GRS8FR-8
£17.54 · 58% less, betterFs45 Hz +25%, worse
Qts0.56 −5%
Vas37.0 L −39%, better
BL8.5 T·m +25%, better
Xmax3 mm +50%, better
Sensitivity89.3 dB +1.2
8-inch LF driver · SPX series · 25 mm voice coil · 50 W
Monacor SPX-200WP 8Ω
8 Ω · 3–18000 Hz
£41.87
15%LTT · Ships from Germany · All 4 offers
- Fs
- 36Hz
- Xmax
- 2mm
- SPL
- 88dB
- Pe
- 50W
- BL
- 6.8T·m
- Vd
- 43cm³
- Qts
- 0.59
- Vas
- 61L
Monacor SPX-200WP is an 8-inch 8 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 36 Hz, Qts 0.59, Vas 60.5 L, Xmax 2 mm, sensitivity 88.1 dB, plus 43 cm³ Vd and 52 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 £41.87.
The published T/S values agree with each other
Thiele/Small
- Fs
- 36Hz
- Qts
- 0.59
- Qes
- 0.69
- Qms
- 4.2
- Vas
- 60.5L
- Re
- 7.6Ω
- Le
- 0.35mH
Motor and cone
- BL
- 6.8T·m
- Sd
- 213cm²
- Mms
- 20g
- Xmax
- 2mm
- Vd †
- 43cm³
- Voice coil
- 25mm
Power and response
- Sensitivity †
- 88.1dB
- Manufacturer sensitivity
- 89dB
- Power
- 50W
- Impedance
- 8Ω
- Range
- 3–18000Hz
- EBP †
- 52 · Sealed or vented
Size and mounting
- Diameter
- 203mm
- Cutout
- 180mm
- Depth
- 99mm
- Weight
- 1.3kg
Other published values
- Cms
- 0.95mm/N
- Power Peak
- 100
Other dimensions
- Mounting Depth
- 78.5
† Calculated by bits from the published values
What this validation status means
Everything else Monacor lists
LF · Primary · 8″
- BL
- 6.8T·m
- Fs
- 36Hz
- Le
- 0.35mH
- Re
- 7.6Ω
- Sd
- 213cm²
- Cms
- 0.95mm/N
- Mms
- 20g
- Qes
- 0.69
- Qms
- 4.2
- Qts
- 0.59
- SPL
- 88.1dB
- Vas
- 60.5L
- Xmax
- 2mm
- Power
- 50W
- Impedance
- 8Ω
- Power Peak
- 100
- Sensitivity
- 89dB
- Low limit
- 3Hz
- Calculated sensitivity †
- 88.1dB
- High limit
- 18000Hz
- Manufacturer sensitivity
- 89dB
- Voice coil
- 25mm
- Weight
- 1.3kg
- Diameter
- 203mm
- Depth
- 99mm
- Mounting Depth
- 78.5
- Cutout
- 180mm
02
Compare
Same-size drivers, compared with the SPX-200WP. Clear differences are green when better and red when worse.
This driverSPX-200WP
Best price
£41.87
Fs
36 Hz
Qts
0.59
Vas
60.5 L
BL
6.8 T·m
Xmax
2 mm
Sensitivity
88.1 dB
Power
50 W
VisatonW 200
£26.00 · 38% less, betterFs46 Hz +28%, worse
Qts0.63 +7%
Vas51 L −16%, better
BL5.9 T·m −13%, worse
Xmax2 mm –
Sensitivity90 dB +1.9
Dayton AudioDA175-8
£29.91 · 29% less, betterFs39 Hz +8%
Qts0.58 –
Vas16.3 L −73%, better
BL7.2 T·m +6%
Xmax4.3 mm +113%, better
Sensitivity83.4 dB −4.7, worse
VisatonBG 20
£30.00 · 28% less, betterFs38 Hz +6%
Qts0.44 −25%, better
Vas110 L +82%, worse
BL6.1 T·m −10%, worse
Xmax2 mm –
Sensitivity92.8 dB +4.7, better
PRV Audio8MR450A
£33.60 · 20% less, betterFs65 Hz +81%, worse
Qts0.55 −7%
Vas34.9 L −42%, better
BL7.6 T·m +12%, better
Xmax4 mm +100%, better
Sensitivity94.3 dB +6.2, better
FaitalPRO8FE200
£33.72 · 19% less, betterFs80 Hz +122%, worse
Qts0.63 +7%
Vas16.1 L −73%, better
BL8.2 T·m +21%, better
Xmax4.7 mm +134%, better
Sensitivity93 dB +4.9, better
SB AcousticsSB20FRPC30-8
£37.67 · 10% less, betterFs39 Hz +9%
Qts0.45 −24%, better
Vas66.3 L +10%
BL7.2 T·m +5%
Xmax4.1 mm +105%, better
Sensitivity91.4 dB +3.3, better
MonacorSPM-205/8
£38.40 · 8% less, betterFs37 Hz –
Qts0.70 +19%, worse
Vas54 L −11%, better
BL6.5 T·m −4%
Xmax3 mm +50%, better
Sensitivity86.8 dB −1.3
REDCATT82FHM
£49.82 · 19% more, worseFs42 Hz +17%, worse
Qts0.61 +3%
Vas33.6 L −44%, better
BL7.6 T·m +11%, better
Xmax5.5 mm +173%, better
Sensitivity87.2 dB −0.9
REDCATT8FHW-1
£51.91 · 24% more, worseFs41 Hz +14%, worse
Qts0.60 –
Vas19.6 L −68%, better
BL7.9 T·m +16%, better
Xmax8.7 mm +335%, better
Sensitivity84.6 dB −3.5, worse
EminenceALPHA-8A
£54.66 · 31% more, worseFs73 Hz +103%, worse
Qts0.59 –
Vas17.7 L −71%, better
BL7.8 T·m +15%, better
Xmax3.2 mm +60%, better
Sensitivity92.1 dB +4, better
Dayton AudioRSS210HF-4
£144.69 · 246% more, worseFs30 Hz −18%, better
Qts0.57 −3%
Vas23.7 L −61%, better
BL8.1 T·m +20%, better
Xmax9 mm +350%, better
Sensitivity81.5 dB −6.6, worse
Tang BandW8-2145
£150.67 · 260% more, worseFs40 Hz +11%, worse
Qts0.45 −24%, better
Vas67.7 L +12%, worse
BL6.6 T·m –
Xmax3 mm +50%, better
Sensitivity90.5 dB +2.4, better
SB AcousticsMW19P-4
£165.40 · 295% more, worseFs29 Hz −19%, better
Qts0.24 −59%, better
Vas61 L –
BL6.5 T·m −4%
Xmax6.8 mm +240%, better
Sensitivity89.6 dB +1.5
Scanspeak18W/8531G00
£168.81 · 303% more, worseFs28 Hz −22%, better
Qts0.36 −39%, better
Vas58.2 L −4%
BL6.8 T·m –
Xmax6.5 mm +225%, better
Sensitivity87.2 dB −0.9
Scanspeak18M/4631T00
£192.54 · 360% more, worseFs65 Hz +81%, worse
Qts0.60 –
Vas14 L −77%, better
BL5.6 T·m −18%, worse
Xmax3 mm +50%, better
Sensitivity89.6 dB +1.5
Tang BandW8-2314
£293.02 · 600% more, worseFs38 Hz +6%
Qts0.46 −22%, better
Vas49.5 L −18%, better
BL6.1 T·m −10%, worse
Xmax6 mm +200%, better
Sensitivity89 dB +0.9
MonacorSP-200X
No current priceFs50 Hz +39%, worse
Qts0.52 −12%, better
Vas48 L −21%, better
BL6.1 T·m −10%, worse
Xmax1.6 mm −20%, worse
Sensitivity91.4 dB +3.3, better
HiViD8.4MKII
No current priceFs36 Hz –
Qts0.56 −5%
Vas40 L −34%, better
BL7.1 T·m +5%
Xmax5 mm +150%, better
Sensitivity86.9 dB −1.2
SB AcousticsSB20PFCS30-7
No current priceFs39 Hz +8%
Qts0.66 +12%, worse
Vas59.5 L –
BL5.6 T·m −18%, worse
Xmax5.5 mm +175%, better
Sensitivity88.6 dB +0.5
PRV Audio69MR500-PHP-4
No current priceFs92 Hz +155%, worse
Qts0.65 +10%, worse
Vas15.2 L −75%, better
BL6.8 T·m –
Xmax2.9 mm +44%, better
Sensitivity94.4 dB +6.3, better
MonacorSPM-205/4
No current priceFs37 Hz –
Qts0.55 −7%
Vas72 L +19%, worse
BL4.8 T·m −30%, worse
Xmax3 mm +50%, better
Sensitivity89.3 dB +1.2
Tang BandW8-1722B
No current priceFs35 Hz –
Qts0.51 −14%, better
Vas46.3 L −23%, better
BL6.2 T·m −8%
Xmax9 mm +350%, better
Sensitivity87.4 dB −0.7
Supravox215 RTF 64 BI-CÔNE
No current priceFs57 Hz +58%, worse
Qts0.46 −22%, better
Vas80 L +32%, worse
BL6.5 T·m −5%
Xmax2.3 mm +15%, better
Sensitivity96.5 dB +8.4, better
PRV Audio8MB500-4
No current priceFs72 Hz +100%, worse
Qts0.64 +8%
Vas17.3 L −71%, better
BL7.5 T·m +11%, better
Xmax4.5 mm +125%, better
Sensitivity91.9 dB +3.8, better
CIARECW200Z
No current priceFs49 Hz +36%, worse
Qts0.53 −10%, better
Vas38.3 L −37%, better
BL5.2 T·m −24%, worse
Xmax4 mm +100%, better
Sensitivity90.1 dB +2, better
HiViS8-98
No current priceFs34 Hz −6%
Qts0.44 −25%, better
Vas64.9 L +7%
BL6.6 T·m –
Xmax5.8 mm +190%, better
Sensitivity88.9 dB +0.8
HiViS8-98R
No current priceFs33 Hz −8%
Qts0.42 −29%, better
Vas65.2 L +8%
BL6.9 T·m –
Xmax6 mm +200%, better
Sensitivity89 dB +0.9
HiViD8.8MKII
No current priceFs39 Hz +8%
Qts0.57 −3%
Vas38.1 L −37%, better
BL9.6 T·m +41%, better
Xmax5 mm +150%, better
Sensitivity87.7 dB –
PRV Audio8MR500-NDY-4
No current priceFs79 Hz +118%, worse
Qts0.54 −8%
Vas24.3 L −60%, better
BL6.0 T·m −11%, worse
Xmax3 mm +50%, better
Sensitivity95.2 dB +7.1, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.0 out of 52 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 |
|---|---|---|---|---|
LTT Import VAT and duty may apply | £41.87, the lowest price | Stock not listed | Visit shop at LTT | |
Audiophonics Import VAT and duty may apply | £49.40 | 18% above the lowest price | In stock | Visit shop at Audiophonics |
SoundImports Import VAT and duty may apply | £50.20 | 20% above the lowest price | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr