SB AcousticsSB13PFCR25-4
£23.27 · Same priceFs44 Hz –
Qts0.29 –
Vas13.4 L –
BL5.3 T·m –
Xmax9 mm +100%, better
Sensitivity87.4 dB –
5-inch LF driver · SB13 series · 25 mm voice coil · 40 W
SB Acoustics SB13PFC25-4 4Ω
4 Ω
£23.27
3.5%RumoH · Ships from Netherlands · All 2 offers
- Fs
- 44Hz
- Xmax
- 4.5mm
- SPL
- 87dB
- Pe
- 40W
- BL
- 5.3T·m
- Vd
- 39cm³
- Qts
- 0.29
- Vas
- 13L
Published graphs
SB Acoustics SB13PFC25-4 is a 5-inch 4 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 44 Hz, Qts 0.29, Vas 13.4 L, Xmax 4.5 mm, sensitivity 87.4 dB, plus 39 cm³ Vd and 133 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 £23.27.
The published T/S values agree with each other
Thiele/Small
- Fs
- 44Hz
- Qts
- 0.29
- Qes
- 0.33
- Qms
- 2.6
- Vas
- 13.4L
- Re
- 3.2Ω
- Le
- 0.56mH
Motor and cone
- BL
- 5.3T·m
- Sd
- 87cm²
- Mms
- 11g
- Xmax
- 4.5mm
- Vd †
- 39cm³
- Voice coil
- 25mm
- Flux density
- 1.06T
Power and response
- Sensitivity †
- 87.4dB
- Manufacturer sensitivity
- 89dB
- Power
- 40W
- Impedance
- 4Ω
- EBP †
- 133 · Leans vented
Size and mounting
- Weight
- 0.9kg
Other published values
- Cms
- 1.25mm/N
Sensitivity shows 87.4 dB, calculated from the T/S values. SB Acoustics publishes 89.0 dB, 1.6 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 5″
- BL
- 5.3T·m
- Fs
- 44Hz
- Le
- 0.56mH
- Re
- 3.2Ω
- Sd
- 87cm²
- Cms
- 1.25mm/N
- Mms
- 11g
- Qes
- 0.33
- Qms
- 2.6
- Qts
- 0.29
- SPL
- 87.4dB
- Vas
- 13.4L
- Xmax
- 4.5mm
- Power
- 40W
- Impedance
- 4Ω
- Flux density
- 1.06T
- Sensitivity
- 89dB
- Calculated sensitivity †
- 87.4dB
- Manufacturer sensitivity
- 89dB
- Voice coil
- 25mm
- Weight
- 0.9kg
02
Compare
Same-size drivers, compared with the SB13PFC25-4. Clear differences are green when better and red when worse.
This driverSB13PFC25-4
Best price
£23.27
Fs
44 Hz
Qts
0.29
Vas
13.4 L
BL
5.3 T·m
Xmax
4.5 mm
Sensitivity
87.4 dB
Power
40 W
SB AcousticsSB13PFC25-8
£23.27 · Same priceFs45 Hz –
Qts0.33 +14%, worse
Vas13.4 L –
BL6.2 T·m +17%, better
Xmax4.5 mm –
Sensitivity87 dB –
CIAREHW100
£27.97 · 20% more, worseFs70 Hz +59%, worse
Qts0.31 +7%
Vas4.3 L −68%, better
BL5.6 T·m +6%
Xmax4.3 mm −4%
Sensitivity88 dB +0.6
SB AcousticsSB13PFCR25-4-COAX
£44.84 · 93% more, worseFs43 Hz –
Qts0.27 −7%
Vas14.4 L +7%
BL5.1 T·m −4%
Xmax4.7 mm +3%
Sensitivity87.8 dB –
SB AcousticsSB13PFC25-4-COAX
£46.58 · 100% more, worseFs43 Hz –
Qts0.27 −7%
Vas14.4 L +7%
BL5.1 T·m −4%
Xmax4.7 mm +3%
Sensitivity87.8 dB –
SB AcousticsSB16PFC25-4-COAX
£48.27 · 107% more, worseFs36 Hz −18%, better
Qts0.31 +7%
Vas31.3 L +134%, worse
BL5.1 T·m −4%
Xmax4.7 mm +3%
Sensitivity88.2 dB +0.8
SB AcousticsSB16PFCR25-4-COAX
£49.62 · 113% more, worseFs36 Hz −18%, better
Qts0.31 +7%
Vas31.3 L +134%, worse
BL5.1 T·m −4%
Xmax4.7 mm +3%
Sensitivity88.2 dB +0.8
SB AcousticsSB15NRXC30-4
£54.80 · 136% more, worseFs41 Hz −7%
Qts0.29 –
Vas16.7 L +25%, worse
BL4.7 T·m −11%, worse
Xmax5 mm +11%, better
Sensitivity87.7 dB –
CIAREHWB130
£61.87 · 166% more, worseFs46 Hz +5%
Qts0.28 −3%
Vas12.5 L −7%
BL5.6 T·m +6%
Xmax4.5 mm –
Sensitivity88.3 dB +0.9
SB AcousticsSB15NAC30-4
£70.31 · 202% more, worseFs35 Hz −20%, better
Qts0.30 +3%
Vas18.3 L +37%, worse
BL4.8 T·m −9%
Xmax5 mm +11%, better
Sensitivity85.9 dB −1.5
SEASH1455-08 ER15RLY
£81.26 · 249% more, worseFs44 Hz –
Qts0.32 +10%, worse
Vas15 L +12%, worse
BL5.5 T·m +4%
Xmax5 mm +11%, better
Sensitivity87 dB –
SEASH1216-08 CA15RLY
£90.51 · 289% more, worseFs44 Hz –
Qts0.34 +17%, worse
Vas14 L +4%
BL5.5 T·m +4%
Xmax5 mm +11%, better
Sensitivity86.6 dB −0.8
WavecorWF152BD13
£99.09 · 326% more, worseFs50 Hz +14%, worse
Qts0.33 +14%, worse
Vas9.2 L −31%, better
BL6.3 T·m +20%, better
Xmax4.5 mm –
Sensitivity87.3 dB –
WavecorWF152BD09
£111.20 · 378% more, worseFs52 Hz +18%, worse
Qts0.34 +17%, worse
Vas8.6 L −36%, better
BL5.8 T·m +9%
Xmax4.5 mm –
Sensitivity87.4 dB –
SB AcousticsMR13PNW-8
£115.00 · 394% more, worseFs47 Hz +7%
Qts0.30 +3%
Vas12.9 L −4%
BL6.2 T·m +17%, better
Xmax6 mm +33%, better
Sensitivity88.2 dB +0.8
SB AcousticsMR13P-8
£135.77 · 484% more, worseFs45 Hz –
Qts0.31 +7%
Vas12.5 L −7%
BL6.1 T·m +15%, better
Xmax6 mm +33%, better
Sensitivity87.4 dB –
SB AcousticsMW13P-8
£139.69 · 500% more, worseFs42 Hz −6%
Qts0.30 +3%
Vas15 L +12%, worse
BL5.7 T·m +8%
Xmax10 mm +122%, better
Sensitivity87.1 dB –
SB AcousticsMW13PNW-8
£139.69 · 500% more, worseFs41 Hz −7%
Qts0.31 +7%
Vas15 L +12%, worse
BL5.7 T·m +8%
Xmax10 mm +122%, better
Sensitivity87 dB –
SB AcousticsMW13P-4
£139.69 · 500% more, worseFs41 Hz −7%
Qts0.27 −7%
Vas14.6 L +9%
BL4.9 T·m −8%
Xmax10 mm +122%, better
Sensitivity87.4 dB –
SB AcousticsMW13PNW-4
£139.69 · 500% more, worseFs41 Hz −7%
Qts0.27 −7%
Vas14.6 L +9%
BL4.9 T·m −8%
Xmax10 mm +122%, better
Sensitivity87.4 dB –
WavecorWF152BD04
£144.52 · 521% more, worseFs50 Hz +14%, worse
Qts0.31 +7%
Vas11.4 L −15%, better
BL7.3 T·m +38%, better
Xmax4.5 mm –
Sensitivity88.4 dB +1
WavecorWF152BD03
£144.52 · 521% more, worseFs56 Hz +26%, worse
Qts0.35 +21%, worse
Vas9.2 L −31%, better
BL5.8 T·m +9%
Xmax4.5 mm –
Sensitivity88.4 dB +1
Scanspeak15W/4531G00
£169.48 · 628% more, worseFs40 Hz −9%
Qts0.32 +10%, worse
Vas15.8 L +18%, worse
BL5.7 T·m +8%
Xmax6.5 mm +44%, better
Sensitivity86.8 dB −0.6
SB AcousticsMW13TX-8
£228.00 · 880% more, worseFs40 Hz −9%
Qts0.32 +10%, worse
Vas14.8 L +10%, worse
BL5.7 T·m +8%
Xmax10 mm +122%, better
Sensitivity86.5 dB −0.9
WavecorWF152BD06
No current priceFs45 Hz –
Qts0.29 –
Vas11.5 L −14%, better
BL6.3 T·m +20%, better
Xmax4.5 mm –
Sensitivity87.3 dB –
WavecorWF152BD14
No current priceFs45 Hz –
Qts0.29 –
Vas11.5 L −14%, better
BL6.3 T·m +20%, better
Xmax4.5 mm –
Sensitivity87.3 dB –
WavecorWF152BD10
No current priceFs49 Hz +11%, worse
Qts0.32 +10%, worse
Vas9.6 L −28%, better
BL5.8 T·m +9%
Xmax4.5 mm –
Sensitivity87.4 dB –
Audio Technology15 J 52 15 06 SD
No current priceFs45 Hz –
Qts0.32 +10%, worse
Vas15 L +12%, worse
BL5.5 T·m +4%
Xmax5.2 mm +16%, better
Sensitivity87.7 dB –
WavecorWF152BD05
No current priceFs50 Hz +14%, worse
Qts0.33 +14%, worse
Vas9.2 L −31%, better
BL6.3 T·m +20%, better
Xmax4.5 mm –
Sensitivity87.3 dB –
CIAREHWL100
No current priceFs70 Hz +59%, worse
Qts0.31 +7%
Vas4.3 L −68%, better
BL5.6 T·m +6%
Xmax4.3 mm −4%
Sensitivity88 dB +0.6
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.8 out of 56 ratings · Checked 12 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 |
|---|---|---|---|---|
RumoH Import VAT and duty may apply | £23.27, the lowest price | Stock not listed | Visit shop at RumoH | |
SoundImports Import VAT and duty may apply | £24.11 | 3.6% above the lowest price | 3 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr