SB AcousticsSB20PFCR30-4
£31.27 · 90% less, betterFs34 Hz −19%, better
Qts0.33 +22%, worse
Vas66.2 L −30%, better
BL6.6 T·m −7%
Xmax5.8 mm +92%, better
Sensitivity90.5 dB −4.4, worse
8-inch LF driver · 30 W
Tang Band W8-1772 8Ω
8 Ω
£310.10
6.0%SoundImports · 20 in stock · Ships from Netherlands · All 3 offers
- Fs
- 42Hz
- Xmax
- 3mm
- SPL
- 95dB
- Pe
- 30W
- BL
- 7.1T·m
- Vd
- 66cm³
- Qts
- 0.27
- Vas
- 94L
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 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
spl
Frequency response
240 plotted pointsMedium confidence1,230 selected pixels of 2,602 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence2,200 selected pixels of 2,200
Tang Band W8-1772 is an 8-inch 8 ohm LF driver rated at 30 W RMS. The validated T/S data includes Fs 42 Hz, Qts 0.27, Vas 94.5 L, Xmax 3 mm, sensitivity 94.9 dB, plus 66 cm³ Vd and 117 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 £301.76.
The published T/S values agree with each other
Thiele/Small
- Fs
- 42Hz
- Qts
- 0.27
- Qes
- 0.36
- Qms
- 1.0
- Vas
- 94.5L
- Re
- 6.8Ω
- Le
- 0.009mH
Motor and cone
- BL
- 7.1T·m
- Sd
- 220cm²
- Mms
- 10g
- Xmax
- 3mm
- Vd †
- 66cm³
Power and response
- Sensitivity †
- 94.9dB
- Manufacturer sensitivity
- 95dB
- Power
- 30W
- Impedance
- 8Ω
- EBP †
- 117 · Leans vented
Other published values
- Power Peak
- 60
† Calculated by bits from the published values
What this validation status means
Everything else Tang Band lists
LF · Primary · 8″
- BL
- 7.1T·m
- Fs
- 42Hz
- Le
- 0.009mH
- Re
- 6.8Ω
- Sd
- 220cm²
- Mms
- 10g
- Qes
- 0.36
- Qms
- 1.0
- Qts
- 0.27
- SPL
- 94.9dB
- Vas
- 94.5L
- Xmax
- 3mm
- Power
- 30W
- Impedance
- 8Ω
- Power Peak
- 60
- Sensitivity
- 95dB
- Calculated sensitivity †
- 94.9dB
- Manufacturer sensitivity
- 95dB
02
Compare
Same-size drivers, compared with the W8-1772. Clear differences are green when better and red when worse.
This driverW8-1772
Best price
£301.76
Fs
42 Hz
Qts
0.27
Vas
94.5 L
BL
7.1 T·m
Xmax
3 mm
Sensitivity
94.9 dB
Power
30 W
SB AcousticsSB20PFC30-4
£35.21 · 88% less, betterFs34 Hz −20%, better
Qts0.33 +22%, worse
Vas66.2 L −30%, better
BL6.6 T·m −7%
Xmax5.8 mm +92%, better
Sensitivity90.4 dB −4.5, worse
SB AcousticsSB23NRXS45-4
£84.41 · 72% less, betterFs27 Hz −36%, better
Qts0.30 +11%, worse
Vas87.5 L −7%
BL6.9 T·m −3%
Xmax6.5 mm +117%, better
Sensitivity89.3 dB −5.6, worse
SB AcousticsSB23NRXS45-8
£84.41 · 72% less, betterFs27 Hz −36%, better
Qts0.38 +41%, worse
Vas94 L –
BL7.5 T·m +5%
Xmax6.5 mm +117%, better
Sensitivity88.6 dB −6.3, worse
Scanspeak22W/8534G00
£85.75 · 72% less, betterFs30 Hz −29%, better
Qts0.39 +44%, worse
Vas94.2 L –
BL7.8 T·m +10%
Xmax5.8 mm +93%, better
Sensitivity89.7 dB −5.2, worse
SB AcousticsSB23NACS45-4
£88.66 · 71% less, betterFs23 Hz −45%, better
Qts0.33 +22%, worse
Vas95 L –
BL6.7 T·m −6%
Xmax6.5 mm +117%, better
Sensitivity87.2 dB −7.7, worse
SB AcousticsSB23NACS45-8
£88.66 · 71% less, betterFs25 Hz −40%, better
Qts0.37 +37%, worse
Vas94 L –
BL7.9 T·m +11%, better
Xmax6.5 mm +117%, better
Sensitivity87.7 dB −7.2, worse
Scanspeak22W/4534G00
£91.37 · 70% less, betterFs30 Hz −29%, better
Qts0.34 +26%, worse
Vas95 L –
BL6 T·m −16%, worse
Xmax5.7 mm +90%, better
Sensitivity90.4 dB −4.5, worse
SB AcousticsSB23NBACS45-4
£98.70 · 67% less, betterFs23 Hz −45%, better
Qts0.33 +22%, worse
Vas95 L –
BL6.7 T·m −6%
Xmax6.5 mm +117%, better
Sensitivity87.2 dB −7.7, worse
SB AcousticsSB23CACS45-4
£111.40 · 63% less, betterFs23 Hz −45%, better
Qts0.33 +22%, worse
Vas95 L –
BL6.7 T·m −6%
Xmax6.5 mm +117%, better
Sensitivity87.2 dB −7.7, worse
Eighteen Sound8M400F
£114.19 · 62% less, betterFs89 Hz +112%, worse
Qts0.26 −4%
Vas13.7 L −85%, better
BL13.1 T·m +84%, better
Xmax3 mm –
Sensitivity97.4 dB +2.5, better
Tang BandW8-2145
£150.84 · 50% less, betterFs40 Hz −5%
Qts0.45 +67%, worse
Vas67.7 L −28%, better
BL6.6 T·m −7%
Xmax3 mm –
Sensitivity90.5 dB −4.4, worse
£156.48 · 48% less, better
Fs29 Hz −31%, better
Qts0.29 +7%
Vas103 L +9%
BL8 T·m +12%, better
Xmax4 mm +33%, better
Sensitivity90.7 dB −4.2, worse
SB AcousticsMW19P-8
£167.60 · 44% less, betterFs30 Hz −30%, better
Qts0.29 +7%
Vas61 L −35%, better
BL7.7 T·m +8%
Xmax6.7 mm +123%, better
Sensitivity88.9 dB −6, worse
SB AcousticsMW19PNW-8
£171.00 · 43% less, betterFs30 Hz −30%, better
Qts0.29 +7%
Vas61 L −35%, better
BL7.7 T·m +8%
Xmax6.7 mm +123%, better
Sensitivity88.9 dB −6, worse
SEASH1471-08 CA22RNY
£171.54 · 43% less, betterFs34 Hz −19%, better
Qts0.30 +11%, worse
Vas82 L −13%, better
BL8.5 T·m +19%, better
Xmax6 mm +100%, better
Sensitivity91.5 dB −3.4, worse
SEASH1597-08 FA22RCZ
£197.94 · 34% less, betterFs30 Hz −29%, better
Qts0.35 +30%, worse
Vas134 L +42%, worse
BL6.4 T·m −10%, worse
Xmax3 mm –
Sensitivity91.8 dB −3.1, worse
Dayton AudioPS220-8
£200.34 · 34% less, betterFs46 Hz +10%, worse
Qts0.38 +41%, worse
Vas90.2 L −4%
BL6.2 T·m −14%, worse
Xmax4.8 mm +60%, better
Sensitivity95.6 dB +0.7
SB AcousticsMW19TX-4
£284.16 · 6% less, betterFs32 Hz −24%, better
Qts0.27 –
Vas53.2 L −44%, better
BL6.3 T·m −12%, worse
Xmax6.8 mm +127%, better
Sensitivity90 dB −4.9, worse
SB AcousticsWO24TX-4
£293.29 · 3% lessFs26 Hz −37%, better
Qts0.35 +30%, worse
Vas79 L −16%, better
BL7.9 T·m +11%, better
Xmax8.8 mm +192%, better
Sensitivity87.9 dB −7, worse
£310.10 · 3% more
Fs33 Hz −21%, better
Qts0.30 +11%, worse
Vas72 L −24%, better
BL8.8 T·m +24%, better
Xmax7 mm +133%, better
Sensitivity90.6 dB −4.3, worse
Scanspeak21WE/4542T00
£670.54 · 122% more, worseFs38 Hz −10%
Qts0.28 +4%
Vas54 L −43%, better
BL8.2 T·m +15%, better
Xmax7.2 mm +140%, better
Sensitivity92 dB −2.9, worse
HiViSS8
No current priceFs30 Hz −29%, better
Qts0.33 +22%, worse
Vas83.3 L −12%, better
BL6.8 T·m −4%
Xmax6 mm +100%, better
Sensitivity89.6 dB −5.3, worse
HiViSS8R
No current priceFs30 Hz −29%, better
Qts0.35 +30%, worse
Vas92.9 L –
BL6.6 T·m −7%
Xmax6 mm +100%, better
Sensitivity90 dB −4.9, worse
SB AcousticsMW19PF-4
No current priceFs29 Hz −31%, better
Qts0.27 –
Vas62.7 L −34%, better
BL6.1 T·m −14%, worse
Xmax6.5 mm +117%, better
Sensitivity89.4 dB −5.5, worse
Cube AudioF8 MAGUS
No current priceFs40 Hz −5%
Qts0.37 +37%, worse
Vas53 L −44%, better
BL9 T·m +26%, better
Xmax3 mm –
Sensitivity91.7 dB −3.2, worse
Audio Technology18 H 52 17 06 SD
No current priceFs36 Hz −14%, better
Qts0.28 +4%
Vas34 L −64%, better
BL6.6 T·m −7%
Xmax6.3 mm +110%, better
Sensitivity88.8 dB −6.1, worse
SB AcousticsMW19PF-8
No current priceFs30 Hz −29%, better
Qts0.34 +26%, worse
Vas63 L −33%, better
BL7 T·m –
Xmax6.5 mm +117%, better
Sensitivity88.7 dB −6.2, worse
HiViSS8IIN
No current priceFs29 Hz −31%, better
Qts0.27 –
Vas80.1 L −15%, better
BL10.6 T·m +49%, better
Xmax5 mm +67%, better
Sensitivity90.3 dB −4.6, worse
HiViS8
No current priceFs30 Hz −29%, better
Qts0.34 +26%, worse
Vas98.5 L +4%
BL6.3 T·m −12%, worse
Xmax5.8 mm +93%, better
Sensitivity90.1 dB −4.8, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.8 out of 56 ratings · Checked 22 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 | £310.10, the lowest price | 20 in stock | Visit shop at SoundImports | |
Audiophonics Import VAT and duty may apply | £292.54 | Available on order | Visit shop at Audiophonics |
Best price over time
Tracked since 1 Apr