- Net volume
- 10L
- Tuning
- 85Hz
B&C gives the volume and tuning; the port is sized for the driver when you open it.
8-inch LF driver · 8NDL series · 64 mm voice coil · 350 W
B&C 8NDL64 8Ω
80–4000 Hz
- Fs
- 80Hz
- Xmax
- 4.5mm
- SPL
- 95dB
- Pe
- 350W
- BL
- 17.5T·m
- Vd
- 99cm³
- Qts
- 0.25
- Vas
- 10L
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 ddc3324e990b…Medium confidence9,270 selected pixels of 10,162 - Trace datasheet-response-trace-poc/v2
free-air impedance
Impedance response
240 plotted pointsSource file SHA-256 ddc3324e990b…Medium confidence5,557 selected pixels of 6,266
Published graphs
B&C 8NDL64 is an 8-inch 8 ohm LF driver rated at 350 W RMS. The validated T/S data includes Fs 80 Hz, Qts 0.25, Vas 9.6 L, Xmax 4.5 mm, sensitivity 95 dB, plus 99 cm³ Vd and 320 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 £122.23.
The published T/S values agree with each other
Thiele/Small
- Fs
- 80Hz
- Qts
- 0.25
- Qes
- 0.25
- Qms
- 10.9
- Vas
- 9.6L
- Re
- 5.4Ω
- Le
- 0.62mH
Motor and cone
- BL
- 17.5T·m
- Sd
- 220cm²
- Mms
- 28g
- Xmax
- 4.5mm
- Vd †
- 99cm³
- Voice coil
- 64mm
- Flux density
- 1.25T
Power and response
- Sensitivity †
- 95dB
- Manufacturer sensitivity
- 97dB
- Power
- 350W
- Nominal power
- 350W
- Impedance
- 8Ω
- Min. impedance
- 7.2Ω
- Range
- 80–4000Hz
- EBP †
- 320 · Leans vented
Size and mounting
- Diameter
- 225mm
- Cutout
- 187mm
- Bolt circle
- 210mm
- Depth
- 95mm
- Weight
- 2.6kg
Sensitivity shows 95.0 dB, calculated from the T/S values. B&C publishes 97.0 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else B&C lists
LF
- BL
- 17.5T·m
- Fs
- 80Hz
- Le
- 0.62mH
- Re
- 5.4Ω
- Sd
- 220cm²
- Mms
- 28g
- Qes
- 0.25
- Qms
- 10.9
- Qts
- 0.25
- SPL
- 95dB
- Vas
- 9.6L
- Xmax
- 4.5mm
- Power
- 350W
- Impedance
- 8Ω
- Flux density
- 1.25T
- Sensitivity
- 97dB
- Low limit
- 80Hz
- Nominal power
- 350W
- Calculated sensitivity †
- 95dB
- High limit
- 4000Hz
- Manufacturer sensitivity
- 97dB
- Min. impedance
- 7.2Ω
- Voice coil
- 64mm
- Weight
- 2.6kg
- Diameter
- 225mm
- Depth
- 95mm
- Cutout
- 187mm
- Bolt circle
- 210mm
- Bl
- 17.5 Tm
- Fs
- 80 Hz
- Le
- 0.62 mH
- Re
- 5.4 Ω
- Sd
- 220 cm² (34.1 in²)
- Ebp
- 320 Hz
- Mms
- 28 g
- Qes
- 0.25
- Qms
- 10.91
- Qts
- 0.25
- Vas
- 9.6 dm³ (0.34 ft³)
- Η0
- 1.88 %
- Cone
- RCK008NDL648
- Xmax
- 4.5 mm
- Xvar
- 5 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
- 1.25 T
- Shipping box
- 255x255x150 mm (10.04x10.04x5.91 in)
- Winding depth
- 14 mm (0.55 in)
- Shipping units
- 1 pcs
- Surround shape
- Double Roll
- Former material
- Glass Fibre
- Frequency range
- 80 Hz - 4000 Hz
- Magnet material
- Neodymium Inside Slug
- Shipping weight
- 3.05 kg (6.72 lb)
- Nominal diameter
- 200 mm (8 in)
- Overall diameter
- 225 mm (8.8 in)
- Winding material
- Copper
- Minimum impedance
- 7.2 Ω
- Nominal impedance
- 8 Ω
- Magnetic gap depth
- 8 mm (0.31 in)
- Recommended tuning
- 85 Hz
- Voice coil diameter
- 64 mm (2.5 in)
- Bolt circle diameter
- 210 mm (8.3 in)
- Recommended enclosure
- 10 dm³ (0.35 ft³)
- Woofer cone treatment
- WP Waterproof Front Side
- Baffle cutout diameter
- 187 mm (7.4 in)
- Nominal power handling
- 350 W
- Continuous power handling
- 700 W
- Flange and gasket thickness
- 10 mm (0.39 in)
- Air volume occupied by driver
- 1.5 dm³ (0.05 ft³)
B&C’s suggested box
From B&C’s 8NDL64 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 8NDL64. Clear differences are green when better and red when worse.
This driver8NDL64
Best price
£122.23
Fs
80 Hz
Qts
0.25
Vas
9.6 L
BL
17.5 T·m
Xmax
4.5 mm
Sensitivity
95 dB
Power
350 W
REDCATT8FIND
£58.57 · 52% less, betterFs70 Hz −13%, better
Qts0.25 –
Vas18.2 L +90%, worse
BL14.3 T·m −18%, worse
Xmax2.2 mm −51%, worse
Sensitivity96 dB +1
CIAREFXI8
£68.59 · 44% less, betterFs81 Hz –
Qts0.29 +16%, worse
Vas13 L +35%, worse
BL13.3 T·m −24%, worse
Xmax4.5 mm –
Sensitivity95.4 dB –
LavoceMAF082.00
£89.64 · 27% less, betterFs85 Hz +6%
Qts0.20 −20%, better
Vas11.3 L +18%, worse
BL17.2 T·m –
Xmax2.6 mm −42%, worse
Sensitivity97 dB +2, better
B&C8FW51
£116.29 · 5% lessFs74 Hz −8%
Qts0.21 −16%, better
Vas12 L +25%, worse
BL17.7 T·m –
Xmax6 mm +33%, better
Sensitivity95.7 dB +0.7
Eighteen Sound8NW650
£138.53 · 13% more, worseFs63 Hz −21%, better
Qts0.25 –
Vas17.8 L +85%, worse
BL15.2 T·m −13%, worse
Xmax5.5 mm +22%, better
Sensitivity94.2 dB −0.8
CelestionFTX0820
£139.00 · 14% more, worseFs79 Hz –
Qts0.28 +12%, worse
Vas13.1 L +37%, worse
BL14.6 T·m −17%, worse
Xmax4 mm −11%, worse
Sensitivity95.2 dB –
Eighteen Sound8NTLW2000
£139.21 · 14% more, worseFs71 Hz −11%, better
Qts0.21 −16%, better
Vas13 L +35%, worse
BL17.5 T·m –
Xmax4.4 mm –
Sensitivity95.5 dB +0.5
LavoceWAN082.02
£149.05 · 22% more, worseFs80 Hz –
Qts0.23 −8%
Vas9.0 L −7%
BL17.8 T·m –
Xmax5.8 mm +29%, better
Sensitivity94.7 dB –
Sica8 K 3 PL
£160.43 · 31% more, worseFs68 Hz −15%, better
Qts0.25 –
Vas12.2 L +27%, worse
BL16.1 T·m −8%
Xmax5 mm +11%, better
Sensitivity93.6 dB −1.4
MonacorFTX0820/8
£163.39 · 34% more, worseFs79 Hz –
Qts0.28 +12%, worse
Vas13.1 L +36%, worse
BL14.6 T·m −17%, worse
Xmax4 mm −11%, worse
Sensitivity95.2 dB –
BMS8N515
£171.89 · 41% more, worseFs88 Hz +10%
Qts0.30 +20%, worse
Vas11.0 L +15%, worse
BL13.8 T·m −21%, worse
Xmax4 mm −11%, worse
Sensitivity95.7 dB +0.7
Eighteen Sound8NMB750
£217.30 · 78% more, worseFs88 Hz +10%, worse
Qts0.27 +8%
Vas6.9 L −28%, better
BL18.7 T·m +7%
Xmax6.1 mm +36%, better
Sensitivity94.3 dB −0.7
BMS8CN552
£262.59 · 115% more, worseFs88 Hz +9%
Qts0.29 +16%, worse
Vas10.1 L +5%
BL13.4 T·m −23%, worse
Xmax4 mm −11%, worse
Sensitivity95.6 dB +0.6
Oberton8NMB250V4
No current priceFs82 Hz –
Qts0.26 +3%
Vas10.9 L +13%, worse
BL14.3 T·m −19%, worse
Xmax4.5 mm –
Sensitivity95.5 dB +0.5
Oberton8NM250V2
No current priceFs68 Hz −15%, better
Qts0.25 –
Vas8.4 L −13%, better
BL21.3 T·m +21%, better
Xmax4 mm −11%, worse
Sensitivity92.1 dB −2.9, worse
B&C8CLA64
No current priceFs71 Hz −11%, better
Qts0.24 −4%
Vas12.5 L +30%, worse
BL16.4 T·m −6%
Xmax5.3 mm +18%, better
Sensitivity94.6 dB –
RCFMB8N251
No current priceFs68 Hz −15%, better
Qts0.25 –
Vas13 L +35%, worse
BL15.2 T·m −13%, worse
Xmax5 mm +11%, better
Sensitivity94 dB −1
REDCATT81NPM-2
No current priceFs69 Hz −14%, better
Qts0.28 +12%, worse
Vas10.3 L +7%
BL19.3 T·m +10%, better
Xmax4.0 mm −10%, worse
Sensitivity92.7 dB −2.3, worse
Oberton8NB201
No current priceFs71 Hz −12%, better
Qts0.24 –
Vas12.5 L +31%, worse
BL14.4 T·m −18%, worse
Xmax5.3 mm +17%, better
Sensitivity94.4 dB −0.6
Eighteen Sound8NCX750
No current priceFs111 Hz +39%, worse
Qts0.26 +4%
Vas5.2 L −46%, better
BL20 T·m +14%, better
Xmax4 mm −11%, worse
Sensitivity96.2 dB +1.2
Acoustic EleganceTD8M-8
No current priceFs76 Hz −5%
Qts0.26 +4%
Vas11.3 L +18%, worse
BL15.5 T·m −11%, worse
Xmax3 mm −33%, worse
Sensitivity94.6 dB –
No photo
PHL Audio2510
No current priceFs72 Hz −10%, better
Qts0.24 −4%
Vas13.3 L +39%, worse
BL23 T·m +31%, better
Xmax4 mm −11%, worse
Sensitivity95 dB –
LavoceWAF082.01
No current priceFs76 Hz −5%
Qts0.21 −16%, better
Vas10.2 L +6%
BL17.9 T·m –
Xmax5.8 mm +29%, better
Sensitivity95.1 dB –
P.Audio8NX-65MB
No current priceFs80 Hz –
Qts0.29 +16%, worse
Vas8.2 L −15%, better
BL18 T·m –
Xmax3.8 mm −17%, worse
Sensitivity93.3 dB −1.7
CelestionNTR08-2009D
No current priceFs71 Hz −11%, better
Qts0.21 −16%, better
Vas11.7 L +21%, worse
BL18.0 T·m +3%
Xmax6.5 mm +44%, better
Sensitivity94.6 dB –
Oberton8MVCX (8NMB250VCX)
No current priceFs85 Hz +6%
Qts0.16 −34%, better
Vas10.7 L +11%, worse
BL17.8 T·m –
Xmax4.3 mm −6%
Sensitivity98 dB +3, better
No photo
PHL Audio2513NDU
No current priceFs70 Hz −13%, better
Qts0.23 −8%
Vas12.5 L +30%, worse
BL24 T·m +37%, better
Xmax4 mm −11%, worse
Sensitivity94.5 dB −0.5
Audio Technology18 H 52 06 13 SDKA-LR
No current priceFs32 Hz −60%, better
Qts0.25 –
Vas50 L +421%, worse
BL7.4 T·m −58%, worse
Xmax4 mm −11%, worse
Sensitivity89.9 dB −5.1, worse
PRV Audio8MR600X-NDY
No current priceFs88 Hz +9%
Qts0.29 +16%, worse
Vas12.6 L +31%, worse
BL15.2 T·m −13%, worse
Xmax3.8 mm −17%, worse
Sensitivity96.5 dB +1.5
REDCATT8NPM
No current priceFs79 Hz –
Qts0.29 +16%, worse
Vas10.9 L +14%, worse
BL14.2 T·m −19%, worse
Xmax3.7 mm −18%, worse
Sensitivity94.4 dB −0.6
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 52 ratings · Checked 7 Oct 2026Read reviews on Parts Express
- Thomann5.0 out of 51 rating · Checked 7 Oct 2026Read reviews on Thomann
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Blue Aran | £124.99, the lowest price | 2 in stock | Visit shop at Blue Aran | |
Thomann Not currently listed · Last seen 20 Apr 2026 | £123.00 | Stock not listed | Visit shop at Thomann | |
Thomann | £125.00 | In stock | Visit shop at Thomann | |
JP Leisure Not currently listed · Last seen 7 Aug 2026 | £127.16 | 1.7% above the lowest price | In stock | Visit shop at JP Leisure |
JP Leisure | £127.16 | 1.7% above the lowest price | In stock | Visit shop at JP Leisure |
Parts Express Import VAT and duty may apply | £154.56 | 24% above the lowest price | 12 in stock | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 4 OctThomann£127.00 → £125.00Down 1.6% from £127.00
- 26 SepThomann£126.00 → £127.00Up 0.8% from £126.00
- 24 JulThomann£125.00 → £126.00Up 0.8% from £125.00