- Net volume
- 9L
- Tuning
- 62Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
6.5-inch LF driver · 6NDL series · 38 mm voice coil · 150 W
B&C 6NDL38 16Ω
70–6000 Hz
£98.16
SteadyJP Leisure · In stock · All 3 offers
- Fs
- 70Hz
- Xmax
- 6mm
- SPL
- 90dB
- Pe
- 150W
- BL
- 11.7T·m
- Vd
- 79cm³
- Qts
- 0.50
- Vas
- 9L
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 73c11fd9c049…Medium confidence4,932 selected pixels of 5,170 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 73c11fd9c049…Medium confidence3,973 selected pixels of 3,973
Published graphs
B&C 6NDL38 is a 6.5-inch 16 ohm LF driver rated at 150 W RMS. The validated T/S data includes Fs 70 Hz, Qts 0.50, Vas 8.9 L, Xmax 6 mm, sensitivity 89.6 dB, plus 79 cm³ Vd and 132 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 £98.16.
The published T/S values agree with each other
Thiele/Small
- Fs
- 70Hz
- Qts
- 0.50
- Qes
- 0.53
- Qms
- 10.3
- Vas
- 8.9L
- Re
- 11.3Ω
- Le
- 1mH
Motor and cone
- BL
- 11.7T·m
- Sd
- 132cm²
- Mms
- 15g
- Xmax
- 6mm
- Vd †
- 79cm³
- Voice coil
- 38mm
- Flux density
- 1.15T
Power and response
- Sensitivity †
- 89.6dB
- Manufacturer sensitivity
- 93dB
- Power
- 150W
- Nominal power
- 150W
- Impedance
- 16Ω
- Min. impedance
- 12.4Ω
- Range
- 70–6000Hz
- EBP †
- 132 · Leans vented
Size and mounting
- Diameter
- 187mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Depth
- 85mm
- Weight
- 1.2kg
Sensitivity shows 89.6 dB, calculated from the T/S values. B&C publishes 93.0 dB, 3.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 11.7T·m
- Fs
- 70Hz
- Le
- 1mH
- Re
- 11.3Ω
- Sd
- 132cm²
- Mms
- 15g
- Qes
- 0.53
- Qms
- 10.3
- Qts
- 0.50
- SPL
- 89.6dB
- Vas
- 8.9L
- Xmax
- 6mm
- Power
- 150W
- Impedance
- 16Ω
- Flux density
- 1.15T
- Sensitivity
- 93dB
- Low limit
- 70Hz
- Nominal power
- 150W
- Calculated sensitivity †
- 89.6dB
- High limit
- 6000Hz
- Manufacturer sensitivity
- 93dB
- Min. impedance
- 12.4Ω
- Voice coil
- 38mm
- Weight
- 1.2kg
- Diameter
- 187mm
- Depth
- 85mm
- Cutout
- 145mm
- Bolt circle
- 172mm
- Bl
- 11.7 Tm
- Fs
- 70 Hz
- Le
- 1 mH
- Re
- 11.3 Ω
- Sd
- 132 cm² (20.5 in²)
- Ebp
- 132 Hz
- Mms
- 15 g
- Qes
- 0.53
- Qms
- 10.29
- Qts
- 0.5
- Vas
- 8.9 dm³ (0.31 ft³)
- Η0
- 0.53 %
- Cone
- RCK06NDL3816
- Xmax
- 6 mm
- Xvar
- 5.5 mm
- Depth
- 85 mm (3.3 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 1.2 kg (2.6 lb)
- Pole design
- T-Pole
- Sensitivity
- 93 dB
- Flux density
- 1.15 T
- Shipping box
- 210x210x125 mm (8.27x8.27x4.92 in)
- Winding depth
- 12 mm (0.5 in)
- Shipping units
- 1 pcs
- Surround shape
- Roll
- Former material
- Kapton
- Frequency range
- 70 Hz - 6000 Hz
- Magnet material
- Neodymium Ring
- Shipping weight
- 1.4 kg (3.09 lb)
- Nominal diameter
- 170 mm (6.5 in)
- Overall diameter
- 187 mm (7.4 in)
- Winding material
- Copper
- Minimum impedance
- 12.4 Ω
- Nominal impedance
- 16 Ω
- Magnetic gap depth
- 6 mm (0.25 in)
- Recommended tuning
- 62 Hz
- Voice coil diameter
- 38 mm (1.5 in)
- Bolt circle diameter
- 172 mm (6.7 in)
- Recommended enclosure
- 9 dm³ (0.32 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 145 mm (5.7 in)
- Nominal power handling
- 150 W
- Continuous power handling
- 300 W
- Flange and gasket thickness
- 11 mm (0.4 in)
- Air volume occupied by driver
- 0.63 dm³ (0.02 ft³)
B&C’s suggested box
From B&C’s 6NDL38 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 6NDL38. Clear differences are green when better and red when worse.
