CIAREHW129
£23.44 · 91% less, betterFs75 Hz +17%, worse
Qts0.55 +129%, worse
Vas6.1 L +13%, worse
BL5.2 T·m –
Xmax3.9 mm +11%, better
Sensitivity87.3 dB −2.1, worse
5-inch LF driver · Illuminator series · 32 mm voice coil · 80 W
Scanspeak 12MU/4731T00 4Ω
4 Ω
£290.99
2.3%Willys-Hifi · All 3 offers
- Fs
- 64Hz
- Xmax
- 3.5mm
- SPL
- 89dB
- Pe
- 80W
- BL
- 5.1T·m
- Vd
- 20cm³
- Qts
- 0.24
- Vas
- 5L
Scanspeak 12MU/4731T00 is a 5-inch 4 ohm LF driver rated at 80 W RMS. The validated T/S data includes Fs 64 Hz, Qts 0.24, Vas 5.4 L, Xmax 3.5 mm, sensitivity 89.4 dB, plus 20 cm³ Vd and 246 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 £267.60.
The published T/S values agree with each other
Thiele/Small
- Fs
- 64Hz
- Qts
- 0.24
- Qes
- 0.26
- Qms
- 3.6
- Vas
- 5.4L
- Re
- 3.1Ω
- Le
- 0.11mH
Motor and cone
- BL
- 5.1T·m
- Sd
- 58cm²
- Mms
- 5g
- Xmax
- 3.5mm
- Vd †
- 20cm³
- Voice coil
- 32mm
Power and response
- Sensitivity †
- 89.4dB
- Manufacturer sensitivity
- 90dB
- Power
- 80W
- Impedance
- 4Ω
- Min. impedance
- 4.4Ω
- EBP †
- 246 · Leans vented
Size and mounting
- Diameter
- 120mm
Other published values
- Cms
- 1.15mm/N
- Rms
- 0.60kg/s
- Xmech
- 10
- Power Peak
- 150
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 5″
- BL
- 5.1T·m
- Fs
- 64Hz
- Le
- 0.11mH
- Re
- 3.1Ω
- Sd
- 58cm²
- Cms
- 1.15mm/N
- Mms
- 5g
- Qes
- 0.26
- Qms
- 3.6
- Qts
- 0.24
- Rms
- 0.60kg/s
- SPL
- 89.4dB
- Vas
- 5.4L
- Xmax
- 3.5mm
- Xmech
- 10
- Power
- 80W
- Impedance
- 4Ω
- Power Peak
- 150
- Sensitivity
- 90dB
- Calculated sensitivity †
- 89.4dB
- Manufacturer sensitivity
- 90dB
- Min. impedance
- 4.4Ω
- Voice coil
- 32mm
- Diameter
- 120mm
02
Compare
Same-size drivers, compared with the 12MU/4731T00. Clear differences are green when better and red when worse.
This driver12MU/4731T00
Best price
£267.60
Fs
64 Hz
Qts
0.24
Vas
5.4 L
BL
5.1 T·m
Xmax
3.5 mm
Sensitivity
89.4 dB
Power
80 W
B&C4NDS34
£43.54 · 84% less, betterFs79 Hz +23%, worse
Qts0.24 –
Vas2.6 L −52%, better
BL8.8 T·m +73%, better
Xmax3.8 mm +9%
Sensitivity89.1 dB –
PRV Audio6FR200
£47.27 · 82% less, betterFs112 Hz +75%, worse
Qts1.29 +438%, worse
Vas6.9 L +28%, worse
BL5.2 T·m –
Xmax3.5 mm –
Sensitivity90.4 dB +1
Dayton AudioCF120-4
£52.29 · 80% less, betterFs53 Hz −17%, better
Qts0.28 +17%, worse
Vas4.9 L −10%
BL4.9 T·m −3%
Xmax3.5 mm –
Sensitivity85.6 dB −3.8, worse
Scanspeak15W/4424G00
£53.55 · 80% less, betterFs46 Hz −28%, better
Qts0.24 –
Vas13.8 L +156%, worse
BL5.2 T·m –
Xmax2.8 mm −20%, worse
Sensitivity89.2 dB –
Scanspeak12W/4524G00
£55.26 · 79% less, betterFs50 Hz −22%, better
Qts0.27 +13%, worse
Vas8.2 L +52%, worse
BL4.4 T·m −14%, worse
Xmax3 mm −14%, worse
Sensitivity87.4 dB −2, worse
Tang BandW4-1320SIF
£57.77 · 78% less, betterFs75 Hz +17%, worse
Qts0.36 +50%, worse
Vas5.2 L −3%
BL5.3 T·m +4%
Xmax3 mm −14%, worse
Sensitivity89.2 dB –
FaitalPRO5PR120
£70.33 · 74% less, betterFs100 Hz +56%, worse
Qts0.27 +13%, worse
Vas4.2 L −22%, better
BL10 T·m +96%, better
Xmax3.1 mm −11%, worse
Sensitivity93.8 dB +4.4, better
B&C5FG44
£74.52 · 72% less, betterFs63 Hz –
Qts0.27 +13%, worse
Vas6.3 L +17%, worse
BL10 T·m +96%, better
Xmax3 mm −14%, worse
Sensitivity89.2 dB –
Beyma5P200ND
£90.20 · 66% less, betterFs77 Hz +20%, worse
Qts0.23 −4%
Vas4.8 L −11%, better
BL10.5 T·m +106%, better
Xmax5.7 mm +63%, better
Sensitivity91.6 dB +2.2, better
SB AcousticsMR13P-4
£115.00 · 57% less, betterFs41 Hz −36%, better
Qts0.23 −4%
Vas19.4 L +259%, worse
BL4.3 T·m −16%, worse
Xmax3 mm −14%, worse
Sensitivity89.3 dB –
SB AcousticsMR13PNW-4
£115.00 · 57% less, betterFs41 Hz −36%, better
Qts0.23 −4%
Vas19.4 L +259%, worse
BL4.3 T·m −16%, worse
Xmax3 mm −14%, worse
Sensitivity89.3 dB –
Scanspeak15M/4531K00
£150.70 · 44% less, betterFs42 Hz −34%, better
Qts0.27 +13%, worse
Vas16 L +196%, worse
BL6 T·m +18%, better
Xmax3 mm −14%, worse
Sensitivity88.3 dB −1.1
SB AcousticsMR16P-4
£159.05 · 41% less, betterFs31 Hz −52%, better
Qts0.25 +4%
Vas47.2 L +774%, worse
BL5.2 T·m –
Xmax3.1 mm −11%, worse
Sensitivity89.4 dB –
SB AcousticsMR16PNW-4
£159.05 · 41% less, betterFs31 Hz −52%, better
Qts0.25 +4%
Vas47.2 L +774%, worse
BL5.2 T·m –
Xmax3.1 mm −11%, worse
Sensitivity89.4 dB –
PRV Audio6MR600X-NDY
£188.35 · 30% less, betterFs95 Hz +49%, worse
Qts0.22 −8%
Vas5.6 L –
BL15.8 T·m +211%, better
Xmax3.5 mm –
Sensitivity95.4 dB +6, better
SB AcousticsMW13TX-4
£225.24 · 16% less, betterFs38 Hz −41%, better
Qts0.26 +8%
Vas16 L +196%, worse
BL5 T·m –
Xmax5 mm +43%, better
Sensitivity87.2 dB −2.2, worse
SB AcousticsMR13TX-4
£251.15 · 6% less, betterFs44 Hz −31%, better
Qts0.27 +13%, worse
Vas12.2 L +126%, worse
BL4.9 T·m −4%
Xmax3 mm −14%, worse
Sensitivity87.7 dB −1.7
Scanspeak12MU/8731T00
£263.71 · 1% lessFs66 Hz +3%
Qts0.29 +21%, worse
Vas5.8 L +7%
BL6.1 T·m +20%, better
Xmax3.4 mm –
Sensitivity89.3 dB –
Sica6 CX 2 PL P
No current priceFs85 Hz +33%, worse
Qts0.24 –
Vas5.4 L –
BL12.8 T·m +151%, better
Xmax3.5 mm –
Sensitivity92.9 dB +3.5, better
PurifiPTT4.0M04-NFC-01
No current priceFs46 Hz −28%, better
Qts0.25 +4%
Vas5.4 L –
BL6 T·m +18%, better
Xmax2.9 mm −17%, worse
Sensitivity84.9 dB −4.5, worse
PurifiPTT4.0M04-NAC-03
No current priceFs48 Hz −25%, better
Qts0.28 +17%, worse
Vas5 L −7%
BL5.9 T·m +16%, better
Xmax2.9 mm −17%, worse
Sensitivity84.7 dB −4.7, worse
Tang BandW4-657D
No current priceFs70 Hz +9%
Qts0.32 +33%, worse
Vas5.6 L +4%
BL5.6 T·m +10%, better
Xmax3.3 mm −6%
Sensitivity89.4 dB –
PRV Audio6MR600X-NDY-4
No current priceFs95 Hz +49%, worse
Qts0.19 −21%, better
Vas5.2 L −4%
BL12.7 T·m +148%, better
Xmax3.5 mm –
Sensitivity95.5 dB +6.1, better
Tang BandW4-1320SI
No current priceFs75 Hz +17%, worse
Qts0.38 +58%, worse
Vas5.2 L −3%
BL5.1 T·m –
Xmax3 mm −14%, worse
Sensitivity88.7 dB −0.7
Tang BandW4-1320SJF
No current priceFs75 Hz +17%, worse
Qts0.38 +58%, worse
Vas5.2 L −3%
BL5.1 T·m –
Xmax3 mm −14%, worse
Sensitivity88.9 dB −0.5
WavecorWF120BD09
No current priceFs54 Hz −16%, better
Qts0.50 +108%, worse
Vas5.3 L –
BL5.2 T·m –
Xmax4 mm +14%, better
Sensitivity83.9 dB −5.5, worse
HiViB4N
No current priceFs56 Hz −13%, better
Qts0.52 +117%, worse
Vas4.5 L −17%, better
BL5.1 T·m –
Xmax3.2 mm −9%
Sensitivity83 dB −6.4, worse
Dayton AudioCFC150-4
No current priceFs77 Hz +20%, worse
Qts0.70 +192%, worse
Vas4.2 L −23%, better
BL4.7 T·m −8%
Xmax3.5 mm –
Sensitivity85.6 dB −3.8, worse
PurifiPTT5.25M04-NAA-05
No current priceFs39 Hz −39%, better
Qts0.24 –
Vas9.9 L +83%, worse
BL8.1 T·m +59%, better
Xmax2.9 mm −17%, worse
Sensitivity85.7 dB −3.7, 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 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 |
|---|---|---|---|---|
Willys-Hifi | £290.99, the lowest price | Stock not listed | Visit shop at Willys-Hifi | |
SoundImports Import VAT and duty may apply | £263.71 | Back order | Visit shop at SoundImports | |
Hifisound Import VAT and duty may apply | £267.60 | 3 in stock | Visit shop at Hifisound |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£297.95 → £290.99Down 2.3% from £297.95
- 30 SepWillys-Hifi£296.95 → £297.95Up 0.3% from £296.95
- 29 SepWillys-Hifi£297.95 → £296.95Down 0.3% from £297.95