GRS8PF-8
£16.29Fs50 Hz −33%, better
Qts0.98 −7%
Vas28.9 L +59%, worse
BL6.5 T·m −12%, worse
Xmax3 mm −33%, worse
Sensitivity86.7 dB −3.8, worse
8-inch LF driver · 50 mm voice coil
PRV Audio 8MB450 8Ω
8 Ω · 75–7500 Hz
No price for delivery to the UK
- Fs
- 75Hz
- Xmax
- 4.5mm
- SPL
- 91dB
- Pe
- –
- BL
- 7.4T·m
- Vd
- 108cm³
- Qts
- 1.05
- Vas
- 18L
PRV Audio 8MB450 is an 8-inch 8 ohm LF driver. The validated T/S data includes Fs 75 Hz, Qts 1.05, Vas 18.2 L, Xmax 4.5 mm, sensitivity 90.5 dB, plus 108 cm³ Vd and 69 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 75Hz
- Qts
- 1.05
- Qes
- 1.09
- Qms
- 26.6
- Vas
- 18.2L
- Re
- 6.3Ω
- Le
- 0.25mH
Motor and cone
- BL
- 7.4T·m
- Sd
- 241cm²
- Mms
- 20g
- Xmax
- 4.5mm
- Vd †
- 108cm³
- Voice coil
- 50mm
Power and response
- Sensitivity †
- 90.5dB
- Manufacturer sensitivity
- 93.5dB
- Impedance
- 8Ω
- Range
- 75–7500Hz
- Crossover
- 120Hz
- EBP †
- 69 · Sealed or vented
Size and mounting
- Diameter
- 210mm
- Cutout
- 182mm
- Depth
- 92mm
- Weight
- 1.9kg
Other published values
- Cms
- 0.23mm/N
Other dimensions
- Mounting Depth
- 85
Sensitivity shows 90.5 dB, calculated from the T/S values. PRV Audio publishes 93.5 dB, 3.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else PRV Audio lists
LF · Primary · 8″
- BL
- 7.4T·m
- Fs
- 75Hz
- Le
- 0.25mH
- Re
- 6.3Ω
- Sd
- 241cm²
- Cms
- 0.23mm/N
- Mms
- 20g
- Qes
- 1.09
- Qms
- 26.6
- Qts
- 1.05
- SPL
- 90.5dB
- Vas
- 18.2L
- Xmax
- 4.5mm
- Impedance
- 8Ω
- Sensitivity
- 93.5dB
- Low limit
- 75Hz
- Calculated sensitivity †
- 90.5dB
- High limit
- 7500Hz
- Manufacturer sensitivity
- 93.5dB
- Voice coil
- 50mm
- Crossover
- 120Hz
- Weight
- 1.9kg
- Diameter
- 210mm
- Depth
- 92mm
- Mounting Depth
- 85
- Cutout
- 182mm
02
Compare
Same-size drivers, compared with the 8MB450. Clear differences are green when better and red when worse.
This driver8MB450
Best price
–
Fs
75 Hz
Qts
1.05
Vas
18.2 L
BL
7.4 T·m
Xmax
4.5 mm
Sensitivity
90.5 dB
Power
–
Dayton AudioDA175-8
£29.91Fs39 Hz −48%, better
Qts0.58 −45%, better
Vas16.3 L −10%, better
BL7.2 T·m –
Xmax4.3 mm −6%
Sensitivity83.4 dB −7.1, worse
Dayton AudioPCS8-4
£29.91Fs43 Hz −42%, better
Qts0.49 −53%, better
Vas20.5 L +13%, worse
BL8.4 T·m +14%, better
Xmax5 mm +11%, better
Sensitivity86.7 dB −3.8, worse
FaitalPRO8FE200
£33.72Fs80 Hz +7%
Qts0.63 −40%, better
Vas16.1 L −11%, better
BL8.2 T·m +11%, better
Xmax4.7 mm +4%
Sensitivity93 dB +2.5, better
Dayton AudioSIG180-4
£41.13Fs41 Hz −46%, better
Qts0.38 −64%, better
Vas23.2 L +28%, worse
BL6.6 T·m −10%, worse
Xmax5 mm +11%, better
Sensitivity87.8 dB −2.7, worse
Sica8 H 1.5 CS
£44.29Fs51 Hz −32%, better
Qts0.72 −31%, better
Vas26.9 L +48%, worse
BL7.0 T·m −5%
Xmax4 mm −11%, worse
Sensitivity87.7 dB −2.8, worse
REDCATT8FHW-1
£51.91Fs41 Hz −45%, better
Qts0.60 −43%, better
Vas19.6 L +8%
BL7.9 T·m +7%
Xmax8.7 mm +93%, better
Sensitivity84.6 dB −5.9, worse
PRV Audio8FR250
£52.71Fs76 Hz –
Qts1.02 –
Vas21.2 L +17%, worse
BL6.5 T·m −11%, worse
Xmax3.5 mm −22%, worse
Sensitivity91.2 dB +0.7
EminenceALPHA-8A
£54.66Fs73 Hz –
Qts0.59 −44%, better
Vas17.7 L –
BL7.8 T·m +6%
Xmax3.2 mm −29%, worse
Sensitivity92.1 dB +1.6
Scanspeak18W/8434G00
£57.57Fs50 Hz −33%, better
Qts0.43 −59%, better
Vas19.5 L +7%
BL7.2 T·m –
Xmax4.2 mm −7%
Sensitivity89.3 dB −1.2
CIAREHW172
£62.80Fs46 Hz −38%, better
Qts0.37 −65%, better
Vas20 L +10%, worse
BL7.6 T·m –
Xmax4.5 mm –
Sensitivity88.4 dB −2.1, worse
PeerlessSLS-P830667
£66.94Fs46 Hz −38%, better
Qts0.75 −29%, better
Vas19 L +5%
BL8.3 T·m +13%, better
Xmax11.1 mm +147%, better
Sensitivity85.5 dB −5, worse
CIARECME200
£67.27Fs76 Hz –
Qts0.37 −65%, better
Vas18 L –
BL7.3 T·m –
Xmax3.5 mm −22%, worse
Sensitivity95.1 dB +4.6, better
PRV Audio69MR500-4
£68.20Fs149 Hz +99%, worse
Qts1.12 +7%
Vas5.2 L −71%, better
BL5.9 T·m −20%, worse
Xmax3.3 mm −28%, worse
Sensitivity93.6 dB +3.1, better
Scanspeak18W/4434G00
£72.01Fs47 Hz −37%, better
Qts0.35 −67%, better
Vas20.7 L +14%, worse
BL6 T·m −19%, worse
Xmax4.3 mm −4%
Sensitivity89.7 dB −0.8
Sica8 FE 2 CP
£104.62Fs67 Hz −10%, better
Qts0.32 −70%, better
Vas16.9 L −7%
BL12.3 T·m +66%, better
Xmax4.5 mm –
Sensitivity93.4 dB +2.9, better
WavecorWF182BD13
£157.84Fs38 Hz −49%, better
Qts0.26 −75%, better
Vas20.8 L +14%, worse
BL6.9 T·m −6%
Xmax5.5 mm +22%, better
Sensitivity88.3 dB −2.2, worse
PRV Audio8MB450-4
No current priceFs77 Hz –
Qts0.88 −16%, better
Vas17.0 L −6%
BL6.2 T·m −16%, worse
Xmax4.5 mm –
Sensitivity91.2 dB +0.7
PRV Audio8MB500-4
No current priceFs72 Hz −4%
Qts0.64 −39%, better
Vas17.3 L −5%
BL7.5 T·m –
Xmax4.5 mm –
Sensitivity91.9 dB +1.4
PRV Audio8MB500
No current priceFs69 Hz −7%
Qts0.75 −29%, better
Vas19.4 L +7%
BL8.7 T·m +18%, better
Xmax4.5 mm –
Sensitivity91.2 dB +0.7
CIARECME201
No current priceFs60 Hz −20%, better
Qts0.40 −62%, better
Vas21.5 L +18%, worse
BL7.5 T·m –
Xmax4.5 mm –
Sensitivity92.3 dB +1.8
JensenP-A-JC8-30FA-8
No current priceFs126 Hz +69%, worse
Qts1.01 −4%
Vas10.8 L −41%, better
BL6.6 T·m −11%, worse
Xmax0.5 mm −89%, worse
Sensitivity94 dB +3.5, better
PRV Audio8MR360
No current priceFs91 Hz +21%, worse
Qts0.56 −47%, better
Vas18.5 L –
BL8.3 T·m +13%, better
Xmax4 mm −11%, worse
Sensitivity95.8 dB +5.3, better
PRV AudioD4
No current priceFs45 Hz −40%, better
Qts0.92 −12%, better
Vas8.4 L −54%, better
BL6.8 T·m −8%
Xmax14 mm +211%, better
Sensitivity80.9 dB −9.6, worse
PRV Audio8MR400
No current priceFs78 Hz +5%
Qts0.52 −50%, better
Vas20.2 L +11%, worse
BL8.2 T·m +11%, better
Xmax4 mm −11%, worse
Sensitivity94.4 dB +3.9, better
PRV Audio8MR360-4
No current priceFs98 Hz +31%, worse
Qts0.51 −51%, better
Vas14.4 L −21%, better
BL6.8 T·m −7%
Xmax4 mm −11%, worse
Sensitivity96.1 dB +5.6, better
PRV AudioMT8MB600CF-NDY-4
No current priceFs65 Hz −14%, better
Qts0.37 −65%, better
Vas18.8 L +3%
BL9.3 T·m +26%, better
Xmax4.8 mm +6%
Sensitivity93.3 dB +2.8, better
CIARECMI200ND
No current priceFs80 Hz +7%
Qts0.37 −65%, better
Vas12.5 L −31%, better
BL8.8 T·m +19%, better
Xmax4.5 mm –
Sensitivity94.2 dB +3.7, better
PRV Audio8MR450CF-4
No current priceFs83 Hz +11%, worse
Qts0.71 −32%, better
Vas17.5 L −4%
BL6.1 T·m −18%, worse
Xmax3.5 mm −22%, worse
Sensitivity93.4 dB +2.9, better
Dayton AudioPM220-8
No current priceFs49 Hz −34%, better
Qts0.38 −64%, better
Vas63 L +247%, worse
BL7.2 T·m –
Xmax4.6 mm –
Sensitivity94.6 dB +4.1, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.5 out of 52 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 | £36.80 | Back order | Visit shop at SoundImports |