- Net volume
- 70L
- Tuning
- 45Hz
Eighteen Sound gives the volume and tuning; the port is sized for the driver when you open it.
15-inch LF driver · 600 W
Eighteen Sound 15ND940 8Ω
38–3500 Hz
No price for delivery to the UK
- Fs
- 38Hz
- Xmax
- 9.5mm
- SPL
- 97dB
- Pe
- 600W
- BL
- 21.9T·m
- Vd
- 837cm³
- Qts
- 0.28
- Vas
- 174L
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
240 plotted pointsMedium confidence591 selected pixels of 815
Published graphs
Eighteen Sound 15ND940 is a 15-inch 8 ohm LF driver rated at 600 W RMS. The validated T/S data includes Fs 38 Hz, Qts 0.28, Vas 174 L, Xmax 9.5 mm, sensitivity 97.2 dB, plus 837 cm³ Vd and 131 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
- 38Hz
- Qts
- 0.28
- Qes
- 0.29
- Qms
- 7.5
- Vas
- 174L
- Re
- 5.4Ω
- Le
- 0.70mH
Motor and cone
- BL
- 21.9T·m
- Sd
- 881cm²
- Mms
- 108g
- Xmax
- 9.5mm
- Vd †
- 837cm³
Power and response
- Sensitivity †
- 97.2dB
- Manufacturer sensitivity
- 99dB
- Power
- 600W
- Nominal power
- 600W
- Impedance
- 8Ω
- Range
- 38–3500Hz
- EBP †
- 131 · Leans vented
Size and mounting
- Diameter
- 392mm
- Cutout
- 354mm
- Bolt circle
- 371mm
- Depth
- 184mm
- Weight
- 4.7kg
Other published values
- Power Program
- 1200
Sensitivity shows 97.2 dB, calculated from the T/S values. Eighteen Sound publishes 99.0 dB, 1.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 15″
- BL
- 21.9T·m
- Fs
- 38Hz
- Le
- 0.70mH
- Re
- 5.4Ω
- Sd
- 881cm²
- Mms
- 108g
- Qes
- 0.29
- Qms
- 7.5
- Qts
- 0.28
- SPL
- 97.2dB
- Vas
- 174L
- Xmax
- 9.5mm
- Power
- 600W
- Impedance
- 8Ω
- Sensitivity
- 99dB
- Low limit
- 38Hz
- Nominal power
- 600W
- Power Program
- 1200
- Calculated sensitivity †
- 97.2dB
- High limit
- 3500Hz
- Manufacturer sensitivity
- 99dB
- Weight
- 4.7kg
- Diameter
- 392mm
- Depth
- 184mm
- Cutout
- 354mm
- Bolt circle
- 371mm
02
Designs
What Eighteen Sound suggests for the 15ND940. No published designs name it yet.
How we find designsEighteen Sound’s suggested box
From Eighteen Sound’s 15ND940 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 15ND940. Clear differences are green when better and red when worse.
This driver15ND940
Best price
–
Fs
38 Hz
Qts
0.28
Vas
174 L
BL
21.9 T·m
Xmax
9.5 mm
Sensitivity
97.2 dB
Power
600 W
B&C15PS76
£184.00Fs38 Hz –
Qts0.26 −7%
Vas164 L −6%
BL22.1 T·m –
Xmax7.5 mm −21%, worse
Sensitivity97.1 dB –
FaitalPRO15FH510
£199.28Fs35 Hz −8%
Qts0.26 −7%
Vas191.8 L +10%, worse
BL21 T·m −4%
Xmax9.3 mm –
Sensitivity96.9 dB –
FaitalPRO15FH500
£208.49Fs35 Hz −8%
Qts0.31 +11%, worse
Vas199.2 L +14%, worse
BL19.2 T·m −12%, worse
Xmax9.3 mm –
Sensitivity96.3 dB −0.9
BMS15S320
£208.72Fs41 Hz +8%
Qts0.28 –
Vas154 L −11%, better
BL23.3 T·m +6%
Xmax4.5 mm −53%, worse
Sensitivity97.7 dB +0.5
B&C15TBX100
£225.00Fs35 Hz −8%
Qts0.28 –
Vas113 L −35%, better
BL25.5 T·m +16%, better
Xmax9 mm −5%
Sensitivity94.1 dB −3.1, worse
RCFLF15G401
£238.26Fs36 Hz −5%
Qts0.26 −7%
Vas150 L −14%, better
BL24.6 T·m +12%, better
Xmax9 mm −5%
Sensitivity96.2 dB −1
FaitalPRO15FX560
£245.00Fs38 Hz –
Qts0.30 +7%
Vas159 L −9%
BL21.5 T·m –
Xmax9.4 mm –
Sensitivity96.5 dB −0.7
Oberton15XB1000
£250.00Fs37 Hz –
Qts0.28 –
Vas111.0 L −36%, better
BL25.6 T·m +17%, better
Xmax9 mm −5%
Sensitivity94.9 dB −2.3, worse
Eighteen Sound15LW1401
£254.65Fs42 Hz +11%, worse
Qts0.27 −4%
Vas131 L −25%, better
BL24.2 T·m +11%, better
Xmax9 mm −5%
Sensitivity97.4 dB –
FaitalPRO15HP1020
£263.08Fs40 Hz +5%
Qts0.27 −4%
Vas126.6 L −27%, better
BL24.2 T·m +11%, better
Xmax9 mm −5%
Sensitivity96.6 dB −0.6
B&C15NBX100
£267.25Fs36 Hz −5%
Qts0.29 +4%
Vas125 L −28%, better
BL25 T·m +14%, better
Xmax10 mm +5%
Sensitivity94.8 dB −2.4, worse
Sica15 K 3 PL
£272.13Fs40 Hz +5%
Qts0.27 −4%
Vas166.1 L −5%
BL21.4 T·m –
Xmax6.5 mm −32%, worse
Sensitivity97.8 dB +0.6
Eighteen Sound15LW1500
£315.00Fs34 Hz −11%, better
Qts0.28 –
Vas195 L +12%, worse
BL22.1 T·m –
Xmax9 mm −5%
Sensitivity96.2 dB −1
Eighteen Sound15NLW9300
£315.00Fs39 Hz –
Qts0.26 −7%
Vas170 L –
BL24.4 T·m +11%, better
Xmax8 mm −16%, worse
Sensitivity97.8 dB +0.6
BMS15S435
£317.34Fs38 Hz –
Qts0.28 –
Vas129 L −26%, better
BL24.4 T·m +11%, better
Xmax8 mm −16%, worse
Sensitivity95.9 dB −1.3
Eighteen Sound15NLW9500
£376.79Fs35 Hz −8%
Qts0.32 +14%, worse
Vas163 L −6%
BL21.6 T·m –
Xmax9 mm −5%
Sensitivity95.2 dB −2, worse
FaitalPRO15HX500
£426.19Fs40 Hz +5%
Qts0.28 –
Vas150.1 L −14%, better
BL22.2 T·m –
Xmax9.4 mm –
Sensitivity97.2 dB –
B&C15CXN88
£494.86Fs47 Hz +24%, worse
Qts0.30 +7%
Vas124 L −29%, better
BL20.1 T·m −8%
Xmax9.5 mm –
Sensitivity98.2 dB +1
CelestionFTR15-4080FD
No current priceFs35 Hz −7%
Qts0.28 –
Vas164.3 L −6%
BL23.1 T·m +5%
Xmax8.5 mm −11%, worse
Sensitivity95.9 dB −1.3
BMS15N830V2
No current priceFs37 Hz –
Qts0.27 −4%
Vas159 L −9%
BL22.4 T·m –
Xmax8 mm −16%, worse
Sensitivity96.5 dB −0.7
Oberton15XL700
No current priceFs45 Hz +19%, worse
Qts0.28 –
Vas117.0 L −33%, better
BL23.1 T·m +5%
Xmax8.8 mm −8%
Sensitivity97.8 dB +0.6
Oberton15XL701
No current priceFs45 Hz +19%, worse
Qts0.28 –
Vas117.0 L −33%, better
BL23.1 T·m +5%
Xmax8.8 mm −8%
Sensitivity97.8 dB +0.6
Oberton15NXL701
No current priceFs43 Hz +14%, worse
Qts0.30 +7%
Vas127.1 L −27%, better
BL21.7 T·m –
Xmax9.3 mm –
Sensitivity97.3 dB –
No photo
PHL Audio6201MND
No current priceFs36 Hz −5%
Qts0.27 −4%
Vas140 L −20%, better
BL25 T·m +14%, better
Xmax10.5 mm +11%, better
Sensitivity95.6 dB −1.6
CelestionFTR15-4080F
No current priceFs38 Hz –
Qts0.25 −11%, better
Vas163.1 L −6%
BL23.5 T·m +7%
Xmax8.5 mm −11%, worse
Sensitivity97.2 dB –
Oberton15XB700
No current priceFs37 Hz –
Qts0.28 –
Vas111.0 L −36%, better
BL25.6 T·m +17%, better
Xmax9 mm −5%
Sensitivity94.9 dB −2.3, worse
No photo
PHL Audio5011MNDU
No current priceFs38 Hz –
Qts0.26 −7%
Vas169 L –
BL23.7 T·m +8%
Xmax7.5 mm −21%, worse
Sensitivity97.2 dB –
CelestionFTX1530
No current priceFs43 Hz +12%, worse
Qts0.28 –
Vas172.1 L –
BL20.2 T·m −8%
Xmax6 mm −37%, worse
Sensitivity98.5 dB +1.3
Oberton15NMB500
No current priceFs45 Hz +18%, worse
Qts0.29 +4%
Vas128.0 L −26%, better
BL21.3 T·m –
Xmax7.8 mm −18%, worse
Sensitivity97.9 dB +0.7
Eighteen Sound15NTLW2500
No current priceFs45 Hz +18%, worse
Qts0.30 +7%
Vas143 L −18%, better
BL21.2 T·m −3%
Xmax8 mm −16%, worse
Sensitivity98.3 dB +1.1
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 | £228.40 | Back order | Visit shop at Lean Audio |