Eighteen Sound design
Manifolded 2x18” band-pass subwoofer
- Drivers
- 18NLW960118NLW9600
18-inch LF driver · 1,800 W
Eighteen Sound 18NLW9601 8Ω
30–2300 Hz
- Fs
- 39Hz
- Xmax
- 14mm
- SPL
- 96dB
- Pe
- 1800W
- BL
- 31T·m
- Vd
- 1582cm³
- Qts
- 0.28
- Vas
- 120L
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/v1
frequency response
Frequency response
113 plotted pointsMedium confidence700 selected pixels of 1,354 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence875 selected pixels of 1,192
Published graphs
Eighteen Sound 18NLW9601 is an 18-inch 8 ohm LF driver rated at 1800 W RMS. The validated T/S data includes Fs 39 Hz, Qts 0.28, Vas 120 L, Xmax 14 mm, sensitivity 95.8 dB, plus 1582 cm³ Vd and 130 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 £543.41.
The published T/S values agree with each other
Thiele/Small
- Fs
- 39Hz
- Qts
- 0.28
- Qes
- 0.30
- Qms
- 5.7
- Vas
- 120L
- Re
- 4.7Ω
- Le
- 2.19mH
Motor and cone
- BL
- 31T·m
- Sd
- 1130cm²
- Mms
- 275g
- Xmax
- 14mm
- Vd †
- 1582cm³
Power and response
- Sensitivity †
- 95.8dB
- Manufacturer sensitivity
- 96dB
- Power
- 1800W
- Nominal power
- 1800W
- Impedance
- 8Ω
- Range
- 30–2300Hz
- EBP †
- 130 · Leans vented
Size and mounting
- Diameter
- 462mm
- Cutout
- 416mm
- Bolt circle
- 440mm
- Depth
- 236mm
- Weight
- 12.8kg
Other published values
- Power Program
- 3600
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 18″
- BL
- 31T·m
- Fs
- 39Hz
- Le
- 2.19mH
- Re
- 4.7Ω
- Sd
- 1130cm²
- Mms
- 275g
- Qes
- 0.30
- Qms
- 5.7
- Qts
- 0.28
- SPL
- 95.8dB
- Vas
- 120L
- Xmax
- 14mm
- Power
- 1800W
- Impedance
- 8Ω
- Sensitivity
- 96dB
- Low limit
- 30Hz
- Nominal power
- 1800W
- Power Program
- 3600
- Calculated sensitivity †
- 95.8dB
- High limit
- 2300Hz
- Manufacturer sensitivity
- 96dB
- Weight
- 12.8kg
- Diameter
- 462mm
- Depth
- 236mm
- Cutout
- 416mm
- Bolt circle
- 440mm
02
Designs
Cabinets for the 18NLW9601: a design and a suggested box from Eighteen Sound.
All 18NLW9601 designsHow we find designsEighteen Sound’s design
From the maker, with plans to download
Eighteen Sound’s suggested box
From Eighteen Sound’s 18NLW9601 page
- Net volume
- 200L
- Tuning
- 40Hz
Eighteen Sound gives the volume and tuning; the port is sized for the driver when you open it.
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 18NLW9601. Clear differences are green when better and red when worse.
This driver18NLW9601
Best price
£543.41
Fs
39 Hz
Qts
0.28
Vas
120 L
BL
31 T·m
Xmax
14 mm
Sensitivity
95.8 dB
Power
1800 W
Oberton18XB1301DS
£284.15 · 48% less, betterFs36 Hz −8%
Qts0.30 +8%
Vas172.9 L +44%, worse
BL26.9 T·m −13%, worse
Xmax12 mm −14%, worse
Sensitivity96 dB –
RCFLF18X401
£289.00 · 47% less, betterFs30 Hz −23%, better
Qts0.30 +7%
Vas274 L +128%, worse
BL26.5 T·m −15%, worse
Xmax12 mm −14%, worse
Sensitivity95.8 dB –
Eighteen Sound18LW2600
£297.25 · 45% less, betterFs31 Hz −21%, better
Qts0.29 +4%
Vas187 L +56%, worse
BL31 T·m –
Xmax14.8 mm +6%
Sensitivity94.7 dB −1.1
RCFLF18N405
£325.54 · 40% less, betterFs30 Hz −23%, better
Qts0.32 +14%, worse
Vas227 L +89%, worse
BL26.5 T·m −15%, worse
Xmax14 mm –
Sensitivity94.6 dB −1.2
SB AudienceNERO-18SW1100D
£334.88 · 38% less, betterFs36 Hz −8%
Qts0.33 +18%, worse
Vas153.1 L +28%, worse
BL30.9 T·m –
Xmax12.2 mm −13%, worse
Sensitivity95.3 dB −0.5
B&C18DS100
£346.65 · 36% less, betterFs34 Hz −13%, better
Qts0.29 +4%
Vas155 L +29%, worse
BL30 T·m −3%
Xmax14.5 mm +4%
Sensitivity95.1 dB −0.7
RCFLF18X451
£360.00 · 34% less, betterFs30 Hz −23%, better
Qts0.28 –
Vas220 L +83%, worse
BL30.5 T·m –
Xmax14 mm –
Sensitivity95.1 dB −0.7
CelestionTSQ1845
£380.98 · 30% less, betterFs35 Hz −10%, better
Qts0.29 +4%
Vas119.3 L –
BL33.8 T·m +9%
Xmax15 mm +7%
Sensitivity94.3 dB −1.5
Oberton18XB1600V2
£388.58 · 28% less, betterFs33 Hz −17%, better
Qts0.28 –
Vas267 L +123%, worse
BL29.6 T·m −5%
Xmax12.5 mm −11%, worse
Sensitivity97.1 dB +1.3
Precision DevicesPD.1852/2
£397.00 · 27% less, betterFs42 Hz +7%
Qts0.33 +18%, worse
Vas120.4 L –
BL30.5 T·m –
Xmax12 mm −14%, worse
Sensitivity96.2 dB –
CelestionCF18VJD
£399.00 · 27% less, betterFs35 Hz −12%, better
Qts0.31 +10%, worse
Vas145.8 L +22%, worse
BL32.6 T·m +5%
Xmax12 mm −14%, worse
Sensitivity94.6 dB −1.2
FaitalPRO18XL2000
£420.00 · 23% less, betterFs28 Hz −28%, better
Qts0.27 −4%
Vas232.1 L +93%, worse
BL30.8 T·m –
Xmax16.3 mm +17%, better
Sensitivity94.6 dB −1.2
B&C18SW115
£430.38 · 21% less, betterFs32 Hz −18%, better
Qts0.30 +7%
Vas187 L +56%, worse
BL30.3 T·m –
Xmax14 mm –
Sensitivity94.9 dB −0.9
Eighteen Sound18NLW4500
£468.89 · 14% less, betterFs35 Hz −10%, better
Qts0.33 +18%, worse
Vas151 L +26%, worse
BL30.3 T·m –
Xmax15.3 mm +9%
Sensitivity94.8 dB −1
FaitalPRO18XL1700
£469.00 · 14% less, betterFs28 Hz −28%, better
Qts0.28 –
Vas227 L +89%, worse
BL30.5 T·m –
Xmax16.2 mm +16%, better
Sensitivity94.4 dB −1.4
Eighteen Sound18NLW9000
£550.00 · 1% moreFs34 Hz −13%, better
Qts0.31 +11%, worse
Vas206 L +72%, worse
BL28 T·m −10%
Xmax14 mm –
Sensitivity96.1 dB –
B&C18HTX100
£809.86 · 49% more, worseFs44 Hz +13%, worse
Qts0.32 +14%, worse
Vas173 L +44%, worse
BL26.3 T·m −15%, worse
Xmax13 mm −7%
Sensitivity98.4 dB +2.6, better
Oberton18NXB1601
No current priceFs35 Hz −11%, better
Qts0.29 –
Vas146.2 L +22%, worse
BL30.5 T·m –
Xmax12.5 mm −11%, worse
Sensitivity95.1 dB −0.7
Precision DevicesPD.185NR1
No current priceFs34 Hz −13%, better
Qts0.27 −4%
Vas102 L −15%, better
BL29.5 T·m −5%
Xmax11.8 mm −16%, worse
Sensitivity93.4 dB −2.4, worse
VAS Audio18-1700NC
No current priceFs32 Hz −18%, better
Qts0.28 –
Vas178 L +48%, worse
BL34.4 T·m +11%, better
Xmax13.5 mm −4%
Sensitivity95.1 dB −0.7
VAS Audio18-1700FC
No current priceFs33 Hz −15%, better
Qts0.29 +5%
Vas181 L +51%, worse
BL33 T·m +6%
Xmax13.5 mm −4%
Sensitivity95.4 dB –
Oberton18NXB1200
No current priceFs36 Hz −8%
Qts0.28 –
Vas159.6 L +33%, worse
BL29.4 T·m −5%
Xmax11.5 mm −18%, worse
Sensitivity96 dB –
Oberton18NXB1600
No current priceFs32 Hz −17%, better
Qts0.30 +8%
Vas173.1 L +44%, worse
BL29.6 T·m −5%
Xmax13.5 mm −4%
Sensitivity94.5 dB −1.3
Eighteen Sound18LW2500
No current priceFs34 Hz −13%, better
Qts0.33 +18%, worse
Vas135 L +13%, worse
BL30 T·m −3%
Xmax15 mm +7%
Sensitivity94 dB −1.8
Eighteen Sound18NLW4000
No current priceFs34 Hz −13%, better
Qts0.33 +18%, worse
Vas135 L +13%, worse
BL30 T·m −3%
Xmax15 mm +7%
Sensitivity94 dB −1.8
Precision DevicesPD.184NR1
No current priceFs38 Hz –
Qts0.27 −4%
Vas102 L −15%, better
BL29.5 T·m −5%
Xmax8.5 mm −39%, worse
Sensitivity94.9 dB −0.9
Eighteen Sound18NLW9601C
No current priceFs38 Hz –
Qts0.34 +21%, worse
Vas99 L −18%, better
BL31.7 T·m –
Xmax14 mm –
Sensitivity93.8 dB −2, worse
No photo
FaneIMPERIUM 18NDXL
No current priceFs33 Hz −15%, better
Qts0.29 +5%
Vas203 L +69%, worse
BL29.4 T·m −5%
Xmax12 mm −14%, worse
Sensitivity95.9 dB –
No photo
RCFLF18Y402
No current priceFs30 Hz −23%, better
Qts0.30 +7%
Vas274 L +128%, worse
BL26.5 T·m −15%, worse
Xmax12 mm −14%, worse
Sensitivity95.8 dB –
Eighteen Sound18ID
No current priceFs40 Hz –
Qts0.26 −7%
Vas67 L −44%, better
BL24 T·m −23%, worse
Xmax15.5 mm +11%, better
Sensitivity94 dB −1.8
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann5.0 out of 57 ratings · Checked 24 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 |
|---|---|---|---|---|
Lean Audio | £610.00, the lowest price | In stock | Visit shop at Lean Audio | |
Lean Business | £630.91 | 3.4% above the lowest price | Stock not listed | Visit shop at Lean Business |
Thomann | £643.00 | 5.4% above the lowest price | In stock | Visit shop at Thomann |
Best price over time
Tracked since 1 Apr
Recent changes
- 19 OctThomann£645.00 → £643.00Down 0.3% from £645.00
- 11 OctThomann£649.00 → £645.00Down 0.6% from £649.00
- 3 OctThomann£655.00 → £649.00Down 0.9% from £655.00