HiViM6N
£20.93 · 93% less, betterFs46 Hz +31%, worse
Qts0.39 –
Vas21.9 L −41%, better
BL7.8 T·m +7%
Xmax4.3 mm −52%, worse
Sensitivity89.1 dB +1.5
7-inch LF driver · Illuminator series · 42 mm voice coil · 70 W
Scanspeak 18WU/8741T00 8Ω
8 Ω
£304.20
10%Falcon Acoustics · In stock · All 8 offers
- Fs
- 35Hz
- Xmax
- 9mm
- SPL
- 88dB
- Pe
- 70W
- BL
- 7.3T·m
- Vd
- 139cm³
- Qts
- 0.39
- Vas
- 37L
Scanspeak 18WU/8741T00 is a 7-inch 8 ohm LF driver rated at 70 W RMS. The validated T/S data includes Fs 35 Hz, Qts 0.39, Vas 37.1 L, Xmax 9 mm, sensitivity 87.6 dB, plus 139 cm³ Vd and 80 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 £300.68.
Partial source evidence
Automated T/S checks passed, but some material low-frequency parameters are not published for this record.
Material fields not published: Mms
- Manufacturer page linked
- Datasheet linked
- Canonical units normalized for comparison
- Vd can be derived from Sd and Xmax
- EBP can be derived from Fs and Qes
Thiele/Small
- Fs
- 35Hz
- Qts
- 0.39
- Qes
- 0.44
- Qms
- 3.8
- Vas
- 37.1L
- Re
- 5.8Ω
- Le
- 0.60mH
Motor and cone
- BL
- 7.3T·m
- Sd
- 154cm²
- Xmax
- 9mm
- Vd †
- 139cm³
- Voice coil
- 42mm
Power and response
- Sensitivity †
- 87.6dB
- Manufacturer sensitivity
- 85.5dB
- Power
- 70W
- Impedance
- 8Ω
- Min. impedance
- 7.3Ω
- EBP †
- 80 · Sealed or vented
Size and mounting
- Diameter
- 180mm
Other published values
- Cms
- 1.10mm/N
- Rms
- 1.10kg/s
- Xmech
- 16
- Power Peak
- 150
Sensitivity shows 87.6 dB, calculated from the T/S values. Scanspeak publishes 85.5 dB, 2.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 7″
- BL
- 7.3T·m
- Fs
- 35Hz
- Le
- 0.60mH
- Re
- 5.8Ω
- Sd
- 154cm²
- Cms
- 1.10mm/N
- Qes
- 0.44
- Qms
- 3.8
- Qts
- 0.39
- Rms
- 1.10kg/s
- SPL
- 87.6dB
- Vas
- 37.1L
- Xmax
- 9mm
- Xmech
- 16
- Power
- 70W
- Impedance
- 8Ω
- Power Peak
- 150
- Sensitivity
- 85.5dB
- Calculated sensitivity †
- 87.6dB
- Manufacturer sensitivity
- 85.5dB
- Min. impedance
- 7.3Ω
- Voice coil
- 42mm
- Diameter
- 180mm
02
Compare
Same-size drivers, compared with the 18WU/8741T00. Clear differences are green when better and red when worse.
This driver18WU/8741T00
Best price
£300.68
Fs
35 Hz
Qts
0.39
Vas
37.1 L
BL
7.3 T·m
Xmax
9 mm
Sensitivity
87.6 dB
Power
70 W
Dayton AudioSD215A-88
£50.20 · 83% less, betterFs31 Hz −11%, better
Qts0.39 –
Vas38.2 L –
BL7.7 T·m +5%
Xmax6 mm −33%, worse
Sensitivity86.1 dB −1.5
PeerlessHDS-P830875
£56.87 · 81% less, betterFs48 Hz +37%, worse
Qts0.39 –
Vas18.6 L −50%, better
BL8.7 T·m +18%, better
Xmax7.3 mm −18%, worse
Sensitivity88.7 dB +1.1
MonacorSPH-176
£58.80 · 80% less, betterFs39 Hz +11%, worse
Qts0.37 −5%
Vas27 L −27%, better
BL7.7 T·m +5%
Xmax5.5 mm −39%, worse
Sensitivity87.6 dB –
CIAREHWB160
£65.31 · 78% less, betterFs43 Hz +23%, worse
Qts0.37 −5%
Vas28 L −25%, better
BL7.3 T·m –
Xmax4.5 mm −50%, worse
Sensitivity89.4 dB +1.8
REDCATT8FR
£66.10 · 78% less, betterFs53 Hz +51%, worse
Qts0.38 −3%
Vas36.8 L –
BL7.9 T·m +8%
Xmax5.8 mm −36%, worse
Sensitivity93.4 dB +5.8, better
SB AcousticsSB17NAC35-8
£70.75 · 76% less, betterFs32 Hz −10%, better
Qts0.42 +8%
Vas33 L −11%, better
BL6.2 T·m −15%, worse
Xmax5.5 mm −39%, worse
Sensitivity85.6 dB −2, worse
Dayton AudioDCS205-4
£75.27 · 75% less, betterFs32 Hz −8%
Qts0.37 −5%
Vas27 L −27%, better
BL10.7 T·m +47%, better
Xmax8.8 mm –
Sensitivity85.6 dB −2, worse
REDCATT8FHM
£83.69 · 72% less, betterFs38 Hz +9%
Qts0.39 –
Vas32.1 L −13%, better
BL8.2 T·m +12%, better
Xmax5 mm −44%, worse
Sensitivity88.4 dB +0.8
SB AcousticsMW16P-12
£146.49 · 51% less, betterFs31 Hz −13%, better
Qts0.37 −5%
Vas47.3 L +27%, worse
BL7.4 T·m –
Xmax6.2 mm −31%, worse
Sensitivity87.3 dB –
£152.39 · 49% less, better
Fs42 Hz +20%, worse
Qts0.39 –
Vas31 L −16%, better
BL6.6 T·m −10%
Xmax3 mm −67%, worse
Sensitivity89.4 dB +1.8
Scanspeak18W/8542-10
£157.04 · 48% less, betterFs43 Hz +23%, worse
Qts0.35 −10%, better
Vas26 L −30%, better
BL6.9 T·m −5%
Xmax6.5 mm −28%, worse
Sensitivity88.7 dB +1.1
WavecorWF223BD01
£205.39 · 32% less, betterFs33 Hz −7%
Qts0.39 –
Vas45 L +21%, worse
BL7.7 T·m +5%
Xmax6.5 mm −28%, worse
Sensitivity87.9 dB –
Scanspeak18WU/8747T00
£284.64 · 5% less, betterFs36 Hz –
Qts0.38 –
Vas36.2 L –
BL7.4 T·m –
Xmax9 mm –
Sensitivity88 dB –
Scanspeak18WU/4747T00
£288.83 · 4% lessFs36 Hz –
Qts0.35 −10%, better
Vas36 L –
BL5.9 T·m −19%, worse
Xmax9 mm –
Sensitivity88.4 dB +0.8
Scanspeak18WU/4741T00
£304.20 · 1% moreFs34 Hz –
Qts0.36 −8%
Vas38.4 L +4%
BL5.9 T·m −19%, worse
Xmax9 mm –
Sensitivity87.9 dB –
PurifiPTT6.5X08-NAA-08
£393.49 · 31% more, worseFs34 Hz –
Qts0.40 –
Vas20.4 L −45%, better
BL9 T·m +23%, better
Xmax9.8 mm +9%
Sensitivity84.8 dB −2.8, worse
£502.34 · 67% more, worse
Fs33 Hz −6%
Qts0.39 –
Vas33 L −11%, better
BL7.9 T·m +8%
Xmax7 mm −22%, worse
Sensitivity86.5 dB −1.1
£586.08 · 95% more, worse
Fs34 Hz –
Qts0.41 +5%
Vas24 L −35%, better
BL8.3 T·m +14%, better
Xmax7 mm −22%, worse
Sensitivity85.2 dB −2.4, worse
PurifiPTT8.0X04-NAB-01
£586.08 · 95% more, worseFs26 Hz −26%, better
Qts0.36 −8%
Vas70.4 L +90%, worse
BL8 T·m +10%
Xmax9.3 mm +3%
Sensitivity87.2 dB –
KartesianSUB185_VKI
No current priceFs28 Hz −20%, better
Qts0.41 +5%
Vas38.6 L +4%
BL6.9 T·m −5%
Xmax15 mm +67%, better
Sensitivity84.8 dB −2.8, worse
KartesianWOM155_VKI-C
No current priceFs38 Hz +9%
Qts0.37 −5%
Vas17.9 L −52%, better
BL7.1 T·m –
Xmax10 mm +11%, better
Sensitivity86 dB −1.6
Tang BandW6-623I
No current priceFs46 Hz +31%, worse
Qts0.41 +5%
Vas29.8 L −20%, better
BL6.7 T·m −8%
Xmax4 mm −56%, worse
Sensitivity90.1 dB +2.5, better
CIARECME201
No current priceFs60 Hz +71%, worse
Qts0.40 –
Vas21.5 L −42%, better
BL7.5 T·m –
Xmax4.5 mm −50%, worse
Sensitivity92.3 dB +4.7, better
No current price
Fs35 Hz –
Qts0.34 −13%, better
Vas31 L −16%, better
BL7.4 T·m –
Xmax7 mm −22%, worse
Sensitivity87.5 dB –
Supravox165 GMF
No current priceFs70 Hz +100%, worse
Qts0.39 –
Vas40 L +8%
BL5.6 T·m −23%, worse
Xmax6 mm −33%, worse
Sensitivity97.2 dB +9.6, better
HiViSS6.5
No current priceFs42 Hz +20%, worse
Qts0.39 –
Vas24.8 L −33%, better
BL6.4 T·m −12%, worse
Xmax5.8 mm −36%, worse
Sensitivity88.1 dB +0.5
HiViD8G
No current priceFs35 Hz –
Qts0.41 +5%
Vas30.3 L −18%, better
BL13 T·m +78%, better
Xmax8.3 mm −8%
Sensitivity86.4 dB −1.2
Audio Technology6 A 77 20 06 SD
No current priceFs34 Hz –
Qts0.32 −18%, better
Vas44 L +19%, worse
BL8 T·m +10%
Xmax8 mm −11%, worse
Sensitivity88.6 dB +1
PurifiPTT6.5X04-NAA-08
No current priceFs32 Hz −9%
Qts0.35 −10%, better
Vas20.5 L −45%, better
BL7.8 T·m +7%
Xmax9.8 mm +9%
Sensitivity84.6 dB −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
- SoundImports5.0 out of 51 rating · Checked 24 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Falcon Acoustics | £304.20, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £339.84 | 12% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
Lautsprechershop Import VAT and duty may apply | £300.68 | Stock not listed | Visit shop at Lautsprechershop | |
SoundImports Import VAT and duty may apply | £309.76 | 1.8% above the lowest price | 4 in stock | Visit shop at SoundImports |
Hifisound Import VAT and duty may apply · under 7 working days | £318.76 | 4.8% above the lowest price | Back order (under 7 working days) | Visit shop at Hifisound |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£348.95 → £339.84Down 2.6% from £348.95
- 30 SepWillys-Hifi£346.95 → £348.95Up 0.6% from £346.95
- 29 SepWillys-Hifi£347.95 → £346.95Down 0.3% from £347.95