SB AcousticsSB20PFCR30-4
£31.27 · 65% less, betterFs34 Hz +48%, worse
Qts0.33 –
Vas66.2 L −30%, better
BL6.6 T·m –
Xmax11.5 mm +77%, better
Sensitivity90.5 dB +3.3, better
8-inch LF driver · SB23 series · 46 mm voice coil · 60 W
SB Acoustics SB23NACS45-4 4Ω
4 Ω
£89.65
19%RumoH · Ships from Netherlands · All 2 offers
- Fs
- 23Hz
- Xmax
- 6.5mm
- SPL
- 87dB
- Pe
- 60W
- BL
- 6.7T·m
- Vd
- 140cm³
- Qts
- 0.33
- Vas
- 95L
Published graphs
SB Acoustics SB23NACS45-4 is an 8-inch 4 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 23 Hz, Qts 0.33, Vas 95 L, Xmax 6.5 mm, sensitivity 87.2 dB, plus 140 cm³ Vd and 66 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
- 23Hz
- Qts
- 0.33
- Qes
- 0.35
- Qms
- 5.4
- Vas
- 95L
- Re
- 3.3Ω
- Le
- 0.27mH
Motor and cone
- BL
- 6.7T·m
- Sd
- 216cm²
- Mms
- 32g
- Xmax
- 6.5mm
- Vd †
- 140cm³
- Voice coil
- 46mm
- Flux density
- 0.86T
Power and response
- Sensitivity †
- 87.2dB
- Manufacturer sensitivity
- 90dB
- Power
- 60W
- Impedance
- 4Ω
- EBP †
- 66 · Sealed or vented
Size and mounting
- Weight
- 2.7kg
Other published values
- Cms
- 1.45mm/N
Sensitivity shows 87.2 dB, calculated from the T/S values. SB Acoustics publishes 90.0 dB, 2.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 8″
- BL
- 6.7T·m
- Fs
- 23Hz
- Le
- 0.27mH
- Re
- 3.3Ω
- Sd
- 216cm²
- Cms
- 1.45mm/N
- Mms
- 32g
- Qes
- 0.35
- Qms
- 5.4
- Qts
- 0.33
- SPL
- 87.2dB
- Vas
- 95L
- Xmax
- 6.5mm
- Power
- 60W
- Impedance
- 4Ω
- Flux density
- 0.86T
- Sensitivity
- 90dB
- Calculated sensitivity †
- 87.2dB
- Manufacturer sensitivity
- 90dB
- Voice coil
- 46mm
- Weight
- 2.7kg
02
Compare
Same-size drivers, compared with the SB23NACS45-4. Clear differences are green when better and red when worse.
This driverSB23NACS45-4
Best price
£89.65
Fs
23 Hz
Qts
0.33
Vas
95 L
BL
6.7 T·m
Xmax
6.5 mm
Sensitivity
87.2 dB
Power
60 W
SB AcousticsSB20PFC30-4
£35.60 · 60% less, betterFs34 Hz +47%, worse
Qts0.33 –
Vas66.2 L −30%, better
BL6.6 T·m –
Xmax5.8 mm −12%, worse
Sensitivity90.4 dB +3.2, better
Beyma8BR40
£54.18 · 40% less, betterFs30 Hz +30%, worse
Qts0.39 +18%, worse
Vas89.1 L −6%
BL6.8 T·m –
Xmax6.7 mm +3%
Sensitivity89 dB +1.8
CIAREHWB200
£72.89 · 19% less, betterFs32 Hz +39%, worse
Qts0.38 +15%, worse
Vas57 L −40%, better
BL7.3 T·m +9%
Xmax7 mm +8%
Sensitivity88.8 dB +1.6
SB AcousticsSB23NRXS45-4
£84.41 · 6% less, betterFs27 Hz +17%, worse
Qts0.30 −9%
Vas87.5 L −8%
BL6.9 T·m –
Xmax13 mm +100%, better
Sensitivity89.3 dB +2.1, better
SB AcousticsSB23NACS45-8
£89.65 · Same priceFs25 Hz +9%
Qts0.37 +12%, worse
Vas94 L –
BL7.9 T·m +18%, better
Xmax6.5 mm –
Sensitivity87.7 dB +0.5
Scanspeak22W/4534G00
£92.39 · 3% moreFs30 Hz +30%, worse
Qts0.34 +3%
Vas95 L –
BL6 T·m −10%, worse
Xmax5.7 mm −12%, worse
Sensitivity90.4 dB +3.2, better
SB AcousticsSB23NBACS45-4
£98.70 · 10% more, worseFs23 Hz –
Qts0.33 –
Vas95 L –
BL6.7 T·m –
Xmax13 mm +100%, better
Sensitivity87.2 dB –
SB AcousticsSB23CACS45-4
£112.65 · 26% more, worseFs23 Hz –
Qts0.33 –
Vas95 L –
BL6.7 T·m –
Xmax13 mm +100%, better
Sensitivity87.2 dB –
Eighteen Sound8NMB420
£121.21 · 35% more, worseFs59 Hz +157%, worse
Qts0.31 −6%
Vas31 L −67%, better
BL7 T·m +4%
Xmax5.8 mm −11%, worse
