VisatonW 200
£27.59Fs46 Hz +18%, worse
Qts0.63 −5%
Vas51 L −14%, better
BL5.9 T·m +5%
Xmax2 mm −64%, worse
Sensitivity90 dB +1.4
8-inch LF driver · SB20 series · 31 mm voice coil · 40 W
SB Acoustics SB20PFCS30-7 7Ω
7 Ω
No price for delivery to the UK
- Fs
- 39Hz
- Xmax
- 5.5mm
- SPL
- 89dB
- Pe
- 40W
- BL
- 5.6T·m
- Vd
- 122cm³
- Qts
- 0.66
- Vas
- 60L
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 confidence1,533 selected pixels of 3,407 - Trace datasheet-response-trace-poc/v1
60 degrees
Frequency response
222 plotted pointsMedium confidence849 selected pixels of 2,757 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence1,731 selected pixels of 4,848
Published graphs
SB Acoustics SB20PFCS30-7 is an 8-inch 7 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 39 Hz, Qts 0.66, Vas 59.5 L, Xmax 5.5 mm, sensitivity 88.6 dB, plus 122 cm³ Vd and 51 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 39Hz
- Qts
- 0.66
- Qes
- 0.77
- Qms
- 4.5
- Vas
- 59.5L
- Re
- 5Ω
- Le
- 0.95mH
Motor and cone
- BL
- 5.6T·m
- Sd
- 222cm²
- Mms
- 20g
- Xmax
- 5.5mm
- Vd †
- 122cm³
- Voice coil
- 31mm
- Flux density
- 0.91T
Power and response
- Sensitivity †
- 88.6dB
- Manufacturer sensitivity
- 88dB
- Power
- 40W
- Impedance
- 7Ω
- EBP †
- 51 · Sealed or vented
Size and mounting
- Weight
- 1.0kg
Other published values
- Cms
- 0.85mm/N
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 8″
- BL
- 5.6T·m
- Fs
- 39Hz
- Le
- 0.95mH
- Re
- 5Ω
- Sd
- 222cm²
- Cms
- 0.85mm/N
- Mms
- 20g
- Qes
- 0.77
- Qms
- 4.5
- Qts
- 0.66
- SPL
- 88.6dB
- Vas
- 59.5L
- Xmax
- 5.5mm
- Power
- 40W
- Impedance
- 7Ω
- Flux density
- 0.91T
- Sensitivity
- 88dB
- Calculated sensitivity †
- 88.6dB
- Manufacturer sensitivity
- 88dB
- Voice coil
- 31mm
- Weight
- 1.0kg
02
Compare
Same-size drivers, compared with the SB20PFCS30-7. Clear differences are green when better and red when worse.
This driverSB20PFCS30-7
Best price
–
Fs
39 Hz
Qts
0.66
Vas
59.5 L
BL
5.6 T·m
Xmax
5.5 mm
Sensitivity
88.6 dB
Power
40 W
SB AcousticsSB20PFCR30-4
£31.27Fs34 Hz −13%, better
Qts0.33 −50%, better
Vas66.2 L +11%, worse
BL6.6 T·m +18%, better
Xmax5.8 mm +5%
Sensitivity90.5 dB +1.9
FaitalPRO8FE200
£33.72Fs80 Hz +105%, worse
Qts0.63 −5%
Vas16.1 L −73%, better
BL8.2 T·m +46%, better
Xmax4.7 mm −15%, worse
Sensitivity93 dB +4.4, better
SB AcousticsSB20PFC30-4
£35.17Fs34 Hz −14%, better
Qts0.33 −50%, better
Vas66.2 L +11%, worse
BL6.6 T·m +18%, better
Xmax5.8 mm +5%
Sensitivity90.4 dB +1.8
CIAREHW210
£36.00Fs41 Hz +5%
Qts0.84 +27%, worse
Vas57.6 L −3%
BL5.2 T·m −8%
Xmax5.3 mm −4%
Sensitivity87.8 dB −0.8
MonacorSPM-205/8
£38.40Fs37 Hz −5%
Qts0.70 +6%
Vas54 L −9%
BL6.5 T·m +16%, better
Xmax3 mm −45%, worse
Sensitivity86.8 dB −1.8
MonacorSP-202E
£41.78Fs51 Hz +31%, worse
Qts0.69 +5%
Vas39 L −34%, better
BL4.9 T·m −13%, worse
Xmax2.5 mm −55%, worse
Sensitivity90.1 dB +1.5
MonacorSPX-200WP
£41.87Fs36 Hz −8%
Qts0.59 −11%, better
Vas60.5 L –
BL6.8 T·m +21%, better
Xmax2 mm −64%, worse
Sensitivity88.1 dB −0.5
REDCATT82FHM
£49.82Fs42 Hz +8%
Qts0.61 −8%
Vas33.6 L −44%, better
BL7.6 T·m +35%, better
Xmax5.5 mm –
Sensitivity87.2 dB −1.4
Dayton AudioRS225-4
£67.31Fs33 Hz −15%, better
Qts0.41 −38%, better
Vas46.4 L −22%, better
BL6.4 T·m +14%, better
Xmax6 mm +9%
Sensitivity87.1 dB −1.5
Dayton AudioRS225P-4A
£67.31Fs38 Hz −3%
Qts0.38 −42%, better
Vas45.8 L −23%, better
BL6.4 T·m +14%, better
Xmax6 mm +9%
Sensitivity89.1 dB +0.5
Scanspeak18W/8535-01
£145.25Fs25 Hz −36%, better
Qts0.38 −42%, better
Vas68.9 L +16%, worse
BL5.9 T·m +5%
Xmax5 mm −9%
Sensitivity85.7 dB −2.9, worse
Scanspeak18W/4531G01
£168.82Fs34 Hz −13%, better
Qts0.35 −47%, better
Vas45.6 L −23%, better
BL5.7 T·m –
Xmax6.5 mm +18%, better
Sensitivity88.8 dB –
Scanspeak18M/4631T00
£192.54Fs65 Hz +67%, worse
Qts0.60 −9%
Vas14 L −76%, better
BL5.6 T·m –
Xmax3 mm −45%, worse
Sensitivity89.6 dB +1
Scanspeak18M/8631T00
£192.54Fs65 Hz +67%, worse
Qts0.71 +8%
Vas14 L −76%, better
BL6.5 T·m +16%, better
Xmax3 mm −45%, worse
Sensitivity88.7 dB –
Tang BandW8-2314
£293.02Fs38 Hz –
Qts0.46 −30%, better
Vas49.5 L −17%, better
BL6.1 T·m +9%
Xmax6 mm +9%
Sensitivity89 dB –
Tang BandW8-1808
£358.37Fs45 Hz +15%, worse
Qts0.44 −33%, better
Vas88.1 L +48%, worse
BL5.3 T·m −6%
Xmax5 mm −9%
Sensitivity92.9 dB +4.3, better
FaitalPRO8FE300
No current priceFs70 Hz +79%, worse
Qts0.66 –
Vas14.4 L −76%, better
BL13.6 T·m +143%, better
Xmax5.5 mm –
Sensitivity90.5 dB +1.9
Tang BandW8-2282
No current priceFs35 Hz −10%, better
Qts0.66 –
Vas12.9 L −78%, better
BL10.8 T·m +92%, better
Xmax5 mm −9%
Sensitivity80.7 dB −7.9, worse
Lii AudioCRYSTAL 8
No current priceFs38 Hz −4%
Qts0.63 −5%
Vas120 L +102%, worse
BL3.3 T·m −41%, worse
Xmax6 mm +9%
Sensitivity91.3 dB +2.7, better
MonacorSP-200X
No current priceFs50 Hz +28%, worse
Qts0.52 −21%, better
Vas48 L −19%, better
BL6.1 T·m +9%
Xmax1.6 mm −71%, worse
Sensitivity91.4 dB +2.8, better
HiViS8-98
No current priceFs34 Hz −13%, better
Qts0.44 −33%, better
Vas64.9 L +9%
BL6.6 T·m +18%, better
Xmax5.8 mm +5%
Sensitivity88.9 dB –
PRV Audio8MR450CF-4
No current priceFs83 Hz +112%, worse
Qts0.71 +8%
Vas17.5 L −71%, better
BL6.1 T·m +8%
Xmax3.5 mm −36%, worse
Sensitivity93.4 dB +4.8, better
CIARECW200Z
No current priceFs49 Hz +26%, worse
Qts0.53 −20%, better
Vas38.3 L −36%, better
BL5.2 T·m −8%
Xmax4 mm −27%, worse
Sensitivity90.1 dB +1.5
HiViD8.4MKII
No current priceFs36 Hz −8%
Qts0.56 −15%, better
Vas40 L −33%, better
BL7.1 T·m +27%, better
Xmax5 mm −9%
Sensitivity86.9 dB −1.7
MonacorSPM-205/4
No current priceFs37 Hz −5%
Qts0.55 −17%, better
Vas72 L +21%, worse
BL4.8 T·m −15%, worse
Xmax3 mm −45%, worse
Sensitivity89.3 dB +0.7
PRV Audio8MR400B-4
No current priceFs93 Hz +138%, worse
Qts0.74 +12%, worse
Vas15.7 L −74%, better
BL6.3 T·m +13%, better
Xmax3.3 mm −41%, worse
Sensitivity94.2 dB +5.6, better
SB AcousticsMW19PF-4
No current priceFs29 Hz −26%, better
Qts0.27 −59%, better
Vas62.7 L +5%
BL6.1 T·m +9%
Xmax6.5 mm +18%, better
Sensitivity89.4 dB +0.8
PRV Audio69MR500-PHP-4
No current priceFs92 Hz +135%, worse
Qts0.65 –
Vas15.2 L −75%, better
BL6.8 T·m +21%, better
Xmax2.9 mm −48%, worse
Sensitivity94.4 dB +5.8, better
HiViD8.8MKII
No current priceFs39 Hz –
Qts0.57 −14%, better
Vas38.1 L −36%, better
BL9.6 T·m +71%, better
Xmax5 mm −9%
Sensitivity87.7 dB −0.9
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports3.0 out of 51 rating · 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 |
|---|---|---|---|---|
Lean Audio | £31.91 | Back order | Visit shop at Lean Audio | |
SoundImports Import VAT and duty may apply | £35.96 | Back order | Visit shop at SoundImports |