SB AcousticsSB20PFCR30-8
£33.07 · 78% less, betterFs34 Hz +36%, worse
Qts0.37 +85%, worse
Vas66.2 L −3%
BL7.7 T·m −8%
Xmax5.8 mm −12%, worse
Sensitivity89.8 dB +0.9
7-inch LF driver · Classic series · 42 mm voice coil · 100 W
Scanspeak 18W/8545-01 8Ω
8 Ω
- Fs
- 25Hz
- Xmax
- 6.5mm
- SPL
- 89dB
- Pe
- 100W
- BL
- 8.4T·m
- Vd
- 94cm³
- Qts
- 0.20
- Vas
- 69L
Scanspeak 18W/8545-01 is a 7-inch 8 ohm LF driver rated at 100 W RMS. The validated T/S data includes Fs 25 Hz, Qts 0.20, Vas 68.6 L, Xmax 6.5 mm, sensitivity 88.9 dB, plus 94 cm³ Vd and 114 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 £149.18.
The published T/S values agree with each other
Thiele/Small
- Fs
- 25Hz
- Qts
- 0.20
- Qes
- 0.22
- Qms
- 1.6
- Vas
- 68.6L
- Re
- 5.7Ω
- Le
- 0.39mH
Motor and cone
- BL
- 8.4T·m
- Sd
- 145cm²
- Mms
- 18g
- Xmax
- 6.5mm
- Vd †
- 94cm³
- Voice coil
- 42mm
Power and response
- Sensitivity †
- 88.9dB
- Manufacturer sensitivity
- 88dB
- Power
- 100W
- Impedance
- 8Ω
- Min. impedance
- 6.2Ω
- EBP †
- 114 · Leans vented
Size and mounting
- Diameter
- 180mm
Other published values
- Cms
- 2.30mm/N
- Rms
- 1.80kg/s
- Xmech
- 10
- Power Peak
- 120
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 7″
- BL
- 8.4T·m
- Fs
- 25Hz
- Le
- 0.39mH
- Re
- 5.7Ω
- Sd
- 145cm²
- Cms
- 2.30mm/N
- Mms
- 18g
- Qes
- 0.22
- Qms
- 1.6
- Qts
- 0.20
- Rms
- 1.80kg/s
- SPL
- 88.9dB
- Vas
- 68.6L
- Xmax
- 6.5mm
- Xmech
- 10
- Power
- 100W
- Impedance
- 8Ω
- Power Peak
- 120
- Sensitivity
- 88dB
- Calculated sensitivity †
- 88.9dB
- Manufacturer sensitivity
- 88dB
- Min. impedance
- 6.2Ω
- Voice coil
- 42mm
- Diameter
- 180mm
02
Compare
Same-size drivers, compared with the 18W/8545-01. Clear differences are green when better and red when worse.
This driver18W/8545-01
Best price
£149.18
Fs
25 Hz
Qts
0.20
Vas
68.6 L
BL
8.4 T·m
Xmax
6.5 mm
Sensitivity
88.9 dB
Power
100 W
SB AcousticsSB20PFC30-8
£35.17 · 76% less, betterFs34 Hz +36%, worse
Qts0.37 +85%, worse
Vas66.2 L −3%
BL7.7 T·m −8%
Xmax5.7 mm −13%, worse
Sensitivity89.8 dB +0.9
CIARECW162
£47.61 · 68% less, betterFs40 Hz +60%, worse
Qts0.21 +5%
Vas26 L −62%, better
BL7.4 T·m −12%, worse
Xmax7 mm +8%
Sensitivity90.6 dB +1.7
CIAREHWB200
£63.09 · 58% less, betterFs32 Hz +28%, worse
Qts0.39 +95%, worse
Vas59 L −14%, better
BL8.9 T·m +6%
Xmax7 mm +8%
Sensitivity88.8 dB –
Dayton AudioRS225-8
£67.31 · 55% less, betterFs28 Hz +13%, worse
Qts0.38 +90%, worse
Vas56.8 L −17%, better
BL9.1 T·m +8%
Xmax7 mm +8%
Sensitivity86.1 dB −2.8, worse
Dayton AudioRS225P-8A
£87.88 · 41% less, betterFs32 Hz +26%, worse
Qts0.34 +70%, worse
Vas68.8 L –
BL8.5 T·m –
Xmax7 mm +8%
Sensitivity88.8 dB –
SB AcousticsSB23NBACS45-8
£97.88 · 34% less, betterFs25 Hz –
Qts0.40 +100%, worse
Vas93.4 L +36%, worse
BL7.9 T·m −6%
Xmax6.5 mm –
Sensitivity87.3 dB −1.6
PeerlessNSM-0620R01-04
£100.99 · 32% less, betterFs88 Hz +252%, worse
Qts0.22 +10%
Vas4.2 L −94%, better
BL11.5 T·m +37%, better
Xmax6.8 mm +4%
Sensitivity92.9 dB +4, better
SB AcousticsSB23CACS45-8
£114.02 · 24% less, betterFs25 Hz –
Qts0.40 +100%, worse
Vas87 L +27%, worse
BL7.9 T·m −6%
Xmax6.5 mm –
Sensitivity86.9 dB −2, worse
B&C8FW51
£116.87 · 22% less, betterFs74 Hz +196%, worse
Qts0.21 +5%
Vas12 L −83%, better
BL17.7 T·m +111%, better
Xmax6 mm −8%
Sensitivity95.7 dB +6.8, better
VisatonGF 200
£132.67 · 11% less, betterFs30 Hz +20%, worse
Qts0.34 +70%, worse
Vas68 L –
BL9.2 T·m +10%
Xmax6 mm −8%
Sensitivity89 dB –
B&C8MDN51
£136.46 · 9% less, betterFs70 Hz +180%, worse
Qts0.20 –
Vas16 L −77%, better
BL15.3 T·m +82%, better
Xmax6 mm −8%
Sensitivity96.2 dB +7.3, better
Scanspeak18W/8545K00
£144.00 · 3% lessFs28 Hz +12%, worse
Qts0.28 +40%, worse
Vas46.4 L −32%, better
BL8.2 T·m –
Xmax6.5 mm –
Sensitivity87.3 dB −1.6
VisatonAL 200
£150.67 · Same priceFs32 Hz +28%, worse
Qts0.35 +75%, worse
Vas77 L +12%, worse
BL8.8 T·m +5%
Xmax7 mm +8%
Sensitivity90.1 dB +1.2
SB AcousticsMW19P-4
£165.40 · 11% more, worseFs29 Hz +16%, worse
Qts0.24 +20%, worse
Vas61 L −11%, better
BL6.5 T·m −23%, worse
Xmax6.8 mm +5%
Sensitivity89.6 dB +0.7
SB AcousticsMW19P-8
£167.42 · 12% more, worseFs30 Hz +18%, worse
Qts0.29 +45%, worse
Vas61 L −11%, better
BL7.7 T·m −8%
Xmax6.7 mm +3%
Sensitivity88.9 dB –
SB AcousticsMW19PNW-4
£168.40 · 13% more, worseFs29 Hz +16%, worse
Qts0.24 +20%, worse
Vas61 L −11%, better
BL6.5 T·m −23%, worse
Xmax6.8 mm +5%
Sensitivity89.6 dB +0.7
SB AcousticsMW19PNW-8
£170.81 · 15% more, worseFs30 Hz +18%, worse
Qts0.29 +45%, worse
Vas61 L −11%, better
BL7.7 T·m −8%
Xmax6.7 mm +3%
Sensitivity88.9 dB –
SEASH1471-08 CA22RNY
£171.54 · 15% more, worseFs34 Hz +36%, worse
Qts0.30 +50%, worse
Vas82 L +20%, worse
BL8.5 T·m –
Xmax6 mm −8%
Sensitivity91.5 dB +2.6, better
VoltBM165.1
£172.80 · 16% more, worseFs30 Hz +20%, worse
Qts0.24 +20%, worse
Vas40.8 L −41%, better
BL9.8 T·m +17%, better
Xmax6.3 mm −3%
Sensitivity88.3 dB −0.6
Scanspeak22W/4851T00
£293.02 · 96% more, worseFs21 Hz −16%, better
Qts0.22 +10%
Vas126 L +84%, worse
BL8.2 T·m –
Xmax9 mm +38%, better
Sensitivity89.1 dB –
£309.76 · 108% more, worse
Fs33 Hz +32%, worse
Qts0.30 +50%, worse
Vas72 L +5%
BL8.8 T·m +5%
Xmax7 mm +8%
Sensitivity90.6 dB +1.7
Scanspeak21WE/4542T00
£669.81 · 349% more, worseFs38 Hz +52%, worse
Qts0.28 +40%, worse
Vas54 L −21%, better
BL8.2 T·m –
Xmax7.2 mm +11%, better
Sensitivity92 dB +3.1, better
CelestionNTR08-2009D
No current priceFs71 Hz +186%, worse
Qts0.21 +5%
Vas11.7 L −83%, better
BL18.0 T·m +115%, better
Xmax6.5 mm –
Sensitivity94.6 dB +5.7, better
LavoceWAF082.01
No current priceFs76 Hz +204%, worse
Qts0.21 +5%
Vas10.2 L −85%, better
BL17.9 T·m +114%, better
Xmax5.8 mm −11%, worse
Sensitivity95.1 dB +6.2, better
HiViSS8II
No current priceFs32 Hz +28%, worse
Qts0.32 +60%, worse
Vas61.6 L −10%, better
BL8.5 T·m –
Xmax5.8 mm −11%, worse
Sensitivity89.8 dB +0.9
SB AcousticsMW19PF-4
No current priceFs29 Hz +16%, worse
Qts0.27 +35%, worse
Vas62.7 L −9%
BL6.1 T·m −27%, worse
Xmax6.5 mm –
Sensitivity89.4 dB +0.5
SB AcousticsMW19PF-8
No current priceFs30 Hz +20%, worse
Qts0.34 +70%, worse
Vas63 L −8%
BL7 T·m −17%, worse
Xmax6.5 mm –
Sensitivity88.7 dB –
RS SpeakersW 220.50 FIBONACCI
No current priceFs33 Hz +34%, worse
Qts0.36 +80%, worse
Vas55.6 L −19%, better
BL8.6 T·m –
Xmax6 mm −8%
Sensitivity89.3 dB –
CIAREHWB205
No current priceFs28 Hz +12%, worse
Qts0.29 +45%, worse
Vas79 L +15%, worse
BL9.3 T·m +10%, better
Xmax7 mm +8%
Sensitivity89.6 dB +0.7
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 512 ratings · Checked 25 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 |
|---|---|---|---|---|
Hifi Collective | £149.18, the lowest price | 2 in stock | Visit shop at Hifi Collective | |
Falcon Acoustics | £171.54 | 15% above the lowest price | In stock | Visit shop at Falcon Acoustics |
Willys-Hifi | £180.83 | 21% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
Wilmslow Audio | £203.05 | 36% above the lowest price | Stock not listed | Visit shop at Wilmslow Audio |
SoundImports Import VAT and duty may apply | £159.05 | 6.6% above the lowest price | 36 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£185.95 → £180.83Down 2.8% from £185.95
- 30 SepWillys-Hifi£184.95 → £185.95Up 0.5% from £184.95
- 16 SepWillys-Hifi£185.95 → £184.95Down 0.5% from £185.95