7-inch LF driver · Illuminator series · 42 mm voice coil · 70 W

Scanspeak 18WU/8747T00 8Ω

Name: Scanspeak 18WU/8747T00 8 Ohm
Brand: Scanspeak
SKU: 18WU/8747T00
Availability: InStock

8 Ω

£304.08

3.3%

7.1% below the average of 3 shops

Falcon Acoustics · In stock · All 7 offers

Open in 00 Simulator

Fs: 36Hz
Xmax: 9mm
SPL: 88dB
Pe: 70W
BL: 7.4T·m
Vd: 139cm³
Qts: 0.38
Vas: 36L

See all 23 specs

Specifications

Published by Scanspeak

Manufacturer page

Datasheet PDF

Scanspeak 18WU/8747T00 is a 7-inch 8 ohm LF driver rated at 70 W RMS. The validated T/S data includes Fs 36 Hz, Qts 0.38, Vas 36.2 L, Xmax 9 mm, sensitivity 88 dB, plus 139 cm³ Vd and 84 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 £284.64.

The published T/S values agree with each other

Thiele/Small

Fs: 36Hz
Qts: 0.38
Qes: 0.43
Qms: 3.7
Vas: 36.2L
Re: 5.8Ω
Le: 0.60mH

Motor and cone

BL: 7.4T·m
Sd: 154cm²
Mms: 18g
Xmax: 9mm
Vd †: 139cm³
Voice coil: 42mm

Power and response

Sensitivity †: 88dB
Manufacturer sensitivity: 85.5dB
Power: 70W
Impedance: 8Ω
Min. impedance: 7.3Ω
EBP †: 84 · Sealed or vented

Size and mounting

Diameter: 180mm

Other published values

Rms: 1.10kg/s
Xmech: 16
Power Peak: 150

Sensitivity shows 88.0 dB, calculated from the T/S values. Scanspeak publishes 85.5 dB, 2.5 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Scanspeak lists

LF · Primary · 7″

BL: 7.4T·m
Fs: 36Hz
Le: 0.60mH
Re: 5.8Ω
Sd: 154cm²
Mms: 18g
Qes: 0.43
Qms: 3.7
Qts: 0.38
Rms: 1.10kg/s
SPL: 88dB
Vas: 36.2L
Xmax: 9mm
Xmech: 16
Power: 70W
Impedance: 8Ω
Power Peak: 150
Sensitivity: 85.5dB
Calculated sensitivity †: 88dB
Manufacturer sensitivity: 85.5dB
Min. impedance: 7.3Ω
Voice coil: 42mm
Diameter: 180mm

Compare

Same-size drivers, compared with the 18WU/8747T00. Clear differences are green when better and red when worse.

