GRS6PR-8
£13.36 · 36% less, betterFs69 Hz +44%, worse
Qts0.87 −19%, better
Vas10.6 L +39%, worse
BL6.1 T·m +13%, better
Xmax3 mm −25%, worse
Sensitivity86.8 dB +6.8, better
6.5-inch LF driver · 38 mm voice coil · 30 W
GRS 6LPSW-4 4Ω
4 Ω · 47–1500 Hz
£20.89
SteadySoundImports · 28 in stock · Ships from Netherlands · All 1 offer
- Fs
- 48Hz
- Xmax
- 4mm
- SPL
- 80dB
- Pe
- 30W
- BL
- 5.4T·m
- Vd
- 42cm³
- Qts
- 1.07
- Vas
- 8L
GRS 6LPSW-4 is a 6.5-inch 4 ohm LF driver rated at 30 W RMS. The validated T/S data includes Fs 48 Hz, Qts 1.07, Vas 7.6 L, Xmax 4 mm, sensitivity 80 dB, plus 42 cm³ Vd and 36 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 £20.89.
The published T/S values agree with each other
Thiele/Small
- Fs
- 48Hz
- Qts
- 1.07
- Qes
- 1.35
- Qms
- 5.3
- Vas
- 7.6L
- Re
- 3.7Ω
- Le
- 1mH
Motor and cone
- BL
- 5.4T·m
- Sd
- 104cm²
- Mms
- 36g
- Xmax
- 4mm
- Vd †
- 42cm³
- Voice coil
- 38mm
Power and response
- Sensitivity †
- 80dB
- Manufacturer sensitivity
- 83.2dB
- Power
- 30W
- Impedance
- 4Ω
- Range
- 47–1500Hz
- EBP †
- 36 · Leans sealed
Size and mounting
- Diameter
- 165.2mm
- Cutout
- 144.5mm
- Depth
- 64mm
Other published values
- Cms
- 0.31mm/N
Sensitivity shows 80.0 dB, calculated from the T/S values. GRS publishes 83.2 dB, 3.2 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else GRS lists
LF · Primary · 6.5″
- BL
- 5.4T·m
- Fs
- 48Hz
- Le
- 1mH
- Re
- 3.7Ω
- Sd
- 104cm²
- Cms
- 0.31mm/N
- Mms
- 36g
- Qes
- 1.35
- Qms
- 5.3
- Qts
- 1.07
- SPL
- 80dB
- Vas
- 7.6L
- Xmax
- 4mm
- Power
- 30W
- Impedance
- 4Ω
- Sensitivity
- 83.2dB
- Low limit
- 47Hz
- Calculated sensitivity †
- 80dB
- High limit
- 1500Hz
- Manufacturer sensitivity
- 83.2dB
- Voice coil
- 38mm
- Diameter
- 165.2mm
- Depth
- 64mm
- Cutout
- 144.5mm
02
Compare
Same-size drivers, compared with the 6LPSW-4. Clear differences are green when better and red when worse.
This driver6LPSW-4
Best price
£20.89
Fs
48 Hz
Qts
1.07
Vas
7.6 L
BL
5.4 T·m
Xmax
4 mm
Sensitivity
80 dB
Power
30 W
GRS6PT-8
£15.70 · 25% less, betterFs94 Hz +96%, worse
Qts0.72 −33%, better
Vas9.5 L +25%, worse
BL6.4 T·m +19%, better
Xmax4.2 mm +5%
Sensitivity91.7 dB +11.7, better
VisatonBG 17
£18.25 · 13% less, betterFs120 Hz +150%, worse
Qts0.74 −31%, better
Vas8.2 L +8%
BL5.7 T·m +6%
Xmax1.5 mm −63%, worse
Sensitivity93.6 dB +13.6, better
PRV Audio6MR200A-4
£20.13 · 4% lessFs138 Hz +188%, worse
Qts0.97 −9%
Vas3.9 L −49%, better
BL4.9 T·m −9%
Xmax2.6 mm −35%, worse
Sensitivity91.8 dB +11.8, better
PRV Audio6MB200-4
£22.37 · 7% more, worseFs124 Hz +158%, worse
Qts0.97 −9%
Vas4.0 L −48%, better
BL5.8 T·m +7%
Xmax4.8 mm +20%, better
Sensitivity90.7 dB +10.7, better
PRV Audio6MB200
£22.37 · 7% more, worseFs123 Hz +157%, worse
Qts1.13 +6%
Vas4.1 L −46%, better
BL7.0 T·m +31%, better
Xmax4.8 mm +20%, better
Sensitivity90.1 dB +10.1, better
Dayton AudioSIG150-4
£32.15 · 54% more, worseFs62 Hz +28%, worse
Qts0.49 −54%, better
Vas8.7 L +14%, worse
BL5.2 T·m −4%
Xmax4 mm –
Sensitivity87.8 dB +7.8, better
Dayton AudioRS150-8
£44.87 · 115% more, worseFs48 Hz –
Qts0.34 −68%, better
Vas16.6 L +118%, worse
BL5.6 T·m +4%
Xmax4 mm –
Sensitivity88.3 dB +8.3, better
PRV Audio6FR200
£47.27 · 126% more, worseFs112 Hz +133%, worse
Qts1.29 +21%, worse
Vas6.9 L −9%
BL5.2 T·m −4%
Xmax3.5 mm −13%, worse
Sensitivity90.4 dB +10.4, better
Dayton AudioRS150P-8A
£58.03 · 178% more, worseFs47 Hz –
Qts0.34 −68%, better
Vas16.7 L +120%, worse
BL5.6 T·m +4%
Xmax4 mm –
Sensitivity88.1 dB +8.1, better
VisatonW 165 A
£72.80 · 248% more, worseFs60 Hz +25%, worse
Qts0.63 −41%, better
Vas7.8 L +3%
BL5.0 T·m −7%
Xmax4.7 mm +16%, better
Sensitivity85.6 dB +5.6, better
LavoceCSF061.70K
£86.22 · 313% more, worseFs97 Hz +102%, worse
Qts0.69 −36%, better
Vas6.5 L −14%, better
BL6.9 T·m +28%, better
Xmax3.9 mm –
Sensitivity90.5 dB +10.5, better
Beyma6P200FE
£88.70 · 325% more, worseFs66 Hz +38%, worse
Qts0.35 −67%, better
Vas8.8 L +16%, worse
BL13.6 T·m +152%, better
Xmax4 mm –
Sensitivity90.3 dB +10.3, better
WavecorWF152BD13
£98.00 · 369% more, worseFs50 Hz +4%
Qts0.33 −69%, better
Vas9.2 L +21%, worse
BL6.3 T·m +18%, better
Xmax4.5 mm +13%, better
Sensitivity87.3 dB +7.3, better
WavecorWF152BD09
£109.96 · 426% more, worseFs52 Hz +8%
Qts0.34 −68%, better
Vas8.6 L +13%, worse
BL5.8 T·m +8%
Xmax4.5 mm +13%, better
Sensitivity87.4 dB +7.4, better
B&C6CXN36
£116.15 · 456% more, worseFs90 Hz +88%, worse
Qts0.95 −11%, better
Vas7.5 L –
BL5.3 T·m –
Xmax5 mm +25%, better
Sensitivity88.7 dB +8.7, better
RS SpeakersMW 140.38 FIBONACCI
£118.90 · 469% more, worseFs56 Hz +16%, worse
Qts0.44 −59%, better
Vas6.9 L −9%
BL6.2 T·m +14%, better
Xmax4 mm –
Sensitivity85.9 dB +5.9, better
WavecorWF152BD03
£142.76 · 583% more, worseFs56 Hz +16%, worse
Qts0.35 −67%, better
Vas9.2 L +21%, worse
BL5.8 T·m +8%
Xmax4.5 mm +13%, better
Sensitivity88.4 dB +8.4, better
JensenC6V-8
No current priceFs106 Hz +121%, worse
Qts1.08 –
Vas7 L −8%
BL5 T·m −7%
Xmax0.5 mm −88%, worse
Sensitivity91.3 dB +11.3, better
JensenP6V-4
No current priceFs114 Hz +136%, worse
Qts1.07 –
Vas5.5 L −28%, better
BL4.0 T·m −26%, worse
Xmax0.5 mm −88%, worse
Sensitivity90.7 dB +10.7, better
Audio Technology15 H 52 06 13 SDKAM-LR
No current priceFs65 Hz +35%, worse
Qts0.45 −58%, better
Vas9.2 L +21%, worse
BL6.4 T·m +19%, better
Xmax4 mm –
Sensitivity89.1 dB +9.1, better
JensenC6V-4
No current priceFs110 Hz +129%, worse
Qts0.91 −15%, better
Vas6.1 L −20%, better
BL4.1 T·m −24%, worse
Xmax0.5 mm −88%, worse
Sensitivity90.3 dB +10.3, better
CelestionFTX0617
No current priceFs100 Hz +108%, worse
Qts0.74 −31%, better
Vas7.4 L −3%
BL6.6 T·m +22%, better
Xmax3.5 mm −13%, worse
Sensitivity91 dB +11, better
PRV Audio6MR200A
No current priceFs114 Hz +138%, worse
Qts1.17 +9%
Vas3.2 L −58%, better
BL6.3 T·m +16%, better
Xmax2.6 mm −35%, worse
Sensitivity87.7 dB +7.7, better
CIARECXE184
No current priceFs113 Hz +135%, worse
Qts1.08 –
Vas3.4 L −55%, better
BL3.3 T·m −38%, worse
Xmax2.1 mm −48%, worse
Sensitivity87.5 dB +7.5, better
WavecorWF152BD10
No current priceFs49 Hz –
Qts0.32 −70%, better
Vas9.6 L +26%, worse
BL5.8 T·m +8%
Xmax4.5 mm +13%, better
Sensitivity87.4 dB +7.4, better
Lii AudioST-5
No current priceFs56 Hz +16%, worse
Qts0.66 −38%, better
Vas14.3 L +88%, worse
BL5.8 T·m +8%
Xmax4 mm –
Sensitivity86.7 dB +6.7, better
CIARECXI160
No current priceFs91 Hz +90%, worse
Qts0.51 −52%, better
Vas7.8 L –
BL6.8 T·m +26%, better
Xmax4.5 mm +13%, better
Sensitivity92.2 dB +12.2, better
No photo
LavoceCSF061.21
No current priceFs90 Hz +88%, worse
Qts0.67 −37%, better
Vas8.5 L +12%, worse
BL6.1 T·m +13%, better
Xmax3.2 mm −20%, worse
Sensitivity91 dB +11, better
REDCATT61XR
No current priceFs64 Hz +33%, worse
Qts0.72 −33%, better
Vas8.6 L +13%, worse
BL4.8 T·m −12%, worse
Xmax8.1 mm +102%, better
Sensitivity85.7 dB +5.7, 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 54 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 | £20.89, the lowest price | 28 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr