SB AcousticsSB13PFC25-4
£22.98 · 53% less, betterFs44 Hz +24%, worse
Qts0.29 +4%
Vas13.4 L −31%, better
BL5.3 T·m +10%, better
Xmax4.5 mm −10%, worse
Sensitivity87.4 dB +0.8
5-inch LF driver · SB15 series · 31 mm voice coil · 50 W
SB Acoustics SB15MFC30-4 4Ω
4 Ω
£48.66
SteadyLean Business · All 6 offers
- Fs
- 36Hz
- Xmax
- 5mm
- SPL
- 87dB
- Pe
- 50W
- BL
- 4.8T·m
- Vd
- 41cm³
- Qts
- 0.28
- Vas
- 19L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 3 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
30 degrees
Frequency response
240 plotted pointsMedium confidence1,226 selected pixels of 7,958 - Trace datasheet-response-trace-poc/v1
60 degrees
Frequency response
240 plotted pointsMedium confidence754 selected pixels of 2,043 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence2,315 selected pixels of 6,033
Published graphs
SB Acoustics SB15MFC30-4 is a 5-inch 4 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 36 Hz, Qts 0.28, Vas 19.4 L, Xmax 5 mm, sensitivity 86.6 dB, plus 41 cm³ Vd and 118 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 £48.66.
The published T/S values agree with each other
Thiele/Small
- Fs
- 36Hz
- Qts
- 0.28
- Qes
- 0.30
- Qms
- 5.3
- Vas
- 19.4L
- Re
- 3.1Ω
- Le
- 0.12mH
Motor and cone
- BL
- 4.8T·m
- Sd
- 82cm²
- Mms
- 10g
- Xmax
- 5mm
- Vd †
- 41cm³
- Voice coil
- 31mm
- Flux density
- 1T
Power and response
- Sensitivity †
- 86.6dB
- Manufacturer sensitivity
- 90dB
- Power
- 50W
- Impedance
- 4Ω
- EBP †
- 118 · Leans vented
Size and mounting
- Weight
- 1.5kg
Other published values
- Cms
- 2.03mm/N
Sensitivity shows 86.6 dB, calculated from the T/S values. SB Acoustics publishes 90.0 dB, 3.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 5″
- BL
- 4.8T·m
- Fs
- 36Hz
- Le
- 0.12mH
- Re
- 3.1Ω
- Sd
- 82cm²
- Cms
- 2.03mm/N
- Mms
- 10g
- Qes
- 0.30
- Qms
- 5.3
- Qts
- 0.28
- SPL
- 86.6dB
- Vas
- 19.4L
- Xmax
- 5mm
- Power
- 50W
- Impedance
- 4Ω
- Flux density
- 1T
- Sensitivity
- 90dB
- Calculated sensitivity †
- 86.6dB
- Manufacturer sensitivity
- 90dB
- Voice coil
- 31mm
- Weight
- 1.5kg
02
Compare
Same-size drivers, compared with the SB15MFC30-4. Clear differences are green when better and red when worse.
This driverSB15MFC30-4
Best price
£48.66
Fs
36 Hz
Qts
0.28
Vas
19.4 L
BL
4.8 T·m
Xmax
5 mm
Sensitivity
86.6 dB
Power
50 W
SB AcousticsSB13PFCR25-4
£22.98 · 53% less, betterFs44 Hz +24%, worse
Qts0.29 +4%
Vas13.4 L −31%, better
BL5.3 T·m +10%, better
Xmax4.5 mm −10%, worse
Sensitivity87.4 dB +0.8
SB AcousticsSB12PAC25-4
£23.67 · 51% less, betterFs53 Hz +48%, worse
Qts0.31 +11%, worse
Vas5.3 L −73%, better
BL4.3 T·m −9%
Xmax5 mm –
Sensitivity85.7 dB −0.9
SB AcousticsSB12PACR25-4
£23.67 · 51% less, betterFs53 Hz +48%, worse
Qts0.31 +11%, worse
Vas5.3 L −73%, better
BL4.3 T·m −9%
Xmax5 mm –
Sensitivity85.7 dB −0.9
SB AcousticsSB13PFCR25-4-COAX
£44.29 · 9% less, betterFs43 Hz +21%, worse
Qts0.27 −4%
Vas14.4 L −26%, better
BL5.1 T·m +6%
Xmax4.7 mm −7%
Sensitivity87.8 dB +1.2
SB AcousticsSB13PFC25-4-COAX
£46.01 · 5% less, betterFs43 Hz +21%, worse
Qts0.27 −4%
Vas14.4 L −26%, better
BL5.1 T·m +6%
Xmax4.7 mm −7%
Sensitivity87.8 dB +1.2
SB AcousticsSB15NRX2C30-4
£49.12 · Same priceFs35 Hz –
Qts0.28 –
Vas20.5 L +6%
BL4.7 T·m –
Xmax5 mm –
Sensitivity86.5 dB –
SB AcousticsSB15NRX2C30-8
£49.12 · Same priceFs37 Hz –
Qts0.34 +21%, worse
Vas20 L +3%
BL5.8 T·m +20%, better
Xmax5 mm –
Sensitivity86.2 dB –
SB AcousticsSB15NRXC30-4
£54.13 · 11% more, worseFs41 Hz +15%, worse
Qts0.29 +4%
Vas16.7 L −14%, better
BL4.7 T·m –
Xmax5 mm –
Sensitivity87.7 dB +1.1
SB AcousticsSB15NRXC30-8
£54.13 · 11% more, worseFs38 Hz +7%
Qts0.33 +18%, worse
Vas20.7 L +7%
BL5.6 T·m +17%, better
Xmax5 mm –
Sensitivity87.1 dB +0.5
SB AcousticsSB17MFC35-4
£54.89 · 13% more, worseFs30 Hz −15%, better
Qts0.28 –
Vas45 L +132%, worse
BL4.9 T·m –
Xmax5.5 mm +10%, better
Sensitivity88.1 dB +1.5
SB AcousticsSB12CACS25-4
£58.31 · 20% more, worseFs51 Hz +44%, worse
Qts0.31 +11%, worse
Vas5.7 L −71%, better
BL4.3 T·m −10%, worse
Xmax5 mm –
Sensitivity85.6 dB −1
CIAREHWB130
£61.12 · 26% more, worseFs46 Hz +30%, worse
Qts0.28 –
Vas12.5 L −36%, better
BL5.6 T·m +17%, better
Xmax4.5 mm −10%, worse
Sensitivity88.3 dB +1.7
SB AcousticsSB17NBAC35-4
£65.93 · 35% more, worseFs30 Hz −15%, better
Qts0.29 +4%
Vas42.6 L +120%, worse
BL4.9 T·m –
Xmax5.5 mm +10%, better
Sensitivity87.7 dB +1.1
SB AcousticsSB15NBAC30-4
£69.45 · 43% more, worseFs33 Hz −7%
Qts0.29 +4%
Vas21 L +8%
BL4.7 T·m –
Xmax5 mm –
Sensitivity85.9 dB −0.7
SB AcousticsSB15NAC30-4
£69.45 · 43% more, worseFs35 Hz –
Qts0.30 +7%
Vas18.3 L −6%
BL4.8 T·m –
Xmax5 mm –
Sensitivity85.9 dB −0.7
SB AcousticsSB17NRX2L35-8
£71.13 · 46% more, worseFs38 Hz +6%
Qts0.28 –
Vas26.1 L +35%, worse
BL7.8 T·m +63%, better
Xmax4.8 mm −4%
Sensitivity88.7 dB +2.1, better
SB AcousticsSB15CAC30-4
£76.56 · 57% more, worseFs33 Hz −8%
Qts0.31 +11%, worse
Vas20.2 L +4%
BL4.6 T·m −4%
Xmax5 mm –
Sensitivity85.1 dB −1.5
SB AcousticsSB15CRC30-4
£81.08 · 67% more, worseFs37 Hz +4%
Qts0.32 +14%, worse
Vas17.3 L −11%, better
BL4.5 T·m −5%
Xmax5.5 mm +10%, better
Sensitivity85.9 dB −0.7
SB AcousticsSB17CAC35-4
£82.13 · 69% more, worseFs30 Hz −17%, better
Qts0.29 +4%
Vas37.8 L +95%, worse
BL5.3 T·m +10%, better
Xmax5.5 mm +10%, better
Sensitivity87 dB –
SB AcousticsMW13P-4
£139.69 · 187% more, worseFs41 Hz +15%, worse
Qts0.27 −4%
Vas14.6 L −25%, better
BL4.9 T·m –
Xmax5 mm –
Sensitivity87.4 dB +0.8
SB AcousticsMW13PNW-4
£139.69 · 187% more, worseFs41 Hz +15%, worse
Qts0.27 −4%
Vas14.6 L −25%, better
BL4.9 T·m –
Xmax5 mm –
Sensitivity87.4 dB +0.8
SB AcousticsMW13P-8
£139.69 · 187% more, worseFs42 Hz +17%, worse
Qts0.30 +7%
Vas15 L −23%, better
BL5.7 T·m +19%, better
Xmax5 mm –
Sensitivity87.1 dB +0.5
SB AcousticsMW13PNW-8
£139.69 · 187% more, worseFs41 Hz +15%, worse
Qts0.31 +11%, worse
Vas15 L −23%, better
BL5.7 T·m +19%, better
Xmax5 mm –
Sensitivity87 dB –
SB AcousticsMW16PNW-4
£148.32 · 205% more, worseFs28 Hz −21%, better
Qts0.27 −4%
Vas51.8 L +167%, worse
BL5 T·m +4%
Xmax6 mm +20%, better
Sensitivity88 dB +1.4
SB AcousticsMW13TX-4
£225.24 · 363% more, worseFs38 Hz +7%
Qts0.26 −7%
Vas16 L −18%, better
BL5 T·m +4%
Xmax5 mm –
Sensitivity87.2 dB +0.6
SB AcousticsMW13TX-8
£225.24 · 363% more, worseFs40 Hz +13%, worse
Qts0.32 +14%, worse
Vas14.8 L −24%, better
BL5.7 T·m +19%, better
Xmax5 mm –
Sensitivity86.5 dB –
SB AcousticsMR13TX-4
£251.15 · 416% more, worseFs44 Hz +24%, worse
Qts0.27 −4%
Vas12.2 L −37%, better
BL4.9 T·m –
Xmax3 mm −40%, worse
Sensitivity87.7 dB +1.1
AccutonC158-6-851
£293.02 · 502% more, worseFs31 Hz −13%, better
Qts0.28 –
Vas25.7 L +32%, worse
BL8.7 T·m +81%, better
Xmax5 mm –
Sensitivity86.2 dB –
WavecorWF152BD06
No current priceFs45 Hz +25%, worse
Qts0.29 +4%
Vas11.5 L −41%, better
BL6.3 T·m +32%, better
Xmax4.5 mm −10%, worse
Sensitivity87.3 dB +0.7
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lean Business | £48.66, the lowest price | Stock not listed | Visit shop at Lean Business | |
Lean Audio | £48.66 | Back order | Visit shop at Lean Audio | |
Willys-Hifi | £65.16 | 34% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
RumoH Import VAT and duty may apply | £55.74 | 15% above the lowest price | Stock not listed | Visit shop at RumoH |
SoundImports Import VAT and duty may apply | £57.31 | 18% above the lowest price | 6 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£66.95 → £65.16Down 2.7% from £66.95
- 4 AugWillys-Hifi£64.95 → £66.95Up 3.1% from £64.95
- 23 JulWillys-Hifi£65.95 → £64.95Down 1.5% from £65.95