.6 T·m +22%, better
Xmax2.7 mm −23%, worse
Sensitivity96.6 dB +3.5, better
CIAREHMB165
No current priceFs86 Hz −43%, better
Qts0.53 +6%
Vas8.6 L +274%, worse
BL7 T·m −52%, worse
Xmax3.5 mm –
Sensitivity91.4 dB −1.7
LavoceMAN061.80
No current priceFs172 Hz +15%, worse
Qts0.57 +14%, worse
Vas1.6 L −31%, better
BL11.0 T·m −24%, worse
Xmax3 mm −14%, worse
Sensitivity93 dB –
FaitalPRO6FE400
No current priceFs100 Hz −33%, better
Qts0.50 –
Vas5.5 L +139%, worse
BL13 T·m −10%, worse
Xmax4.8 mm +36%, better
Sensitivity91.9 dB −1.2
WavecorWF146OM02
No current priceFs50 Hz −67%, better
Qts0.51 –
Vas13.6 L +491%, worse
BL5.4 T·m −63%, worse
Xmax3.3 mm −6%
Sensitivity86.9 dB −6.2, worse
Dayton AudioCFC180-8
No current priceFs51 Hz −66%, better
Qts0.51 –
Vas12.4 L +441%, worse
BL9 T·m −38%, worse
Xmax4 mm +14%, better
Sensitivity86.5 dB −6.6, worse
Eighteen Sound6ND410
No current priceFs149 Hz –
Qts0.48 −4%
Vas6.2 L +170%, worse
BL13 T·m −10%, worse
Xmax2 mm −43%, worse
Sensitivity97.7 dB +4.6, better
CelestionNTR06-1705B
No current priceFs133 Hz −11%, better
Qts0.44 −12%, better
Vas3.6 L +58%, worse
BL10.7 T·m −26%, worse
Xmax4 mm +14%, better
Sensitivity93.7 dB +0.6
PRV Audio6MB400-4
No current priceFs125 Hz −17%, better
Qts0.52 +4%
Vas5.3 L +130%, worse
BL6.6 T·m −55%, worse
Xmax3 mm −14%, worse
Sensitivity94.7 dB +1.6
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Parts Express5.0 out of 51 rating · Checked 9 Oct 2026Read reviews on Parts Express
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
JP Leisure | £80.57, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £80.57 | In stock | Visit shop at JP Leisure | |
Parts Express Import VAT and duty may apply | £96.81 | 20% above the lowest price | 1 in stock | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£78.78 → £80.57Up 2.3% from £78.78