- Net volume
- 60L
- Tuning
- 55Hz
Eighteen Sound gives the volume and tuning; the port is sized for the driver when you open it.
15-inch LF driver · 450 W
Eighteen Sound 15NMB420 8Ω
8 Ω · 40–5000 Hz
No price for delivery to the UK
- Fs
- 42Hz
- Xmax
- 6.5mm
- SPL
- 100dB
- Pe
- 450W
- BL
- 19T·m
- Vd
- 585cm³
- Qts
- 0.29
- Vas
- 225L
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 confidence1,475 selected pixels of 1,475
Published graphs
Eighteen Sound 15NMB420 is a 15-inch 8 ohm LF driver rated at 450 W RMS. The validated T/S data includes Fs 42 Hz, Qts 0.29, Vas 225 L, Xmax 6.5 mm, sensitivity 99.5 dB, plus 585 cm³ Vd and 140 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 £289.37.
The published T/S values agree with each other
Thiele/Small
- Fs
- 42Hz
- Qts
- 0.29
- Qes
- 0.30
- Qms
- 6
- Vas
- 225L
- Re
- 5.6Ω
- Le
- 0.80mH
Motor and cone
- BL
- 19T·m
- Sd
- 900cm²
- Mms
- 73g
- Xmax
- 6.5mm
- Vd †
- 585cm³
Power and response
- Sensitivity †
- 99.5dB
- Manufacturer sensitivity
- 99dB
- Power
- 450W
- Nominal power
- 450W
- Impedance
- 8Ω
- Range
- 40–5000Hz
- EBP †
- 140 · Leans vented
Size and mounting
- Diameter
- 387mm
- Cutout
- 353mm
- Bolt circle
- 370mm
- Depth
- 169mm
- Weight
- 3.9kg
Other published values
- Power Program
- 700
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 15″
- BL
- 19T·m
- Fs
- 42Hz
- Le
- 0.80mH
- Re
- 5.6Ω
- Sd
- 900cm²
- Mms
- 73g
- Qes
- 0.30
- Qms
- 6
- Qts
- 0.29
- SPL
- 99.5dB
- Vas
- 225L
- Xmax
- 6.5mm
- Power
- 450W
- Impedance
- 8Ω
- Sensitivity
- 99dB
- Low limit
- 40Hz
- Nominal power
- 450W
- Power Program
- 700
- Calculated sensitivity †
- 99.5dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 99dB
- Weight
- 3.9kg
- Diameter
- 387mm
- Depth
- 169mm
- Cutout
- 353mm
- Bolt circle
- 370mm
02
Designs
What Eighteen Sound suggests for the 15NMB420. No published designs name it yet.
How we find designsEighteen Sound’s suggested box
From Eighteen Sound’s 15NMB420 page
Open this box in 00 Simulator
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 15NMB420. Clear differences are green when better and red when worse.
This driver15NMB420
Best price
£289.37
Fs
42 Hz
Qts
0.29
Vas
225 L
BL
19 T·m
Xmax
6.5 mm
Sensitivity
99.5 dB
Power
450 W
Beyma15WRS400
£150.88 · 48% less, betterFs36 Hz −14%, better
Qts0.33 +14%, worse
Vas236 L +5%
BL18.2 T·m −4%
Xmax6.3 mm −3%
Sensitivity97 dB −2.5, worse
B&C15CLA76
£164.11 · 43% less, betterFs40 Hz −5%
Qts0.30 +3%
Vas176 L −22%, better
BL19.8 T·m +4%
Xmax5.5 mm −15%, worse
Sensitivity97.6 dB −1.9
Beyma15WR400
£165.43 · 43% less, betterFs36 Hz −14%, better
Qts0.30 +3%
Vas236 L +5%
BL19.2 T·m –
Xmax6.3 mm −3%
Sensitivity97.5 dB −2, worse
EminenceKAPPA PRO-15LF
£166.34 · 43% less, betterFs35 Hz −17%, better
Qts0.30 +3%
Vas198.8 L −12%, better
BL21.6 T·m +14%, better
Xmax6.7 mm +3%
Sensitivity96.3 dB −3.2, worse
FaitalPRO15PR400
£166.62 · 42% less, betterFs35 Hz −17%, better
Qts0.32 +10%, worse
Vas248.9 L +11%, worse
BL16.7 T·m −12%, worse
Xmax5.8 mm −12%, worse
Sensitivity97 dB −2.5, worse
Eighteen Sound15MB700
£174.30 · 40% less, betterFs42 Hz –
Qts0.29 –
Vas202 L −10%, better
BL17.6 T·m −7%
Xmax5.5 mm −15%, worse
Sensitivity98.9 dB −0.6
Eighteen Sound15W700
£177.51 · 39% less, betterFs38 Hz −10%
Qts0.30 +3%
Vas217 L −4%
BL18.4 T·m −3%
Xmax6.5 mm –
Sensitivity97.6 dB −1.9
FaitalPRO15FH500
£208.49 · 28% less, betterFs35 Hz −17%, better
Qts0.31 +7%
Vas199.2 L −11%, better
BL19.2 T·m –
Xmax9.3 mm +42%, better
Sensitivity96.3 dB −3.2, worse
Beyma14MC700ND
£229.73 · 21% less, betterFs51 Hz +21%, worse
Qts0.28 −3%
Vas78 L −65%, better
BL22 T·m +16%, better
Xmax7 mm +8%
Sensitivity97.4 dB −2.1, worse
Eighteen Sound15ND830
£239.90 · 17% less, betterFs39 Hz −7%
Qts0.32 +10%, worse
Vas213 L −5%
BL18 T·m −5%
Xmax6.5 mm –
Sensitivity97.6 dB −1.9
Eighteen Sound15MB1000
£259.50 · 10% less, betterFs48 Hz +14%, worse
Qts0.31 +7%
Vas132.5 L −41%, better
BL21 T·m +11%, better
Xmax6 mm −8%
Sensitivity98.6 dB −0.9
Sica15 K 3 PL
£272.13 · 6% less, betterFs40 Hz −5%
Qts0.27 −7%
Vas166.1 L −26%, better
BL21.4 T·m +13%, better
Xmax6.5 mm –
Sensitivity97.8 dB −1.7
Eighteen Sound15ND730
£272.47 · 6% less, betterFs44 Hz +5%
Qts0.29 –
Vas156 L −31%, better
BL21 T·m +11%, better
Xmax6.5 mm –
Sensitivity98.5 dB −1
B&C15CXN76
£396.97 · 37% more, worseFs38 Hz −10%
Qts0.28 −3%
Vas246 L +9%
BL17.8 T·m −6%
Xmax6 mm −8%
Sensitivity98.6 dB −0.9
B&C15HCX76
£399.49 · 38% more, worseFs38 Hz −10%
Qts0.28 −3%
Vas246 L +9%
BL17.8 T·m −6%
Xmax6 mm −8%
Sensitivity98.6 dB −0.9
Eighteen Sound15W600
No current priceFs38 Hz −10%
Qts0.29 –
Vas183 L −19%, better
BL20.5 T·m +8%
Xmax6.5 mm –
Sensitivity97.3 dB −2.2, worse
Beyma15XA38ND
No current priceFs38 Hz −10%
Qts0.30 +3%
Vas238 L +6%
BL20.4 T·m +7%
Xmax6 mm −8%
Sensitivity98.3 dB −1.2
Oberton15B450 / 15B450A / 15B450A2
No current priceFs45 Hz +7%
Qts0.29 –
Vas146.8 L −35%, better
BL20.4 T·m +8%
Xmax6.8 mm +4%
Sensitivity98.6 dB −0.9
CelestionFTX1530
No current priceFs43 Hz –
Qts0.28 −5%
Vas172.1 L −24%, better
BL20.2 T·m +6%
Xmax6 mm −8%
Sensitivity98.5 dB −1
FaneCOLOSSUS 15SB
No current priceFs41 Hz –
Qts0.29 –
Vas151 L −33%, better
BL22.5 T·m +18%, better
Xmax6.5 mm –
Sensitivity97.4 dB −2.1, worse
Precision DevicesPD.153C002
No current priceFs38 Hz −10%
Qts0.25 −14%, better
Vas263 L +17%, worse
BL18.9 T·m –
Xmax6.8 mm +4%
Sensitivity99.4 dB –
CelestionNTR15-3018E
No current priceFs35 Hz −17%, better
Qts0.28 –
Vas207.3 L −8%
BL21.1 T·m +11%, better
Xmax5 mm −23%, worse
Sensitivity96.7 dB −2.8, worse
Oberton15HCX
No current priceFs41 Hz −3%
Qts0.30 +3%
Vas205.5 L −9%
BL17.1 T·m −10%, worse
Xmax7.8 mm +19%, better
Sensitivity98.5 dB −1
Oberton15L400
No current priceFs43 Hz –
Qts0.29 –
Vas229.9 L –
BL16.9 T·m −11%, worse
Xmax3.3 mm −50%, worse
Sensitivity100 dB +0.5
MonacorSP-15A/402PA
No current priceFs36 Hz −14%, better
Qts0.31 +7%
Vas235 L +4%
BL19.9 T·m +5%
Xmax5 mm −23%, worse
Sensitivity97.2 dB −2.3, worse
Oberton15NMB35
No current priceFs39 Hz −7%
Qts0.34 +16%, worse
Vas177.5 L −21%, better
BL18.5 T·m –
Xmax6.8 mm +4%
Sensitivity96.8 dB −2.7, worse
CelestionTF1530E
No current priceFs44 Hz +4%
Qts0.33 +13%, worse
Vas191.6 L −15%, better
BL17.0 T·m −10%, worse
Xmax6.5 mm –
Sensitivity98.3 dB −1.2
No photo
PHL Audio5021M
No current priceFs32 Hz −24%, better
Qts0.30 +3%
Vas169 L −25%, better
BL24 T·m +26%, better
Xmax7 mm +8%
Sensitivity94.4 dB −5.1, worse
Oberton15NMB500
No current priceFs45 Hz +7%
Qts0.29 –
Vas128.0 L −43%, better
BL21.3 T·m +12%, better
Xmax7.8 mm +19%, better
Sensitivity97.9 dB −1.6
Sica15 FE 3 CP
No current priceFs40 Hz −4%
Qts0.33 +14%, worse
Vas170.4 L −24%, better
BL19.1 T·m –
Xmax5.5 mm −15%, worse
Sensitivity97.2 dB −2.3, 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 Audio | £340.34 | Out of stock | Visit shop at Lean Audio |