SB AcousticsSB20PFCR30-8
£33.07 · 71% less, betterFs34 Hz +36%, worse
Qts0.37 −8%
Vas66.2 L −24%, better
BL7.7 T·m –
Xmax5.8 mm −12%, worse
Sensitivity89.8 dB +2.9, better
8-inch LF driver · SB23 series · 46 mm voice coil · 50 W
SB Acoustics SB23CACS45-8 8Ω
8 Ω
£114.02
SteadyLean Business · All 6 offers
- Fs
- 25Hz
- Xmax
- 6.5mm
- SPL
- 87dB
- Pe
- 50W
- BL
- 7.9T·m
- Vd
- 140cm³
- Qts
- 0.40
- Vas
- 87L
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 1 trace
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 confidence2,734 selected pixels of 6,936
Published graphs
SB Acoustics SB23CACS45-8 is an 8-inch 8 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 25 Hz, Qts 0.40, Vas 87 L, Xmax 6.5 mm, sensitivity 86.9 dB, plus 140 cm³ Vd and 57 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 £114.02.
The published T/S values agree with each other
Thiele/Small
- Fs
- 25Hz
- Qts
- 0.40
- Qes
- 0.44
- Qms
- 5.4
- Vas
- 87L
- Re
- 5.6Ω
- Le
- 0.60mH
Motor and cone
- BL
- 7.9T·m
- Sd
- 216cm²
- Mms
- 31g
- Xmax
- 6.5mm
- Vd †
- 140cm³
- Voice coil
- 46mm
- Flux density
- 0.86T
Power and response
- Sensitivity †
- 86.9dB
- Manufacturer sensitivity
- 87.5dB
- Power
- 50W
- Impedance
- 8Ω
- EBP †
- 57 · Sealed or vented
Size and mounting
- Weight
- 2.7kg
Other published values
- Cms
- 1.31mm/N
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 8″
- BL
- 7.9T·m
- Fs
- 25Hz
- Le
- 0.60mH
- Re
- 5.6Ω
- Sd
- 216cm²
- Cms
- 1.31mm/N
- Mms
- 31g
- Qes
- 0.44
- Qms
- 5.4
- Qts
- 0.40
- SPL
- 86.9dB
- Vas
- 87L
- Xmax
- 6.5mm
- Power
- 50W
- Impedance
- 8Ω
- Flux density
- 0.86T
- Sensitivity
- 87.5dB
- Calculated sensitivity †
- 86.9dB
- Manufacturer sensitivity
- 87.5dB
- Voice coil
- 46mm
- Weight
- 2.7kg
02
Compare
Same-size drivers, compared with the SB23CACS45-8. Clear differences are green when better and red when worse.
This driverSB23CACS45-8
Best price
£114.02
Fs
25 Hz
Qts
0.40
Vas
87 L
BL
7.9 T·m
Xmax
6.5 mm
Sensitivity
86.9 dB
Power
50 W
SB AcousticsSB20PFC30-8
£35.17 · 69% less, betterFs34 Hz +36%, worse
Qts0.37 −8%
Vas66.2 L −24%, better
BL7.7 T·m –
Xmax5.7 mm −13%, worse
Sensitivity89.8 dB +2.9, better
CIAREHW202
£49.40 · 57% less, betterFs30 Hz +20%, worse
Qts0.44 +10%
Vas83 L −5%
BL6.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity88.4 dB +1.5
Dayton AudioSD215A-88
£50.20 · 56% less, betterFs31 Hz +24%, worse
Qts0.39 –
Vas38.2 L −56%, better
BL7.7 T·m –
Xmax6 mm −8%
Sensitivity86.1 dB −0.8
Beyma8BR40
£53.89 · 53% less, betterFs30 Hz +20%, worse
Qts0.39 –
Vas89.1 L –
BL6.8 T·m −14%, worse
Xmax6.7 mm +3%
Sensitivity89 dB +2.1, better
CIAREHWB200
£63.09 · 45% less, betterFs32 Hz +28%, worse
Qts0.39 –
Vas59 L −32%, better
BL8.9 T·m +13%, better
Xmax7 mm +8%
Sensitivity88.8 dB +1.9
SB AcousticsSB23NRXS45-8
£84.41 · 26% less, betterFs27 Hz +8%
Qts0.38 −5%
Vas94 L +8%
BL7.5 T·m −5%
Xmax6.5 mm –
Sensitivity88.6 dB +1.7
Scanspeak22W/8534G00
£85.75 · 25% less, betterFs30 Hz +20%, worse
Qts0.39 –
Vas94.2 L +8%
BL7.8 T·m –
Xmax5.8 mm −11%, worse
Sensitivity89.7 dB +2.8, better
Dayton AudioRS225P-8A
£87.88 · 23% less, betterFs32 Hz +26%, worse
Qts0.34 −15%, better
Vas68.8 L −21%, better
BL8.5 T·m +8%
Xmax7 mm +8%
Sensitivity88.8 dB +1.9
SB AcousticsSB23NACS45-8
£88.56 · 22% less, betterFs25 Hz –
Qts0.37 −8%
Vas94 L +8%
BL7.9 T·m –
Xmax6.5 mm –
Sensitivity87.7 dB +0.8
SB AcousticsSB23NACS45-4
£88.56 · 22% less, betterFs23 Hz −8%
Qts0.33 −18%, better
Vas95 L +9%
BL6.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity87.2 dB –
SB AcousticsSB23NBACS45-8
£97.88 · 14% less, betterFs25 Hz –
Qts0.40 –
Vas93.4 L +7%
BL7.9 T·m –
Xmax6.5 mm –
Sensitivity87.3 dB –
SB AcousticsSB23NBACS45-4
£98.70 · 13% less, betterFs23 Hz −8%
Qts0.33 −18%, better
Vas95 L +9%
BL6.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity87.2 dB –
MonacorSPH-220HQ
£104.66 · 8% less, betterFs30 Hz +20%, worse
Qts0.40 –
Vas80 L −8%
BL7.6 T·m −3%
Xmax5.5 mm −15%, worse
Sensitivity88.7 dB +1.8
SEASH1288-08 CA22RNX
£119.94 · 5% more, worseFs29 Hz +16%, worse
Qts0.41 –
Vas97 L +11%, worse
BL7 T·m −11%, worse
Xmax6 mm −8%
Sensitivity88.6 dB +1.7
VisatonAL 200
£150.67 · 32% more, worseFs32 Hz +28%, worse
Qts0.35 −13%, better
Vas77 L −11%, better
BL8.8 T·m +11%, better
Xmax7 mm +8%
Sensitivity90.1 dB +3.2, better
Scanspeak18W/8531G00
£168.81 · 48% more, worseFs28 Hz +12%, worse
Qts0.36 −10%, better
Vas58.2 L −33%, better
BL6.8 T·m −14%, worse
Xmax6.5 mm –
Sensitivity87.2 dB –
ETON8-512/C8/32 HEX
£184.17 · 62% more, worseFs27 Hz +8%
Qts0.40 –
Vas102 L +17%, worse
BL7.8 T·m –
Xmax5.5 mm −15%, worse
Sensitivity88.7 dB +1.8
SB AcousticsWO24P-4
£195.93 · 72% more, worseFs28 Hz +12%, worse
Qts0.40 –
Vas71 L −18%, better
BL7.6 T·m −4%
Xmax8.5 mm +31%, better
Sensitivity87.7 dB +0.8
WavecorWF223BD01
£205.39 · 80% more, worseFs33 Hz +30%, worse
Qts0.39 –
Vas45 L −48%, better
BL7.7 T·m –
Xmax6.5 mm –
Sensitivity87.9 dB +1
AccutonC220-6-221
£491.94 · 331% more, worseFs26 Hz +5%
Qts0.40 –
Vas86.2 L –
BL8.7 T·m +10%, better
Xmax5 mm −23%, worse
Sensitivity87.8 dB +0.9
£527.46 · 363% more, worse
Fs25 Hz –
Qts0.39 –
Vas93 L +7%
BL8.3 T·m +5%
Xmax7 mm +8%
Sensitivity87.2 dB –
HiViS8.8N
No current priceFs32 Hz +28%, worse
Qts0.41 –
Vas85.3 L –
BL8 T·m –
Xmax4.3 mm −34%, worse
Sensitivity90 dB +3.1, better
MarkaudioMA200-P MICA
No current priceFs39 Hz +56%, worse
Qts0.37 −7%
Vas66.5 L −24%, better
BL7.0 T·m −11%, worse
Xmax7 mm +8%
Sensitivity91.5 dB +4.6, better
HiViS8-98R
No current priceFs33 Hz +32%, worse
Qts0.42 +5%
Vas65.2 L −25%, better
BL6.9 T·m −13%, worse
Xmax6 mm −8%
Sensitivity89 dB +2.1, better
HiViSS8R
No current priceFs30 Hz +20%, worse
Qts0.35 −13%, better
Vas92.9 L +7%
BL6.6 T·m −16%, worse
Xmax6 mm −8%
Sensitivity90 dB +3.1, better
CIARECW202
No current priceFs40 Hz +60%, worse
Qts0.41 –
Vas48 L −45%, better
BL6.5 T·m −17%, worse
Xmax6.5 mm –
Sensitivity90.1 dB +3.2, better
HiViSS8
No current priceFs30 Hz +20%, worse
Qts0.33 −18%, better
Vas83.3 L −4%
BL6.8 T·m −14%, worse
Xmax6 mm −8%
Sensitivity89.6 dB +2.7, better
SB AcousticsMW19PF-8
No current priceFs30 Hz +20%, worse
Qts0.34 −15%, better
Vas63 L −28%, better
BL7 T·m −11%, worse
Xmax6.5 mm –
Sensitivity88.7 dB +1.8
RS SpeakersW 220.50 FIBONACCI
No current priceFs33 Hz +34%, worse
Qts0.36 −10%, better
Vas55.6 L −36%, better
BL8.6 T·m +9%
Xmax6 mm −8%
Sensitivity89.3 dB +2.4, better
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 | £114.02, the lowest price | Stock not listed | Visit shop at Lean Business | |
Lean Audio | £114.02 | Back order | Visit shop at Lean Audio | |
Willys-Hifi | £144.10 | 26% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £127.23 | 12% above the lowest price | Back order | Visit shop at SoundImports |
RumoH Import VAT and duty may apply | £130.60 | 15% above the lowest price | Stock not listed | Visit shop at RumoH |
Best price over time
Tracked since 1 Apr
Recent changes
- 22 OctWillys-Hifi£130.25 → £144.10Up 11% from £130.25
- 1 OctWillys-Hifi£133.95 → £130.25Down 2.8% from £133.95
- 30 SepWillys-Hifi£132.95 → £133.95Up 0.8% from £132.95