Sensitivity94.8 dB +7.6, better
WavecorWF182BD17
£123.30 · 38% more, worseFs33 Hz +43%, worse
Qts0.35 +6%
Vas24.3 L −74%, better
BL6.5 T·m –
Xmax5.5 mm −15%, worse
Sensitivity85.8 dB −1.4
Scanspeak18W/8542-10
£157.04 · 75% more, worseFs43 Hz +87%, worse
Qts0.35 +6%
Vas26 L −73%, better
BL6.9 T·m –
Xmax6.5 mm –
Sensitivity88.7 dB +1.5
Scanspeak18W/8531G00
£168.81 · 88% more, worseFs28 Hz +22%, worse
Qts0.36 +9%
Vas58.2 L −39%, better
BL6.8 T·m –
Xmax6.5 mm –
Sensitivity87.2 dB –
Scanspeak18W/4531G01
£168.82 · 88% more, worseFs34 Hz +48%, worse
Qts0.35 +6%
Vas45.6 L −52%, better
BL5.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity88.8 dB +1.6
Scanspeak18W/4531G00
£182.19 · 103% more, worseFs33 Hz +43%, worse
Qts0.35 +6%
Vas41.9 L −56%, better
BL5.7 T·m −15%, worse
Xmax6.5 mm –
Sensitivity88 dB +0.8
SEASH1471-08 CA22RNY
£185.62 · 107% more, worseFs34 Hz +48%, worse
Qts0.30 −9%
Vas82 L −14%, better
BL8.5 T·m +27%, better
Xmax6 mm −8%
Sensitivity91.5 dB +4.3, better
Scanspeak21W/8555-10
£220.33 · 146% more, worseFs20 Hz −13%, better
Qts0.31 −6%
Vas134 L +41%, worse
BL8.2 T·m +22%, better
Xmax6.5 mm –
Sensitivity87.1 dB –
Tang BandW8-1772
£305.14 · 240% more, worseFs42 Hz +83%, worse
Qts0.27 −18%, better
Vas94.5 L –
BL7.1 T·m +6%
Xmax3 mm −54%, worse
Sensitivity94.9 dB +7.7, better
£313.57 · 250% more, worse
Fs33 Hz +43%, worse
Qts0.30 −9%
Vas72 L −24%, better
BL8.8 T·m +31%, better
Xmax7 mm +8%
Sensitivity90.6 dB +3.4, better
£398.33 · 344% more, worse
Fs25 Hz +9%
Qts0.34 +3%
Vas98 L +3%
BL8.1 T·m +21%, better
Xmax5 mm −23%, worse
Sensitivity87.8 dB +0.6
HiViSS8
No current priceFs30 Hz +30%, worse
Qts0.33 –
Vas83.3 L −12%, better
BL6.8 T·m –
Xmax6 mm −8%
Sensitivity89.6 dB +2.4, better
HiViSS8R
No current priceFs30 Hz +30%, worse
Qts0.35 +6%
Vas92.9 L –
BL6.6 T·m –
Xmax6 mm −8%
Sensitivity90 dB +2.8, better
SB AcousticsMW19PF-8
No current priceFs30 Hz +30%, worse
Qts0.34 +3%
Vas63 L −34%, better
BL7 T·m +4%
Xmax6.5 mm –
Sensitivity88.7 dB +1.5
HiViS8
No current priceFs30 Hz +30%, worse
Qts0.34 +3%
Vas98.5 L +4%
BL6.3 T·m −6%
Xmax5.8 mm −11%, worse
Sensitivity90.1 dB +2.9, better
Audio Technology18 H 52 17 06 SD
No current priceFs36 Hz +57%, worse
Qts0.28 −15%, better
Vas34 L −64%, better
BL6.6 T·m –
Xmax6.3 mm −3%
Sensitivity88.8 dB +1.6
HiViSS8II
No current priceFs32 Hz +39%, worse
Qts0.32 −3%
Vas61.6 L −35%, better
BL8.5 T·m +27%, better
Xmax5.8 mm −11%, worse
Sensitivity89.8 dB +2.6, better
WavecorWF182BD09
No current priceFs33 Hz +43%, worse
Qts0.35 +6%
Vas24.3 L −74%, better
BL6.5 T·m –
Xmax5.5 mm −15%, worse
Sensitivity85.8 dB −1.4
SB AcousticsMW19PF-4
No current priceFs29 Hz +26%, worse
Qts0.27 −18%, better
Vas62.7 L −34%, better
BL6.1 T·m −9%
Xmax6.5 mm –
Sensitivity89.4 dB +2.2, better
WavecorWF182BD10
No current priceFs29 Hz +24%, worse
Qts0.31 −6%
Vas32.4 L −66%, better
BL6.5 T·m –
Xmax5.5 mm −15%, worse
Sensitivity85.7 dB −1.5
WavecorWF182BD18
No current priceFs29 Hz +24%, worse
Qts0.31 −6%
Vas32.4 L −66%, better
BL6.5 T·m –
Xmax5.5 mm −15%, worse
Sensitivity85.7 dB −1.5
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 |
|---|---|---|---|---|
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