Dayton AudioPCS10-4
£33.65 · 13% less, betterFs33 Hz +18%, worse
Qts0.64 +25%, worse
Vas49 L −43%, better
BL9.1 T·m +11%, better
Xmax5.6 mm +12%, better
Sensitivity85.9 dB −0.9
10-inch LF driver · 39 mm voice coil · 70 W
GRS 10SMP-4 4Ω
4 Ω · 24–2000 Hz
£38.89
SteadyParts Express · 320 in stock · Ships from United States · All 2 offers
- Fs
- 28Hz
- Xmax
- 5mm
- SPL
- 87dB
- Pe
- 70W
- BL
- 8.2T·m
- Vd
- 170cm³
- Qts
- 0.51
- Vas
- 86L
GRS 10SMP-4 is a 10-inch 4 ohm LF driver rated at 70 W RMS. The validated T/S data includes Fs 28 Hz, Qts 0.51, Vas 86 L, Xmax 5 mm, sensitivity 86.8 dB, plus 170 cm³ Vd and 44 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 £38.89.
The published T/S values agree with each other
Thiele/Small
- Fs
- 28Hz
- Qts
- 0.51
- Qes
- 0.63
- Qms
- 2.7
- Vas
- 86L
- Re
- 3.8Ω
- Le
- 0.34mH
Motor and cone
- BL
- 8.2T·m
- Sd
- 340cm²
- Mms
- 63g
- Xmax
- 5mm
- Vd †
- 170cm³
- Voice coil
- 39mm
Power and response
- Sensitivity †
- 86.8dB
- Manufacturer sensitivity
- 90dB
- Power
- 70W
- Impedance
- 4Ω
- Range
- 24–2000Hz
- EBP †
- 44 · Leans sealed
Other published values
- Cms
- 0.51mm/N
Sensitivity shows 86.8 dB, calculated from the T/S values. GRS publishes 90.0 dB, 3.2 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else GRS lists
LF · Primary · 10″
- BL
- 8.2T·m
- Fs
- 28Hz
- Le
- 0.34mH
- Re
- 3.8Ω
- Sd
- 340cm²
- Cms
- 0.51mm/N
- Mms
- 63g
- Qes
- 0.63
- Qms
- 2.7
- Qts
- 0.51
- SPL
- 86.8dB
- Vas
- 86L
- Xmax
- 5mm
- Power
- 70W
- Impedance
- 4Ω
- Sensitivity
- 90dB
- Low limit
- 24Hz
- Calculated sensitivity †
- 86.8dB
- High limit
- 2000Hz
- Manufacturer sensitivity
- 90dB
- Voice coil
- 39mm
02
Compare
Same-size drivers, compared with the 10SMP-4. Clear differences are green when better and red when worse.
This driver10SMP-4
Best price
£38.89
Fs
28 Hz
Qts
0.51
Vas
86 L
BL
8.2 T·m
Xmax
5 mm
Sensitivity
86.8 dB
Power
70 W
GRS10SMP-8
£38.89 · Same priceFs29 Hz +4%
Qts0.58 +14%, worse
Vas81 L −6%
BL9.6 T·m +17%, better
Xmax5 mm –
Sensitivity86.4 dB –
FaitalPRO10FE200
£40.91 · 5% more, worseFs55 Hz +96%, worse
Qts0.49 −4%
Vas61 L −29%, better
BL7 T·m −15%, worse
Xmax4.6 mm −8%
Sensitivity94.9 dB +8.1, better
Dayton AudioPA255-8
£56.09 · 44% more, worseFs51 Hz +80%, worse
Qts0.61 +20%, worse
Vas41.2 L −52%, better
BL10.6 T·m +29%, better
Xmax5 mm –
Sensitivity91.1 dB +4.3, better
SB AcousticsSB26SFCL38-4
£57.69 · 48% more, worseFs27 Hz –
Qts0.43 −16%, better
Vas104 L +21%, worse
BL8.2 T·m –
Xmax7.9 mm +58%, better
Sensitivity88.6 dB +1.8
SB AcousticsSB26SFCL38-8
£58.53 · 50% more, worseFs28 Hz –
Qts0.53 +4%
Vas107 L +24%, worse
BL9.6 T·m +17%, better
Xmax8.2 mm +64%, better
Sensitivity87.7 dB +0.9
EminenceALPHA-10A
£60.00 · 54% more, worseFs50 Hz +79%, worse
Qts0.59 +16%, worse
Vas82.2 L −4%
BL7.5 T·m −9%
Xmax3.2 mm −36%, worse
Sensitivity94 dB +7.2, better
PeerlessSLS-P830668
£66.98 · 72% more, worseFs35 Hz +25%, worse
Qts0.59 +16%, worse
Vas62.9 L −27%, better
BL10.3 T·m +26%, better
Xmax10.9 mm +118%, better
Sensitivity88.2 dB +1.4
Dayton AudioDS270-8
£71.05 · 83% more, worseFs32 Hz +13%, worse
Qts0.44 −14%, better
Vas87.7 L –
BL10.1 T·m +23%, better
Xmax5.5 mm +10%, better
Sensitivity89.1 dB +2.3, better
EminenceBETA-10A
£82.50 · 112% more, worseFs53 Hz +89%, worse
Qts0.49 −4%
Vas60.1 L −30%, better
BL9.6 T·m +17%, better
Xmax3 mm −40%, worse
Sensitivity94.4 dB +7.6, better
REDCATT101NPM
£83.69 · 115% more, worseFs53 Hz +89%, worse
Qts0.55 +8%
Vas49.7 L −42%, better
BL9.6 T·m +17%, better
Xmax3.3 mm −35%, worse
Sensitivity92.9 dB +6.1, better
EminenceBETA-10B
£88.07 · 126% more, worseFs52 Hz +84%, worse
Qts0.51 –
Vas61.4 L −29%, better
BL15.1 T·m +85%, better
Xmax3 mm −40%, worse
Sensitivity93.7 dB +6.9, better
Dayton AudioDSA270-8
£89.75 · 131% more, worseFs30 Hz +6%
Qts0.39 −24%, better
Vas88.1 L –
BL11.2 T·m +37%, better
Xmax5.5 mm +10%, better
Sensitivity88.9 dB +2.1, better
EminenceLEGEND BP102
£91.00 · 134% more, worseFs35 Hz +25%, worse
Qts0.43 −16%, better
Vas91.2 L +6%
BL10 T·m +22%, better
Xmax6.2 mm +24%, better
Sensitivity91.2 dB +4.4, better
Dayton AudioRS270-8
£112.19 · 188% more, worseFs30 Hz +6%
Qts0.47 −8%
Vas96.5 L +12%, worse
BL10.3 T·m +26%, better
Xmax6.6 mm +32%, better
Sensitivity88.2 dB +1.4
Dayton AudioRSS265HF-8
£213.77 · 450% more, worseFs25 Hz −11%, better
Qts0.49 −4%
Vas52.5 L −39%, better
BL15 T·m +83%, better
Xmax14.3 mm +186%, better
Sensitivity83.4 dB −3.4, worse
CIARECME250
No current priceFs48 Hz +71%, worse
Qts0.48 −6%
Vas74 L −14%, better
BL7.5 T·m −9%
Xmax4.5 mm −10%, worse
Sensitivity93.9 dB +7.1, better
MonacorSP-252E
No current priceFs42 Hz +50%, worse
Qts0.50 –
Vas57 L −34%, better
BL8.5 T·m +4%
Xmax4 mm −20%, worse
Sensitivity90.5 dB +3.7, better
MonacorSP-252C
No current priceFs35 Hz +25%, worse
Qts0.41 −20%, better
Vas96 L +12%, worse
BL8.1 T·m –
Xmax5 mm –
Sensitivity91.5 dB +4.7, better
Acoustic EleganceIB10AU-4
No current priceFs25 Hz −11%, better
Qts0.48 −6%
Vas68 L −21%, better
BL8.8 T·m +7%
Xmax18 mm +260%, better
Sensitivity84.8 dB −2, worse
CIARECMI250
No current priceFs55 Hz +96%, worse
Qts0.50 –
Vas34 L −60%, better
BL9 T·m +10%
Xmax4.5 mm −10%, worse
Sensitivity92.4 dB +5.6, better
CIARECMI250ND
No current priceFs59 Hz +111%, worse
Qts0.50 –
Vas34 L −60%, better
BL9 T·m +10%
Xmax4.5 mm −10%, worse
Sensitivity93.3 dB +6.5, better
Dayton AudioSD270A-88
No current priceFs26 Hz −6%
Qts0.43 −16%, better
Vas107.5 L +25%, worse
BL7.8 T·m −5%
Xmax6 mm +20%, better
Sensitivity87.9 dB +1.1
EminenceFS10.20A8
No current priceFs56 Hz +100%, worse
Qts0.48 −6%
Vas45 L −48%, better
BL10.4 T·m +27%, better
Xmax5.5 mm +10%, better
Sensitivity93.7 dB +6.9, better
KartesianSUB265_VKI-S
No current priceFs22 Hz −21%, better
Qts0.46 −10%
Vas103.4 L +20%, worse
BL9.1 T·m +11%, better
Xmax16 mm +220%, better
Sensitivity85.5 dB −1.3
Sica10 SR 2 CP
No current priceFs33 Hz +17%, worse
Qts0.49 −4%
Vas73 L −15%, better
BL10.8 T·m +32%, better
Xmax7 mm +40%, better
Sensitivity88.7 dB +1.9
WavecorSW270WA01_SUBWOOFER
No current priceFs28 Hz –
Qts0.49 −4%
Vas51 L −41%, better
BL9.7 T·m +18%, better
Xmax11 mm +120%, better
Sensitivity85.3 dB −1.5
EminenceLEGEND B810
No current priceFs52 Hz +86%, worse
Qts0.65 +27%, worse
Vas66.4 L −23%, better
BL17.7 T·m +116%, better
Xmax4.7 mm −6%
Sensitivity93.4 dB +6.6, better
Acoustic EleganceIB10AU-8
No current priceFs25 Hz −11%, better
Qts0.48 −6%
Vas68 L −21%, better
BL12.4 T·m +51%, better
Xmax18 mm +260%, better
Sensitivity84.8 dB −2, worse
Cube AudioF10 SELECT V2
No current priceFs28 Hz –
Qts0.58 +14%, worse
Vas185 L +115%, worse
BL9.2 T·m +12%, better
Xmax2.5 mm −50%, worse
Sensitivity90.1 dB +3.3, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports5.0 out of 51 rating · 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 |
|---|---|---|---|---|
Parts Express Import VAT and duty may apply | £38.89, the lowest price | 320 in stock | Visit shop at Parts Express | |
SoundImports Import VAT and duty may apply | £58.57 | 51% above the lowest price | 7 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr