SB AcousticsSB12PAC25-4
£23.67 · 57% less, betterFs53 Hz +5%
Qts0.31 +15%, worse
Vas5.3 L −35%, better
BL4.3 T·m –
Xmax5 mm +67%, better
Sensitivity85.7 dB −1.7
5-inch LF driver · Discovery series · 25 mm voice coil · 40 W
Scanspeak 12W/4524G00 4Ω
4 Ω
£61.74
3.1%Falcon Acoustics · In stock · All 6 offers
- Fs
- 50Hz
- Xmax
- 3mm
- SPL
- 87dB
- Pe
- 40W
- BL
- 4.4T·m
- Vd
- 18cm³
- Qts
- 0.27
- Vas
- 8L
Scanspeak 12W/4524G00 is a 5-inch 4 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 50 Hz, Qts 0.27, Vas 8.2 L, Xmax 3 mm, sensitivity 87.4 dB, plus 18 cm³ Vd and 167 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 £55.26.
The published T/S values agree with each other
Thiele/Small
- Fs
- 50Hz
- Qts
- 0.27
- Qes
- 0.30
- Qms
- 3.4
- Vas
- 8.2L
- Re
- 3.1Ω
- Le
- 0.40mH
Motor and cone
- BL
- 4.4T·m
- Sd
- 59cm²
- Mms
- 6g
- Xmax
- 3mm
- Vd †
- 18cm³
- Voice coil
- 25mm
Power and response
- Sensitivity †
- 87.4dB
- Manufacturer sensitivity
- 89dB
- Power
- 40W
- Impedance
- 4Ω
- Min. impedance
- 3.9Ω
- EBP †
- 167 · Leans vented
Size and mounting
- Diameter
- 120mm
Other published values
- Cms
- 1.67mm/N
- Rms
- 0.57kg/s
- Xmech
- 9
- Power Peak
- 70
Sensitivity shows 87.4 dB, calculated from the T/S values. Scanspeak publishes 89.0 dB, 1.6 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 5″
- BL
- 4.4T·m
- Fs
- 50Hz
- Le
- 0.40mH
- Re
- 3.1Ω
- Sd
- 59cm²
- Cms
- 1.67mm/N
- Mms
- 6g
- Qes
- 0.30
- Qms
- 3.4
- Qts
- 0.27
- Rms
- 0.57kg/s
- SPL
- 87.4dB
- Vas
- 8.2L
- Xmax
- 3mm
- Xmech
- 9
- Power
- 40W
- Impedance
- 4Ω
- Power Peak
- 70
- Sensitivity
- 89dB
- Calculated sensitivity †
- 87.4dB
- Manufacturer sensitivity
- 89dB
- Min. impedance
- 3.9Ω
- Voice coil
- 25mm
- Diameter
- 120mm
02
Compare
Same-size drivers, compared with the 12W/4524G00. Clear differences are green when better and red when worse.
This driver12W/4524G00
Best price
£55.26
Fs
50 Hz
Qts
0.27
Vas
8.2 L
BL
4.4 T·m
Xmax
3 mm
Sensitivity
87.4 dB
Power
40 W
SB AcousticsSB12PACR25-4
£23.67 · 57% less, betterFs53 Hz +5%
Qts0.31 +15%, worse
Vas5.3 L −35%, better
BL4.3 T·m –
Xmax5 mm +67%, better
Sensitivity85.7 dB −1.7
SB AcousticsSB13PFCR25-4-COAX
£44.29 · 20% less, betterFs43 Hz −14%, better
Qts0.27 –
Vas14.4 L +76%, worse
BL5.1 T·m +16%, better
Xmax4.7 mm +55%, better
Sensitivity87.8 dB –
SB AcousticsSB13PFC25-4-COAX
£46.01 · 17% less, betterFs43 Hz −14%, better
Qts0.27 –
Vas14.4 L +76%, worse
BL5.1 T·m +16%, better
Xmax4.7 mm +55%, better
Sensitivity87.8 dB –
SB AcousticsSB15MFC30-4
£48.66 · 12% less, betterFs36 Hz −29%, better
Qts0.28 +4%
Vas19.4 L +137%, worse
BL4.8 T·m +9%
Xmax5 mm +67%, better
Sensitivity86.6 dB −0.8
SB AcousticsSB15NRX2C30-4
£49.12 · 11% less, betterFs35 Hz −31%, better
Qts0.28 +4%
Vas20.5 L +150%, worse
BL4.7 T·m +7%
Xmax5 mm +67%, better
Sensitivity86.5 dB −0.9
Dayton AudioCF120-4
£52.29 · 5% less, betterFs53 Hz +6%
Qts0.28 +4%
Vas4.9 L −41%, better
BL4.9 T·m +12%, better
Xmax3.5 mm +17%, better
Sensitivity85.6 dB −1.8
Scanspeak12W/8524G00
£54.43 · 2% lessFs52 Hz +4%
Qts0.32 +19%, worse
Vas8.2 L –
BL5.4 T·m +23%, better
Xmax3 mm –
Sensitivity87.2 dB –
SB AcousticsSB12CACS25-4
£58.31 · 6% more, worseFs51 Hz –
Qts0.31 +15%, worse
Vas5.7 L −30%, better
BL4.3 T·m –
Xmax5 mm +67%, better
Sensitivity85.6 dB −1.8
FaitalPRO5PR120
£70.33 · 27% more, worseFs100 Hz +100%, worse
Qts0.27 –
Vas4.2 L −49%, better
BL10 T·m +127%, better
Xmax3.1 mm +3%
Sensitivity93.8 dB +6.4, better
B&C5FG44
£74.52 · 35% more, worseFs63 Hz +26%, worse
Qts0.27 –
Vas6.3 L −23%, better
BL10 T·m +127%, better
Xmax3 mm –
Sensitivity89.2 dB +1.8
FaitalPRO6RS140
£84.31 · 53% more, worseFs65 Hz +30%, worse
Qts0.27 –
Vas9.3 L +13%, worse
BL11 T·m +150%, better
Xmax5.6 mm +87%, better
Sensitivity91.6 dB +4.2, better
SB AcousticsMR13P-4
£115.00 · 108% more, worseFs41 Hz −18%, better
Qts0.23 −15%, better
Vas19.4 L +137%, worse
BL4.3 T·m –
Xmax3 mm –
Sensitivity89.3 dB +1.9
SB AcousticsMR13PNW-4
£115.00 · 108% more, worseFs41 Hz −18%, better
Qts0.23 −15%, better
Vas19.4 L +137%, worse
BL4.3 T·m –
Xmax3 mm –
Sensitivity89.3 dB +1.9
SB AcousticsMW13P-4
£139.69 · 153% more, worseFs41 Hz −18%, better
Qts0.27 –
Vas14.6 L +78%, worse
BL4.9 T·m +11%, better
Xmax5 mm +67%, better
Sensitivity87.4 dB –
SB AcousticsMW13PNW-4
£139.69 · 153% more, worseFs41 Hz −18%, better
Qts0.27 –
Vas14.6 L +78%, worse
BL4.9 T·m +11%, better
Xmax5 mm +67%, better
Sensitivity87.4 dB –
Scanspeak15M/4531K00
£150.70 · 173% more, worseFs42 Hz −16%, better
Qts0.27 –
Vas16 L +95%, worse
BL6 T·m +36%, better
Xmax3 mm –
Sensitivity88.3 dB +0.9
SB AcousticsMR16P-4
£159.05 · 188% more, worseFs31 Hz −38%, better
Qts0.25 −7%
Vas47.2 L +476%, worse
BL5.2 T·m +18%, better
Xmax3.1 mm +3%
Sensitivity89.4 dB +2, better
SB AcousticsMR16PNW-4
£159.05 · 188% more, worseFs31 Hz −38%, better
Qts0.25 −7%
Vas47.2 L +476%, worse
BL5.2 T·m +18%, better
Xmax3.1 mm +3%
Sensitivity89.4 dB +2, better
Tang BandW4-2315
£175.00 · 217% more, worseFs65 Hz +30%, worse
Qts0.29 +7%
Vas5.0 L −40%, better
BL6.2 T·m +41%, better
Xmax2.8 mm −7%
Sensitivity88.5 dB +1.1
SB AcousticsMR13TX-4
£251.15 · 354% more, worseFs44 Hz −12%, better
Qts0.27 –
Vas12.2 L +49%, worse
BL4.9 T·m +11%, better
Xmax3 mm –
Sensitivity87.7 dB –
Scanspeak12MU/8731T00
£263.71 · 377% more, worseFs66 Hz +32%, worse
Qts0.29 +7%
Vas5.8 L −29%, better
BL6.1 T·m +39%, better
Xmax3.4 mm +13%, better
Sensitivity89.3 dB +1.9
Scanspeak12MU/4731T00
£267.60 · 384% more, worseFs64 Hz +28%, worse
Qts0.24 −11%, better
Vas5.4 L −34%, better
BL5.1 T·m +16%, better
Xmax3.5 mm +17%, better
Sensitivity89.4 dB +2, better
Acoustic EleganceTD6M-8
No current priceFs76 Hz +52%, worse
Qts0.27 –
Vas9.2 L +12%, worse
BL10.6 T·m +141%, better
Xmax3 mm –
Sensitivity93.5 dB +6.1, better
PurifiPTT5.25M08-NAA-05
No current priceFs41 Hz −18%, better
Qts0.29 +7%
Vas9.4 L +15%, worse
BL9.5 T·m +116%, better
Xmax2.9 mm −3%
Sensitivity85.4 dB −2, worse
PurifiPTT4.0M04-NAC-03
No current priceFs48 Hz −4%
Qts0.28 +4%
Vas5 L −39%, better
BL5.9 T·m +34%, better
Xmax2.9 mm −3%
Sensitivity84.7 dB −2.7, worse
Tang BandW4-1798S
No current priceFs60 Hz +20%, worse
Qts0.30 +11%, worse
Vas7.4 L −10%
BL5.8 T·m +31%, better
Xmax3 mm –
Sensitivity88.4 dB +1
AccutonBD90-6-727
No current priceFs123 Hz +146%, worse
Qts0.28 +4%
Vas1.6 L −80%, better
BL10.7 T·m +143%, better
Xmax3 mm –
Sensitivity92 dB +4.6, better
PurifiPTT4.0M04-NFC-01
No current priceFs46 Hz −8%
Qts0.25 −7%
Vas5.4 L −34%, better
BL6 T·m +36%, better
Xmax2.9 mm −3%
Sensitivity84.9 dB −2.5, worse
PurifiPTT5.25M04-NAA-05
No current priceFs39 Hz −22%, better
Qts0.24 −11%, better
Vas9.9 L +21%, worse
BL8.1 T·m +84%, better
Xmax2.9 mm −3%
Sensitivity85.7 dB −1.7
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 53 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 |
|---|---|---|---|---|
Falcon Acoustics | £61.74, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £63.72 | 3.2% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
Hifisound Import VAT and duty may apply · under 7 working days | £56.67 | Back order (under 7 working days) | Visit shop at Hifisound | |
SoundImports Import VAT and duty may apply | £58.57 | 17 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£65.95 → £63.72Down 3.4% from £65.95
- 28 SepWillys-Hifi£64.95 → £65.95Up 1.5% from £64.95
- 23 SepWillys-Hifi£65.95 → £64.95Down 1.5% from £65.95