SB AcousticsSB20PFCR30-4
£31.27Fs34 Hz +26%, worse
Qts0.33 –
Vas66.2 L −6%
BL6.6 T·m −55%, worse
Xmax5.8 mm −52%, worse
Sensitivity90.5 dB +2.6, better
- Fs
- 27Hz
- Xmax
- 12mm
- SPL
- 88dB
- Pe
- 250W
- BL
- 14.6T·m
- Vd
- 552cm³
- Qts
- 0.34
- Vas
- 70L
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
220 plotted pointsMedium confidence497 selected pixels of 1,408 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence2,667 selected pixels of 2,776
Tang Band W8Q-1071F is an 8-inch 4 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 27 Hz, Qts 0.34, Vas 70.4 L, Xmax 12 mm, sensitivity 87.9 dB, plus 552 cm³ Vd and 75 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
- 27Hz
- Qts
- 0.34
- Qes
- 0.36
- Qms
- 4.6
- Vas
- 70.4L
- Re
- 3.2Ω
- Le
- 0.85mH
Motor and cone
- BL
- 14.6T·m
- Sd
- 460cm²
- Mms
- 135g
- Xmax
- 12mm
- Vd †
- 552cm³
Power and response
- Sensitivity †
- 87.9dB
- Manufacturer sensitivity
- 88dB
- Power
- 250W
- Impedance
- 4Ω
- EBP †
- 75 · Sealed or vented
Other published values
- Power Peak
- 500
† Calculated by bits from the published values
What this validation status means
Everything else Tang Band lists
LF · Primary · 8″
- BL
- 14.6T·m
- Fs
- 27Hz
- Le
- 0.85mH
- Re
- 3.2Ω
- Sd
- 460cm²
- Mms
- 135g
- Qes
- 0.36
- Qms
- 4.6
- Qts
- 0.34
- SPL
- 87.9dB
- Vas
- 70.4L
- Xmax
- 12mm
- Power
- 250W
- Impedance
- 4Ω
- Power Peak
- 500
- Sensitivity
- 88dB
- Calculated sensitivity †
- 87.9dB
- Manufacturer sensitivity
- 88dB
02
Compare
Same-size drivers, compared with the W8Q-1071F. Clear differences are green when better and red when worse.
This driverW8Q-1071F
Best price
–
Fs
27 Hz
Qts
0.34
Vas
70.4 L
BL
14.6 T·m
Xmax
12 mm
Sensitivity
87.9 dB
Power
250 W
SB AcousticsSB20PFC30-4
£35.17Fs34 Hz +25%, worse
Qts0.33 –
Vas66.2 L −6%
BL6.6 T·m −55%, worse
Xmax5.8 mm −52%, worse
Sensitivity90.4 dB +2.5, better
VisatonW 200 S
£50.23Fs29 Hz +7%
Qts0.35 –
Vas65 L −8%
BL7.7 T·m −47%, worse
Xmax3.5 mm −71%, worse
Sensitivity88.2 dB –
B&C8PS21
£91.27Fs73 Hz +170%, worse
Qts0.33 –
Vas14 L −80%, better
BL12.6 T·m −14%, worse
Xmax5 mm −58%, worse
Sensitivity93.8 dB +5.9, better
CIARENDI8
£103.24Fs81 Hz +200%, worse
Qts0.33 –
Vas13 L −82%, better
BL12.8 T·m −12%, worse
Xmax4.5 mm −63%, worse
Sensitivity94.9 dB +7, better
SB AcousticsSB23MFCL45-4
£117.27Fs27 Hz –
Qts0.34 –
Vas37 L −47%, better
BL9.6 T·m −34%, worse
Xmax12 mm –
Sensitivity85.1 dB −2.8, worse
LavoceWAN082.01
£127.02Fs85 Hz +215%, worse
Qts0.32 −6%
Vas9 L −87%, better
BL14.4 T·m –
Xmax5.8 mm −52%, worse
Sensitivity94 dB +6.1, better
VisatonGF 200
£132.67Fs30 Hz +11%, worse
Qts0.34 –
Vas68 L −3%
BL9.2 T·m −37%, worse
Xmax6 mm −50%, worse
Sensitivity89 dB +1.1
VisatonAL 200
£150.67Fs32 Hz +19%, worse
Qts0.35 –
Vas77 L +9%
BL8.8 T·m −40%, worse
Xmax7 mm −42%, worse
Sensitivity90.1 dB +2.2, better
MarkaudioMA200-M MULTI
£156.00Fs33 Hz +22%, worse
Qts0.35 –
Vas65.2 L −7%
BL8.5 T·m −41%, worse
Xmax9 mm −25%, worse
Sensitivity89.6 dB +1.7
FaitalPRO8RS340
£163.28Fs42 Hz +56%, worse
Qts0.34 –
Vas25.5 L −64%, better
BL13 T·m −11%, worse
Xmax7.3 mm −39%, worse
Sensitivity89.2 dB +1.3
Beyma8NMFW
£228.68Fs37 Hz +37%, worse
Qts0.34 –
Vas27 L −62%, better
BL13.4 T·m −8%
Xmax9 mm −25%, worse
Sensitivity87.8 dB –
SB AcousticsWO24TX-8
£292.97Fs25 Hz −9%
Qts0.34 –
Vas88 L +25%, worse
BL10.4 T·m −28%, worse
Xmax8.6 mm −29%, worse
Sensitivity87.6 dB –
SB AcousticsWO24TX-4
£292.97Fs26 Hz –
Qts0.35 –
Vas79 L +12%, worse
BL7.9 T·m −46%, worse
Xmax8.8 mm −27%, worse
Sensitivity87.9 dB –
£309.76
Fs33 Hz +22%, worse
Qts0.30 −12%, better
Vas72 L –
BL8.8 T·m −40%, worse
Xmax7 mm −42%, worse
Sensitivity90.6 dB +2.7, better
PurifiPTT8.0X04-NAB-01
£586.08Fs26 Hz −4%
Qts0.36 +6%
Vas70.4 L –
BL8 T·m −45%, worse
Xmax9.3 mm −22%, worse
Sensitivity87.2 dB −0.7
Tang BandW8-740M
No current priceFs30 Hz +11%, worse
Qts0.34 –
Vas14.7 L −79%, better
BL14.3 T·m –
Xmax12 mm –
Sensitivity82.3 dB −5.6, worse
Tang BandW8-1363SB
No current priceFs30 Hz +11%, worse
Qts0.32 −6%
Vas15.4 L −78%, better
BL13.9 T·m −4%
Xmax12 mm –
Sensitivity82.8 dB −5.1, worse
PurifiPTT8.0X08-NAB-01
No current priceFs24 Hz −11%, better
Qts0.35 –
Vas74.5 L +6%
BL10.7 T·m −27%, worse
Xmax9.3 mm −22%, worse
Sensitivity86.5 dB −1.4
KartesianWOM185_VKI
No current priceFs32 Hz +19%, worse
Qts0.32 −6%
Vas33.6 L −52%, better
BL10.2 T·m −30%, worse
Xmax12 mm –
Sensitivity87.3 dB −0.6
No photo
PHL Audio2520
No current priceFs109 Hz +304%, worse
Qts0.33 –
Vas9 L −87%, better
BL14.3 T·m –
Xmax2 mm −83%, worse
Sensitivity97 dB +9.1, better
SB AcousticsMW19PF-8
No current priceFs30 Hz +11%, worse
Qts0.34 –
Vas63 L −11%, better
BL7 T·m −52%, worse
Xmax6.5 mm −46%, worse
Sensitivity88.7 dB +0.8
Tang BandW8-740P
No current priceFs30 Hz +11%, worse
Qts0.28 −18%, better
Vas20.0 L −72%, better
BL13.7 T·m −6%
Xmax12.1 mm –
Sensitivity84.4 dB −3.5, worse
Dayton Audio8MB200N-8
No current priceFs94 Hz +248%, worse
Qts0.32 −6%
Vas8.8 L −88%, better
BL14.4 T·m –
Xmax3.9 mm −67%, worse
Sensitivity95.2 dB +7.3, better
JensenBP8150-8
No current priceFs75 Hz +177%, worse
Qts0.33 –
Vas13.1 L −81%, better
BL13.3 T·m −9%
Xmax3.1 mm −74%, worse
Sensitivity93.8 dB +5.9, better
B&C8CXN64
No current priceFs71 Hz +163%, worse
Qts0.33 –
Vas10.5 L −85%, better
BL15.5 T·m +6%
Xmax5.5 mm −54%, worse
Sensitivity92.3 dB +4.4, better
Tang BandW8-1363SBF
No current priceFs32 Hz +19%, worse
Qts0.39 +15%, worse
Vas13.4 L −81%, better
BL13.0 T·m −11%, worse
Xmax12 mm –
Sensitivity82.1 dB −5.8, worse
Beyma8CFX260ND
No current priceFs100 Hz +270%, worse
Qts0.35 –
Vas8 L −89%, better
BL13.5 T·m −7%
Xmax6 mm −50%, worse
Sensitivity95.4 dB +7.5, better
KartesianBOM185_VKI
No current priceFs38 Hz +41%, worse
Qts0.32 −6%
Vas32.2 L −54%, better
BL11.6 T·m −20%, worse
Xmax10 mm −17%, worse
Sensitivity89.2 dB +1.3
HiViE8N
No current priceFs35 Hz +30%, worse
Qts0.33 –
Vas52.5 L −25%, better
BL10.4 T·m −29%, worse
Xmax4.9 mm −59%, worse
Sensitivity89.9 dB +2, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
No current price found. Pricing may appear after the next vendor refresh.