SB AcousticsSB13PFC25-4
£22.98 · 56% less, betterFs44 Hz −17%, better
Qts0.29 +4%
Vas13.4 L +175%, worse
BL5.3 T·m +7%
Xmax4.5 mm +29%, better
Sensitivity87.4 dB +1.8
4.5-inch LF driver · 30 W
Dayton Audio CF120-4 4Ω
4 Ω · 50–15000 Hz
£52.29
25%SoundImports · 82 in stock · Ships from Netherlands · All 3 offers
- Fs
- 53Hz
- Xmax
- 3.5mm
- SPL
- 86dB
- Pe
- 30W
- BL
- 4.9T·m
- Vd
- 18cm³
- Qts
- 0.28
- Vas
- 5L
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
15 degrees
Frequency response
240 plotted pointsMedium confidence645 selected pixels of 963 - Trace datasheet-response-trace-poc/v1
30 degrees
Frequency response
218 plotted pointsMedium confidence504 selected pixels of 745 - Trace datasheet-response-trace-poc/v1
45 degrees
Frequency response
240 plotted pointsMedium confidence625 selected pixels of 1,063
Dayton Audio CF120-4 is a 4.5-inch 4 ohm LF driver rated at 30 W RMS. The validated T/S data includes Fs 53 Hz, Qts 0.28, Vas 4.9 L, Xmax 3.5 mm, sensitivity 85.6 dB, plus 18 cm³ Vd and 166 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 £52.29.
The published T/S values agree with each other
Thiele/Small
- Fs
- 53Hz
- Qts
- 0.28
- Qes
- 0.32
- Qms
- 1.9
- Vas
- 4.9L
- Re
- 3.4Ω
- Le
- 0.45mH
Motor and cone
- BL
- 4.9T·m
- Sd
- 52cm²
- Mms
- 7g
- Xmax
- 3.5mm
- Vd †
- 18cm³
Power and response
- Sensitivity †
- 85.6dB
- Manufacturer sensitivity
- 89.1dB
- Power
- 30W
- Impedance
- 4Ω
- Range
- 50–15000Hz
- EBP †
- 166 · Leans vented
Size and mounting
- Diameter
- 101.6mm
- Cutout
- 101.6mm
- Depth
- 50.8mm
Other published values
- Cms
- 1.31mm/N
- Power Peak
- 60
Sensitivity shows 85.6 dB, calculated from the T/S values. Dayton Audio publishes 89.1 dB, 3.5 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Dayton Audio lists
LF · Primary · 4.5″
- BL
- 4.9T·m
- Fs
- 53Hz
- Le
- 0.45mH
- Re
- 3.4Ω
- Sd
- 52cm²
- Cms
- 1.31mm/N
- Mms
- 7g
- Qes
- 0.32
- Qms
- 1.9
- Qts
- 0.28
- SPL
- 85.6dB
- Vas
- 4.9L
- Xmax
- 3.5mm
- Power
- 30W
- Impedance
- 4Ω
- Power Peak
- 60
- Sensitivity
- 89.1dB
- Low limit
- 50Hz
- Calculated sensitivity †
- 85.6dB
- High limit
- 15000Hz
- Manufacturer sensitivity
- 89.1dB
- Diameter
- 101.6mm
- Depth
- 50.8mm
- Cutout
- 101.6mm
02
Compare
Same-size drivers, compared with the CF120-4. Clear differences are green when better and red when worse.
This driverCF120-4
Best price
£52.29
Fs
53 Hz
Qts
0.28
Vas
4.9 L
BL
4.9 T·m
Xmax
3.5 mm
Sensitivity
85.6 dB
Power
30 W
SB AcousticsSB12PAC25-4
£23.67 · 55% less, betterFs53 Hz –
Qts0.31 +11%, worse
Vas5.3 L +9%
BL4.3 T·m −12%, worse
Xmax5 mm +43%, better
Sensitivity85.7 dB –
SB AcousticsSB12PACR25-4
£23.67 · 55% less, betterFs53 Hz –
Qts0.31 +11%, worse
Vas5.3 L +9%
BL4.3 T·m −12%, worse
Xmax5 mm +43%, better
Sensitivity85.7 dB –
CIAREHW100
£27.63 · 47% less, betterFs70 Hz +32%, worse
Qts0.31 +11%, worse
Vas4.3 L −12%, better
BL5.6 T·m +13%, better
Xmax4.3 mm +23%, better
Sensitivity88 dB +2.4, better
Sica5 F 1.5 CP
£38.51 · 26% less, betterFs61 Hz +15%, worse
Qts0.30 +7%
Vas6.8 L +40%, worse
BL7.6 T·m +53%, better
Xmax3.5 mm –
Sensitivity88.7 dB +3.1, better
WavecorWF118WA07
£47.13 · 10% less, betterFs56 Hz +5%
Qts0.36 +29%, worse
Vas4.9 L –
BL4.5 T·m −9%
Xmax4 mm +14%, better
Sensitivity85.6 dB –
SB AcousticsSB15MFC30-4
£48.66 · 7% less, betterFs36 Hz −33%, better
Qts0.28 –
Vas19.4 L +298%, worse
BL4.8 T·m –
Xmax5 mm +43%, better
Sensitivity86.6 dB +1
SB AcousticsSB15NRX2C30-4
£49.12 · 6% less, betterFs35 Hz −35%, better
Qts0.28 –
Vas20.5 L +321%, worse
BL4.7 T·m −5%
Xmax5 mm +43%, better
Sensitivity86.5 dB +0.9
SB AcousticsSB15NRXC30-4
£54.13 · 4% moreFs41 Hz −23%, better
Qts0.29 +4%
Vas16.7 L +243%, worse
BL4.7 T·m −5%
Xmax5 mm +43%, better
Sensitivity87.7 dB +2.1, better
Scanspeak12W/4524G00
£55.26 · 6% more, worseFs50 Hz −6%
Qts0.27 −4%
Vas8.2 L +68%, worse
BL4.4 T·m −11%, worse
Xmax3 mm −14%, worse
Sensitivity87.4 dB +1.8
SB AcousticsSB12CACS25-4
£58.31 · 12% more, worseFs51 Hz −4%
Qts0.31 +11%, worse
Vas5.7 L +17%, worse
BL4.3 T·m −13%, worse
Xmax5 mm +43%, better
Sensitivity85.6 dB –
SB AcousticsSB15NBAC30-4
£69.45 · 33% more, worseFs33 Hz −38%, better
Qts0.29 +4%
Vas21 L +331%, worse
BL4.7 T·m −5%
Xmax5 mm +43%, better
Sensitivity85.9 dB –
SB AcousticsSB15NAC30-4
£69.45 · 33% more, worseFs35 Hz −34%, better
Qts0.30 +7%
Vas18.3 L +276%, worse
BL4.8 T·m –
Xmax5 mm +43%, better
Sensitivity85.9 dB –
FaitalPRO5PR120
£70.33 · 35% more, worseFs100 Hz +88%, worse
Qts0.27 −4%
Vas4.2 L −14%, better
BL10 T·m +102%, better
Xmax3.1 mm −11%, worse
Sensitivity93.8 dB +8.2, better
B&C5FG44
£74.52 · 43% more, worseFs63 Hz +18%, worse
Qts0.27 −4%
Vas6.3 L +29%, worse
BL10 T·m +102%, better
Xmax3 mm −14%, worse
Sensitivity89.2 dB +3.6, better
WavecorWF118WA01
£76.45 · 46% more, worseFs64 Hz +20%, worse
Qts0.36 +29%, worse
Vas4.3 L −12%, better
BL4.6 T·m −7%
Xmax3 mm −14%, worse
Sensitivity86.8 dB +1.2
SEASH1152-08 CA12RCY
£79.46 · 52% more, worseFs57 Hz +7%
Qts0.31 +11%, worse
Vas5 L –
BL6.3 T·m +29%, better
Xmax3 mm −14%, worse
Sensitivity86.1 dB +0.5
Tang BandW4-2315
£175.00 · 235% more, worseFs65 Hz +22%, worse
Qts0.29 +4%
Vas5.0 L –
BL6.2 T·m +26%, better
Xmax2.8 mm −20%, worse
Sensitivity88.5 dB +2.9, better
SB AcousticsMR13TX-4
£251.15 · 380% more, worseFs44 Hz −17%, better
Qts0.27 −4%
Vas12.2 L +151%, worse
BL4.9 T·m –
Xmax3 mm −14%, worse
Sensitivity87.7 dB +2.1, better
PurifiPTT4.0M08-NAC-03
£251.15 · 380% more, worseFs50 Hz −6%
Qts0.32 +14%, worse
Vas4.9 L –
BL7 T·m +42%, better
Xmax2.9 mm −17%, worse
Sensitivity84.6 dB −1
Scanspeak12MU/8731T00
£263.71 · 404% more, worseFs66 Hz +24%, worse
Qts0.29 +4%
Vas5.8 L +19%, worse
BL6.1 T·m +23%, better
Xmax3.4 mm –
Sensitivity89.3 dB +3.7, better
Scanspeak12MU/4731T00
£267.60 · 412% more, worseFs64 Hz +20%, worse
Qts0.24 −14%, better
Vas5.4 L +11%, worse
BL5.1 T·m +3%
Xmax3.5 mm –
Sensitivity89.4 dB +3.8, better
PurifiPTT4.0M04-NAC-03
No current priceFs48 Hz −10%
Qts0.28 –
Vas5 L –
BL5.9 T·m +19%, better
Xmax2.9 mm −17%, worse
Sensitivity84.7 dB −0.9
Tang BandW4-657D
No current priceFs70 Hz +32%, worse
Qts0.32 +14%, worse
Vas5.6 L +15%, worse
BL5.6 T·m +14%, better
Xmax3.3 mm −6%
Sensitivity89.4 dB +3.8, better
CIAREHWL100
No current priceFs70 Hz +32%, worse
Qts0.31 +11%, worse
Vas4.3 L −12%, better
BL5.6 T·m +13%, better
Xmax4.3 mm +23%, better
Sensitivity88 dB +2.4, better
PurifiPTT4.0M04-NFC-01
No current priceFs46 Hz −14%, better
Qts0.25 −11%, better
Vas5.4 L +11%, worse
BL6 T·m +21%, better
Xmax2.9 mm −17%, worse
Sensitivity84.9 dB −0.7
PurifiPTT4.0M08-NFC-01
No current priceFs48 Hz −10%
Qts0.31 +11%, worse
Vas5.3 L +9%
BL7 T·m +42%, better
Xmax2.9 mm −17%, worse
Sensitivity84.5 dB −1.1
Sica5.5 C 1.5 CP
No current priceFs62 Hz +17%, worse
Qts0.31 +11%, worse
Vas5.4 L +11%, worse
BL7.9 T·m +60%, better
Xmax4 mm +14%, better
Sensitivity87.8 dB +2.2, better
Tang BandW4-937SF
No current priceFs65 Hz +22%, worse
Qts0.26 −7%
Vas4.9 L –
BL6.7 T·m +35%, better
Xmax4.5 mm +29%, better
Sensitivity88.1 dB +2.5, better
Dayton AudioCFC150-4
No current priceFs77 Hz +45%, worse
Qts0.70 +150%, worse
Vas4.2 L −14%, better
BL4.7 T·m −5%
Xmax3.5 mm –
Sensitivity85.6 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 54 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 |
|---|---|---|---|---|
SoundImports Import VAT and duty may apply | £52.29, the lowest price | 82 in stock | Visit shop at SoundImports | |
RumoH Import VAT and duty may apply | £41.78 | Out of stock | Visit shop at RumoH | |
Audiophonics Import VAT and duty may apply | £49.88 | Available on order | Visit shop at Audiophonics |
Best price over time
Tracked since 1 Apr