This driver18WU/8747T00

Best price

£284.64

36 Hz

Qts

0.38

Vas

36.2 L

7.4 T·m

Xmax

9 mm

Sensitivity

88 dB

Power

70 W

HiViM6N

£20.93 · 93% less

Fs46 Hz +28%

Qts0.39 –

Vas21.9 L −40%

BL7.8 T·m +5%

Xmax4.3 mm −52%

Sensitivity89.1 dB +1.1

Dayton AudioSD215A-88

£50.20 · 82% less

Fs31 Hz −14%

Qts0.39 –

Vas38.2 L +6%

BL7.7 T·m +4%

Xmax6 mm −33%

Sensitivity86.1 dB −1.9

SB AcousticsSB17MFC35-8

£54.89 · 81% less

Fs33 Hz −8%

Qts0.37 –

Vas39 L +8%

BL5.9 T·m −20%

Xmax5.5 mm −39%

Sensitivity87.5 dB −0.5

MonacorSPH-176

£58.80 · 79% less

Fs39 Hz +8%

Qts0.37 –

Vas27 L −25%

BL7.7 T·m +4%

Xmax5.5 mm −39%

Sensitivity87.6 dB –

CIAREHWB160

£65.31 · 77% less

Fs43 Hz +19%

Qts0.37 –

Vas28 L −23%

BL7.3 T·m –

Xmax4.5 mm −50%

Sensitivity89.4 dB +1.4

REDCATT8FR

£66.10 · 77% less

Fs53 Hz +47%

Qts0.38 –

Vas36.8 L –

BL7.9 T·m +6%

Xmax5.8 mm −36%

Sensitivity93.4 dB +5.4

CIAREHWB200

£72.01 · 75% less

Fs32 Hz −11%

Qts0.38 –

Vas57 L +57%

BL7.3 T·m –

Xmax7 mm −22%

Sensitivity88.8 dB +0.8

Dayton AudioDCS205-4

£75.27 · 74% less

Fs32 Hz −10%

Qts0.37 –

Vas27 L −25%

BL10.7 T·m +45%

Xmax8.8 mm –

Sensitivity85.6 dB −2.4

REDCATT8FHM

£83.69 · 71% less

Fs38 Hz +6%

Qts0.39 –

Vas32.1 L −11%

BL8.2 T·m +11%

Xmax5 mm −44%

Sensitivity88.4 dB –

WavecorWF182BD12

£118.19 · 58% less

Fs30 Hz −18%

Qts0.37 –

Vas32.4 L −10%

BL8.2 T·m +11%

Xmax5.5 mm −39%

Sensitivity85.4 dB −2.6

SB AcousticsMW16P-12

£146.49 · 49% less

Fs31 Hz −15%

Qts0.37 –

Vas47.3 L +31%

BL7.4 T·m –

Xmax6.2 mm −31%

Sensitivity87.3 dB −0.7

SEASH1794-08 FEA18RCZ

£152.39 · 46% less

Fs42 Hz +17%

Qts0.39 –

Vas31 L −14%

BL6.6 T·m −11%

Xmax3 mm −67%

Sensitivity89.4 dB +1.4

MarkaudioMA200-M MULTI

£156.00 · 45% less

Fs33 Hz −8%

Qts0.35 −9%

Vas65.2 L +80%

BL8.5 T·m +15%

Xmax9 mm –

Sensitivity89.6 dB +1.6

Scanspeak18W/8542-10

£157.04 · 45% less

Fs43 Hz +19%

Qts0.35 −8%

Vas26 L −28%

BL6.9 T·m −7%

Xmax6.5 mm −28%

Sensitivity88.7 dB +0.7

WavecorWF182BD20

£188.39 · 34% less

Fs30 Hz −18%

Qts0.37 –

Vas32.4 L −10%

BL8.2 T·m +11%

Xmax5.5 mm −39%

Sensitivity85.4 dB −2.6

WavecorWF223BD01

£205.39 · 28% less

Fs33 Hz −9%

Qts0.39 –

Vas45 L +24%

BL7.7 T·m +4%

Xmax6.5 mm −28%

Sensitivity87.9 dB –

Scanspeak18WU/4747T00

£288.83 · 1% more

Fs36 Hz –

Qts0.35 −8%

Vas36 L –

BL5.9 T·m −20%

Xmax9 mm –

Sensitivity88.4 dB –

Scanspeak18WU/8741T00

£300.68 · 6% more

Fs35 Hz –

Qts0.39 –

Vas37.1 L –

BL7.3 T·m –

Xmax9 mm –

Sensitivity87.6 dB –

Scanspeak18WU/4741T00

£304.20 · 7% more

Fs34 Hz −6%

Qts0.36 −5%

Vas38.4 L +6%

BL5.9 T·m −20%

Xmax9 mm –

Sensitivity87.9 dB –

AccutonC158-8-085

£326.51 · 15% more

Fs37 Hz –

Qts0.36 −5%

Vas27.3 L −25%

BL7.7 T·m +4%

Xmax5 mm −44%

Sensitivity87.5 dB −0.5

PurifiPTT6.5X08-NAA-08

£393.49 · 38% more

Fs34 Hz −6%

Qts0.40 +5%

Vas20.4 L −44%

BL9 T·m +22%

Xmax9.8 mm +9%

Sensitivity84.8 dB −3.2

SEASE0117-08 W19NX004

£502.34 · 76% more

Fs33 Hz −8%

Qts0.39 –

Vas33 L −9%

BL7.9 T·m +7%

Xmax7 mm −22%

Sensitivity86.5 dB −1.5

PurifiPTT8.0X04-NAB-01

£586.08 · 106% more

Fs26 Hz −28%

Qts0.36 −5%

Vas70.4 L +94%

BL8 T·m +8%

Xmax9.3 mm +3%

Sensitivity87.2 dB −0.8

KartesianWOM155_VKI-C

No current price

Fs38 Hz +6%

Qts0.37 –

Vas17.9 L −51%

BL7.1 T·m −4%

Xmax10 mm +11%

Sensitivity86 dB −2

SEASE0096-08 W18NX003

No current price

Fs35 Hz –

Qts0.34 −11%

Vas31 L −14%

BL7.4 T·m –

Xmax7 mm −22%

Sensitivity87.5 dB −0.5

KartesianSUB185_VKI

No current price

Fs28 Hz −22%

Qts0.41 +8%

Vas38.6 L +7%

BL6.9 T·m −6%

Xmax15 mm +67%

Sensitivity84.8 dB −3.2

PurifiPTT6.5X04-NAA-08

No current price

Fs32 Hz −11%

Qts0.35 −8%

Vas20.5 L −43%

BL7.8 T·m +5%

Xmax9.8 mm +9%

Sensitivity84.6 dB −3.4

Audio Technology6 A 77 20 06 SD

No current price

Fs34 Hz −6%

Qts0.32 −16%

Vas44 L +22%

BL8 T·m +8%

Xmax8 mm −11%

Sensitivity88.6 dB +0.6

RS SpeakersW 174.38 FIBONACCI

No current price

Fs38 Hz +4%

Qts0.38 –

Vas22.9 L −37%

BL7.2 T·m –

Xmax6 mm −33%

Sensitivity87 dB −1

CIARECME201

No current price

Fs60 Hz +67%

Qts0.40 +5%

Vas21.5 L −41%

BL7.5 T·m –

Xmax4.5 mm −50%

Sensitivity92.3 dB +4.3

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
Falcon Acoustics Checked 26 Oct 2026 · Source: inc VAT · 20%	£304.08, the lowest price		In stock	Visit shop at Falcon Acoustics
Willys-Hifi Checked 26 Oct 2026 · Source: ex VAT · 20%	£314.35	3.4% above the lowest price	Stock not listed	Visit shop at Willys-Hifi
Wilmslow Audio Checked 26 Oct 2026 · Source: inc VAT · 20%	£363.41	20% above the lowest price	Stock not listed	Visit shop at Wilmslow Audio
Lautsprechershop Checked 26 Oct 2026 · Ships from Germany · 8 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£282.59		Special order	Visit shop at Lautsprechershop
SoundImports Checked 26 Oct 2026 · Ships from Netherlands · Source: inc VAT Import VAT and duty may apply	£284.64		6 in stock	Visit shop at SoundImports

Best price over time

Tracked since 1 Apr

Recent changes

1 OctWillys-Hifi£321.95 → £314.35Down 2.4% from £321.95
30 SepWillys-Hifi£320.95 → £321.95Up 0.3% from £320.95
29 SepWillys-Hifi£321.95 → £320.95Down 0.3% from £321.95

bits00 AUDIO

7-inch LF driver · Illuminator series · 42 mm voice coil · 70 W

Scanspeak 18WU/8747T00 8Ω

8 Ω

£304.08

3.3%

7.1% below the average of 3 shops

Falcon Acoustics · In stock · All 7 offers

Open in 00 Simulator

Fs: 36Hz
Xmax: 9mm
SPL: 88dB
Pe: 70W
BL: 7.4T·m
Vd: 139cm³
Qts: 0.38
Vas: 36L

See all 23 specs

Specifications

Published by Scanspeak

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 36Hz
Qts: 0.38
Qes: 0.43
Qms: 3.7
Vas: 36.2L
Re: 5.8Ω
Le: 0.60mH

Motor and cone

BL: 7.4T·m
Sd: 154cm²
Mms: 18g
Xmax: 9mm
Vd †: 139cm³
Voice coil: 42mm

Power and response

Sensitivity †: 88dB
Manufacturer sensitivity: 85.5dB
Power: 70W
Impedance: 8Ω
Min. impedance: 7.3Ω
EBP †: 84 · Sealed or vented

Size and mounting

Diameter: 180mm

Other published values

Rms: 1.10kg/s
Xmech: 16
Power Peak: 150

Sensitivity shows 88.0 dB, calculated from the T/S values. Scanspeak publishes 85.5 dB, 2.5 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Scanspeak lists

LF · Primary · 7″

BL: 7.4T·m
Fs: 36Hz
Le: 0.60mH
Re: 5.8Ω
Sd: 154cm²
Mms: 18g
Qes: 0.43
Qms: 3.7
Qts: 0.38
Rms: 1.10kg/s
SPL: 88dB
Vas: 36.2L
Xmax: 9mm
Xmech: 16
Power: 70W
Impedance: 8Ω
Power Peak: 150
Sensitivity: 85.5dB
Calculated sensitivity †: 88dB
Manufacturer sensitivity: 85.5dB
Min. impedance: 7.3Ω
Voice coil: 42mm
Diameter: 180mm

Compare

Same-size drivers, compared with the 18WU/8747T00. Clear differences are green when better and red when worse.

This driver18WU/8747T00

Best price

£284.64

36 Hz

Qts

0.38

Vas

36.2 L

7.4 T·m

Xmax

9 mm

Sensitivity

88 dB

Power

70 W

HiViM6N

£20.93 · 93% less

Fs46 Hz +28%

Qts0.39 –

Vas21.9 L −40%

BL7.8 T·m +5%

Xmax4.3 mm −52%

Sensitivity89.1 dB +1.1

Dayton AudioSD215A-88

£50.20 · 82% less

Fs31 Hz −14%

Qts0.39 –

Vas38.2 L +6%

BL7.7 T·m +4%

Xmax6 mm −33%

Sensitivity86.1 dB −1.9

SB AcousticsSB17MFC35-8

£54.89 · 81% less

Fs33 Hz −8%

Qts0.37 –

Vas39 L +8%

BL5.9 T·m −20%

Xmax5.5 mm −39%

Sensitivity87.5 dB −0.5

MonacorSPH-176

£58.80 · 79% less

Fs39 Hz +8%

Qts0.37 –

Vas27 L −25%

BL7.7 T·m +4%

Xmax5.5 mm −39%

Sensitivity87.6 dB –

CIAREHWB160

£65.31 · 77% less

Fs43 Hz +19%

Qts0.37 –

Vas28 L −23%

BL7.3 T·m –

Xmax4.5 mm −50%

Sensitivity89.4 dB +1.4

REDCATT8FR

£66.10 · 77% less

Fs53 Hz +47%

Qts0.38 –

Vas36.8 L –

BL7.9 T·m +6%

Xmax5.8 mm −36%

Sensitivity93.4 dB +5.4

CIAREHWB200

£72.01 · 75% less

Fs32 Hz −11%

Qts0.38 –

Vas57 L +57%

BL7.3 T·m –

Xmax7 mm −22%

Sensitivity88.8 dB +0.8

Dayton AudioDCS205-4

£75.27 · 74% less

Fs32 Hz −10%

Qts0.37 –

Vas27 L −25%

BL10.7 T·m +45%

Xmax8.8 mm –

Sensitivity85.6 dB −2.4

REDCATT8FHM

£83.69 · 71% less

Fs38 Hz +6%

Qts0.39 –

Vas32.1 L −11%

BL8.2 T·m +11%

Xmax5 mm −44%

Sensitivity88.4 dB –

WavecorWF182BD12

£118.19 · 58% less

Fs30 Hz −18%

Qts0.37 –

Vas32.4 L −10%

BL8.2 T·m +11%

Xmax5.5 mm −39%

Sensitivity85.4 dB −2.6

SB AcousticsMW16P-12

£146.49 · 49% less

Fs31 Hz −15%

Qts0.37 –

Vas47.3 L +31%

BL7.4 T·m –

Xmax6.2 mm −31%

Sensitivity87.3 dB −0.7

SEASH1794-08 FEA18RCZ

£152.39 · 46% less

Fs42 Hz +17%

Qts0.39 –

Vas31 L −14%

BL6.6 T·m −11%

Xmax3 mm −67%

Sensitivity89.4 dB +1.4

MarkaudioMA200-M MULTI

£156.00 · 45% less

Fs33 Hz −8%

Qts0.35 −9%

Vas65.2 L +80%

BL8.5 T·m +15%

Xmax9 mm –

Sensitivity89.6 dB +1.6

Scanspeak18W/8542-10

£157.04 · 45% less

Fs43 Hz +19%

Qts0.35 −8%

Vas26 L −28%

BL6.9 T·m −7%

Xmax6.5 mm −28%

Sensitivity88.7 dB +0.7

WavecorWF182BD20

£188.39 · 34% less

Fs30 Hz −18%

Qts0.37 –

Vas32.4 L −10%

BL8.2 T·m +11%

Xmax5.5 mm −39%

Sensitivity85.4 dB −2.6

WavecorWF223BD01

£205.39 · 28% less

Fs33 Hz −9%

Qts0.39 –

Vas45 L +24%

BL7.7 T·m +4%

Xmax6.5 mm −28%

Sensitivity87.9 dB –

Scanspeak18WU/4747T00

£288.83 · 1% more

Fs36 Hz –

Qts0.35 −8%

Vas36 L –

BL5.9 T·m −20%

Xmax9 mm –

Sensitivity88.4 dB –

Scanspeak18WU/8741T00

£300.68 · 6% more

Fs35 Hz –

Qts0.39 –

Vas37.1 L –

BL7.3 T·m –

Xmax9 mm –

Sensitivity87.6 dB –

Scanspeak18WU/4741T00

£304.20 · 7% more

Fs34 Hz −6%

Qts0.36 −5%

Vas38.4 L +6%

BL5.9 T·m −20%

Xmax9 mm –

Sensitivity87.9 dB –

AccutonC158-8-085

£326.51 · 15% more

Fs37 Hz –

Qts0.36 −5%

Vas27.3 L −25%

BL7.7 T·m +4%

Xmax5 mm −44%

Sensitivity87.5 dB −0.5

PurifiPTT6.5X08-NAA-08

£393.49 · 38% more

Fs34 Hz −6%

Qts0.40 +5%

Vas20.4 L −44%

BL9 T·m +22%

Xmax9.8 mm +9%

Sensitivity84.8 dB −3.2

SEASE0117-08 W19NX004

£502.34 · 76% more

Fs33 Hz −8%

Qts0.39 –

Vas33 L −9%

BL7.9 T·m +7%

Xmax7 mm −22%

Sensitivity86.5 dB −1.5

PurifiPTT8.0X04-NAB-01

£586.08 · 106% more

Fs26 Hz −28%

Qts0.36 −5%

Vas70.4 L +94%

BL8 T·m +8%

Xmax9.3 mm +3%

Sensitivity87.2 dB −0.8

KartesianWOM155_VKI-C

No current price

Fs38 Hz +6%

Qts0.37 –

Vas17.9 L −51%

BL7.1 T·m −4%

Xmax10 mm +11%

Sensitivity86 dB −2

SEASE0096-08 W18NX003

No current price

Fs35 Hz –

Qts0.34 −11%

Vas31 L −14%

BL7.4 T·m –

Xmax7 mm −22%

Sensitivity87.5 dB −0.5

KartesianSUB185_VKI

No current price

Fs28 Hz −22%

Qts0.41 +8%

Vas38.6 L +7%

BL6.9 T·m −6%

Xmax15 mm +67%

Sensitivity84.8 dB −3.2

PurifiPTT6.5X04-NAA-08

No current price

Fs32 Hz −11%

Qts0.35 −8%

Vas20.5 L −43%

BL7.8 T·m +5%

Xmax9.8 mm +9%

Sensitivity84.6 dB −3.4

Audio Technology6 A 77 20 06 SD

No current price

Fs34 Hz −6%

Qts0.32 −16%

Vas44 L +22%

BL8 T·m +8%

Xmax8 mm −11%

Sensitivity88.6 dB +0.6

RS SpeakersW 174.38 FIBONACCI

No current price

Fs38 Hz +4%

Qts0.38 –

Vas22.9 L −37%

BL7.2 T·m –

Xmax6 mm −33%

Sensitivity87 dB −1

CIARECME201

No current price

Fs60 Hz +67%

Qts0.40 +5%

Vas21.5 L −41%

BL7.5 T·m –

Xmax4.5 mm −50%

Sensitivity92.3 dB +4.3

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
Falcon Acoustics Checked 26 Oct 2026 · Source: inc VAT · 20%	£304.08, the lowest price		In stock	Visit shop at Falcon Acoustics
Willys-Hifi Checked 26 Oct 2026 · Source: ex VAT · 20%	£314.35	3.4% above the lowest price	Stock not listed	Visit shop at Willys-Hifi
Wilmslow Audio Checked 26 Oct 2026 · Source: inc VAT · 20%	£363.41	20% above the lowest price	Stock not listed	Visit shop at Wilmslow Audio
Lautsprechershop Checked 26 Oct 2026 · Ships from Germany · 8 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£282.59		Special order	Visit shop at Lautsprechershop
SoundImports Checked 26 Oct 2026 · Ships from Netherlands · Source: inc VAT Import VAT and duty may apply	£284.64		6 in stock	Visit shop at SoundImports

Best price over time

Tracked since 1 Apr

Recent changes

1 OctWillys-Hifi£321.95 → £314.35Down 2.4% from £321.95
30 SepWillys-Hifi£320.95 → £321.95Up 0.3% from £320.95
29 SepWillys-Hifi£321.95 → £320.95Down 0.3% from £321.95