GRS8PT-8
£24.68 · 41% more, worseFs59 Hz +31%, worse
Qts0.55 –
Vas20.1 L −46%, better
BL10.2 T·m +20%, better
Xmax6.5 mm +117%, better
Sensitivity90.5 dB +1.2
8-inch LF driver · 38 mm voice coil · 60 W
GRS 8FR-8 8Ω
8 Ω · 39–16000 Hz
£17.54
SteadySoundImports · 219 in stock · Ships from Netherlands · All 1 offer
- Fs
- 45Hz
- Xmax
- 3mm
- SPL
- 89dB
- Pe
- 60W
- BL
- 8.5T·m
- Vd
- 65cm³
- Qts
- 0.56
- Vas
- 37L
GRS 8FR-8 is an 8-inch 8 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 45 Hz, Qts 0.56, Vas 37.0 L, Xmax 3 mm, sensitivity 89.3 dB, plus 65 cm³ Vd and 72 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 £17.54.
The published T/S values agree with each other
Thiele/Small
- Fs
- 45Hz
- Qts
- 0.56
- Qes
- 0.63
- Qms
- 4.8
- Vas
- 37.0L
- Re
- 7.3Ω
- Le
- 1.19mH
Motor and cone
- BL
- 8.5T·m
- Sd
- 215cm²
- Mms
- 22g
- Xmax
- 3mm
- Vd †
- 65cm³
- Voice coil
- 38mm
Power and response
- Sensitivity †
- 89.3dB
- Manufacturer sensitivity
- 89.7dB
- Power
- 60W
- Impedance
- 8Ω
- Range
- 39–16000Hz
- EBP †
- 72 · Sealed or vented
Size and mounting
- Diameter
- 203.2mm
Other published values
- Cms
- 0.56mm/N
- Power Peak
- 85
† Calculated by bits from the published values
What this validation status means
Everything else GRS lists
LF · Primary · 8″
- BL
- 8.5T·m
- Fs
- 45Hz
- Le
- 1.19mH
- Re
- 7.3Ω
- Sd
- 215cm²
- Cms
- 0.56mm/N
- Mms
- 22g
- Qes
- 0.63
- Qms
- 4.8
- Qts
- 0.56
- SPL
- 89.3dB
- Vas
- 37.0L
- Xmax
- 3mm
- Power
- 60W
- Impedance
- 8Ω
- Power Peak
- 85
- Sensitivity
- 89.7dB
- Low limit
- 39Hz
- Calculated sensitivity †
- 89.3dB
- High limit
- 16000Hz
- Manufacturer sensitivity
- 89.7dB
- Voice coil
- 38mm
- Diameter
- 203.2mm
02
Compare
Same-size drivers, compared with the 8FR-8. Clear differences are green when better and red when worse.
This driver8FR-8
Best price
£17.54
Fs
45 Hz
Qts
0.56
Vas
37.0 L
BL
8.5 T·m
Xmax
3 mm
Sensitivity
89.3 dB
Power
60 W
REDCATT81FHW
£28.47 · 62% more, worseFs39 Hz −14%, better
Qts0.52 −7%
Vas21.5 L −42%, better
BL8.3 T·m −3%
Xmax6.1 mm +103%, better
Sensitivity85.5 dB −3.8, worse
Dayton AudioPCS8-4
£29.91 · 70% more, worseFs43 Hz −5%
Qts0.49 −13%, better
Vas20.5 L −45%, better
BL8.4 T·m –
Xmax5 mm +67%, better
Sensitivity86.7 dB −2.6, worse
GRS8SMP-8
£29.91 · 71% more, worseFs41 Hz −9%
Qts0.46 −18%, better
Vas32.5 L −12%, better
BL8.9 T·m +5%
Xmax5.5 mm +83%, better
Sensitivity88.1 dB −1.2
Sica8 H 1 CS
£33.41 · 90% more, worseFs50 Hz +10%
Qts0.54 −4%
Vas27.8 L −25%, better
BL8.7 T·m –
Xmax4 mm +33%, better
Sensitivity89.5 dB –
PRV Audio8MR450A
£33.60 · 92% more, worseFs65 Hz +45%, worse
Qts0.55 –
Vas34.9 L −6%
BL7.6 T·m −11%, worse
Xmax4 mm +33%, better
Sensitivity94.3 dB +5, better
FaitalPRO8FE200
£33.72 · 92% more, worseFs80 Hz +77%, worse
Qts0.63 +12%, worse
Vas16.1 L −56%, better
BL8.2 T·m −4%
Xmax4.7 mm +56%, better
Sensitivity93 dB +3.7, better
Dayton AudioPA200-8
£44.87 · 156% more, worseFs55 Hz +22%, worse
Qts0.48 −14%, better
Vas26.6 L −28%, better
BL9.3 T·m +9%
Xmax3 mm –
Sensitivity91.5 dB +2.2, better
REDCATT82FHM
£49.82 · 184% more, worseFs42 Hz −7%
Qts0.61 +9%
Vas33.6 L −9%
BL7.6 T·m −11%, worse
Xmax5.5 mm +82%, better
Sensitivity87.2 dB −2.1, worse
EminenceALPHA-8A
£54.66 · 212% more, worseFs73 Hz +62%, worse
Qts0.59 +5%
Vas17.7 L −52%, better
BL7.8 T·m −8%
Xmax3.2 mm +7%
Sensitivity92.1 dB +2.8, better
CIAREPM203
£69.50 · 296% more, worseFs91 Hz +102%, worse
