5-inch LF driver · SB13 series · 25 mm voice coil · 40 W

SB Acoustics SB13PFC25-4-COAX 4Ω

Name: SB Acoustics SB13PFC25-4-COAX 4 Ohm
Brand: SB Acoustics
SKU: SB13PFC25-4-COAX
Availability: InStock

4 Ω

2 ratings at 1 shop

£46.58

Steady

SoundImports · 6 in stock · Ships from Netherlands · All 1 offer

Open in 00 Simulator

Fs: 43Hz
Xmax: 4.7mm
SPL: 88dB
Pe: 40W
BL: 5.1T·m
Vd: 38cm³
Qts: 0.27
Vas: 14L

See all 21 specs

Published graphs

SB Acoustics SB13PFC25-4-COAX manufacturer graph 1

Specifications

Published by SB Acoustics

Manufacturer page

Datasheet PDF

SB Acoustics SB13PFC25-4-COAX is a 5-inch 4 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 43 Hz, Qts 0.27, Vas 14.4 L, Xmax 4.7 mm, sensitivity 87.8 dB, plus 38 cm³ Vd and 143 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 £46.58.

The published T/S values agree with each other

Thiele/Small

Fs: 43Hz
Qts: 0.27
Qes: 0.30
Qms: 2.3
Vas: 14.4L
Re: 3.2Ω
Le: 0.30mH

Motor and cone

BL: 5.1T·m
Sd: 82cm²
Mms: 9g
Xmax: 4.7mm
Vd †: 38cm³
Voice coil: 25mm
Flux density: 1.10T

Power and response

Sensitivity †: 87.8dB
Manufacturer sensitivity: 90dB
Power: 40W
Impedance: 4Ω
EBP †: 143 · Leans vented

Size and mounting

Weight: 0.9kg

Other published values

Cms: 1.51mm/N

Sensitivity shows 87.8 dB, calculated from the T/S values. SB Acoustics publishes 90.0 dB, 2.2 dB apart.

Excursion and motor values come from the LF section; the frequency range spans every section.

† Calculated by bits from the published values

What this validation status means

Components and manufacturer details

LF · Primary · 5″

BL: 5.1T·m
Fs: 43Hz
Le: 0.30mH
Re: 3.2Ω
Sd: 82cm²
Cms: 1.51mm/N
Mms: 9g
Qes: 0.30
Qms: 2.3
Qts: 0.27
SPL: 87.8dB
Vas: 14.4L
Xmax: 4.7mm
Power: 40W
Impedance: 4Ω
Flux density: 1.10T
Sensitivity: 90dB
Calculated sensitivity †: 87.8dB
Manufacturer sensitivity: 90dB
Voice coil: 25mm
Weight: 0.9kg

Compare

Same-size drivers, compared with the SB13PFC25-4-COAX. Clear differences are green when better and red when worse.

This driverSB13PFC25-4-COAX

Best price

£46.58

43 Hz

Qts

0.27

Vas

14.4 L

5.1 T·m

Xmax

4.7 mm

Sensitivity

87.8 dB

Power

40 W

SB AcousticsSB13PFC25-4

£23.27 · 50% less

Fs44 Hz –

Qts0.29 +7%

Vas13.4 L −7%

BL5.3 T·m +4%

Xmax4.5 mm −3%

Sensitivity87.4 dB –

SB AcousticsSB13PFCR25-4

£23.27 · 50% less

Fs44 Hz –

Qts0.29 +7%

Vas13.4 L −7%

BL5.3 T·m +4%

Xmax9 mm +94%

Sensitivity87.4 dB –

SB AcousticsSB13PFCR25-4-COAX

£44.84 · 4% less

Fs43 Hz –

Qts0.27 –

Vas14.4 L –

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity87.8 dB –

SB AcousticsSB16PFC25-4-COAX

£48.27 · 4% more

Fs36 Hz −16%

Qts0.31 +15%

Vas31.3 L +117%

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity88.2 dB –

SB AcousticsSB15MFC30-4

£48.66 · 4% more

Fs36 Hz −17%

Qts0.28 +4%

Vas19.4 L +35%

BL4.8 T·m −6%

Xmax10 mm +115%

Sensitivity86.6 dB −1.2

SB AcousticsSB15NRX2C30-4

£49.12 · 5% more

Fs35 Hz −20%

Qts0.28 +4%

Vas20.5 L +42%

BL4.7 T·m −8%

Xmax10 mm +115%

Sensitivity86.5 dB −1.3

SB AcousticsSB16PFCR25-4-COAX

£49.62 · 7% more

Fs36 Hz −16%

Qts0.31 +15%

Vas31.3 L +117%

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity88.2 dB –

Dayton AudioCF120-4

£52.93 · 14% more

Fs53 Hz +24%

Qts0.28 +4%

Vas4.9 L −66%

BL4.9 T·m −3%

Xmax3.5 mm −25%

Sensitivity85.6 dB −2.2

Scanspeak15W/4424G00

£54.20 · 16% more

Fs46 Hz +7%

Qts0.24 −11%

Vas13.8 L −4%

BL5.2 T·m –

Xmax2.8 mm −40%

Sensitivity89.2 dB +1.4

SB AcousticsSB15NRXC30-4

£54.80 · 18% more

Fs41 Hz −5%

Qts0.29 +7%

Vas16.7 L +16%

BL4.7 T·m −8%

Xmax5 mm +8%

Sensitivity87.7 dB –

Scanspeak12W/4524G00

£55.94 · 20% more

Fs50 Hz +16%

Qts0.27 –

Vas8.2 L −43%

BL4.4 T·m −14%

Xmax3 mm −35%

Sensitivity87.4 dB –

Scanspeak15W/8434G00

£56.79 · 22% more

Fs45 Hz +5%

Qts0.25 −7%

Vas12.8 L −11%

BL7.3 T·m +43%

Xmax4.2 mm −10%

Sensitivity88.4 dB +0.6

CIAREHWB130

£61.87 · 33% more

Fs46 Hz +7%

Qts0.28 +4%

Vas12.5 L −13%

BL5.6 T·m +10%

Xmax4.5 mm −3%

Sensitivity88.3 dB +0.5

SB AcousticsSB15NAC30-4

£70.31 · 51% more

Fs35 Hz −19%

Qts0.30 +11%

Vas18.3 L +27%

BL4.8 T·m −6%

Xmax5 mm +8%

Sensitivity85.9 dB −1.9

SEASH1455-08 ER15RLY

£81.26 · 74% more

Fs44 Hz –

Qts0.32 +19%

Vas15 L +4%

BL5.5 T·m +8%

Xmax5 mm +8%

Sensitivity87 dB −0.8

Sica6 N 2.5 PL

£96.54 · 107% more

Fs80 Hz +86%

Qts0.27 –

Vas4.9 L −66%

BL13.5 T·m +165%

Xmax4.5 mm −3%

Sensitivity91.4 dB +3.6

SB AcousticsMW13P-4

£139.69 · 200% more

Fs41 Hz −5%

Qts0.27 –

Vas14.6 L –

BL4.9 T·m −4%

Xmax10 mm +115%

Sensitivity87.4 dB –

SB AcousticsMW13PNW-4

£139.69 · 200% more

Fs41 Hz −5%

Qts0.27 –

Vas14.6 L –

BL4.9 T·m −4%

Xmax10 mm +115%

Sensitivity87.4 dB –

SB AcousticsMW13P-8

£139.69 · 200% more

Fs42 Hz −3%

Qts0.30 +11%

Vas15 L +4%

BL5.7 T·m +12%

Xmax10 mm +115%

Sensitivity87.1 dB −0.7

SB AcousticsMW13PNW-8

£139.69 · 200% more

Fs41 Hz −5%

Qts0.31 +15%

Vas15 L +4%

BL5.7 T·m +12%

Xmax10 mm +115%

Sensitivity87 dB −0.8

SB AcousticsMW16PNW-4

£148.32 · 218% more

Fs28 Hz −35%

Qts0.27 –

Vas51.8 L +260%

BL5 T·m –

Xmax12 mm +158%

Sensitivity88 dB –

Scanspeak15M/4531K00

£150.70 · 224% more

Fs42 Hz –

Qts0.27 –

Vas16 L +11%

BL6 T·m +18%

Xmax3 mm −35%

Sensitivity88.3 dB +0.5

SB AcousticsMW16P-4

£150.87 · 224% more

Fs28 Hz −35%

Qts0.27 –

Vas50.2 L +249%

BL5.2 T·m –

Xmax12 mm +158%

Sensitivity88 dB –

SB AcousticsMW13TX-4

£228.00 · 390% more

Fs38 Hz −12%

Qts0.26 −4%

Vas16 L +11%

BL5 T·m –

Xmax10 mm +115%

Sensitivity87.2 dB −0.6

SB AcousticsMW16TX-4

£253.43 · 444% more

Fs29 Hz −33%

Qts0.27 –

Vas48 L +233%

BL5.2 T·m –

Xmax12 mm +158%

Sensitivity88.1 dB –

SB AcousticsMR13TX-4

£254.24 · 446% more

Fs44 Hz –

Qts0.27 –

Vas12.2 L −15%

BL4.9 T·m −4%

Xmax6 mm +29%

Sensitivity87.7 dB –

WavecorWF152BD06

No current price

Fs45 Hz +3%

Qts0.29 +7%

Vas11.5 L −20%

BL6.3 T·m +25%

Xmax4.5 mm −3%

Sensitivity87.3 dB −0.5

WavecorWF152BD14

No current price

Fs45 Hz +3%

Qts0.29 +7%

Vas11.5 L −20%

BL6.3 T·m +25%

Xmax4.5 mm −3%

Sensitivity87.3 dB −0.5

Audio Technology15 J 52 15 06 SD

No current price

Fs45 Hz +5%

Qts0.32 +19%

Vas15 L +4%

BL5.5 T·m +8%

Xmax5.2 mm +12%

Sensitivity87.7 dB –

WavecorWF152BD10

No current price

Fs49 Hz +14%

Qts0.32 +19%

Vas9.6 L −33%

BL5.8 T·m +14%

Xmax4.5 mm −3%

Sensitivity87.4 dB –

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Reviews

How reviews work

4.5 out of 5

from 2 ratings at 1 shop

SoundImports4.5 out of 52 ratings · Checked 12 Oct 2026
Read reviews on SoundImports

Each shop collects its own ratings. Bits shows them as published and doesn't verify them.

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
SoundImports Checked 12 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£46.58, the lowest price		6 in stock	Visit shop at SoundImports

Best price over time

Tracked since 1 Apr

bits00 AUDIO

5-inch LF driver · SB13 series · 25 mm voice coil · 40 W

SB Acoustics SB13PFC25-4-COAX 4Ω

4 Ω

2 ratings at 1 shop

£46.58

Steady

SoundImports · 6 in stock · Ships from Netherlands · All 1 offer

Open in 00 Simulator

Fs: 43Hz
Xmax: 4.7mm
SPL: 88dB
Pe: 40W
BL: 5.1T·m
Vd: 38cm³
Qts: 0.27
Vas: 14L

See all 21 specs

Published graphs

Specifications

Published by SB Acoustics

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 43Hz
Qts: 0.27
Qes: 0.30
Qms: 2.3
Vas: 14.4L
Re: 3.2Ω
Le: 0.30mH

Motor and cone

BL: 5.1T·m
Sd: 82cm²
Mms: 9g
Xmax: 4.7mm
Vd †: 38cm³
Voice coil: 25mm
Flux density: 1.10T

Power and response

Sensitivity †: 87.8dB
Manufacturer sensitivity: 90dB
Power: 40W
Impedance: 4Ω
EBP †: 143 · Leans vented

Size and mounting

Weight: 0.9kg

Other published values

Cms: 1.51mm/N

Sensitivity shows 87.8 dB, calculated from the T/S values. SB Acoustics publishes 90.0 dB, 2.2 dB apart.

Excursion and motor values come from the LF section; the frequency range spans every section.

† Calculated by bits from the published values

What this validation status means

Components and manufacturer details

LF · Primary · 5″

BL: 5.1T·m
Fs: 43Hz
Le: 0.30mH
Re: 3.2Ω
Sd: 82cm²
Cms: 1.51mm/N
Mms: 9g
Qes: 0.30
Qms: 2.3
Qts: 0.27
SPL: 87.8dB
Vas: 14.4L
Xmax: 4.7mm
Power: 40W
Impedance: 4Ω
Flux density: 1.10T
Sensitivity: 90dB
Calculated sensitivity †: 87.8dB
Manufacturer sensitivity: 90dB
Voice coil: 25mm
Weight: 0.9kg

Compare

Same-size drivers, compared with the SB13PFC25-4-COAX. Clear differences are green when better and red when worse.

This driverSB13PFC25-4-COAX

Best price

£46.58

43 Hz

Qts

0.27

Vas

14.4 L

5.1 T·m

Xmax

4.7 mm

Sensitivity

87.8 dB

Power

40 W

SB AcousticsSB13PFC25-4

£23.27 · 50% less

Fs44 Hz –

Qts0.29 +7%

Vas13.4 L −7%

BL5.3 T·m +4%

Xmax4.5 mm −3%

Sensitivity87.4 dB –

SB AcousticsSB13PFCR25-4

£23.27 · 50% less

Fs44 Hz –

Qts0.29 +7%

Vas13.4 L −7%

BL5.3 T·m +4%

Xmax9 mm +94%

Sensitivity87.4 dB –

SB AcousticsSB13PFCR25-4-COAX

£44.84 · 4% less

Fs43 Hz –

Qts0.27 –

Vas14.4 L –

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity87.8 dB –

SB AcousticsSB16PFC25-4-COAX

£48.27 · 4% more

Fs36 Hz −16%

Qts0.31 +15%

Vas31.3 L +117%

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity88.2 dB –

SB AcousticsSB15MFC30-4

£48.66 · 4% more

Fs36 Hz −17%

Qts0.28 +4%

Vas19.4 L +35%

BL4.8 T·m −6%

Xmax10 mm +115%

Sensitivity86.6 dB −1.2

SB AcousticsSB15NRX2C30-4

£49.12 · 5% more

Fs35 Hz −20%

Qts0.28 +4%

Vas20.5 L +42%

BL4.7 T·m −8%

Xmax10 mm +115%

Sensitivity86.5 dB −1.3

SB AcousticsSB16PFCR25-4-COAX

£49.62 · 7% more

Fs36 Hz −16%

Qts0.31 +15%

Vas31.3 L +117%

BL5.1 T·m –

Xmax4.7 mm –

Sensitivity88.2 dB –

Dayton AudioCF120-4

£52.93 · 14% more

Fs53 Hz +24%

Qts0.28 +4%

Vas4.9 L −66%

BL4.9 T·m −3%

Xmax3.5 mm −25%

Sensitivity85.6 dB −2.2

Scanspeak15W/4424G00

£54.20 · 16% more

Fs46 Hz +7%

Qts0.24 −11%

Vas13.8 L −4%

BL5.2 T·m –

Xmax2.8 mm −40%

Sensitivity89.2 dB +1.4

SB AcousticsSB15NRXC30-4

£54.80 · 18% more

Fs41 Hz −5%

Qts0.29 +7%

Vas16.7 L +16%

BL4.7 T·m −8%

Xmax5 mm +8%

Sensitivity87.7 dB –

Scanspeak12W/4524G00

£55.94 · 20% more

Fs50 Hz +16%

Qts0.27 –

Vas8.2 L −43%

BL4.4 T·m −14%

Xmax3 mm −35%

Sensitivity87.4 dB –

Scanspeak15W/8434G00

£56.79 · 22% more

Fs45 Hz +5%

Qts0.25 −7%

Vas12.8 L −11%

BL7.3 T·m +43%

Xmax4.2 mm −10%

Sensitivity88.4 dB +0.6

CIAREHWB130

£61.87 · 33% more

Fs46 Hz +7%

Qts0.28 +4%

Vas12.5 L −13%

BL5.6 T·m +10%

Xmax4.5 mm −3%

Sensitivity88.3 dB +0.5

SB AcousticsSB15NAC30-4

£70.31 · 51% more

Fs35 Hz −19%

Qts0.30 +11%

Vas18.3 L +27%

BL4.8 T·m −6%

Xmax5 mm +8%

Sensitivity85.9 dB −1.9

SEASH1455-08 ER15RLY

£81.26 · 74% more

Fs44 Hz –

Qts0.32 +19%

Vas15 L +4%

BL5.5 T·m +8%

Xmax5 mm +8%

Sensitivity87 dB −0.8

Sica6 N 2.5 PL

£96.54 · 107% more

Fs80 Hz +86%

Qts0.27 –

Vas4.9 L −66%

BL13.5 T·m +165%

Xmax4.5 mm −3%

Sensitivity91.4 dB +3.6

SB AcousticsMW13P-4

£139.69 · 200% more

Fs41 Hz −5%

Qts0.27 –

Vas14.6 L –

BL4.9 T·m −4%

Xmax10 mm +115%

Sensitivity87.4 dB –

SB AcousticsMW13PNW-4

£139.69 · 200% more

Fs41 Hz −5%

Qts0.27 –

Vas14.6 L –

BL4.9 T·m −4%

Xmax10 mm +115%

Sensitivity87.4 dB –

SB AcousticsMW13P-8

£139.69 · 200% more

Fs42 Hz −3%

Qts0.30 +11%

Vas15 L +4%

BL5.7 T·m +12%

Xmax10 mm +115%

Sensitivity87.1 dB −0.7

SB AcousticsMW13PNW-8

£139.69 · 200% more

Fs41 Hz −5%

Qts0.31 +15%

Vas15 L +4%

BL5.7 T·m +12%

Xmax10 mm +115%

Sensitivity87 dB −0.8

SB AcousticsMW16PNW-4

£148.32 · 218% more

Fs28 Hz −35%

Qts0.27 –

Vas51.8 L +260%

BL5 T·m –

Xmax12 mm +158%

Sensitivity88 dB –

Scanspeak15M/4531K00

£150.70 · 224% more

Fs42 Hz –

Qts0.27 –

Vas16 L +11%

BL6 T·m +18%

Xmax3 mm −35%

Sensitivity88.3 dB +0.5

SB AcousticsMW16P-4

£150.87 · 224% more

Fs28 Hz −35%

Qts0.27 –

Vas50.2 L +249%

BL5.2 T·m –

Xmax12 mm +158%

Sensitivity88 dB –

SB AcousticsMW13TX-4

£228.00 · 390% more

Fs38 Hz −12%

Qts0.26 −4%

Vas16 L +11%

BL5 T·m –

Xmax10 mm +115%

Sensitivity87.2 dB −0.6

SB AcousticsMW16TX-4

£253.43 · 444% more

Fs29 Hz −33%

Qts0.27 –

Vas48 L +233%

BL5.2 T·m –

Xmax12 mm +158%

Sensitivity88.1 dB –

SB AcousticsMR13TX-4

£254.24 · 446% more

Fs44 Hz –

Qts0.27 –

Vas12.2 L −15%

BL4.9 T·m −4%

Xmax6 mm +29%

Sensitivity87.7 dB –

WavecorWF152BD06

No current price

Fs45 Hz +3%

Qts0.29 +7%

Vas11.5 L −20%

BL6.3 T·m +25%

Xmax4.5 mm −3%

Sensitivity87.3 dB −0.5

WavecorWF152BD14

No current price

Fs45 Hz +3%

Qts0.29 +7%

Vas11.5 L −20%

BL6.3 T·m +25%

Xmax4.5 mm −3%

Sensitivity87.3 dB −0.5

Audio Technology15 J 52 15 06 SD

No current price

Fs45 Hz +5%

Qts0.32 +19%

Vas15 L +4%

BL5.5 T·m +8%

Xmax5.2 mm +12%

Sensitivity87.7 dB –

WavecorWF152BD10

No current price

Fs49 Hz +14%

Qts0.32 +19%

Vas9.6 L −33%

BL5.8 T·m +14%

Xmax4.5 mm −3%

Sensitivity87.4 dB –

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Reviews

How reviews work

4.5 out of 5

from 2 ratings at 1 shop

SoundImports4.5 out of 52 ratings · Checked 12 Oct 2026
Read reviews on SoundImports

Each shop collects its own ratings. Bits shows them as published and doesn't verify them.

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
SoundImports Checked 12 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£46.58, the lowest price		6 in stock	Visit shop at SoundImports

Best price over time

Tracked since 1 Apr