REDCATT5FHW
£15.86 · 94% less, betterFs50 Hz −24%, better
Qts0.35 +21%, worse
Vas6.5 L +13%, worse
BL6.5 T·m +7%
Xmax3.2 mm −6%
Sensitivity85.4 dB −3.9, worse
5-inch LF driver · Illuminator series · 32 mm voice coil · 80 W
Scanspeak 12MU/8731T00 8Ω
8 Ω
£290.99
2.3%Willys-Hifi · All 4 offers
- Fs
- 66Hz
- Xmax
- 3.4mm
- SPL
- 89dB
- Pe
- 80W
- BL
- 6.1T·m
- Vd
- 20cm³
- Qts
- 0.29
- Vas
- 6L
Scanspeak 12MU/8731T00 is a 5-inch 8 ohm LF driver rated at 80 W RMS. The validated T/S data includes Fs 66 Hz, Qts 0.29, Vas 5.8 L, Xmax 3.4 mm, sensitivity 89.3 dB, plus 20 cm³ Vd and 213 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 £263.71.
The published T/S values agree with each other
Thiele/Small
- Fs
- 66Hz
- Qts
- 0.29
- Qes
- 0.31
- Qms
- 3.6
- Vas
- 5.8L
- Re
- 5.9Ω
- Le
- 0.13mH
Motor and cone
- BL
- 6.1T·m
- Sd
- 58cm²
- Mms
- 5g
- Xmax
- 3.4mm
- Vd †
- 20cm³
- Voice coil
- 32mm
Power and response
- Sensitivity †
- 89.3dB
- Manufacturer sensitivity
- 87dB
- Power
- 80W
- Impedance
- 8Ω
- Min. impedance
- 7.7Ω
- EBP †
- 213 · Leans vented
Size and mounting
- Diameter
- 120mm
Other published values
- Cms
- 1.24mm/N
- Rms
- 0.54kg/s
- Power Peak
- 150
Sensitivity shows 89.3 dB, calculated from the T/S values. Scanspeak publishes 87.0 dB, 2.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 5″
- BL
- 6.1T·m
- Fs
- 66Hz
- Le
- 0.13mH
- Re
- 5.9Ω
- Sd
- 58cm²
- Cms
- 1.24mm/N
- Mms
- 5g
- Qes
- 0.31
- Qms
- 3.6
- Qts
- 0.29
- Rms
- 0.54kg/s
- SPL
- 89.3dB
- Vas
- 5.8L
- Xmax
- 3.4mm
- Power
- 80W
- Impedance
- 8Ω
- Power Peak
- 150
- Sensitivity
- 87dB
- Calculated sensitivity †
- 89.3dB
- Manufacturer sensitivity
- 87dB
- Min. impedance
- 7.7Ω
- Voice coil
- 32mm
- Diameter
- 120mm
02
Compare
Same-size drivers, compared with the 12MU/8731T00. Clear differences are green when better and red when worse.
This driver12MU/8731T00
Best price
£263.71
Fs
66 Hz
Qts
0.29
Vas
5.8 L
BL
6.1 T·m
Xmax
3.4 mm
Sensitivity
89.3 dB
Power
80 W
Sica5 F 1.5 CP
£38.51 · 85% less, betterFs61 Hz −8%
Qts0.30 +3%
Vas6.8 L +17%, worse
BL7.6 T·m +24%, better
Xmax3.5 mm –
Sensitivity88.7 dB −0.6
Dayton AudioCF120-4
£52.29 · 80% less, betterFs53 Hz −19%, better
Qts0.28 −3%
Vas4.9 L −16%, better
BL4.9 T·m −19%, worse
Xmax3.5 mm –
Sensitivity85.6 dB −3.7, worse
Scanspeak12W/8524G00
£54.43 · 79% less, betterFs52 Hz −21%, better
Qts0.32 +10%, worse
Vas8.2 L +41%, worse
BL5.4 T·m −11%, worse
Xmax3 mm −12%, worse
Sensitivity87.2 dB −2.1, worse
Scanspeak12W/4524G00
£55.26 · 79% less, betterFs50 Hz −24%, better
Qts0.27 −7%
Vas8.2 L +41%, worse
BL4.4 T·m −28%, worse
Xmax3 mm −12%, worse
Sensitivity87.4 dB −1.9
FaitalPRO5PR120
£70.33 · 73% less, betterFs100 Hz +52%, worse
Qts0.27 −7%
Vas4.2 L −28%, better
BL10 T·m +64%, better
Xmax3.1 mm −9%
Sensitivity93.8 dB +4.5, better
B&C5FG44
£74.52 · 72% less, betterFs63 Hz −5%
Qts0.27 −7%
Vas6.3 L +9%
BL10 T·m +64%, better
Xmax3 mm −12%, worse
Sensitivity89.2 dB –
SEASH1152-08 CA12RCY
£79.46 · 70% less, betterFs57 Hz −14%, better
Qts0.31 +7%
Vas5 L −14%, better
BL6.3 T·m +4%
Xmax3 mm −12%, worse
Sensitivity86.1 dB −3.2, worse
SB AcousticsMR13PNW-8
£115.00 · 56% less, betterFs47 Hz −29%, better
Qts0.30 +3%
Vas12.9 L +122%, worse
BL6.2 T·m –
Xmax3 mm −12%, worse
Sensitivity88.2 dB −1.1
SB AcousticsMR13P-8
£135.77 · 49% less, betterFs45 Hz −32%, better
Qts0.31 +7%
Vas12.5 L +116%, worse
BL6.1 T·m –
Xmax3 mm −12%, worse
Sensitivity87.4 dB −1.9
Scanspeak15M/4531K00
£150.70 · 43% less, betterFs42 Hz −36%, better
Qts0.27 −7%
Vas16 L +176%, worse
BL6 T·m –
Xmax3 mm −12%, worse
Sensitivity88.3 dB −1
SB AcousticsMR16P-8
£159.05 · 40% less, betterFs32 Hz −52%, better
Qts0.30 +3%
Vas44.3 L +664%, worse
BL6.5 T·m +7%
Xmax3.1 mm −9%
Sensitivity88.6 dB −0.7
SB AcousticsMR16PNW-8
£159.05 · 40% less, betterFs31 Hz −53%, better
Qts0.32 +10%, worse
Vas44.8 L +672%, worse
BL6.5 T·m +7%
Xmax3.1 mm −9%
Sensitivity88 dB −1.3
Tang BandW4-2315
£175.00 · 34% less, betterFs65 Hz –
Qts0.29 –
Vas5.0 L −14%, better
BL6.2 T·m –
Xmax2.8 mm −18%, worse
Sensitivity88.5 dB −0.8
SB AcousticsMR16TX-8
£249.00 · 6% less, betterFs35 Hz −47%, better
Qts0.31 +7%
Vas38.9 L +571%, worse
BL6.6 T·m +8%
Xmax2.9 mm −16%, worse
Sensitivity89.2 dB –
PurifiPTT4.0X04-NFC-01
£251.15 · 5% lessFs38 Hz −42%, better
Qts0.30 +3%
Vas6.4 L +10%, worse
BL6 T·m –
Xmax8.8 mm +159%, better
Sensitivity82.4 dB −6.9, worse
PurifiPTT4.0M08-NAC-03
£251.15 · 5% lessFs50 Hz −24%, better
Qts0.32 +10%, worse
Vas4.9 L −16%, better
BL7 T·m +15%, better
Xmax2.9 mm −15%, worse
Sensitivity84.6 dB −4.7, worse
Scanspeak12MU/4731T00
£267.60 · 1% moreFs64 Hz −3%
Qts0.24 −17%, better
Vas5.4 L −7%
BL5.1 T·m −16%, worse
Xmax3.5 mm –
Sensitivity89.4 dB –
PurifiPTT4.0M04-NAC-03
No current priceFs48 Hz −27%, better
Qts0.28 −3%
Vas5 L −14%, better
BL5.9 T·m −3%
Xmax2.9 mm −15%, worse
Sensitivity84.7 dB −4.6, worse
Tang BandW4-657D
No current priceFs70 Hz +6%
Qts0.32 +10%, worse
Vas5.6 L −3%
BL5.6 T·m −8%
Xmax3.3 mm –
Sensitivity89.4 dB –
PurifiPTT4.0M08-NFC-01
No current priceFs48 Hz −27%, better
Qts0.31 +7%
Vas5.3 L −9%
BL7 T·m +15%, better
Xmax2.9 mm −15%, worse
Sensitivity84.5 dB −4.8, worse
PurifiPTT4.0M04-NFC-01
No current priceFs46 Hz −30%, better
Qts0.25 −14%, better
Vas5.4 L −7%
BL6 T·m –
Xmax2.9 mm −15%, worse
Sensitivity84.9 dB −4.4, worse
PurifiPTT4.0X04-NAC-03
No current priceFs40 Hz −39%, better
Qts0.31 +7%
Vas5.5 L −5%
BL6.1 T·m –
Xmax8.8 mm +159%, better
Sensitivity82.2 dB −7.1, worse
Tang BandW4-1798S
No current priceFs60 Hz −9%
Qts0.30 +3%
Vas7.4 L +28%, worse
BL5.8 T·m −6%
Xmax3 mm −12%, worse
Sensitivity88.4 dB −0.9
Tang BandW4-992SD
No current priceFs55 Hz −17%, better
Qts0.35 +21%, worse
Vas5.7 L –
BL6.4 T·m +5%
Xmax3.5 mm –
Sensitivity85.8 dB −3.5, worse
Sica5.5 C 1.5 CP
No current priceFs62 Hz −6%
Qts0.31 +7%
Vas5.4 L −7%
BL7.9 T·m +29%, better
Xmax4 mm +18%, better
Sensitivity87.8 dB −1.5
Tang BandW4-937SF
No current priceFs65 Hz –
Qts0.26 −10%, better
Vas4.9 L −16%, better
BL6.7 T·m +10%
Xmax4.5 mm +32%, better
Sensitivity88.1 dB −1.2
WavecorWF152BD06
No current priceFs45 Hz −33%, better
Qts0.29 –
Vas11.5 L +98%, worse
BL6.3 T·m +4%
Xmax4.5 mm +32%, better
Sensitivity87.3 dB −2, worse
WavecorWF152BD14
No current priceFs45 Hz −33%, better
Qts0.29 –
Vas11.5 L +98%, worse
BL6.3 T·m +4%
Xmax4.5 mm +32%, better
Sensitivity87.3 dB −2, worse
Sica6 CX 2 PL P
No current priceFs85 Hz +29%, worse
Qts0.24 −17%, better
Vas5.4 L −7%
BL12.8 T·m +110%, better
Xmax3.5 mm –
Sensitivity92.9 dB +3.6, better
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 55 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 |
|---|---|---|---|---|
Willys-Hifi | £290.99, the lowest price | Stock not listed | Visit shop at Willys-Hifi | |
Wilmslow Audio | £336.67 | 16% above the lowest price | Stock not listed | Visit shop at Wilmslow Audio |
SoundImports Import VAT and duty may apply | £263.71 | 13 in stock | Visit shop at SoundImports | |
Hifisound Import VAT and duty may apply · under 7 working days | £267.60 | Back order (under 7 working days) | 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