B&C design · archived
F081AN
8"/1" 400W Full Range Enclosure - 8" Neo Woofer + 1" HF Driver on 90°x60° Hyperbolic cosine flare Horn
- Drivers
- 8MDN51, 8 Ω
- Power
- 400 W
Designed with the 8 Ω version.
8-inch LF driver · 8MDN series · 51 mm voice coil · 200 W
B&C 8MDN51 16Ω
70–4000 Hz
£136.46
SteadyJP Leisure · In stock · All 6 offers
- Fs
- 68Hz
- Xmax
- 6mm
- SPL
- 95dB
- Pe
- 200W
- BL
- 17.8T·m
- Vd
- 132cm³
- Qts
- 0.27
- Vas
- 18L
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 16ebac8cc6d3…Medium confidence6,526 selected pixels of 6,526 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 16ebac8cc6d3…Medium confidence3,765 selected pixels of 3,765
Published graphs
B&C 8MDN51 is an 8-inch 16 ohm LF driver rated at 200 W RMS. The validated T/S data includes Fs 68 Hz, Qts 0.27, Vas 17.5 L, Xmax 6 mm, sensitivity 94.8 dB, plus 132 cm³ Vd and 234 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 £136.46.
The published T/S values agree with each other
Thiele/Small
- Fs
- 68Hz
- Qts
- 0.27
- Qes
- 0.29
- Qms
- 5.2
- Vas
- 17.5L
- Re
- 10Ω
- Le
- 1.25mH
Motor and cone
- BL
- 17.8T·m
- Sd
- 220cm²
- Mms
- 22g
- Xmax
- 6mm
- Vd †
- 132cm³
- Voice coil
- 51mm
- Flux density
- 1.45T
Power and response
- Sensitivity †
- 94.8dB
- Manufacturer sensitivity
- 97dB
- Power
- 200W
- Nominal power
- 200W
- Impedance
- 16Ω
- Min. impedance
- 11.6Ω
- Range
- 70–4000Hz
- EBP †
- 234 · Leans vented
Size and mounting
- Diameter
- 225mm
- Cutout
- 187mm
- Bolt circle
- 210mm
- Depth
- 95mm
- Weight
- 2.6kg
Sensitivity shows 94.8 dB, calculated from the T/S values. B&C publishes 97.0 dB, 2.2 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 17.8T·m
- Fs
- 68Hz
- Le
- 1.25mH
- Re
- 10Ω
- Sd
- 220cm²
- Mms
- 22g
- Qes
- 0.29
- Qms
- 5.2
- Qts
- 0.27
- SPL
- 94.8dB
- Vas
- 17.5L
- Xmax
- 6mm
- Power
- 200W
- Impedance
- 16Ω
- Flux density
- 1.45T
- Sensitivity
- 97dB
- Low limit
- 70Hz
- Nominal power
- 200W
- Calculated sensitivity †
- 94.8dB
- High limit
- 4000Hz
- Manufacturer sensitivity
- 97dB
- Min. impedance
- 11.6Ω
- Voice coil
- 51mm
- Weight
- 2.6kg
- Diameter
- 225mm
- Depth
- 95mm
- Cutout
- 187mm
- Bolt circle
- 210mm
- Bl
- 17.8 Tm
- Fs
- 68 Hz
- Le
- 1.25 mH
- Re
- 10 Ω
- Sd
- 220 cm² (34.1 in²)
- Ebp
- 234 Hz
- Mms
- 22 g
- Qes
- 0.29
- Qms
- 5.2
- Qts
- 0.27
- Vas
- 17.5 dm³ (0.62 ft³)
- Η0
- 1.5 %
- Cone
- RCK008MDN5116
- Xmax
- 6 mm
- Xvar
- 6 mm
- Depth
- 95 mm (3.74 in)
- Spider
- Single
- Cone shape
- Exponential
- Net weight
- 2.6 kg (5.73 lb)
- Pole design
- T-Pole
- Sensitivity
- 97 dB
- Flux density
- 1.45 T
- Shipping box
- 255x255x150 mm (10.04x10.04x5.91 in)
- Winding depth
- 16 mm (0.65 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Kapton
- Frequency range
- 70 Hz - 4000 Hz
- Magnet material
- Neodymium Ring
- Shipping weight
- 3.05 kg (6.72 lb)
- Nominal diameter
- 200 mm (8 in)
- Overall diameter
- 225 mm (8.8 in)
- Winding material
- Aluminium
- Minimum impedance
- 11.6 Ω
- Nominal impedance
- 16 Ω
- Magnetic gap depth
- 8 mm (0.31 in)
- Voice coil diameter
- 51 mm (2 in)
- Bolt circle diameter
- 210 mm (8.3 in)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 187 mm (7.4 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
- 1.1 dm³ (0.04 ft³)
B&C’s design
From the maker, with plans to download
03
Compare
Same-size drivers, compared with the 8MDN51. Clear differences are green when better and red when worse.
