Dayton AudioDA175-8
£29.91Fs39 Hz −49%, better
Qts0.58 −34%, better
Vas16.3 L −4%
BL7.2 T·m +16%, better
Xmax4.3 mm −6%
Sensitivity83.4 dB −7.8, worse
8-inch LF driver · 50 mm voice coil
PRV Audio 8MB450-4 4Ω
4 Ω · 75–7500 Hz
No price for delivery to the UK
- Fs
- 77Hz
- Xmax
- 4.5mm
- SPL
- 91dB
- Pe
- –
- BL
- 6.2T·m
- Vd
- 108cm³
- Qts
- 0.88
- Vas
- 17L
PRV Audio 8MB450-4 is an 8-inch 4 ohm LF driver. The validated T/S data includes Fs 77 Hz, Qts 0.88, Vas 17.0 L, Xmax 4.5 mm, sensitivity 91.2 dB, plus 108 cm³ Vd and 83 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
- 77Hz
- Qts
- 0.88
- Qes
- 0.92
- Qms
- 22.8
- Vas
- 17.0L
- Re
- 3.6Ω
- Le
- 0.17mH
Motor and cone
- BL
- 6.2T·m
- Sd
- 241cm²
- Mms
- 20g
- Xmax
- 4.5mm
- Vd †
- 108cm³
- Voice coil
- 50mm
Power and response
- Sensitivity †
- 91.2dB
- Manufacturer sensitivity
- 93.5dB
- Impedance
- 4Ω
- Range
- 75–7500Hz
- Crossover
- 120Hz
- EBP †
- 83 · Sealed or vented
Size and mounting
- Diameter
- 210mm
- Cutout
- 182mm
- Depth
- 92mm
- Weight
- 1.9kg
Other published values
- Cms
- 0.21mm/N
Other dimensions
- Mounting Depth
- 85
Sensitivity shows 91.2 dB, calculated from the T/S values. PRV Audio publishes 93.5 dB, 2.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else PRV Audio lists
LF · Primary · 8″
- BL
- 6.2T·m
- Fs
- 77Hz
- Le
- 0.17mH
- Re
- 3.6Ω
- Sd
- 241cm²
- Cms
- 0.21mm/N
- Mms
- 20g
- Qes
- 0.92
- Qms
- 22.8
- Qts
- 0.88
- SPL
- 91.2dB
- Vas
- 17.0L
- Xmax
- 4.5mm
- Impedance
- 4Ω
- Sensitivity
- 93.5dB
- Low limit
- 75Hz
- Calculated sensitivity †
- 91.2dB
- 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 8MB450-4. Clear differences are green when better and red when worse.
This driver8MB450-4
Best price
–
Fs
77 Hz
Qts
0.88
Vas
17.0 L
BL
6.2 T·m
Xmax
4.5 mm
Sensitivity
91.2 dB
Power
–
PeerlessFSL-0818R01-08
£33.66Fs74 Hz −3%
Qts0.37 −58%, better
Vas15.9 L −7%
BL11.3 T·m +83%, better
Xmax4.3 mm −3%
Sensitivity93.9 dB +2.7, better
FaitalPRO8FE200
£33.72Fs80 Hz +4%
Qts0.45 −49%, better
Vas15.8 L −7%
BL7 T·m +13%, better
Xmax4.6 mm –
Sensitivity94.4 dB +3.2, better
CIAREHW210
£36.00Fs41 Hz −46%, better
Qts0.84 −5%
Vas57.6 L +238%, worse
BL5.2 T·m −16%, worse
Xmax5.3 mm +18%, better
Sensitivity87.8 dB −3.4, worse
MonacorSPM-205/8
£38.40Fs37 Hz −52%, better
Qts0.70 −20%, better
Vas54 L +217%, worse
BL6.5 T·m +5%
Xmax3 mm −33%, worse
Sensitivity86.8 dB −4.4, worse
Dayton AudioSIG180-4
£41.13Fs41 Hz −47%, better
Qts0.38 −57%, better
Vas23.2 L +36%, worse
BL6.6 T·m +7%
Xmax5 mm +11%, better
Sensitivity87.8 dB −3.4, worse
Sica8 H 1.5 CS
£44.29Fs51 Hz −34%, better
Qts0.72 −18%, better
Vas26.9 L +58%, worse
BL7.0 T·m +13%, better
Xmax4 mm −11%, worse
Sensitivity87.7 dB −3.5, worse
PRV Audio8FR250
£52.71Fs76 Hz –
Qts1.02 +16%, worse
Vas21.2 L +25%, worse
BL6.5 T·m +5%
Xmax3.5 mm −22%, worse
Sensitivity91.2 dB –
Scanspeak18W/8434G00
£57.57Fs50 Hz −35%, better
Qts0.43 −51%, better
Vas19.5 L +15%, worse
BL7.2 T·m +16%, better
Xmax4.2 mm −7%
Sensitivity89.3 dB −1.9
CIAREHW172
£62.80Fs46 Hz −40%, better
Qts0.37 −58%, better
Vas20 L +18%, worse
BL7.6 T·m +23%, better
Xmax4.5 mm –
Sensitivity88.4 dB −2.8, worse
PeerlessSLS-P830667
£66.94Fs46 Hz −40%, better
Qts0.75 −15%, better
Vas19 L +12%, worse
BL8.3 T·m +35%, better
Xmax11.1 mm +147%, better
Sensitivity85.5 dB −5.7, worse
Scanspeak18W/4434G00
£72.01Fs47 Hz −39%, better
Qts0.35 −60%, better
Vas20.7 L +22%, worse
BL6 T·m −3%
Xmax4.3 mm −4%
Sensitivity89.7 dB −1.5
Sica8 FE 2 CP
£104.62Fs67 Hz −13%, better
Qts0.32 −64%, better
Vas16.9 L –
BL12.3 T·m +98%, better
Xmax4.5 mm –
Sensitivity93.4 dB +2.2, better
Scanspeak18M/8631T00
£192.54Fs65 Hz −15%, better
Qts0.71 −19%, better
Vas14 L −18%, better
BL6.5 T·m +5%
Xmax3 mm −33%, worse
Sensitivity88.7 dB −2.5, worse
Scanspeak18M/4631T00
£192.54Fs65 Hz −15%, better
Qts0.60 −32%, better
Vas14 L −18%, better
BL5.6 T·m −10%
Xmax3 mm −33%, worse
Sensitivity89.6 dB −1.6
Dayton AudioPS220-8
£200.12Fs46 Hz −39%, better
Qts0.38 −57%, better
Vas90.2 L +430%, worse
BL6.2 T·m –
Xmax4.8 mm +7%
Sensitivity95.6 dB +4.4, better
PRV Audio8MB450
No current priceFs75 Hz –
Qts1.05 +19%, worse
Vas18.2 L +7%
BL7.4 T·m +19%, better
Xmax4.5 mm –
Sensitivity90.5 dB −0.7
Eminence820H
No current priceFs144 Hz +88%, worse
Qts0.88 –
Vas9.6 L −43%, better
BL5.7 T·m −7%
Xmax1.6 mm −65%, worse
Sensitivity97 dB +5.8, better
PRV Audio8MR450CF-4
No current priceFs83 Hz +8%
Qts0.71 −19%, better
Vas17.5 L –
BL6.1 T·m –
Xmax3.5 mm −22%, worse
Sensitivity93.4 dB +2.2, better
PRV Audio8MR400B-4
No current priceFs93 Hz +21%, worse
Qts0.74 −16%, better
Vas15.7 L −8%
BL6.3 T·m –
Xmax3.3 mm −28%, worse
Sensitivity94.2 dB +3, better
PRV Audio8MB500
No current priceFs69 Hz −9%
Qts0.75 −15%, better
Vas19.4 L +14%, worse
BL8.7 T·m +40%, better
Xmax4.5 mm –
Sensitivity91.2 dB –
PRV Audio8MB500-4
No current priceFs72 Hz −6%
Qts0.64 −27%, better
Vas17.3 L –
BL7.5 T·m +21%, better
Xmax4.5 mm –
Sensitivity91.9 dB +0.7
PRV AudioD4
No current priceFs45 Hz −41%, better
Qts0.92 +5%
Vas8.4 L −50%, better
BL6.8 T·m +10%
Xmax14 mm +211%, better
Sensitivity80.9 dB −10.3, worse
Supravox215-2000 MK2
No current priceFs70 Hz −9%
Qts0.84 −5%
Vas30 L +76%, worse
BL5.2 T·m −15%, worse
Xmax2.9 mm −36%, worse
Sensitivity92.5 dB +1.3
PRV Audio8MR360-4
No current priceFs98 Hz +27%, worse
Qts0.51 −42%, better
Vas14.4 L −15%, better
BL6.8 T·m +11%, better
Xmax4 mm −11%, worse
Sensitivity96.1 dB +4.9, better
CIARECME201
No current priceFs60 Hz −22%, better
Qts0.40 −55%, better
Vas21.5 L +26%, worse
BL7.5 T·m +21%, better
Xmax4.5 mm –
Sensitivity92.3 dB +1.1
PRV Audio69MR500-PHP-4
No current priceFs92 Hz +20%, worse
Qts0.65 −26%, better
Vas15.2 L −11%, better
BL6.8 T·m +10%
Xmax2.9 mm −36%, worse
Sensitivity94.4 dB +3.2, better
Tang BandW8-2282
No current priceFs35 Hz −54%, better
Qts0.66 −25%, better
Vas12.9 L −24%, better
BL10.8 T·m +74%, better
Xmax5 mm +11%, better
Sensitivity80.7 dB −10.5, worse
No photo
PHL Audio2040
No current priceFs119 Hz +55%, worse
Qts0.76 −14%, better
Vas9.3 L −45%, better
BL8.5 T·m +37%, better
Xmax2 mm −56%, worse
Sensitivity94.4 dB +3.2, better
No photo
PHL Audio2040NDU
No current priceFs119 Hz +55%, worse
Qts0.76 −14%, better
Vas9.3 L −45%, better
BL8.5 T·m +37%, better
Xmax2 mm −56%, worse
Sensitivity94.4 dB +3.2, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Parts Express4.9 out of 538 ratings · Checked 24 Oct 2026Read reviews on Parts Express
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