SB AcousticsSB20PFC30-8
£35.60 · 60% less, betterFs34 Hz +36%, worse
Qts0.37 –
Vas66.2 L −30%, better
BL7.7 T·m –
Xmax5.7 mm −13%, worse
Sensitivity89.8 dB +2.1, better
8-inch LF driver · SB23 series · 46 mm voice coil · 60 W
SB Acoustics SB23NACS45-8 8Ω
8 Ω
£89.65
19%RumoH · Ships from Netherlands · All 3 offers
- Fs
- 25Hz
- Xmax
- 6.5mm
- SPL
- 88dB
- Pe
- 60W
- BL
- 7.9T·m
- Vd
- 140cm³
- Qts
- 0.37
- Vas
- 94L
Published graphs
SB Acoustics SB23NACS45-8 is an 8-inch 8 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 25 Hz, Qts 0.37, Vas 94 L, Xmax 6.5 mm, sensitivity 87.7 dB, plus 140 cm³ Vd and 63 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 £89.65.
The published T/S values agree with each other
Thiele/Small
- Fs
- 25Hz
- Qts
- 0.37
- Qes
- 0.40
- Qms
- 5.6
- Vas
- 94L
- Re
- 5.6Ω
- Le
- 0.60mH
Motor and cone
- BL
- 7.9T·m
- Sd
- 216cm²
- Mms
- 29g
- Xmax
- 6.5mm
- Vd †
- 140cm³
- Voice coil
- 46mm
- Flux density
- 0.86T
Power and response
- Sensitivity †
- 87.7dB
- Manufacturer sensitivity
- 87.5dB
- Power
- 60W
- Impedance
- 8Ω
- EBP †
- 63 · Sealed or vented
Size and mounting
- Weight
- 2.7kg
Other published values
- Cms
- 1.42mm/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
- 1.42mm/N
- Mms
- 29g
- Qes
- 0.40
- Qms
- 5.6
- Qts
- 0.37
- SPL
- 87.7dB
- Vas
- 94L
- Xmax
- 6.5mm
- Power
- 60W
- Impedance
- 8Ω
- Flux density
- 0.86T
- Sensitivity
- 87.5dB
- Calculated sensitivity †
- 87.7dB
- Manufacturer sensitivity
- 87.5dB
- Voice coil
- 46mm
- Weight
- 2.7kg
02
Compare
Same-size drivers, compared with the SB23NACS45-8. Clear differences are green when better and red when worse.
This driverSB23NACS45-8
Best price
£89.65
Fs
25 Hz
Qts
0.37
Vas
94 L
BL
7.9 T·m
Xmax
6.5 mm
Sensitivity
87.7 dB
Power
60 W
Beyma8BR40
£54.18 · 40% less, betterFs30 Hz +20%, worse
Qts0.39 +5%
Vas89.1 L −5%
BL6.8 T·m −14%, worse
Xmax6.7 mm +3%
Sensitivity89 dB +1.3
CIAREHWB200
£63.09 · 30% less, betterFs32 Hz +28%, worse
Qts0.39 +5%
Vas59 L −37%, better
BL8.9 T·m +13%, better
Xmax7 mm +8%
Sensitivity88.8 dB +1.1
REDCATT8FR
£66.91 · 25% less, betterFs53 Hz +112%, worse
Qts0.38 –
Vas36.8 L −61%, better
BL7.9 T·m –
Xmax5.8 mm −11%, worse
Sensitivity93.4 dB +5.7, better
SB AcousticsSB23NRXS45-8
£84.41 · 6% less, betterFs27 Hz +8%
Qts0.38 –
Vas94 L –
BL7.5 T·m −5%
Xmax13 mm +100%, better
Sensitivity88.6 dB +0.9
Scanspeak22W/8534G00
£85.75 · 4% lessFs30 Hz +20%, worse
Qts0.39 +5%
Vas94.2 L –
BL7.8 T·m –
Xmax5.8 mm −11%, worse
Sensitivity89.7 dB +2, better
Dayton AudioRS225P-8A
£88.96 · Same priceFs32 Hz +26%, worse
Qts0.34 −8%
Vas68.8 L −27%, better
BL8.5 T·m +8%
Xmax7 mm +8%
Sensitivity88.8 dB +1.1
SB AcousticsSB23NACS45-4
£89.65 · Same priceFs23 Hz −8%
Qts0.33 −11%, better
Vas95 L –
BL6.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity87.2 dB −0.5
Scanspeak22W/4534G00
£92.39 · 3% moreFs30 Hz +20%, worse
Qts0.34 −8%
Vas95 L –
BL6 T·m −24%, worse
Xmax5.7 mm −12%, worse
Sensitivity90.4 dB +2.7, better
SB AcousticsSB23NBACS45-8
£98.70 · 10% more, worseFs25 Hz –
Qts0.40 +8%
Vas93.4 L –
BL7.9 T·m –
Xmax13 mm +100%, better
Sensitivity87.3 dB –
MonacorSPH-220HQ
£105.95 · 18% more, worseFs30 Hz +20%, worse
Qts0.40 +8%
Vas80 L −15%, better
BL7.6 T·m −3%
Xmax5.5 mm −15%, worse
Sensitivity88.7 dB +1
SB AcousticsSB23CACS45-8
£114.02 · 27% more, worseFs25 Hz –
Qts0.40 +8%
Vas87 L −7%
BL7.9 T·m –
Xmax13 mm +100%, better
Sensitivity86.9 dB −0.8
Scanspeak18W/8531G00
£168.81 · 88% more, worseFs28 Hz +12%, worse
Qts0.36 –
Vas58.2 L −38%, better
BL6.8 T·m −14%, worse
Xmax6.5 mm –
Sensitivity87.2 dB −0.5
SEASH1471-08 CA22RNY
£185.62 · 107% more, worseFs34 Hz +36%, worse
Qts0.30 −19%, better
Vas82 L −13%, better
BL8.5 T·m +8%
Xmax6 mm −8%
Sensitivity91.5 dB +3.8, better
ETON8-512/C8/32 HEX
£186.43 · 108% more, worseFs27 Hz +8%
Qts0.40 +8%
Vas102 L +9%
BL7.8 T·m –
Xmax5.5 mm −15%, worse
Sensitivity88.7 dB +1
Dayton AudioPS220-8
£202.58 · 126% more, worseFs46 Hz +86%, worse
Qts0.38 –
Vas90.2 L −4%
BL6.2 T·m −22%, worse
Xmax4.8 mm −26%, worse
Sensitivity95.6 dB +7.9, better
WavecorWF223BD01
£207.92 · 132% more, worseFs33 Hz +30%, worse
Qts0.39 +5%
Vas45 L −52%, better
BL7.7 T·m –
Xmax6.5 mm –
Sensitivity87.9 dB –
SB AcousticsWO24TX-4
£296.58 · 231% more, worseFs26 Hz +5%
Qts0.35 −5%
Vas79 L −16%, better
BL7.9 T·m –
Xmax17.5 mm +169%, better
Sensitivity87.9 dB –
£398.33 · 344% more, worse
Fs25 Hz –
Qts0.34 −8%
Vas98 L +4%
BL8.1 T·m –
Xmax5 mm −23%, worse
Sensitivity87.8 dB –
AccutonS220-6-221
£450.08 · 402% more, worseFs22 Hz −12%, better
Qts0.37 –
Vas112.9 L +20%, worse
BL8.3 T·m +5%
Xmax5 mm −23%, worse
Sensitivity87 dB −0.7
AccutonC220-6-221
£508.52 · 467% more, worseFs26 Hz +5%
Qts0.40 +8%
Vas86.2 L −8%
BL8.7 T·m +10%, better
Xmax5 mm −23%, worse
Sensitivity87.8 dB –
£533.95 · 496% more, worse
Fs25 Hz –
Qts0.39 +5%
Vas93 L –
BL8.3 T·m +5%
Xmax7 mm +8%
Sensitivity87.2 dB −0.5
PurifiPTT8.0X04-NAB-01
£593.28 · 562% more, worseFs26 Hz +4%
Qts0.36 –
Vas70.4 L −25%, better
BL8 T·m –
Xmax9.3 mm +43%, better
Sensitivity87.2 dB −0.5
HiViSS8R
No current priceFs30 Hz +20%, worse
Qts0.35 −5%
Vas92.9 L –
BL6.6 T·m −16%, worse
Xmax6 mm −8%
Sensitivity90 dB +2.3, better
HiViSS8
No current priceFs30 Hz +20%, worse
Qts0.33 −11%, better
Vas83.3 L −11%, better
BL6.8 T·m −14%, worse
Xmax6 mm −8%
Sensitivity89.6 dB +1.9
RS SpeakersW 220.50 FIBONACCI
No current priceFs33 Hz +34%, worse
Qts0.36 –
Vas55.6 L −41%, better
BL8.6 T·m +9%
Xmax6 mm −8%
Sensitivity89.3 dB +1.6
MarkaudioMA200-P MICA
No current priceFs39 Hz +56%, worse
Qts0.37 –
Vas66.5 L −29%, better
BL7.0 T·m −11%, worse
Xmax7 mm +8%
Sensitivity91.5 dB +3.8, better
SB AcousticsMW19PF-8
No current priceFs30 Hz +20%, worse
Qts0.34 −8%
Vas63 L −33%, better
BL7 T·m −11%, worse
Xmax6.5 mm –
Sensitivity88.7 dB +1
HiViS8
No current priceFs30 Hz +20%, worse
Qts0.34 −8%
Vas98.5 L +5%
BL6.3 T·m −20%, worse
Xmax5.8 mm −11%, worse
Sensitivity90.1 dB +2.4, better
WavecorWF223BD02
No current priceFs31 Hz +24%, worse
Qts0.37 –
Vas49.5 L −47%, better
BL9.5 T·m +20%, better
Xmax6.5 mm –
Sensitivity87.9 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 51 rating · 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 | £89.65, the lowest price | Stock not listed | Visit shop at RumoH | |
SoundImports Import VAT and duty may apply | £110.15 | 23% above the lowest price | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr