GRS8FR-8
£17.54 · 94% less, betterFs45 Hz +67%, worse
Qts0.56 +14%, worse
Vas37.0 L –
BL8.5 T·m −12%, worse
Xmax3 mm −75%, worse
Sensitivity89.3 dB +5.8, better
8-inch LF driver · SB series · 38 mm voice coil
Volt SB220.1 8Ω
8 Ω · 20–1000 Hz
£285.12
SteadyWilmslow Audio · All 2 offers
- Fs
- 27Hz
- Xmax
- 12mm
- SPL
- 84dB
- Pe
- –
- BL
- 9.7T·m
- Vd
- 272cm³
- Qts
- 0.49
- Vas
- 37L
Volt SB220.1 is an 8-inch 8 ohm LF driver. The validated T/S data includes Fs 27 Hz, Qts 0.49, Vas 37.4 L, Xmax 12 mm, sensitivity 83.5 dB, plus 272 cm³ Vd and 51 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 £285.12.
The published T/S values agree with each other
Thiele/Small
- Fs
- 27Hz
- Qts
- 0.49
- Qes
- 0.53
- Qms
- 5.9
- Vas
- 37.4L
- Re
- 4.8Ω
- Le
- 0.85mH
Motor and cone
- BL
- 9.7T·m
- Sd
- 227cm²
- Mms
- 50g
- Xmax
- 12mm
- Vd †
- 272cm³
- Voice coil
- 38mm
Power and response
- Sensitivity †
- 83.5dB
- Manufacturer sensitivity
- 86dB
- Impedance
- 8Ω
- Range
- 20–1000Hz
- EBP †
- 51 · Sealed or vented
Size and mounting
- Diameter
- 235mm
- Weight
- 4.1kg
Other published values
- Cms
- 0.58mm/N
- Rms
- 1.70kg/s
- Xmech
- 30
Sensitivity shows 83.5 dB, calculated from the T/S values. Volt publishes 86.0 dB, 2.5 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Volt lists
LF · Primary · 8″
- BL
- 9.7T·m
- Fs
- 27Hz
- Le
- 0.85mH
- Re
- 4.8Ω
- Sd
- 227cm²
- Cms
- 0.58mm/N
- Mms
- 50g
- Qes
- 0.53
- Qms
- 5.9
- Qts
- 0.49
- Rms
- 1.70kg/s
- SPL
- 83.5dB
- Vas
- 37.4L
- Xmax
- 12mm
- Xmech
- 30
- Impedance
- 8Ω
- Sensitivity
- 86dB
- Low limit
- 20Hz
- Calculated sensitivity †
- 83.5dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 86dB
- Voice coil
- 38mm
- Weight
- 4.1kg
- Diameter
- 235mm
02
Compare
Same-size drivers, compared with the SB220.1. Clear differences are green when better and red when worse.
This driverSB220.1
Best price
£285.12
Fs
27 Hz
Qts
0.49
Vas
37.4 L
BL
9.7 T·m
Xmax
12 mm
Sensitivity
83.5 dB
Power
–
Dayton AudioPCS8-4
£29.91 · 90% less, betterFs43 Hz +59%, worse
Qts0.49 –
Vas20.5 L −45%, better
BL8.4 T·m −14%, worse
Xmax5 mm −58%, worse
Sensitivity86.7 dB +3.2, better
GRS8SMP-8
£29.91 · 90% less, betterFs41 Hz +52%, worse
Qts0.46 −6%
Vas32.5 L −13%, better
BL8.9 T·m −8%
Xmax5.5 mm −54%, worse
Sensitivity88.1 dB +4.6, better
PRV Audio8MR450A
£33.60 · 88% less, betterFs65 Hz +142%, worse
Qts0.55 +12%, worse
Vas34.9 L −7%
BL7.6 T·m −22%, worse
Xmax4 mm −67%, worse
Sensitivity94.3 dB +10.8, better
Dayton AudioDC200-8
£35.92 · 87% less, betterFs30 Hz +12%, worse
Qts0.42 −14%, better
Vas45.7 L +22%, worse
BL9.5 T·m –
Xmax4.5 mm −63%, worse
Sensitivity86.2 dB +2.7, better
Dayton AudioMB820-8
£37.39 · 87% less, betterFs69 Hz +156%, worse
Qts0.46 −6%
Vas15.8 L −58%, better
BL9.6 T·m –
Xmax4 mm −67%, worse
Sensitivity92 dB +8.5, better
Dayton AudioPA200-8
£44.87 · 84% less, betterFs55 Hz +104%, worse
Qts0.48 –
Vas26.6 L −29%, better
BL9.3 T·m −5%
Xmax3 mm −75%, worse
Sensitivity91.5 dB +8, better
Beyma8CMV2
£44.94 · 84% less, betterFs75 Hz +178%, worse
Qts0.52 +6%
Vas14.6 L −61%, better
BL9.6 T·m –
Xmax5.7 mm −53%, worse
Sensitivity92.5 dB +9, better
HiViF8
£52.71 · 82% less, betterFs37 Hz +37%, worse
Qts0.40 −18%, better
Vas38.8 L +4%
BL10.3 T·m +6%
Xmax5 mm −58%, worse
Sensitivity88.5 dB +5, better
GRS8SW-4HE-8
£71.13 · 75% less, betterFs25 Hz −8%
Qts0.45 −8%
Vas31.7 L −15%, better
BL10.5 T·m +8%
Xmax10.8 mm −10%
Sensitivity81.9 dB −1.6
Sica8 H 2 CP
£81.97 · 71% less, betterFs39 Hz +45%, worse
Qts0.43 −12%, better
Vas35.9 L −4%
BL9.9 T·m –
Xmax6.5 mm −46%, worse
Sensitivity88.6 dB +5.1, better
SB AcousticsSB23MFCL45-8
£117.27 · 59% less, betterFs29 Hz +6%
Qts0.43 −12%, better
Vas37 L –
BL11.3 T·m +16%, better
Xmax10.5 mm −13%, worse
Sensitivity84.7 dB +1.2
SB AcousticsSB23MFCL45-4
£117.27 · 59% less, betterFs27 Hz –
Qts0.34 −31%, better
Vas37 L –
BL9.6 T·m –
Xmax12 mm –
Sensitivity85.1 dB +1.6
FaitalPRO8PR150
£133.93 · 53% less, betterFs75 Hz +178%, worse
Qts0.48 –
Vas16.2 L −57%, better
BL10.4 T·m +7%
Xmax5 mm −58%, worse
Sensitivity93.1 dB +9.6, better
VisatonTIW 200 XS
£141.87 · 50% less, betterFs30 Hz +11%, worse
Qts0.46 −6%
Vas51.5 L +38%, worse
BL8.5 T·m −12%, worse
Xmax11 mm −8%
Sensitivity86.5 dB +3, better
WavecorSW215WA01
£146.45 · 49% less, betterFs33 Hz +22%, worse
Qts0.49 –
Vas26 L −30%, better
BL8.4 T·m −13%, worse
Xmax10 mm −17%, worse
Sensitivity84.7 dB +1.2
WavecorSW215WA02
£146.45 · 49% less, betterFs30 Hz +11%, worse
Qts0.44 −10%, better
Vas32.5 L −13%, better
BL11.4 T·m +17%, better
Xmax10 mm −17%, worse
Sensitivity84.8 dB +1.3
Dayton AudioE180HE-44
£159.01 · 44% less, betterFs35 Hz +30%, worse
Qts0.46 −6%
Vas16.1 L −57%, better
BL9.6 T·m –
Xmax14.7 mm +22%, better
Sensitivity83.1 dB –
WavecorSW182BD04
£161.18 · 43% less, betterFs37 Hz +38%, worse
Qts0.49 –
Vas12.7 L −66%, better
BL10.2 T·m +5%
Xmax7 mm −42%, worse
Sensitivity83.1 dB –
WavecorSW223BD03
£328.81 · 15% more, worseFs25 Hz −7%
Qts0.46 −6%
Vas28 L −25%, better
BL13.1 T·m +35%, better
Xmax11.7 mm –
Sensitivity81.6 dB −1.9
WavecorSW223BD02
£328.81 · 15% more, worseFs24 Hz −11%, better
Qts0.40 −18%, better
Vas28 L −25%, better
BL11 T·m +13%, better
Xmax11.7 mm –
Sensitivity81.7 dB −1.8
SEASXM011-08 L22ROY2
£418.61 · 47% more, worseFs27 Hz –
Qts0.44 −10%, better
Vas27 L −28%, better
BL13.6 T·m +40%, better
Xmax11.5 mm −4%
Sensitivity82.4 dB −1.1
HiViMY8N
No current priceFs37 Hz +37%, worse
Qts0.43 −12%, better
Vas40.9 L +10%
BL9.9 T·m –
Xmax5 mm −58%, worse
Sensitivity87.9 dB +4.4, better
Cube AudioF8 NEO V2
No current priceFs39 Hz +44%, worse
Qts0.47 −4%
Vas45 L +20%, worse
BL9.5 T·m –
Xmax3 mm −75%, worse
Sensitivity89.5 dB +6, better
HiViD8.8MKII
No current priceFs39 Hz +44%, worse
Qts0.57 +16%, worse
Vas38.1 L –
BL9.6 T·m –
Xmax5 mm −58%, worse
Sensitivity87.7 dB +4.2, better
SEASXM011-04 L22ROY2
No current priceFs27 Hz –
Qts0.39 −20%, better
Vas28 L −25%, better
BL10.5 T·m +8%
Xmax11.5 mm −4%
Sensitivity83.2 dB –
REDCATT81FIND
No current priceFs80 Hz +196%, worse
Qts0.50 –
Vas11.3 L −70%, better
BL10.2 T·m +5%
Xmax2.3 mm −81%, worse
Sensitivity92.4 dB +8.9, better
Tang BandW8-670T
No current priceFs40 Hz +48%, worse
Qts0.45 −8%
Vas23.3 L −38%, better
BL9.4 T·m –
Xmax7.8 mm −35%, worse
Sensitivity86.9 dB +3.4, better
KartesianWOM185_VKI
No current priceFs32 Hz +19%, worse
Qts0.32 −35%, better
Vas33.6 L −10%, better
BL10.2 T·m +5%
Xmax12 mm –
Sensitivity87.3 dB +3.8, better
HiViF8N
No current priceFs35 Hz +30%, worse
Qts0.39 −20%, better
Vas44.2 L +18%, worse
BL10.1 T·m +4%
Xmax5 mm −58%, worse
Sensitivity87.7 dB +4.2, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Wilmslow Audio | £285.12, the lowest price | Stock not listed | Visit shop at Wilmslow Audio | |
SoundImports Not currently listed · Last seen 15 Apr 2026 · Import VAT and duty may apply | £251.15 | Stock not listed | Visit shop at SoundImports |
Best price over time
Tracked since 23 Jul