This driver8MDN51
Best price
£136.46
Fs
68 Hz
Qts
0.27
Vas
17.5 L
BL
17.8 T·m
Xmax
6 mm
Sensitivity
94.8 dB
Power
200 W
REDCATT8FIND
£58.44 · 57% less, betterFs70 Hz –
Qts0.25 −7%
Vas18.2 L +4%
BL14.3 T·m −20%, worse
Xmax2.2 mm −63%, worse
Sensitivity96 dB +1.2
Beyma8WRS300
£75.85 · 44% less, betterFs65 Hz −4%
Qts0.28 +4%
Vas15 L −14%, better
BL15.2 T·m −15%, worse
Xmax6 mm –
Sensitivity93.4 dB −1.4
Sica8 FE 2.5 CP
£83.85 · 39% less, betterFs73 Hz +7%
Qts0.28 +4%
Vas15.6 L −11%, better
BL13.0 T·m −27%, worse
Xmax4 mm −33%, worse
Sensitivity95.1 dB –
Beyma8WR300
£91.09 · 33% less, betterFs65 Hz −4%
Qts0.27 –
Vas15 L −14%, better
BL15.5 T·m −13%, worse
Xmax6 mm –
Sensitivity93.6 dB −1.2
FaitalPRO8PR210
£100.24 · 27% less, betterFs65 Hz −4%
Qts0.29 +7%
Vas15.4 L −12%, better
BL13.5 T·m −24%, worse
Xmax6.9 mm +15%, better
Sensitivity93.2 dB −1.6
B&C8FG64
£106.72 · 22% less, betterFs51 Hz −25%, better
Qts0.31 +15%, worse
Vas15 L −14%, better
BL15.8 T·m −11%, worse
Xmax7 mm +17%, better
Sensitivity90 dB −4.8, worse
B&C8FW51
£116.03 · 15% less, betterFs74 Hz +9%
Qts0.21 −22%, better
Vas12 L −31%, better
BL17.7 T·m –
Xmax6 mm –
Sensitivity95.7 dB +0.9
MonacorSPH-225C
£130.43 · 4% lessFs39 Hz −43%, better
Qts0.30 +11%, worse
Vas24 L +37%, worse
BL13.2 T·m −26%, worse
Xmax6 mm –
Sensitivity88.6 dB −6.2, worse
Eighteen Sound8NW650
£138.53 · 2% moreFs62 Hz −9%
Qts0.25 −7%
Vas19.0 L +9%
BL19.1 T·m +7%
Xmax5.5 mm −8%
Sensitivity94.4 dB –
CelestionFTX0820
£139.00 · 2% moreFs79 Hz +16%, worse
Qts0.28 +3%
Vas13.1 L −25%, better
BL14.6 T·m −18%, worse
Xmax4 mm −33%, worse
Sensitivity95.2 dB –
LavoceWAN082.02
£148.73 · 9% more, worseFs80 Hz +18%, worse
Qts0.23 −15%, better
Vas9.0 L −49%, better
BL17.8 T·m –
Xmax5.8 mm −3%
Sensitivity94.7 dB –
RCFMB8N251
£150.76 · 10% more, worseFs68 Hz –
Qts0.25 −7%
Vas13 L −26%, better
BL15.2 T·m −15%, worse
Xmax5 mm −17%, worse
Sensitivity94 dB −0.8
WavecorWF182BD13
£159.76 · 17% more, worseFs38 Hz −44%, better
Qts0.26 −4%
Vas20.8 L +19%, worse
BL6.9 T·m −61%, worse
Xmax5.5 mm −8%
Sensitivity88.3 dB −6.5, worse
Sica8 K 3 PL
£160.07 · 17% more, worseFs68 Hz –
Qts0.25 −7%
Vas12.2 L −30%, better
BL16.1 T·m −10%
Xmax5 mm −17%, worse
Sensitivity93.6 dB −1.2
MonacorFTX0820/8
£163.03 · 19% more, worseFs79 Hz +16%, worse
Qts0.28 +3%
Vas13.1 L −25%, better
BL14.6 T·m −18%, worse
Xmax4 mm −33%, worse
Sensitivity95.2 dB –
Beyma8MC300ND
£177.87 · 30% more, worseFs62 Hz −9%
Qts0.22 −19%, better
Vas18 L –
BL16 T·m −10%, worse
Xmax6 mm –
Sensitivity94.6 dB –
B&C8CXN51
£225.53 · 65% more, worseFs68 Hz –
Qts0.27 –
Vas17 L –
BL12.6 T·m −29%, worse
Xmax6 mm –
Sensitivity94.7 dB –