This driver6NDL38
Best price
£98.16
Fs
70 Hz
Qts
0.50
Vas
8.9 L
BL
11.7 T·m
Xmax
6 mm
Sensitivity
89.6 dB
Power
150 W
Dayton AudioSIG150-4
£32.10 · 67% less, betterFs62 Hz −12%, better
Qts0.49 –
Vas8.7 L –
BL5.2 T·m −56%, worse
Xmax4 mm −33%, worse
Sensitivity87.8 dB −1.8
CelestionTRUVOX 0615
£32.65 · 67% less, betterFs90 Hz +28%, worse
Qts0.47 −6%
Vas7.4 L −16%, better
BL8.0 T·m −31%, worse
Xmax3.5 mm −42%, worse
Sensitivity92.2 dB +2.6, better
PeerlessHDS-P830874
£34.07 · 65% less, betterFs61 Hz −13%, better
Qts0.51 –
Vas10.6 L +19%, worse
BL8.7 T·m −26%, worse
Xmax7.3 mm +22%, better
Sensitivity88.1 dB −1.5
REDCATT61FHM-1
£40.32 · 59% less, betterFs37 Hz −47%, better
Qts0.49 –
Vas28.2 L +217%, worse
BL6.6 T·m −44%, worse
Xmax6.3 mm +5%
Sensitivity86.4 dB −3.2, worse
WavecorWF146WA02
£58.30 · 41% less, betterFs58 Hz −17%, better
Qts0.51 –
Vas10 L +12%, worse
BL6.4 T·m −45%, worse
Xmax3 mm −50%, worse
Sensitivity87.6 dB −2, worse
Beyma6MI100
£67.06 · 32% less, betterFs128 Hz +83%, worse
Qts0.51 –
Vas3.1 L −65%, better
BL10.8 T·m −8%
Xmax3 mm −50%, worse
Sensitivity92.8 dB +3.2, better
SB AudienceROSSO-6MW150D
£67.15 · 32% less, betterFs66 Hz −6%
Qts0.32 −36%, better
Vas8.8 L –
BL11.6 T·m –
Xmax5.2 mm −13%, worse
Sensitivity90.9 dB +1.3
B&C6PS38
£89.63 · 9% less, betterFs75 Hz +7%
Qts0.30 −40%, better
Vas8 L −10%, better
BL10.8 T·m −8%
Xmax6 mm –
Sensitivity92.4 dB +2.8, better
WavecorSW146WA01
£95.96 · 2% lessFs51 Hz −27%, better
Qts0.48 −4%
Vas5.5 L −38%, better
BL5.9 T·m −50%, worse
Xmax6 mm –
Sensitivity83.7 dB −5.9, worse
WavecorSW146WA02
£95.96 · 2% lessFs54 Hz −23%, better
Qts0.53 +6%
Vas5.5 L −38%, better
BL7.8 T·m −33%, worse
Xmax6 mm –
Sensitivity83.8 dB −5.8, worse
WavecorSW168WA01
£112.73 · 15% more, worseFs43 Hz −39%, better
Qts0.45 −10%
Vas9.6 L +8%
BL7.5 T·m −36%, worse
Xmax7 mm +17%, better
Sensitivity84.1 dB −5.5, worse
FaitalPRO6PR130
£122.77 · 25% more, worseFs175 Hz +150%, worse
Qts0.48 −4%
Vas4.2 L −53%, better
BL11.4 T·m –
Xmax4.6 mm −23%, worse
Sensitivity98 dB +8.4, better
PRV Audio6MR500-NDY
£138.01 · 41% more, worseFs105 Hz +49%, worse
Qts0.53 +6%
Vas5.1 L −42%, better
BL9.8 T·m −16%, worse
Xmax4.2 mm −30%, worse
Sensitivity92.4 dB +2.8, better
Tang BandW6-2253S
£143.94 · 47% more, worseFs40 Hz −43%, better
Qts0.51 –
Vas6.3 L −29%, better
BL7.9 T·m −33%, worse
Xmax5 mm −17%, worse
Sensitivity80.3 dB −9.3, worse
Scanspeak15W/8530K01
£157.04 · 60% more, worseFs38 Hz −46%, better
Qts0.50 –
Vas17 L +91%, worse
BL5.8 T·m −50%, worse
Xmax6.5 mm +8%
Sensitivity84.3 dB −5.3, worse
WavecorSW182BD04
£163.04 · 66% more, worseFs37 Hz −47%, better
Qts0.49 –
Vas12.7 L +43%, worse
BL10.2 T·m −13%, worse
Xmax7 mm +17%, better
Sensitivity83.1 dB −6.5, worse
BMS6C150
No current priceFs88 Hz +26%, worse
Qts0.46 −8%
Vas7.6 L −15%, better
BL11.4 T·m –
Xmax5 mm −17%, worse
Sensitivity92 dB +2.4, better
BMS6N160
No current priceFs89 Hz +27%, worse
Qts0.47 −6%
Vas7.7 L −13%, better
BL11.3 T·m −3%
Xmax5 mm −17%, worse
Sensitivity91.7 dB +2.1, better
BMS6S117
No current priceFs80 Hz +14%, worse
Qts0.43 −14%, better
Vas10.4 L +17%, worse
BL11.3 T·m −3%
Xmax5 mm −17%, worse
Sensitivity92.4 dB +2.8, better
PeerlessFSL-0615R01-08
No current priceFs84 Hz +20%, worse
Qts0.45 −10%
Vas6.7 L −24%, better
BL8.5 T·m −28%, worse
Xmax6 mm –
Sensitivity91 dB +1.4
FaitalPRO6FE400
No current priceFs100 Hz +43%, worse
Qts0.50 –
Vas5.5 L −38%, better
BL13 T·m +11%, better
Xmax4.8 mm −21%, worse
Sensitivity91.9 dB +2.3, better
Eighteen Sound6ND410
No current priceFs149 Hz +113%, worse
Qts0.48 −4%
Vas6.2 L −30%, better
BL13 T·m +11%, better
Xmax2 mm −67%, worse
Sensitivity97.7 dB +8.1, better
Tang BandW6-1914S
No current priceFs65 Hz −7%
Qts0.44 −12%, better
Vas6.8 L −24%, better
BL11.6 T·m –
Xmax0.5 mm −92%, worse
Sensitivity88 dB −1.6
B&C6CLA51
No current priceFs89 Hz +27%, worse
Qts0.41 −18%, better
Vas5.7 L −36%, better
BL12.8 T·m +9%
Xmax5.5 mm −8%
Sensitivity91.4 dB +1.8
CIARECXI160
No current priceFs91 Hz +30%, worse
Qts0.51 –
Vas7.8 L −12%, better
BL6.8 T·m −42%, worse
Xmax4.5 mm −25%, worse
Sensitivity92.2 dB +2.6, better
KartesianWIB145_VHE
No current priceFs56 Hz −20%, better
Qts0.52 +4%
Vas9.7 L +9%
BL5 T·m −57%, worse
Xmax6 mm –
Sensitivity89 dB −0.6
HiViS6.5RMKII
No current priceFs52 Hz −26%, better
Qts0.48 −4%
Vas15.7 L +76%, worse
BL6.4 T·m −45%, worse
Xmax5.8 mm −3%
Sensitivity88.1 dB −1.5
Lii AudioFAST 6
No current priceFs63 Hz −10%, better
Qts0.46 −9%
Vas22.9 L +158%, worse
BL4.3 T·m −64%, worse
Xmax6 mm –
Sensitivity92.5 dB +2.9, better
MonacorSP-6/100PA
No current priceFs90 Hz +29%, worse
Qts0.44 −12%, better
Vas8 L −10%, better
BL9.3 T·m −21%, worse
Xmax0.75 mm −88%, worse
Sensitivity92.8 dB +3.2, better
HiViD6.8MKII
No current priceFs54 Hz −23%, better
Qts0.40 −20%, better
Vas8.9 L –
BL9.8 T·m −16%, worse
Xmax3.5 mm −42%, worse
Sensitivity86.6 dB −3, 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 | £98.16, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £98.16 | In stock | Visit shop at JP Leisure | |
Blue Aran 5-7 weeks | £99.00 | 0.9% above the lowest price | 14 in stock | Visit shop at Blue Aran |
Best price over time
Tracked since 1 Apr
Recent changes
- 17 JulBlue Aran£99.41 → £99.00Down 0.4% from £99.41
- 23 JunJP Leisure£98.41 → £98.16Down 0.3% from £98.41
- 23 JunBlue Aran£99.44 → £99.41Down <0.1% from £99.44