Dayton AudioGF180-4
£18.70 · 68% less, betterFs49 Hz −9%
Qts0.42 −7%
Vas16.5 L −19%, better
BL6.5 T·m –
Xmax4 mm +54%, better
Sensitivity88.1 dB −1.9
7-inch LF driver · Discovery series · 25 mm voice coil · 50 W
Scanspeak 18W/8424G00 8Ω
8 Ω
£66.12
5.7%Falcon Acoustics · In stock · All 6 offers
- Fs
- 54Hz
- Xmax
- 2.6mm
- SPL
- 90dB
- Pe
- 50W
- BL
- 6.6T·m
- Vd
- 36cm³
- Qts
- 0.45
- Vas
- 20L
Scanspeak 18W/8424G00 is a 7-inch 8 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 54 Hz, Qts 0.45, Vas 20.3 L, Xmax 2.6 mm, sensitivity 90 dB, plus 36 cm³ Vd and 106 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 £57.77.
The published T/S values agree with each other
Thiele/Small
- Fs
- 54Hz
- Qts
- 0.45
- Qes
- 0.51
- Qms
- 4.0
- Vas
- 20.3L
- Re
- 5.7Ω
- Le
- 0.69mH
Motor and cone
- BL
- 6.6T·m
- Sd
- 137cm²
- Mms
- 11g
- Xmax
- 2.6mm
- Vd †
- 36cm³
- Voice coil
- 25mm
Power and response
- Sensitivity †
- 90dB
- Manufacturer sensitivity
- 89.5dB
- Power
- 50W
- Impedance
- 8Ω
- Min. impedance
- 6.4Ω
- EBP †
- 106 · Leans vented
Size and mounting
- Diameter
- 180mm
Other published values
- Cms
- 0.77mm/N
- Rms
- 0.95kg/s
- Xmech
- 8
- Power Peak
- 110
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 7″
- BL
- 6.6T·m
- Fs
- 54Hz
- Le
- 0.69mH
- Re
- 5.7Ω
- Sd
- 137cm²
- Cms
- 0.77mm/N
- Mms
- 11g
- Qes
- 0.51
- Qms
- 4.0
- Qts
- 0.45
- Rms
- 0.95kg/s
- SPL
- 90dB
- Vas
- 20.3L
- Xmax
- 2.6mm
- Xmech
- 8
- Power
- 50W
- Impedance
- 8Ω
- Power Peak
- 110
- Sensitivity
- 89.5dB
- Calculated sensitivity †
- 90dB
- Manufacturer sensitivity
- 89.5dB
- Min. impedance
- 6.4Ω
- Voice coil
- 25mm
- Diameter
- 180mm
02
Compare
Same-size drivers, compared with the 18W/8424G00. Clear differences are green when better and red when worse.
This driver18W/8424G00
Best price
£57.77
Fs
54 Hz
Qts
0.45
Vas
20.3 L
BL
6.6 T·m
Xmax
2.6 mm
Sensitivity
90 dB
Power
50 W
PeerlessSDS-P830657
£25.08 · 57% less, betterFs48 Hz −11%, better
Qts0.47 +4%
Vas20.1 L –
BL6.9 T·m +5%
Xmax5.5 mm +110%, better
Sensitivity88 dB −2, worse
MonacorSP-167E
£26.12 · 55% less, betterFs62 Hz +15%, worse
Qts0.41 −9%
Vas17.9 L −12%, better
BL5.4 T·m −18%, worse
Xmax2.5 mm −4%
Sensitivity91.5 dB +1.5
VisatonBG 20
£30.00 · 48% less, betterFs38 Hz −30%, better
Qts0.44 –
Vas110 L +442%, worse
BL6.1 T·m −8%
Xmax2 mm −23%, worse
Sensitivity92.8 dB +2.8, better
CIAREHW159
£31.82 · 45% less, betterFs53 Hz –
Qts0.49 +9%
Vas19.4 L −4%
BL6.3 T·m −4%
Xmax5.8 mm +123%, better
Sensitivity88.8 dB −1.2
PRV Audio8MR500-4
£37.34 · 35% less, betterFs78 Hz +45%, worse
Qts0.46 –
Vas20.8 L –
BL6.5 T·m –
Xmax3.3 mm +25%, better
Sensitivity95.2 dB +5.2, better
Dayton AudioDC160-4
£37.60 · 35% less, betterFs39 Hz −28%, better
Qts0.43 −4%
Vas15 L −26%, better
BL7.0 T·m +6%
Xmax3.4 mm +31%, better
Sensitivity84.6 dB −5.4, worse
REDCATT61FHM-1
£39.86 · 31% less, betterFs37 Hz −31%, better
Qts0.49 +9%
Vas28.2 L +39%, worse
BL6.6 T·m –
Xmax6.3 mm +142%, better
Sensitivity86.4 dB −3.6, worse
SB AcousticsSB17NRX2C35-8
£55.41 · 4% lessFs37 Hz −32%, better
Qts0.42 −7%
Vas27 L +33%, worse
BL6.3 T·m −5%
Xmax5.5 mm +112%, better
Sensitivity86.5 dB −3.5, worse
Sica6.5 H 1.5 CP
£56.02 · 3% lessFs45 Hz −16%, better
Qts0.42 −7%
Vas20.2 L –
BL7.0 T·m +6%
Xmax6 mm +131%, better
Sensitivity88.2 dB −1.8
Scanspeak18W/8434G00
£57.57 · Same priceFs50 Hz −7%
Qts0.43 −4%
Vas19.5 L −4%
BL7.2 T·m +9%