FaitalPRO8HX230
£236.30 · 73% more, worseFs70 Hz –
Qts0.29 +7%
Vas14.7 L −16%, better
BL15 T·m −16%, worse
Xmax6.2 mm –
Sensitivity94.1 dB −0.7
FaitalPRO8HX200
£252.39 · 85% more, worseFs76 Hz +12%, worse
Qts0.30 +11%, worse
Vas13.1 L −25%, better
BL13.8 T·m −22%, worse
Xmax4.9 mm −18%, worse
Sensitivity94.7 dB –
FaitalPRO8HX240
£282.04 · 107% more, worseFs70 Hz –
Qts0.30 +11%, worse
Vas12.9 L −26%, better
BL13.8 T·m −22%, worse
Xmax6.2 mm –
Sensitivity93.6 dB −1.2
Beyma8CX300ND
£321.98 · 136% more, worseFs61 Hz −10%, better
Qts0.29 +7%
Vas23 L +31%, worse
BL12 T·m −33%, worse
Xmax6 mm –
Sensitivity94.4 dB –
LavoceCAN082.00K
No current priceFs72 Hz +6%
Qts0.27 –
Vas15.1 L −14%, better
BL13.2 T·m −26%, worse
Xmax6.7 mm +12%, better
Sensitivity94.8 dB –
B&C8CLA64
No current priceFs71 Hz +4%
Qts0.24 −11%, better
Vas12.5 L −29%, better
BL16.4 T·m −8%
Xmax5.3 mm −12%, worse
Sensitivity94.6 dB –
Sica8 CX 2.5 PL P
No current priceFs74 Hz +9%
Qts0.28 +4%
Vas16.2 L −7%
BL12.3 T·m −31%, worse
Xmax5 mm −17%, worse
Sensitivity95.1 dB –
REDCATT81NPM-2
No current priceFs69 Hz –
Qts0.28 +4%
Vas10.3 L −41%, better
BL19.3 T·m +8%
Xmax4.0 mm −33%, worse
Sensitivity92.7 dB −2.1, worse
Oberton8NB201
No current priceFs71 Hz +4%
Qts0.24 −9%
Vas12.5 L −28%, better
BL14.4 T·m −19%, worse
Xmax5.3 mm −13%, worse
Sensitivity94.4 dB –
REDCATT81NPM-1
No current priceFs72 Hz +6%
Qts0.33 +22%, worse
Vas10.3 L −41%, better
BL16.7 T·m −6%
Xmax6 mm –
Sensitivity92.6 dB −2.2, worse
CelestionNTR08-2009D
No current priceFs71 Hz +5%
Qts0.21 −22%, better
Vas11.7 L −33%, better
BL18.0 T·m –
Xmax6.5 mm +8%
Sensitivity94.6 dB –
Tang BandW8-740P
No current priceFs30 Hz −56%, better
Qts0.28 +4%
Vas20.0 L +14%, worse
BL13.7 T·m −23%, worse
Xmax12.1 mm +102%, better
Sensitivity84.4 dB −10.4, worse
PRV Audio8MR600X-NDY
No current priceFs88 Hz +29%, worse
Qts0.29 +7%
Vas12.6 L −28%, better
BL15.2 T·m −15%, worse
Xmax3.8 mm −38%, worse
Sensitivity96.5 dB +1.7
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 | £136.46, the lowest price | In stock | Visit shop at JP Leisure | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £136.46 | In stock | Visit shop at JP Leisure | |
Blue Aran 3-5 months | £143.84 | 5.4% above the lowest price | Usually available in 3-5 months | Visit shop at Blue Aran |
Parts Express Import VAT and duty may apply | £167.59 | 23% above the lowest price | Back order | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 23 JunJP Leisure£133.69 → £136.46Up 2.1% from £133.69
- 23 JunBlue Aran£143.90 → £143.84Down <0.1% from £143.90
- 5 JunBlue Aran£136.03 → £143.90Up 5.8% from £136.03