Dayton AudioTCP115-4
£11.95 · 95% less, betterFs54 Hz −28%, better
Qts0.35 +6%
Vas3.1 L +35%, worse
BL5.2 T·m –
Xmax4 mm +33%, better
Sensitivity82.8 dB −3.7, worse
5-inch LF driver · Revelator series · 38 mm voice coil · 40 W
Scanspeak 12M/4631G00 4Ω
4 Ω
£271.87
2.5%Willys-Hifi · All 4 offers
- Fs
- 75Hz
- Xmax
- 3mm
- SPL
- 87dB
- Pe
- 40W
- BL
- 5.3T·m
- Vd
- 15cm³
- Qts
- 0.33
- Vas
- 2L
Scanspeak 12M/4631G00 is a 5-inch 4 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 75 Hz, Qts 0.33, Vas 2.3 L, Xmax 3 mm, sensitivity 86.5 dB, plus 15 cm³ Vd and 214 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 £242.78.
The published T/S values agree with each other
Thiele/Small
- Fs
- 75Hz
- Qts
- 0.33
- Qes
- 0.35
- Qms
- 5.6
- Vas
- 2.3L
- Re
- 3.2Ω
- Le
- 0.22mH
Motor and cone
- BL
- 5.3T·m
- Sd
- 49cm²
- Mms
- 7g
- Xmax
- 3mm
- Vd †
- 15cm³
- Voice coil
- 38mm
Power and response
- Sensitivity †
- 86.5dB
- Manufacturer sensitivity
- 89dB
- Power
- 40W
- Impedance
- 4Ω
- Min. impedance
- 3.8Ω
- EBP †
- 214 · Leans vented
Size and mounting
- Diameter
- 120mm
Other published values
- Cms
- 0.69mm/N
- Rms
- 0.55kg/s
- Xmech
- 7
- Power Peak
- 70
Sensitivity shows 86.5 dB, calculated from the T/S values. Scanspeak publishes 89.0 dB, 2.5 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 5″
- BL
- 5.3T·m
- Fs
- 75Hz
- Le
- 0.22mH
- Re
- 3.2Ω
- Sd
- 49cm²
- Cms
- 0.69mm/N
- Mms
- 7g
- Qes
- 0.35
- Qms
- 5.6
- Qts
- 0.33
- Rms
- 0.55kg/s
- SPL
- 86.5dB
- Vas
- 2.3L
- Xmax
- 3mm
- Xmech
- 7
- Power
- 40W
- Impedance
- 4Ω
- Power Peak
- 70
- Sensitivity
- 89dB
- Calculated sensitivity †
- 86.5dB
- Manufacturer sensitivity
- 89dB
- Min. impedance
- 3.8Ω
- Voice coil
- 38mm
- Diameter
- 120mm
02
Compare
Same-size drivers, compared with the 12M/4631G00. Clear differences are green when better and red when worse.
This driver12M/4631G00
Best price
£242.78
Fs
75 Hz
Qts
0.33
Vas
2.3 L
BL
5.3 T·m
Xmax
3 mm
Sensitivity
86.5 dB
Power
40 W
FaitalPRO4FE42
£29.42 · 88% less, betterFs110 Hz +47%, worse
Qts0.38 +15%, worse
Vas1.8 L −22%, better
BL5.4 T·m –
Xmax2.8 mm −6%
Sensitivity89.8 dB +3.3, better
REDCATT41NFR
£29.89 · 88% less, betterFs98 Hz +31%, worse
Qts0.37 +12%, worse
Vas2.1 L −9%
BL10 T·m +89%, better
Xmax3.1 mm +5%
Sensitivity89 dB +2.5, better
WavecorWF146WA06
£53.11 · 78% less, betterFs40 Hz −47%, better
Qts0.36 +9%
Vas16.6 L +622%, worse
BL6.3 T·m +19%, better
Xmax3 mm –
Sensitivity86.5 dB –
WavecorWF146WA05
£53.11 · 78% less, betterFs41 Hz −45%, better
Qts0.38 +15%, worse
Vas15.2 L +561%, worse
BL5 T·m −6%
Xmax3 mm –
Sensitivity86.2 dB –
SB AcousticsSB15NRXC30-8
£54.13 · 78% less, betterFs38 Hz −49%, better
Qts0.33 –
Vas20.7 L +800%, worse
BL5.6 T·m +6%
Xmax5 mm +67%, better
Sensitivity87.1 dB +0.6
Scanspeak12W/8524G00
£54.43 · 78% less, betterFs52 Hz −31%, better
Qts0.32 −3%
Vas8.2 L +257%, worse
BL5.4 T·m –
Xmax3 mm –
Sensitivity87.2 dB +0.7
Tang BandW4-1320SIF
£57.77 · 76% less, betterFs75 Hz –
Qts0.36 +9%
Vas5.2 L +127%, worse
BL5.3 T·m –
Xmax3 mm –
Sensitivity89.2 dB +2.7, better
Tang BandW4-2142
£57.77 · 76% less, betterFs60 Hz −20%, better
Qts0.33 –
Vas6.4 L +179%, worse
BL5.4 T·m –
Xmax2.4 mm −20%, worse
Sensitivity87.5 dB +1
SB AcousticsSB17NAC35-4
£71.13 · 71% less, betterFs32 Hz −57%, better
Qts0.32 −3%
Vas33 L +1335%, worse
BL5.2 T·m –
Xmax5.5 mm +83%, better
Sensitivity87.1 dB +0.6
Tang BandW4-1337SDF
£71.17 · 71% less, betterFs70 Hz −7%
Qts0.34 +3%
Vas5.6 L +144%, worse
BL5.3 T·m –
Xmax2.5 mm −17%, worse
Sensitivity88.9 dB +2.4, better
WavecorWF118WA01
£76.45 · 69% less, betterFs64 Hz −15%, better
Qts0.36 +9%
Vas4.3 L +87%, worse
BL4.6 T·m −13%, worse
Xmax3 mm –
Sensitivity86.8 dB –
SEASH1152-08 CA12RCY
£79.46 · 67% less, betterFs57 Hz −24%, better
Qts0.31 −6%
Vas5 L +117%, worse
BL6.3 T·m +20%, better
Xmax3 mm –
Sensitivity86.1 dB –
ETON5-512/C8/25 RP
£83.69 · 66% less, betterFs59 Hz −21%, better
Qts0.34 +3%
Vas10 L +335%, worse
BL5.9 T·m +11%, better
Xmax2.5 mm −17%, worse
Sensitivity89.7 dB +3.2, better
Scanspeak10F/8424G00
£83.73 · 66% less, betterFs90 Hz +20%, worse
Qts0.37 +12%, worse
Vas2.1 L −9%
BL4.8 T·m −9%
Xmax2.6 mm −13%, worse
Sensitivity87.8 dB +1.3
SB AcousticsSB17CRC35-4
£85.53 · 65% less, betterFs32 Hz −58%, better
Qts0.32 −3%
Vas35.5 L +1443%, worse
BL5 T·m −6%
Xmax5.5 mm +83%, better
Sensitivity87 dB +0.5
SB AcousticsMR13PNW-8
£115.00 · 53% less, betterFs47 Hz −37%, better
Qts0.30 −9%
Vas12.9 L +461%, worse
BL6.2 T·m +17%, better
Xmax3 mm –
Sensitivity88.2 dB +1.7
SB AcousticsMR13P-8
£135.77 · 44% less, betterFs45 Hz −40%, better
Qts0.31 −6%
Vas12.5 L +443%, worse
BL6.1 T·m +15%, better
Xmax3 mm –
Sensitivity87.4 dB +0.9
SB AcousticsMR16PNW-8
£159.05 · 34% less, betterFs31 Hz −59%, better
Qts0.32 −3%
Vas44.8 L +1848%, worse
BL6.5 T·m +23%, better
Xmax3.1 mm +3%
Sensitivity88 dB +1.5
Scanspeak15M/8631G00
£167.42 · 31% less, betterFs42 Hz −44%, better
Qts0.35 +6%
Vas16.2 L +604%, worse
BL6.8 T·m +28%, better
Xmax3 mm –
Sensitivity87.1 dB +0.6
£200.91 · 17% less, better
Fs60 Hz −20%, better
Qts0.36 +9%
Vas4 L +74%, worse
BL5.5 T·m +4%
Xmax3 mm –
Sensitivity85 dB −1.5
SB AcousticsMR16TX-8
£249.00 · 3% moreFs35 Hz −53%, better
Qts0.31 −6%
Vas38.9 L +1591%, worse
BL6.6 T·m +25%, better
Xmax2.9 mm −5%
Sensitivity89.2 dB +2.7, better
PurifiPTT4.0M08-NAC-03
£251.15 · 3% moreFs50 Hz −33%, better
Qts0.32 −3%
Vas4.9 L +113%, worse
BL7 T·m +32%, better
Xmax2.9 mm −3%
Sensitivity84.6 dB −1.9
£334.88 · 38% more, worse
Fs45 Hz −40%, better
Qts0.36 +9%
Vas6 L +161%, worse
BL5.4 T·m –
Xmax3 mm –
Sensitivity83.2 dB −3.3, worse
£375.54 · 55% more, worse
Fs37 Hz −51%, better
Qts0.33 –
Vas15 L +552%, worse
BL5.3 T·m –
Xmax7 mm +133%, better
Sensitivity85 dB −1.5
SB AcousticsSB17BAC35-8-COAX
No current priceFs35 Hz −53%, better
Qts0.33 –
Vas33.1 L +1339%, worse
BL5.7 T·m +8%
Xmax3.1 mm +3%
Sensitivity88.1 dB +1.6
Tang BandW4-657D
No current priceFs70 Hz −7%
Qts0.32 −3%
Vas5.6 L +144%, worse
BL5.6 T·m +6%
Xmax3.3 mm +10%
Sensitivity89.4 dB +2.9, better
SB AcousticsSB15BAC30-8-COAX
No current priceFs43 Hz −43%, better
Qts0.36 +9%
Vas17.5 L +661%, worse
BL5.3 T·m –
Xmax3 mm –
Sensitivity87.6 dB +1.1
Tang BandW4-1798S
No current priceFs60 Hz −20%, better
Qts0.30 −9%
Vas7.4 L +223%, worse
BL5.8 T·m +8%
Xmax3 mm –
Sensitivity88.4 dB +1.9
SB AcousticsMW16PF-4
No current priceFs28 Hz −63%, better
Qts0.33 –
Vas49 L +2030%, worse
BL4.7 T·m −11%, worse
Xmax5.5 mm +83%, better
Sensitivity86.9 dB –
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 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 | £271.87, the lowest price | Stock not listed | Visit shop at Willys-Hifi | |
Wilmslow Audio | £283.20 | 4.2% above the lowest price | Stock not listed | Visit shop at Wilmslow Audio |
SoundImports Import VAT and duty may apply | £242.78 | 24 in stock | Visit shop at SoundImports | |
Hifisound Import VAT and duty may apply · under 7 working days | £255.80 | Back order (under 7 working days) | Visit shop at Hifisound |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£278.95 → £271.87Down 2.5% from £278.95
- 30 SepWillys-Hifi£277.95 → £278.95Up 0.4% from £277.95
- 28 SepWillys-Hifi£276.95 → £277.95Up 0.4% from £276.95