Xmax4.2 mm +62%, better
Sensitivity89.3 dB −0.7
WavecorWF168WA06
£57.60 · Same priceFs41 Hz −24%, better
Qts0.50 +11%, worse
Vas27.7 L +36%, worse
BL6.4 T·m −3%
Xmax3 mm +15%, better
Sensitivity87.5 dB −2.5, worse
WavecorWF168WA02
£60.59 · 5% moreFs49 Hz −9%
Qts0.52 +16%, worse
Vas24.6 L +21%, worse
BL6.4 T·m −3%
Xmax3 mm +15%, better
Sensitivity89.2 dB −0.8
Sica6 L 1.5 SL
£61.96 · 7% more, worseFs59 Hz +9%
Qts0.39 −13%, better
Vas11 L −46%, better
BL7.5 T·m +14%, better
Xmax2.5 mm −4%
Sensitivity88.8 dB −1.2
MonacorSPH-170
£80.38 · 39% more, worseFs38 Hz −30%, better
Qts0.44 –
Vas37 L +82%, worse
BL5.9 T·m −11%, worse
Xmax3 mm +15%, better
Sensitivity87.7 dB −2.3, worse
WavecorWF166TU02
£96.50 · 67% more, worseFs50 Hz −7%
Qts0.48 +7%
Vas22.3 L +10%
BL5 T·m −24%, worse
Xmax3 mm +15%, better
Sensitivity89.5 dB −0.5
WavecorWF168WA01
£96.71 · 67% more, worseFs48 Hz −12%, better
Qts0.43 −4%
Vas24.6 L +21%, worse
BL5.1 T·m −23%, worse
Xmax3 mm +15%, better
Sensitivity89.6 dB –
Tang BandW8-2145
£150.67 · 161% more, worseFs40 Hz −26%, better
Qts0.45 –
Vas67.7 L +233%, worse
BL6.6 T·m –
Xmax3 mm +15%, better
Sensitivity90.5 dB +0.5
£376.75 · 552% more, worse
Fs34 Hz −37%, better
Qts0.42 −7%
Vas30 L +48%, worse
BL6.6 T·m –
Xmax5 mm +92%, better
Sensitivity85.8 dB −4.2, worse
AccutonC168-6-890
£921.00 · 1494% more, worseFs41 Hz −24%, better
Qts0.44 –
Vas15 L −26%, better
BL7.5 T·m +14%, better
Xmax5 mm +92%, better
Sensitivity85.3 dB −4.7, worse
HiViS6.5
No current priceFs47 Hz −13%, better
Qts0.42 −7%
Vas18.4 L −9%
BL6.4 T·m −3%
Xmax5.8 mm +123%, better
Sensitivity88.1 dB −1.9
HiViE6.5N
No current priceFs43 Hz −20%, better
Qts0.40 −11%, better
Vas21 L +3%
BL7.1 T·m +8%
Xmax4.3 mm +63%, better
Sensitivity87.2 dB −2.8, worse
HiViF6N
No current priceFs48 Hz −11%, better
Qts0.43 −4%
Vas19.1 L −6%
BL7.3 T·m +11%, better
Xmax4.5 mm +73%, better
Sensitivity88.7 dB −1.3
HiViS6.5RMKII
No current priceFs52 Hz −4%
Qts0.48 +7%
Vas15.7 L −23%, better
BL6.4 T·m −3%
Xmax5.8 mm +123%, better
Sensitivity88.1 dB −1.9
Tang BandW6-658I
No current priceFs45 Hz −17%, better
Qts0.44 –
Vas28.3 L +39%, worse
BL6.3 T·m −4%
Xmax4.1 mm +58%, better
Sensitivity89.2 dB −0.8
Dayton AudioCFC180-4
No current priceFs52 Hz −4%
Qts0.43 −4%
Vas11.5 L −43%, better
BL6.8 T·m +3%
Xmax4 mm +54%, better
Sensitivity87.1 dB −2.9, worse
WavecorWF166TU01
No current priceFs50 Hz −7%
Qts0.45 –
Vas23.2 L +14%, worse
BL5.2 T·m −21%, worse
Xmax3.5 mm +35%, better
Sensitivity89.9 dB –
HiViSS6.5R
No current priceFs42 Hz −22%, better
Qts0.39 −13%, better
Vas21.6 L +6%
BL6.5 T·m –
Xmax5.8 mm +123%, better
Sensitivity87.7 dB −2.3, worse
HiViS8-98
No current priceFs34 Hz −37%, better
Qts0.44 –
Vas64.9 L +220%, worse
BL6.6 T·m –
Xmax5.8 mm +123%, better
Sensitivity88.9 dB −1.1
PRV Audio8MR360-4
No current priceFs98 Hz +81%, worse
Qts0.51 +13%, worse
Vas14.4 L −29%, better
BL6.8 T·m +4%
Xmax4 mm +54%, better
Sensitivity96.1 dB +6.1, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.5 out of 54 ratings · 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 | £66.12, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £70.09 | 6.0% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £62.76 | 24 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£71.95 → £70.09Down 2.6% from £71.95
- 4 AugWillys-Hifi£69.95 → £71.95Up 2.9% from £69.95
- 21 JulWillys-Hifi£70.95 → £69.95Down 1.4% from £70.95