Eighteen Sound design
Single 18” subwoofer
- Drivers
- 18TLW3000or 18LW2500or 18NLW4000or 18LW2400or 18LW1400
18-inch LF driver · 1,500 W
Eighteen Sound 18NLW4000 8Ω
8 Ω · 30–1800 Hz
No price for delivery to the UK
- Fs
- 34Hz
- Xmax
- 15mm
- SPL
- 94dB
- Pe
- 1500W
- BL
- 30T·m
- Vd
- 1695cm³
- Qts
- 0.33
- Vas
- 135L
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
frequency response
Frequency response
151 plotted pointsSource file SHA-256 40f6fde9aa17…Medium confidence682 selected pixels of 1,489 - Trace datasheet-response-trace-poc/v2
impedance
Impedance response
240 plotted pointsSource file SHA-256 40f6fde9aa17…Medium confidence977 selected pixels of 1,355
Published graphs
Eighteen Sound 18NLW4000 is an 18-inch 8 ohm LF driver rated at 1500 W RMS. The validated T/S data includes Fs 34 Hz, Qts 0.33, Vas 135 L, Xmax 15 mm, sensitivity 94 dB, plus 1695 cm³ Vd and 100 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 34Hz
- Qts
- 0.33
- Qes
- 0.34
- Qms
- 22
- Vas
- 135L
- Re
- 4.9Ω
- Le
- 2.80mH
Motor and cone
- BL
- 30T·m
- Sd
- 1130cm²
- Mms
- 290g
- Xmax
- 15mm
- Vd †
- 1695cm³
Power and response
- Sensitivity †
- 94dB
- Manufacturer sensitivity
- 96dB
- Power
- 1500W
- Nominal power
- 1500W
- Impedance
- 8Ω
- Range
- 30–1800Hz
- EBP †
- 100 · Sealed or vented
Size and mounting
- Diameter
- 462mm
- Cutout
- 416mm
- Bolt circle
- 440mm
- Depth
- 227mm
- Weight
- 9.8kg
Other published values
- Power Program
- 3200
Sensitivity shows 94.0 dB, calculated from the T/S values. Eighteen Sound publishes 96.0 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 18″
- BL
- 30T·m
- Fs
- 34Hz
- Le
- 2.80mH
- Re
- 4.9Ω
- Sd
- 1130cm²
- Mms
- 290g
- Qes
- 0.34
- Qms
- 22
- Qts
- 0.33
- SPL
- 94dB
- Vas
- 135L
- Xmax
- 15mm
- Power
- 1500W
- Impedance
- 8Ω
- Sensitivity
- 96dB
- Low limit
- 30Hz
- Nominal power
- 1500W
- Power Program
- 3200
- Calculated sensitivity †
- 94dB
- High limit
- 1800Hz
- Manufacturer sensitivity
- 96dB
- Weight
- 9.8kg
- Diameter
- 462mm
- Depth
- 227mm
- Cutout
- 416mm
- Bolt circle
- 440mm
02
Designs
Cabinets for the 18NLW4000: a design and a suggested box from Eighteen Sound.
All 18NLW4000 designsHow we find designsEighteen Sound’s design
From the maker, with plans to download
Eighteen Sound’s suggested box
From Eighteen Sound’s 18NLW4000 page
- Net volume
- 160L
- Tuning
- 35Hz
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 18NLW4000. Clear differences are green when better and red when worse.
This driver18NLW4000
Best price
–
Fs
34 Hz
Qts
0.33
Vas
135 L
BL
30 T·m
Xmax
15 mm
Sensitivity
94 dB
Power
1500 W
Eighteen Sound18LW2600
£299.91Fs31 Hz −9%
Qts0.29 −12%, better
Vas187 L +39%, worse
BL31 T·m +3%
Xmax14.8 mm –
Sensitivity94.7 dB +0.7
RCFLF18N405
£325.54Fs30 Hz −12%, better
Qts0.32 −3%
Vas227 L +68%, worse
BL26.5 T·m −12%, worse
Xmax14 mm −7%
Sensitivity94.6 dB +0.6
SB AudienceNERO-18SW1100D
£337.88Fs36 Hz +6%
Qts0.33 –
Vas153.1 L +13%, worse
BL30.9 T·m –
Xmax12.2 mm −19%, worse
Sensitivity95.3 dB +1.3
B&C18DS100
£349.75Fs34 Hz –
Qts0.29 −12%, better
Vas155 L +15%, worse
BL30 T·m –
Xmax14.5 mm −3%
Sensitivity95.1 dB +1.1
Eighteen Sound18NLW4100
£375.10Fs31 Hz −9%
Qts0.34 +3%
Vas180 L +33%, worse
BL29 T·m −3%
Xmax15 mm –
Sensitivity93.9 dB –
CelestionTSQ1845
£384.39Fs35 Hz –
Qts0.29 −12%, better
Vas119.3 L −12%, better
BL33.8 T·m +13%, better
Xmax15 mm –
Sensitivity94.3 dB –
CelestionCF18VJD
£399.00Fs35 Hz –
Qts0.31 −6%
Vas145.8 L +8%
BL32.6 T·m +9%
Xmax12 mm −20%, worse
Sensitivity94.6 dB +0.6
B&C18SW115
£434.23Fs32 Hz −6%
Qts0.30 −9%
Vas187 L +39%, worse
BL30.3 T·m –
Xmax14 mm −7%
Sensitivity94.9 dB +0.9
MonacorCF18VJD/8
£446.90Fs35 Hz –
Qts0.31 −6%
Vas145.8 L +8%
BL32.6 T·m +9%
Xmax12 mm −20%, worse
Sensitivity94.6 dB +0.6
BMS18N850V2
£457.13Fs30 Hz −12%, better
Qts0.33 –
Vas243 L +80%, worse
BL25.4 T·m −15%, worse
Xmax12 mm −20%, worse
Sensitivity94.7 dB +0.7
Eighteen Sound18NLW4500
£473.09Fs35 Hz –
Qts0.33 –
Vas151 L +12%, worse
BL30.3 T·m –
Xmax15.3 mm –
Sensitivity94.8 dB +0.8
EminenceNSW4018-8
£526.78Fs36 Hz +6%
Qts0.38 +15%, worse
Vas164.5 L +22%, worse
BL28.2 T·m −6%
Xmax15.2 mm –
Sensitivity95 dB +1
Eighteen Sound18NLW9601
£548.28Fs39 Hz +15%, worse
Qts0.28 −15%, better
Vas120 L −11%, better
BL31 T·m +3%
Xmax14 mm −7%
Sensitivity95.8 dB +1.8
Eighteen Sound18NTLW5000
£550.00Fs32 Hz −6%
Qts0.32 −3%
Vas176 L +30%, worse
BL31.3 T·m +4%
Xmax17.5 mm +17%, better
Sensitivity94.5 dB +0.5
Eighteen Sound18NLW9000
£550.00Fs34 Hz –
Qts0.31 −6%
Vas206 L +53%, worse
BL28 T·m −7%
Xmax14 mm −7%
Sensitivity96.1 dB +2.1, better
Eighteen Sound18NTLS5000
£665.00Fs37 Hz +9%
Qts0.33 –
Vas75 L −44%, better
BL30.7 T·m –
Xmax17.8 mm +18%, better
Sensitivity92.4 dB −1.6
B&C18HTX100
£809.86Fs44 Hz +29%, worse
Qts0.32 −3%
Vas173 L +28%, worse
BL26.3 T·m −12%, worse
Xmax13 mm −13%, worse
Sensitivity98.4 dB +4.4, better
Eighteen Sound18LW2500
No current priceFs34 Hz –
Qts0.33 –
Vas135 L –
BL30 T·m –
Xmax15 mm –
Sensitivity94 dB –
Precision DevicesPD.1852/2
No current priceFs42 Hz +23%, worse
Qts0.33 –
Vas120.4 L −11%, better
BL30.5 T·m –
Xmax12 mm −20%, worse
Sensitivity96.2 dB +2.2, better
Eighteen Sound18NLW9601C
No current priceFs38 Hz +12%, worse
Qts0.34 +3%
Vas99 L −27%, better
BL31.7 T·m +6%
Xmax14 mm −7%
Sensitivity93.8 dB –
Oberton18NXB1600
No current priceFs32 Hz −5%
Qts0.30 −8%
Vas173.1 L +28%, worse
BL29.6 T·m –
Xmax13.5 mm −10%, worse
Sensitivity94.5 dB +0.5
No photo
Precision DevicesPD.1845-1N
No current priceFs34 Hz –
Qts0.32 –
Vas179.0 L +33%, worse
BL26.4 T·m −12%, worse
Xmax16 mm +7%
Sensitivity95.3 dB +1.3
RCFLF18N408
No current priceFs30 Hz −12%, better
Qts0.33 –
Vas193 L +43%, worse
BL25.7 T·m −14%, worse
Xmax15 mm –
Sensitivity93.6 dB –
Oberton18NXB1601
No current priceFs35 Hz –
Qts0.29 −13%, better
Vas146.2 L +8%
BL30.5 T·m –
Xmax12.5 mm −17%, worse
Sensitivity95.1 dB +1.1
Oberton18NXB700
No current priceFs36 Hz +7%
Qts0.31 −5%
Vas155.5 L +15%, worse
BL27.8 T·m −7%
Xmax9 mm −40%, worse
Sensitivity95.6 dB +1.6
Oberton18XB1201
No current priceFs38 Hz +12%, worse
Qts0.32 −4%
Vas159.4 L +18%, worse
BL26.7 T·m −11%, worse
Xmax10.5 mm −30%, worse
Sensitivity96.3 dB +2.3, better
REDCATT186FIND
No current priceFs33 Hz –
Qts0.35 +6%
Vas174.2 L +29%, worse
BL30.2 T·m –
Xmax8.4 mm −44%, worse
Sensitivity94.4 dB –
VAS Audio18-1700FC
No current priceFs33 Hz –
Qts0.29 −11%, better
Vas181 L +34%, worse
BL33 T·m +10%, better
Xmax13.5 mm −10%, worse
Sensitivity95.4 dB +1.4
Oberton18XB1301DS
No current priceFs36 Hz +5%
Qts0.30 −8%
Vas172.9 L +28%, worse
BL26.9 T·m −10%, worse
Xmax12 mm −20%, worse
Sensitivity96 dB +2, better
Oberton18NXB1200
No current priceFs36 Hz +5%
Qts0.28 −15%, better
Vas159.6 L +18%, worse
BL29.4 T·m –
Xmax11.5 mm −23%, worse
Sensitivity96 dB +2, better
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 Audio | £331.66 | Out of stock | Visit shop at Lean Audio | |
Lean Business | £470.84 | Out of stock | Visit shop at Lean Business |