- Fs
- 63Hz
- Xmax
- 5.5mm
- SPL
- 94dB
- Pe
- 300W
- BL
- 15.2T·m
- Vd
- 127cm³
- Qts
- 0.25
- 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 1 trace
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
117 plotted pointsMedium confidence249 selected pixels of 249
Published graphs
Eighteen Sound 8NW650 is an 8-inch 8 ohm LF driver rated at 300 W RMS. The validated T/S data includes Fs 63 Hz, Qts 0.25, Vas 17.8 L, Xmax 5.5 mm, sensitivity 94.2 dB, plus 127 cm³ Vd and 233 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 £138.53.
The published T/S values agree with each other
Thiele/Small
- Fs
- 63Hz
- Qts
- 0.25
- Qes
- 0.27
- Qms
- 3.7
- Vas
- 17.8L
- Re
- 6.1Ω
- Le
- 0.71mH
Motor and cone
- BL
- 15.2T·m
- Sd
- 230cm²
- Mms
- 26g
- Xmax
- 5.5mm
- Vd †
- 127cm³
Power and response
- Sensitivity †
- 94.2dB
- Manufacturer sensitivity
- 96dB
- Power
- 300W
- Nominal power
- 300W
- Impedance
- 8Ω
- Range
- 55–6300Hz
- EBP †
- 233 · Leans vented
Size and mounting
- Diameter
- 210mm
- Cutout
- 185mm
- Bolt circle
- 195mm
- Depth
- 111mm
- Weight
- 2.4kg
Other published values
- Power Program
- 600
Sensitivity shows 94.2 dB, calculated from the T/S values. Eighteen Sound publishes 96.0 dB, 1.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 8″
- BL
- 15.2T·m
- Fs
- 63Hz
- Le
- 0.71mH
- Re
- 6.1Ω
- Sd
- 230cm²
- Mms
- 26g
- Qes
- 0.27
- Qms
- 3.7
- Qts
- 0.25
- SPL
- 94.2dB
- Vas
- 17.8L
- Xmax
- 5.5mm
- Power
- 300W
- Impedance
- 8Ω
- Sensitivity
- 96dB
- Low limit
- 55Hz
- Nominal power
- 300W
- Power Program
- 600
- Calculated sensitivity †
- 94.2dB
- High limit
- 6300Hz
- Manufacturer sensitivity
- 96dB
- Weight
- 2.4kg
- Diameter
- 210mm
- Depth
- 111mm
- Cutout
- 185mm
- Bolt circle
- 195mm
02
Designs
Eighteen Sound’s design
From the maker, with plans to download
03
Compare
Same-size drivers, compared with the 8NW650. Clear differences are green when better and red when worse.
This driver8NW650
Best price
£138.53
Fs
63 Hz
Qts
0.25
Vas
17.8 L
BL
15.2 T·m
Xmax
5.5 mm
Sensitivity
94.2 dB
Power
300 W
REDCATT8FIND
£57.77 · 58% less, betterFs70 Hz +11%, worse
Qts0.25 –
Vas18.2 L –
BL14.3 T·m −6%
Xmax2.2 mm −60%, worse
Sensitivity96 dB +1.8
Beyma8WRS300
£75.41 · 46% less, betterFs65 Hz +3%
Qts0.28 +12%, worse
Vas15 L −16%, better
BL15.2 T·m –
Xmax6 mm +9%
Sensitivity93.4 dB −0.8
Sica8 FE 2.5 CP
£82.89 · 40% less, betterFs73 Hz +16%, worse
Qts0.28 +12%, worse
Vas15.6 L −12%, better
BL13.0 T·m −14%, worse
Xmax4 mm −27%, worse
Sensitivity95.1 dB +0.9
Beyma8WR300
£90.05 · 35% less, betterFs65 Hz +3%
Qts0.27 +8%
Vas15 L −16%, better
BL15.5 T·m –
Xmax6 mm +9%
Sensitivity93.6 dB −0.6
B&C8FMB51
£91.27 · 34% less, betterFs67 Hz +6%
Qts0.28 +12%, worse
Vas20.7 L +16%, worse
BL11.3 T·m −26%, worse
Xmax5.5 mm –
Sensitivity95.1 dB +0.9
Eighteen Sound8M400F
£114.19 · 18% less, betterFs89 Hz +41%, worse
Qts0.26 +4%
Vas13.7 L −23%, better
BL13.1 T·m −14%, worse
Xmax3 mm −45%, worse
Sensitivity97.4 dB +3.2, better
B&C8NDL64
£120.57 · 13% less, betterFs80 Hz +27%, worse
Qts0.25 –
Vas9.6 L −46%, better
BL17.5 T·m +15%, better
Xmax4.5 mm −18%, worse
Sensitivity95 dB +0.8
B&C8MDN51
£136.46 · 1% lessFs70 Hz +11%, worse
Qts0.20 −20%, better
Vas16 L −10%, better
BL15.3 T·m –
Xmax6 mm +9%
Sensitivity96.2 dB +2, better
CelestionFTX0820
£139.00 · Same priceFs79 Hz +25%, worse
Qts0.28 +12%, worse
Vas13.1 L −26%, better
BL14.6 T·m −4%
Xmax4 mm −27%, worse
Sensitivity95.2 dB +1
LavoceWAN082.02
£147.03 · 6% more, worseFs80 Hz +27%, worse
Qts0.23 −8%
Vas9.0 L −50%, better
BL17.8 T·m +17%, better
Xmax5.8 mm +5%
Sensitivity94.7 dB +0.5
RCFMB8N251
£149.04 · 8% more, worseFs68 Hz +8%
Qts0.25 –
Vas13 L −27%, better
BL15.2 T·m –
Xmax5 mm −9%
Sensitivity94 dB –
WavecorWF182BD13
£157.84 · 14% more, worseFs38 Hz −40%, better
Qts0.26 +4%
Vas20.8 L +17%, worse
BL6.9 T·m −55%, worse
Xmax5.5 mm –
Sensitivity88.3 dB −5.9, worse
Sica8 K 3 PL
£158.25 · 14% more, worseFs68 Hz +8%
Qts0.25 –
Vas12.2 L −31%, better
BL16.1 T·m +6%
Xmax5 mm −9%
Sensitivity93.6 dB −0.6
Beyma8MC300ND
£175.84 · 27% more, worseFs62 Hz –
Qts0.22 −12%, better
Vas18 L –
BL16 T·m +5%
Xmax6 mm +9%
Sensitivity94.6 dB –
WavecorWF211PA02
£185.52 · 34% more, worseFs59 Hz −6%
Qts0.25 –
Vas18.2 L –
BL13.4 T·m −12%, worse
Xmax2 mm −64%, worse
Sensitivity93.6 dB −0.6
B&C8CXN51
£224.40 · 62% more, worseFs68 Hz +8%
Qts0.27 +8%
Vas17 L −4%
BL12.6 T·m −17%, worse
Xmax6 mm +9%
Sensitivity94.7 dB +0.5
FaitalPRO8HX200
£225.24 · 63% more, worseFs76 Hz +21%, worse
Qts0.30 +20%, worse
Vas13.1 L −26%, better
BL13.8 T·m −9%
Xmax4.9 mm −11%, worse
Sensitivity94.7 dB +0.5
FaitalPRO8HX230
£233.61 · 69% more, worseFs70 Hz +11%, worse
Qts0.29 +16%, worse
Vas14.7 L −17%, better
BL15 T·m –
Xmax6.2 mm +12%, better
Sensitivity94.1 dB –
FaitalPRO8HX240
£278.82 · 101% more, worseFs70 Hz +11%, worse
Qts0.30 +20%, worse
Vas12.9 L −28%, better
BL13.8 T·m −9%
Xmax6.2 mm +12%, better
Sensitivity93.6 dB −0.6
AccutonC173-6-096
£837.27 · 504% more, worseFs50 Hz −21%, better
Qts0.22 −12%, better
Vas17.0 L −5%
BL11.4 T·m −25%, worse
Xmax5 mm −9%
Sensitivity91.5 dB −2.7, worse
AccutonS220-6-222
£912.00 · 558% more, worseFs25 Hz −60%, better
Qts0.26 +4%
Vas89.7 L +404%, worse
BL10.9 T·m −28%, worse
Xmax5.3 mm −5%
Sensitivity89.2 dB −5, worse
AccutonC220-6-222
£941.40 · 580% more, worseFs30 Hz −53%, better
Qts0.26 +4%
Vas74 L +316%, worse
BL11.7 T·m −23%, worse
Xmax6 mm +9%
Sensitivity90.5 dB −3.7, worse
Oberton8NB201
No current priceFs71 Hz +12%, worse
Qts0.24 –
Vas12.5 L −30%, better
BL14.4 T·m −5%
Xmax5.3 mm −5%
Sensitivity94.4 dB –
B&C8CLA64
No current priceFs71 Hz +13%, worse
Qts0.24 −4%
Vas12.5 L −30%, better
BL16.4 T·m +8%
Xmax5.3 mm −4%
Sensitivity94.6 dB –
Oberton8NMB250V4
No current priceFs82 Hz +30%, worse
Qts0.26 +3%
Vas10.9 L −39%, better
BL14.3 T·m −6%
Xmax4.5 mm −18%, worse
Sensitivity95.5 dB +1.3
WavecorWF182BD14
No current priceFs36 Hz −43%, better
Qts0.25 –
Vas23 L +29%, worse
BL6.9 T·m −55%, worse
Xmax5.5 mm –
Sensitivity88.2 dB −6, worse
Acoustic EleganceTD8M-8
No current priceFs76 Hz +20%, worse
Qts0.26 +4%
Vas11.3 L −37%, better
BL15.5 T·m –
Xmax3 mm −45%, worse
Sensitivity94.6 dB –
Sica8 CX 2.5 PL P
No current priceFs74 Hz +17%, worse
Qts0.28 +12%, worse
Vas16.2 L −9%
BL12.3 T·m −19%, worse
Xmax5 mm −9%
Sensitivity95.1 dB +0.9
LavoceCAN082.00K
No current priceFs72 Hz +14%, worse
Qts0.27 +8%
Vas15.1 L −15%, better
BL13.2 T·m −13%, worse
Xmax6.7 mm +22%, better
Sensitivity94.8 dB +0.6
WavecorWF182BD04
No current priceFs34 Hz −46%, better
Qts0.25 –
Vas32.4 L +82%, worse
BL6.8 T·m −56%, worse
Xmax5.5 mm –
Sensitivity88.9 dB −5.3, 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 |
|---|---|---|---|---|
Lean Business | £138.53, the lowest price | Stock not listed | Visit shop at Lean Business | |
Lean Audio | £138.53 | Back order | Visit shop at Lean Audio |
Best price over time
Tracked since 1 Apr