15-inch LF driver · 450 W
Eighteen Sound 15W700 8Ω
38–5000 Hz
£181.89
SteadyLean Business · All 5 offers
- Fs
- 38Hz
- Xmax
- 6.5mm
- SPL
- 98dB
- Pe
- 450W
- BL
- 18.4T·m
- Vd
- 553cm³
- Qts
- 0.30
- Vas
- 217L
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 confidence1,178 selected pixels of 1,178
Published graphs
Eighteen Sound 15W700 is a 15-inch 8 ohm LF driver rated at 450 W RMS. The validated T/S data includes Fs 38 Hz, Qts 0.30, Vas 217 L, Xmax 6.5 mm, sensitivity 97.6 dB, plus 553 cm³ Vd and 115 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 £177.60.
The published T/S values agree with each other
Thiele/Small
- Fs
- 38Hz
- Qts
- 0.30
- Qes
- 0.33
- Qms
- 3.8
- Vas
- 217L
- Re
- 5.7Ω
- Le
- 1.57mH
Motor and cone
- BL
- 18.4T·m
- Sd
- 850cm²
- Mms
- 80g
- Xmax
- 6.5mm
- Vd †
- 553cm³
Power and response
- Sensitivity †
- 97.6dB
- Manufacturer sensitivity
- 99dB
- Power
- 450W
- Nominal power
- 450W
- Impedance
- 8Ω
- Range
- 38–5000Hz
- EBP †
- 115 · Leans vented
Size and mounting
- Diameter
- 387mm
- Cutout
- 353mm
- Bolt circle
- 370mm
- Depth
- 168mm
- Weight
- 8.5kg
Other published values
- Power Program
- 700
Sensitivity shows 97.6 dB, calculated from the T/S values. Eighteen Sound publishes 99.0 dB, 1.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 15″
- BL
- 18.4T·m
- Fs
- 38Hz
- Le
- 1.57mH
- Re
- 5.7Ω
- Sd
- 850cm²
- Mms
- 80g
- Qes
- 0.33
- Qms
- 3.8
- Qts
- 0.30
- SPL
- 97.6dB
- Vas
- 217L
- Xmax
- 6.5mm
- Power
- 450W
- Impedance
- 8Ω
- Sensitivity
- 99dB
- Low limit
- 38Hz
- Nominal power
- 450W
- Power Program
- 700
- Calculated sensitivity †
- 97.6dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 99dB
- Weight
- 8.5kg
- Diameter
- 387mm
- Depth
- 168mm
- Cutout
- 353mm
- Bolt circle
- 370mm
02
Designs
Cabinets for the 15W700: a design and a suggested box from Eighteen Sound.
All 15W700 designsHow we find designsEighteen Sound’s design
From the maker, with plans to download
Eighteen Sound’s suggested box
From Eighteen Sound’s 15W700 page
- Tuning
- 45Hz
Eighteen Sound gives the tuning only; the port is yours to size.
03
Compare
Same-size drivers, compared with the 15W700. Clear differences are green when better and red when worse.
This driver15W700
Best price
£177.60
Fs
38 Hz
Qts
0.30
Vas
217 L
BL
18.4 T·m
Xmax
6.5 mm
Sensitivity
97.6 dB
Power
450 W
Beyma15WRS400
£150.96 · 15% less, betterFs36 Hz −5%
Qts0.33 +10%, worse
Vas236 L +9%
BL18.2 T·m –
Xmax6.3 mm −3%
Sensitivity97 dB −0.6
B&C15CLA76
£164.20 · 8% less, betterFs40 Hz +5%
Qts0.30 –
Vas176 L −19%, better
BL19.8 T·m +8%
Xmax5.5 mm −15%, worse
Sensitivity97.6 dB –
Beyma15WR400
£165.43 · 7% less, betterFs36 Hz −5%
Qts0.30 –
Vas236 L +9%
BL19.2 T·m +4%
Xmax6.3 mm −3%
Sensitivity97.5 dB –
FaitalPRO15PR450
£165.87 · 7% less, betterFs35 Hz −8%
Qts0.35 +17%, worse
Vas235.6 L +9%
BL16.6 T·m −10%
Xmax6 mm −8%
Sensitivity96.4 dB −1.2
EminenceKAPPA PRO-15LF
£166.34 · 6% less, betterFs35 Hz −8%
Qts0.30 –
Vas198.8 L −8%
BL21.6 T·m +17%, better
Xmax6.7 mm +3%
Sensitivity96.3 dB −1.3
FaitalPRO15PR400
£166.71 · 6% less, betterFs35 Hz −8%
Qts0.32 +7%
Vas248.9 L +15%, worse
BL16.7 T·m −9%
Xmax5.8 mm −12%, worse
Sensitivity97 dB −0.6
EminenceOMEGA PRO-15A
£168.20 · 5% less, betterFs33 Hz −13%, better
Qts0.32 +7%
Vas258.5 L +19%, worse
BL17.5 T·m −5%
Xmax4.8 mm −26%, worse
Sensitivity96.5 dB −1.1
Eighteen Sound15MB700
£174.30 · 2% lessFs42 Hz +11%, worse
Qts0.29 −3%
Vas202 L −7%
BL17.6 T·m −4%
Xmax5.5 mm −15%, worse
Sensitivity98.9 dB +1.3
FaitalPRO15FH500
£208.60 · 17% more, worseFs35 Hz −8%
Qts0.31 +3%
Vas199.2 L −8%
BL19.2 T·m +4%
Xmax9.3 mm +42%, better
Sensitivity96.3 dB −1.3
Eighteen Sound15ND830
£239.90 · 35% more, worseFs39 Hz –
Qts0.32 +7%
Vas213 L –
BL18 T·m –
Xmax6.5 mm –
Sensitivity97.6 dB –
Eighteen Sound15MB1000
£259.50 · 46% more, worseFs48 Hz +26%, worse
Qts0.31 +3%
Vas132.5 L −39%, better
BL21 T·m +14%, better
Xmax6 mm −8%
Sensitivity98.6 dB +1
Sica15 K 3 PL
£272.26 · 53% more, worseFs40 Hz +5%
Qts0.27 −10%
Vas166.1 L −23%, better
BL21.4 T·m +16%, better
Xmax6.5 mm –
Sensitivity97.8 dB –
Eighteen Sound15ND730
£272.61 · 53% more, worseFs44 Hz +16%, worse
Qts0.29 −3%
Vas156 L −28%, better
BL21 T·m +14%, better
Xmax6.5 mm –
Sensitivity98.5 dB +0.9
Eighteen Sound15NMB420
£289.52 · 63% more, worseFs42 Hz +11%, worse
Qts0.29 −3%
Vas225 L +4%
BL19 T·m +3%
Xmax6.5 mm –
Sensitivity99.5 dB +1.9
B&C15CXN76
£396.97 · 124% more, worseFs38 Hz –
Qts0.28 −7%
Vas246 L +13%, worse
BL17.8 T·m −3%
Xmax6 mm −8%
Sensitivity98.6 dB +1
B&C15HCX76
£399.49 · 125% more, worseFs38 Hz –
Qts0.28 −7%
Vas246 L +13%, worse
BL17.8 T·m −3%
Xmax6 mm −8%
Sensitivity98.6 dB +1
Beyma15XA38ND
No current priceFs38 Hz –
Qts0.30 –
Vas238 L +10%
BL20.4 T·m +11%, better
Xmax6 mm −8%
Sensitivity98.3 dB +0.7
Eighteen Sound15W600
No current priceFs38 Hz –
Qts0.29 −3%
Vas183 L −16%, better
BL20.5 T·m +11%, better
Xmax6.5 mm –
Sensitivity97.3 dB –
Oberton15HCX
No current priceFs41 Hz +7%
Qts0.30 –
Vas205.5 L −5%
BL17.1 T·m −7%
Xmax7.8 mm +19%, better
Sensitivity98.5 dB +0.9
Oberton15NMB35
No current priceFs39 Hz –
Qts0.34 +12%, worse
Vas177.5 L −18%, better
BL18.5 T·m –
Xmax6.8 mm +4%
Sensitivity96.8 dB −0.8
CelestionTF1530E
No current priceFs44 Hz +15%, worse
Qts0.33 +9%
Vas191.6 L −12%, better
BL17.0 T·m −7%
Xmax6.5 mm –
Sensitivity98.3 dB +0.7
MonacorSP-15A/402PA
No current priceFs36 Hz −5%
Qts0.31 +3%
Vas235 L +8%
BL19.9 T·m +8%
Xmax5 mm −23%, worse
Sensitivity97.2 dB –
Oberton15B450 / 15B450A / 15B450A2
No current priceFs45 Hz +19%, worse
Qts0.29 −5%
Vas146.8 L −32%, better
BL20.4 T·m +11%, better
Xmax6.8 mm +4%
Sensitivity98.6 dB +1
CelestionFTX1530
No current priceFs43 Hz +12%, worse
Qts0.28 −8%
Vas172.1 L −21%, better
BL20.2 T·m +10%
Xmax6 mm −8%
Sensitivity98.5 dB +0.9
Sica15 FE 3 CP
No current priceFs40 Hz +6%
Qts0.33 +10%, worse
Vas170.4 L −21%, better
BL19.1 T·m +4%
Xmax5.5 mm −15%, worse
Sensitivity97.2 dB –
FaneCOLOSSUS 15SB
No current priceFs41 Hz +8%
Qts0.29 −3%
Vas151 L −30%, better
BL22.5 T·m +22%, better
Xmax6.5 mm –
Sensitivity97.4 dB –
No photo
PHL Audio5021M
No current priceFs32 Hz −16%, better
Qts0.30 –
Vas169 L −22%, better
BL24 T·m +30%, better
Xmax7 mm +8%
Sensitivity94.4 dB −3.2, worse
Oberton15CX
No current priceFs38 Hz –
Qts0.35 +16%, worse
Vas163.8 L −25%, better
BL18.4 T·m –
Xmax7 mm +8%
Sensitivity95.9 dB −1.7
No current price
Fs38 Hz –
Qts0.35 +17%, worse
Vas201 L −7%
BL17.5 T·m −5%
Xmax6 mm −8%
Sensitivity96.5 dB −1.1
CelestionNTR15-3018E
No current priceFs35 Hz −8%
Qts0.28 −6%
Vas207.3 L −4%
BL21.1 T·m +15%, better
Xmax5 mm −23%, worse
Sensitivity96.7 dB −0.9
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann4.8 out of 516 ratings · Checked 23 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 Business | £181.89, the lowest price | Stock not listed | Visit shop at Lean Business | |
Lean Audio | £181.90 | Back order | Visit shop at Lean Audio | |
Thomann | £213.00 | 17% above the lowest price | In stock | Visit shop at Thomann |
Best price over time
Tracked since 1 Apr
Recent changes
- 19 OctThomann£214.00 → £213.00Down 0.5% from £214.00
- 11 OctThomann£216.00 → £214.00Down 0.9% from £216.00
- 3 OctThomann£218.00 → £216.00Down 0.9% from £218.00