SB AcousticsSB13PFCR25-4-COAX
£44.29 · 10% less, betterFs43 Hz −7%
Qts0.27 +8%
Vas14.4 L –
BL5.1 T·m −23%, worse
Xmax4.7 mm +79%, better
Sensitivity87.8 dB −1.4
6-inch LF driver · Discovery series · 60 W
Scanspeak 15W/8424G00 8Ω
8 Ω
£56.40
5.3%Falcon Acoustics · In stock · All 6 offers
- Fs
- 46Hz
- Xmax
- 2.6mm
- SPL
- 89dB
- Pe
- 60W
- BL
- 6.6T·m
- Vd
- 21cm³
- Qts
- 0.25
- Vas
- 15L
Scanspeak 15W/8424G00 is a 6-inch 8 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 46 Hz, Qts 0.25, Vas 14.5 L, Xmax 2.6 mm, sensitivity 89.2 dB, plus 21 cm³ Vd and 170 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 £49.40.
Partial source evidence
Automated T/S checks passed, but some material low-frequency parameters are not published for this record.
Material fields not published: Mms
- Manufacturer page linked
- Datasheet linked
- Canonical units normalized for comparison
- Vd can be derived from Sd and Xmax
- EBP can be derived from Fs and Qes
Thiele/Small
- Fs
- 46Hz
- Qts
- 0.25
- Qes
- 0.27
- Qms
- 3.6
- Vas
- 14.5L
- Re
- 5.5Ω
- Le
- 5mH
Motor and cone
- BL
- 6.6T·m
- Sd
- 80cm²
- Xmax
- 2.6mm
- Vd †
- 21cm³
Power and response
- Sensitivity †
- 89.2dB
- Manufacturer sensitivity
- 87.5dB
- Power
- 60W
- Impedance
- 8Ω
- Min. impedance
- 6.6Ω
- EBP †
- 170 · Leans vented
Size and mounting
- Diameter
- 150mm
Other published values
- Rms
- 0.60kg/s
- Xmech
- 8
- Power Peak
- 120
Sensitivity shows 89.2 dB, calculated from the T/S values. Scanspeak publishes 87.5 dB, 1.7 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 6″
- BL
- 6.6T·m
- Fs
- 46Hz
- Le
- 5mH
- Re
- 5.5Ω
- Sd
- 80cm²
- Qes
- 0.27
- Qms
- 3.6
- Qts
- 0.25
- Rms
- 0.60kg/s
- SPL
- 89.2dB
- Vas
- 14.5L
- Xmax
- 2.6mm
- Xmech
- 8
- Power
- 60W
- Impedance
- 8Ω
- Power Peak
- 120
- Sensitivity
- 87.5dB
- Calculated sensitivity †
- 89.2dB
- Manufacturer sensitivity
- 87.5dB
- Min. impedance
- 6.6Ω
- Diameter
- 150mm
02
Compare
Same-size drivers, compared with the 15W/8424G00. Clear differences are green when better and red when worse.
This driver15W/8424G00
Best price
£49.40
Fs
46 Hz
Qts
0.25
Vas
14.5 L
BL
6.6 T·m
Xmax
2.6 mm
Sensitivity
89.2 dB
Power
60 W
SB AcousticsSB13PFC25-4-COAX
£46.01 · 7% less, betterFs43 Hz −7%
Qts0.27 +8%
Vas14.4 L –
BL5.1 T·m −23%, worse
Xmax4.7 mm +79%, better
Sensitivity87.8 dB −1.4
Scanspeak15W/4424G00
£53.55 · 8% more, worseFs46 Hz –
Qts0.24 −4%
Vas13.8 L −5%
BL5.2 T·m −21%, worse
Xmax2.8 mm +8%
Sensitivity89.2 dB –
Scanspeak15W/8434G00
£56.10 · 14% more, worseFs45 Hz –
Qts0.25 –
Vas12.8 L −12%, better
BL7.3 T·m +11%, better
Xmax4.2 mm +62%, better
Sensitivity88.4 dB −0.8
SB AcousticsSB17NRX2L35-4
£59.85 · 21% more, worseFs41 Hz −11%, better
Qts0.25 –
Vas21.9 L +51%, worse
BL6.5 T·m –
Xmax4.8 mm +85%, better
Sensitivity89.7 dB +0.5
£99.78 · 102% more, worse
Fs51 Hz +11%, worse
Qts0.25 –
Vas12 L −17%, better
BL6.8 T·m +3%
Xmax1.7 mm −35%, worse
Sensitivity89.3 dB –
SB AcousticsMR13PNW-8
£115.00 · 133% more, worseFs47 Hz –
Qts0.30 +20%, worse
Vas12.9 L −11%, better
BL6.2 T·m −6%
Xmax3 mm +15%, better
Sensitivity88.2 dB −1
SB AcousticsMR13P-8
£135.77 · 175% more, worseFs45 Hz –
Qts0.31 +24%, worse
Vas12.5 L −14%, better
BL6.1 T·m −8%
Xmax3 mm +15%, better
Sensitivity87.4 dB −1.8
SB AcousticsMW13P-4
£139.69 · 183% more, worseFs41 Hz −11%, better
Qts0.27 +8%
Vas14.6 L –
BL4.9 T·m −26%, worse
Xmax5 mm +92%, better
Sensitivity87.4 dB −1.8
SB AcousticsMW13PNW-4
£139.69 · 183% more, worseFs41 Hz −11%, better
Qts0.27 +8%
Vas14.6 L –
BL4.9 T·m −26%, worse
Xmax5 mm +92%, better
Sensitivity87.4 dB −1.8
Scanspeak15M/4531K00
£150.70 · 205% more, worseFs42 Hz −9%
Qts0.27 +8%
Vas16 L +10%, worse
BL6 T·m −9%
Xmax3 mm +15%, better
Sensitivity88.3 dB −0.9
WavecorWF182BD13
£157.84 · 220% more, worseFs38 Hz −17%, better
Qts0.26 +4%
Vas20.8 L +43%, worse
BL6.9 T·m +5%
Xmax5.5 mm +112%, better
Sensitivity88.3 dB −0.9
SB AcousticsMR16P-4
£159.05 · 222% more, worseFs31 Hz −33%, better
Qts0.25 –
Vas47.2 L +226%, worse
BL5.2 T·m −21%, worse
Xmax3.1 mm +19%, better
Sensitivity89.4 dB –
SB AcousticsMR16PNW-4
£159.05 · 222% more, worseFs31 Hz −33%, better
Qts0.25 –
Vas47.2 L +226%, worse
BL5.2 T·m −21%, worse
Xmax3.1 mm +19%, better
Sensitivity89.4 dB –
SB AcousticsMW19P-4
£165.40 · 235% more, worseFs29 Hz −37%, better
Qts0.24 −4%
Vas61 L +321%, worse
BL6.5 T·m –
Xmax6.8 mm +162%, better
Sensitivity89.6 dB –
SB AcousticsMW19PNW-4
£168.40 · 241% more, worseFs29 Hz −37%, better
Qts0.24 −4%
Vas61 L +321%, worse
BL6.5 T·m –
Xmax6.8 mm +162%, better
Sensitivity89.6 dB –
SB AcousticsMW13TX-4
£225.24 · 356% more, worseFs38 Hz −17%, better
Qts0.26 +4%
Vas16 L +10%, worse
BL5 T·m −24%, worse
Xmax5 mm +92%, better
Sensitivity87.2 dB −2, worse
SB AcousticsMR13TX-4
£251.15 · 408% more, worseFs44 Hz −4%
Qts0.27 +8%
Vas12.2 L −16%, better
BL4.9 T·m −26%, worse
Xmax3 mm +15%, better
Sensitivity87.7 dB −1.5
Scanspeak15WU/4741T00
£261.31 · 429% more, worseFs34 Hz −26%, better
Qts0.23 −8%
Vas20 L +38%, worse
BL6 T·m −9%
Xmax9 mm +246%, better
Sensitivity87 dB −2.2, worse
Scanspeak15WU/8741T00
£301.39 · 510% more, worseFs35 Hz −24%, better
Qts0.26 +4%
Vas19.9 L +37%, worse
BL7.5 T·m +14%, better
Xmax9 mm +246%, better
Sensitivity86.9 dB −2.3, worse
Dayton AudioPS65LP-4
No current priceFs67 Hz +46%, worse
Qts0.24 −4%
Vas17.3 L +19%, worse
BL6 T·m −9%
Xmax4 mm +54%, better
Sensitivity95.1 dB +5.9, better
PurifiPTT5.25M04-NAA-05
No current priceFs39 Hz −15%, better
Qts0.24 −4%
Vas9.9 L −32%, better
BL8.1 T·m +23%, better
Xmax2.9 mm +12%, better
Sensitivity85.7 dB −3.5, worse
PurifiPTT5.25X04-NFA-01
No current priceFs29 Hz −37%, better
Qts0.24 −4%
Vas13 L −10%, better
BL7.9 T·m +20%, better
Xmax9.8 mm +277%, better
Sensitivity83.1 dB −6.1, worse
WavecorWF182BD04
No current priceFs34 Hz −27%, better
Qts0.25 –
Vas32.4 L +123%, worse
BL6.8 T·m –
Xmax5.5 mm +112%, better
Sensitivity88.9 dB –
WavecorWF182BD14
No current priceFs36 Hz −22%, better
Qts0.25 –
Vas23 L +59%, worse
BL6.9 T·m +5%
Xmax5.5 mm +112%, better
Sensitivity88.2 dB −1
CIAREHSG160
No current priceFs37 Hz −20%, better
Qts0.27 +8%
Vas16.5 L +14%, worse
BL8 T·m +21%, better
Xmax5.5 mm +112%, better
Sensitivity86.8 dB −2.4, worse
PurifiPTT5.25X04-NAA-05
No current priceFs29 Hz −37%, better
Qts0.27 +8%
Vas11.8 L −19%, better
BL7.9 T·m +20%, better
Xmax9.8 mm +277%, better
Sensitivity82.1 dB −7.1, worse
WavecorWF152BD06
No current priceFs45 Hz −3%
Qts0.29 +16%, worse
Vas11.5 L −21%, better
BL6.3 T·m −4%
Xmax4.5 mm +73%, better
Sensitivity87.3 dB −1.9
WavecorWF152BD14
No current priceFs45 Hz −3%
Qts0.29 +16%, worse
Vas11.5 L −21%, better
BL6.3 T·m −4%
Xmax4.5 mm +73%, better
Sensitivity87.3 dB −1.9
PurifiPTT6.5M04-NAA-08
No current priceFs36 Hz −22%, better
Qts0.27 +8%
Vas22.7 L +57%, worse
BL8.2 T·m +24%, better
Xmax2.9 mm +12%, better
Sensitivity87.8 dB −1.4
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.0 out of 52 ratings · Checked 26 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 | £56.40, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £59.56 | 5.6% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £53.55 | 19 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£61.95 → £59.56Down 3.9% from £61.95
- 30 SepWillys-Hifi£60.95 → £61.95Up 1.6% from £60.95
- 26 AugWillys-Hifi£61.95 → £60.95Down 1.6% from £61.95