Qts0.54 −4%
Vas10 L −73%, better
BL10.1 T·m +18%, better
Xmax4.4 mm +47%, better
Sensitivity92.7 dB +3.4, better
Dayton AudioRSS210HF-4
£144.69 · 725% more, worseFs30 Hz −34%, better
Qts0.57 –
Vas23.7 L −36%, better
BL8.1 T·m −5%
Xmax9 mm +200%, better
Sensitivity81.5 dB −7.8, worse
WavecorSW215WA01
£146.45 · 735% more, worseFs33 Hz −27%, better
Qts0.49 −13%, better
Vas26 L −30%, better
BL8.4 T·m –
Xmax10 mm +233%, better
Sensitivity84.7 dB −4.6, worse
Tang BandW8-2145
£150.67 · 759% more, worseFs40 Hz −11%, better
Qts0.45 −20%, better
Vas67.7 L +83%, worse
BL6.6 T·m −23%, worse
Xmax3 mm –
Sensitivity90.5 dB +1.2
Scanspeak18M/4631T00
£192.54 · 998% more, worseFs65 Hz +44%, worse
Qts0.60 +7%
Vas14 L −62%, better
BL5.6 T·m −34%, worse
Xmax3 mm –
Sensitivity89.6 dB –
VoltSB220.1
£285.12 · 1525% more, worseFs27 Hz −40%, better
Qts0.49 −13%, better
Vas37.4 L –
BL9.7 T·m +14%, better
Xmax12 mm +300%, better
Sensitivity83.5 dB −5.8, worse
HiViD8.8MKII
No current priceFs39 Hz −14%, better
Qts0.57 –
Vas38.1 L +3%
BL9.6 T·m +13%, better
Xmax5 mm +67%, better
Sensitivity87.7 dB −1.6
HiViD8.4MKII
No current priceFs36 Hz −20%, better
Qts0.56 –
Vas40 L +8%
BL7.1 T·m −17%, worse
Xmax5 mm +67%, better
Sensitivity86.9 dB −2.4, worse
PRV Audio8MR500-NDY-4
No current priceFs79 Hz +74%, worse
Qts0.54 −4%
Vas24.3 L −34%, better
BL6.0 T·m −29%, worse
Xmax3 mm –
Sensitivity95.2 dB +5.9, better
Cube AudioF8 NEO V2
No current priceFs39 Hz −14%, better
Qts0.47 −16%, better
Vas45 L +22%, worse
BL9.5 T·m +12%, better
Xmax3 mm –
Sensitivity89.5 dB –
CelestionTF0815RE
No current priceFs65 Hz +44%, worse
Qts0.53 −5%
Vas22.1 L −40%, better
BL8.9 T·m +4%
Xmax5.3 mm +75%, better
Sensitivity91.7 dB +2.4, better
PRV Audio8MR360
No current priceFs91 Hz +101%, worse
Qts0.56 –
Vas18.5 L −50%, better
BL8.3 T·m –
Xmax4 mm +33%, better
Sensitivity95.8 dB +6.5, better
MonacorSPM-205/4
No current priceFs37 Hz −18%, better
Qts0.55 –
Vas72 L +95%, worse
BL4.8 T·m −44%, worse
Xmax3 mm –
Sensitivity89.3 dB –
Beyma8CX300FE
No current priceFs89 Hz +97%, worse
Qts0.55 –
Vas10.8 L −71%, better
BL9.6 T·m +13%, better
Xmax6 mm +100%, better
Sensitivity92.9 dB +3.6, better
PRV Audio8MR400
No current priceFs78 Hz +73%, worse
Qts0.52 −7%
Vas20.2 L −45%, better
BL8.2 T·m −4%
Xmax4 mm +33%, better
Sensitivity94.4 dB +5.1, better
PRV Audio69MR500-PHP-4
No current priceFs92 Hz +103%, worse
Qts0.65 +16%, worse
Vas15.2 L −59%, better
BL6.8 T·m −20%, worse
Xmax2.9 mm −4%
Sensitivity94.4 dB +5.1, better
CIARECW200Z
No current priceFs49 Hz +9%
Qts0.53 −5%
Vas38.3 L +4%
BL5.2 T·m −39%, worse
Xmax4 mm +33%, better
Sensitivity90.1 dB +0.8
No photo
PHL Audio2001
No current priceFs77 Hz +71%, worse
Qts0.53 −5%
Vas13.8 L −63%, better
BL9.5 T·m +12%, better
Xmax5.5 mm +83%, better
Sensitivity92.2 dB +2.9, better
No photo
PHL Audio2001NDU
No current priceFs77 Hz +71%, worse
Qts0.53 −5%
Vas13.8 L −63%, better
BL9.5 T·m +12%, better
Xmax5.5 mm +83%, better
Sensitivity92.2 dB +2.9, better
EminenceFS8.20A8
No current priceFs74 Hz +64%, worse
Qts0.52 −7%
Vas6 L −84%, better
BL8.9 T·m +4%
Xmax5 mm +67%, better
Sensitivity88.4 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
- SoundImports4.8 out of 533 ratings · Checked 25 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 | £17.54, the lowest price | 219 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr