GRS8SMP-8
£29.91 · 58% less, betterFs41 Hz +65%, worse
Qts0.46 –
Vas32.5 L –
BL8.9 T·m −15%, worse
Xmax5.5 mm −49%, worse
Sensitivity88.1 dB +6.2, better
8-inch LF driver · 51 mm voice coil · 150 W
GRS 8SW-4HE-8 4Ω
4 Ω · 30–700 Hz
£71.13
SteadySoundImports · 173 in stock · Ships from Netherlands · All 1 offer
- Fs
- 25Hz
- Xmax
- 10.8mm
- SPL
- 82dB
- Pe
- 150W
- BL
- 10.5T·m
- Vd
- 245cm³
- Qts
- 0.45
- Vas
- 32L
GRS 8SW-4HE-8 is an 8-inch 4 ohm LF driver rated at 150 W RMS. The validated T/S data includes Fs 25 Hz, Qts 0.45, Vas 31.7 L, Xmax 10.8 mm, sensitivity 81.9 dB, plus 245 cm³ Vd and 49 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 £71.13.
The published T/S values agree with each other
Thiele/Small
- Fs
- 25Hz
- Qts
- 0.45
- Qes
- 0.51
- Qms
- 4.4
- Vas
- 31.7L
- Re
- 3.8Ω
- Le
- 2.70mH
Motor and cone
- BL
- 10.5T·m
- Sd
- 227cm²
- Mms
- 94g
- Xmax
- 10.8mm
- Vd †
- 245cm³
- Voice coil
- 51mm
Power and response
- Sensitivity †
- 81.9dB
- Manufacturer sensitivity
- 85dB
- Power
- 150W
- Impedance
- 4Ω
- Range
- 30–700Hz
- EBP †
- 49 · Leans sealed
Size and mounting
- Diameter
- 209mm
- Cutout
- 181mm
- Bolt circle
- 198mm
- Depth
- 128mm
Other published values
- Cms
- 0.44mm/N
- Power Peak
- 300
Sensitivity shows 81.9 dB, calculated from the T/S values. GRS publishes 85.0 dB, 3.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else GRS lists
LF · Primary · 8″
- BL
- 10.5T·m
- Fs
- 25Hz
- Le
- 2.70mH
- Re
- 3.8Ω
- Sd
- 227cm²
- Cms
- 0.44mm/N
- Mms
- 94g
- Qes
- 0.51
- Qms
- 4.4
- Qts
- 0.45
- SPL
- 81.9dB
- Vas
- 31.7L
- Xmax
- 10.8mm
- Power
- 150W
- Impedance
- 4Ω
- Power Peak
- 300
- Sensitivity
- 85dB
- Low limit
- 30Hz
- Calculated sensitivity †
- 81.9dB
- High limit
- 700Hz
- Manufacturer sensitivity
- 85dB
- Voice coil
- 51mm
- Diameter
- 209mm
- Depth
- 128mm
- Cutout
- 181mm
- Bolt circle
- 198mm
02
Compare
Same-size drivers, compared with the 8SW-4HE-8. Clear differences are green when better and red when worse.
This driver8SW-4HE-8
Best price
£71.13
Fs
25 Hz
Qts
0.45
Vas
31.7 L
BL
10.5 T·m
Xmax
10.8 mm
Sensitivity
81.9 dB
Power
150 W
Dayton AudioDC200-8
£35.92 · 49% less, betterFs30 Hz +22%, worse
Qts0.42 −7%
Vas45.7 L +44%, worse
BL9.5 T·m −10%
Xmax4.5 mm −58%, worse
Sensitivity86.2 dB +4.3, better
Dayton AudioMB820-8
£37.39 · 47% less, betterFs69 Hz +177%, worse
Qts0.46 –
Vas15.8 L −50%, better
BL9.6 T·m −9%
Xmax4 mm −63%, worse
Sensitivity92 dB +10.1, better
Dayton AudioPA200-8
£44.87 · 37% less, betterFs55 Hz +122%, worse
Qts0.48 +7%
Vas26.6 L −16%, better
BL9.3 T·m −12%, worse
Xmax3 mm −72%, worse
Sensitivity91.5 dB +9.6, better
HiViF8
£52.71 · 26% less, betterFs37 Hz +49%, worse
Qts0.40 −11%, better
Vas38.8 L +22%, worse
BL10.3 T·m –
Xmax5 mm −54%, worse
Sensitivity88.5 dB +6.6, better
Dayton AudioDCS205-4
£75.27 · 6% more, worseFs32 Hz +30%, worse
Qts0.37 −18%, better
Vas27 L −15%, better
BL10.7 T·m –
Xmax8.8 mm −19%, worse
Sensitivity85.6 dB +3.7, better
Sica8 H 2 CP
£81.97 · 15% more, worseFs39 Hz +57%, worse
Qts0.43 −4%
Vas35.9 L +13%, worse
BL9.9 T·m −6%
Xmax6.5 mm −40%, worse
Sensitivity88.6 dB +6.7, better
SB AcousticsSB23MFCL45-8
£117.27 · 65% more, worseFs29 Hz +14%, worse
Qts0.43 −4%
Vas37 L +17%, worse
BL11.3 T·m +8%
Xmax10.5 mm –
Sensitivity84.7 dB +2.8, better
FaitalPRO8PR150
£133.93 · 88% more, worseFs75 Hz +201%, worse
Qts0.48 +7%
Vas16.2 L −49%, better
BL10.4 T·m –
Xmax5 mm −54%, worse
Sensitivity93.1 dB +11.2, better
VisatonTIW 200 XS
£141.87 · 99% more, worseFs30 Hz +20%, worse
Qts0.46 –
Vas51.5 L +62%, worse
BL8.5 T·m −19%, worse
Xmax11 mm –
Sensitivity86.5 dB +4.6, better
WavecorSW215WA02
£146.45 · 106% more, worseFs30 Hz +20%, worse
Qts0.44 –
Vas32.5 L –
BL11.4 T·m +9%
Xmax10 mm −7%
Sensitivity84.8 dB +2.9, better
WavecorSW215WA01
£146.45 · 106% more, worseFs33 Hz +33%, worse
Qts0.49 +9%
Vas26 L −18%, better
BL8.4 T·m −20%, worse
Xmax10 mm −7%
Sensitivity84.7 dB +2.8, better
Dayton AudioE180HE-44
£159.01 · 124% more, worseFs35 Hz +41%, worse
Qts0.46 –
Vas16.1 L −49%, better
BL9.6 T·m −9%
Xmax14.7 mm +36%, better
Sensitivity83.1 dB +1.2
Dayton AudioRSS210HO-4
£175.79 · 147% more, worseFs30 Hz +19%, worse
Qts0.40 −11%, better
Vas18.7 L −41%, better
BL12 T·m +14%, better
Xmax11 mm –
Sensitivity82.3 dB –
VoltSB220.1
£285.12 · 301% more, worseFs27 Hz +8%
Qts0.49 +9%
Vas37.4 L +18%, worse
BL9.7 T·m −7%
Xmax12 mm +11%, better
Sensitivity83.5 dB +1.6
WavecorSW223BD03
£328.81 · 362% more, worseFs25 Hz –
Qts0.46 –
Vas28 L −12%, better
BL13.1 T·m +25%, better
Xmax11.7 mm +8%
Sensitivity81.6 dB –
WavecorSW223BD02
£328.81 · 362% more, worseFs24 Hz −4%
Qts0.40 −11%, better
Vas28 L −12%, better
BL11 T·m +5%
Xmax11.7 mm +8%
Sensitivity81.7 dB –
SEASXM011-08 L22ROY2
£418.61 · 489% more, worseFs27 Hz +8%
Qts0.44 –
Vas27 L −15%, better
BL13.6 T·m +30%, better
Xmax11.5 mm +6%
Sensitivity82.4 dB +0.5
AccutonAS190-9-251
£1,133.72 · 1494% more, worseFs33 Hz +34%, worse
Qts0.44 –
Vas26.7 L −16%, better
BL13.5 T·m +29%, better
Xmax9 mm −17%, worse
Sensitivity85.1 dB +3.2, better
SEASXM011-04 L22ROY2
No current priceFs27 Hz +8%
Qts0.39 −13%, better
Vas28 L −12%, better
BL10.5 T·m –
Xmax11.5 mm +6%
Sensitivity83.2 dB +1.3
Tang BandW8-670T
No current priceFs40 Hz +61%, worse
Qts0.45 –
Vas23.3 L −27%, better
BL9.4 T·m −10%, worse
Xmax7.8 mm −27%, worse
Sensitivity86.9 dB +5, better
Tang BandW8-1747A
No current priceFs30 Hz +20%, worse
Qts0.41 −9%
Vas23.2 L −27%, better
BL10.0 T·m −5%
Xmax8 mm −26%, worse
Sensitivity83 dB +1.1
Tang BandW8-670Q
No current priceFs38 Hz +53%, worse
Qts0.46 –
Vas24.9 L −21%, better
BL12.3 T·m +17%, better
Xmax7 mm −35%, worse
Sensitivity86.3 dB +4.4, better
HiViMY8N
No current priceFs37 Hz +49%, worse
Qts0.43 −4%
Vas40.9 L +29%, worse
BL9.9 T·m −6%
Xmax5 mm −54%, worse
Sensitivity87.9 dB +6, better
HiViD8G
No current priceFs35 Hz +41%, worse
Qts0.41 −9%
Vas30.3 L −4%
BL13 T·m +24%, better
Xmax8.3 mm −23%, worse
Sensitivity86.4 dB +4.5, better
No photo
PHL Audio2560-3
No current priceFs79 Hz +217%, worse
Qts0.45 –
Vas10.7 L −66%, better
BL10.4 T·m –
Xmax5.5 mm −49%, worse
Sensitivity92.3 dB +10.4, better
LavoceNBASS08-20
No current priceFs55 Hz +121%, worse
Qts0.48 +7%
Vas18.4 L −42%, better
BL11.3 T·m +8%
Xmax6.5 mm −40%, worse
Sensitivity89.9 dB +8, better
LavoceCPF082.00K
No current priceFs93 Hz +273%, worse
Qts0.46 –
Vas11.1 L −65%, better
BL10.9 T·m +4%
Xmax3.3 mm −69%, worse
Sensitivity94.4 dB +12.5, better
Cube AudioF8 NEO V2
No current priceFs39 Hz +57%, worse
Qts0.47 +4%
Vas45 L +42%, worse
BL9.5 T·m −10%
Xmax3 mm −72%, worse
Sensitivity89.5 dB +7.6, better
HiViF8N
No current priceFs35 Hz +41%, worse
Qts0.39 −13%, better
Vas44.2 L +39%, worse
BL10.1 T·m −4%
Xmax5 mm −54%, worse
Sensitivity87.7 dB +5.8, better
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 524 ratings · Checked 24 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 | £71.13, the lowest price | 173 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr