GRS8PF-8
£16.29 · 58% less, betterFs50 Hz +35%, worse
Qts0.98 +40%, worse
Vas28.9 L −46%, better
BL6.5 T·m –
Xmax3 mm –
Sensitivity86.7 dB –
8-inch LF driver · SPM series · 26 mm voice coil · 70 W
Monacor SPM-205/8 8Ω
8 Ω · 3–5000 Hz
£38.40
SteadyWilmslow Audio · All 2 offers
- Fs
- 37Hz
- Xmax
- 3mm
- SPL
- 87dB
- Pe
- 70W
- BL
- 6.5T·m
- Vd
- 63cm³
- Qts
- 0.70
- Vas
- 54L
Monacor SPM-205/8 is an 8-inch 8 ohm LF driver rated at 70 W RMS. The validated T/S data includes Fs 37 Hz, Qts 0.70, Vas 54 L, Xmax 3 mm, sensitivity 86.8 dB, plus 63 cm³ Vd and 40 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 £38.40.
The published T/S values agree with each other
Thiele/Small
- Fs
- 37Hz
- Qts
- 0.70
- Qes
- 0.92
- Qms
- 3.0
- Vas
- 54L
- Re
- 7.2Ω
- Le
- 0.70mH
Motor and cone
- BL
- 6.5T·m
- Sd
- 210cm²
- Mms
- 22g
- Xmax
- 3mm
- Vd †
- 63cm³
- Voice coil
- 26mm
Power and response
- Sensitivity †
- 86.8dB
- Manufacturer sensitivity
- 89dB
- Power
- 70W
- Impedance
- 8Ω
- Range
- 3–5000Hz
- EBP †
- 40 · Leans sealed
Size and mounting
- Diameter
- 200mm
- Cutout
- 183mm
- Depth
- 88mm
- Weight
- 1.4kg
Other published values
- Cms
- 0.75mm/N
- Power Peak
- 150
Other dimensions
- Mounting Depth
- 80
Sensitivity shows 86.8 dB, calculated from the T/S values. Monacor publishes 89.0 dB, 2.2 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Monacor lists
MF · Primary · 8″
- BL
- 6.5T·m
- Fs
- 37Hz
- Le
- 0.70mH
- Re
- 7.2Ω
- Sd
- 210cm²
- Cms
- 0.75mm/N
- Mms
- 22g
- Qes
- 0.92
- Qms
- 3.0
- Qts
- 0.70
- SPL
- 86.8dB
- Vas
- 54L
- Xmax
- 3mm
- Power
- 70W
- Impedance
- 8Ω
- Power Peak
- 150
- Sensitivity
- 89dB
- Low limit
- 3Hz
- Calculated sensitivity †
- 86.8dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 89dB
- Voice coil
- 26mm
- Weight
- 1.4kg
- Diameter
- 200mm
- Depth
- 88mm
- Mounting Depth
- 80
- Cutout
- 183mm
02
Compare
Same-size drivers, compared with the SPM-205/8. Clear differences are green when better and red when worse.
This driverSPM-205/8
Best price
£38.40
Fs
37 Hz
Qts
0.70
Vas
54 L
BL
6.5 T·m
Xmax
3 mm
Sensitivity
86.8 dB
Power
70 W
GRS8FR-8
£17.54 · 54% less, betterFs45 Hz +22%, worse
Qts0.56 −20%, better
Vas37.0 L −31%, better
BL8.5 T·m +31%, better
Xmax3 mm –
Sensitivity89.3 dB +2.5, better
VisatonWS 20 E
£25.91 · 33% less, betterFs47 Hz +27%, worse
Qts1.23 +76%, worse
Vas44 L −19%, better
BL5.5 T·m −15%, worse
Xmax3 mm –
Sensitivity86.6 dB –
VisatonW 200
£27.59 · 28% less, betterFs46 Hz +24%, worse
Qts0.63 −10%
Vas51 L −6%
BL5.9 T·m −9%
Xmax2 mm −33%, worse
Sensitivity90 dB +3.2, better
BishopSoundBSP8
£34.00 · 11% less, betterFs107 Hz +189%, worse
Qts0.74 +5%
Vas6.4 L −88%, better
BL11.0 T·m +70%, better
Xmax3.5 mm +17%, better
Sensitivity92.1 dB +5.3, better
CIAREHW210
£36.00 · 6% less, betterFs41 Hz +11%, worse
Qts0.84 +20%, worse
Vas57.6 L +7%
BL5.2 T·m −20%, worse
Xmax5.3 mm +77%, better
Sensitivity87.8 dB +1
MonacorSP-202E
£41.78 · 9% more, worseFs51 Hz +38%, worse
Qts0.69 –
Vas39 L −28%, better
BL4.9 T·m −25%, worse
Xmax2.5 mm −17%, worse
Sensitivity90.1 dB +3.3, better
MonacorSPX-200WP
£41.87 · 9% more, worseFs36 Hz –
Qts0.59 −16%, better
Vas60.5 L +12%, worse
BL6.8 T·m +4%
Xmax2 mm −33%, worse
Sensitivity88.1 dB +1.3
Sica8 H 1.5 CS
£44.29 · 15% more, worseFs51 Hz +36%, worse
Qts0.72 –
Vas26.9 L −50%, better
BL7.0 T·m +8%
Xmax4 mm +33%, better
Sensitivity87.7 dB +0.9
REDCATT82FHM
£49.82 · 30% more, worseFs42 Hz +14%, worse
Qts0.61 −13%, better
Vas33.6 L −38%, better
BL7.6 T·m +16%, better
Xmax5.5 mm +82%, better
Sensitivity87.2 dB –
PRV Audio8FR250
£52.71 · 37% more, worseFs76 Hz +104%, worse
Qts1.02 +46%, worse
Vas21.2 L −61%, better
BL6.5 T·m –
Xmax3.5 mm +17%, better
Sensitivity91.2 dB +4.4, better
EminenceALPHA-8A
£54.66 · 42% more, worseFs73 Hz +97%, worse
Qts0.59 −16%, better
Vas17.7 L −67%, better
BL7.8 T·m +20%, better
Xmax3.2 mm +7%
Sensitivity92.1 dB +5.3, better
Tang BandW8-2145
£150.67 · 292% more, worseFs40 Hz +8%
Qts0.45 −36%, better
Vas67.7 L +25%, worse
BL6.6 T·m –
Xmax3 mm –
Sensitivity90.5 dB +3.7, better
VisatonB 200
£158.23 · 312% more, worseFs40 Hz +8%
Qts0.75 +7%
Vas102 L +89%, worse
BL3.9 T·m −40%, worse
Xmax3.5 mm +17%, better
Sensitivity91 dB +4.2, better
SB AcousticsMW19P-4
£165.40 · 331% more, worseFs29 Hz −22%, better
Qts0.24 −66%, better
Vas61 L +13%, worse
BL6.5 T·m –
Xmax6.8 mm +127%, better
Sensitivity89.6 dB +2.8, better
Scanspeak18M/8631T00
£192.54 · 401% more, worseFs65 Hz +76%, worse
Qts0.71 –
Vas14 L −74%, better
BL6.5 T·m –
Xmax3 mm –
Sensitivity88.7 dB +1.9
Scanspeak18M/4631T00
£192.54 · 401% more, worseFs65 Hz +76%, worse
Qts0.60 −14%, better
Vas14 L −74%, better
BL5.6 T·m −14%, worse
Xmax3 mm –
Sensitivity89.6 dB +2.8, better
SEASH1597-08 FA22RCZ
£197.94 · 415% more, worseFs30 Hz −19%, better
Qts0.35 −50%, better
Vas134 L +148%, worse
BL6.4 T·m –
Xmax3 mm –
Sensitivity91.8 dB +5, better
SB AcousticsMW19TX-4
£283.85 · 639% more, worseFs32 Hz −14%, better
Qts0.27 −61%, better
Vas53.2 L –
BL6.3 T·m −3%
Xmax6.8 mm +127%, better
Sensitivity90 dB +3.2, better
PRV Audio8MR400B-4
No current priceFs93 Hz +151%, worse
Qts0.74 +6%
Vas15.7 L −71%, better
BL6.3 T·m –
Xmax3.3 mm +8%
Sensitivity94.2 dB +7.4, better
SB AcousticsSB20PFCS30-7
No current priceFs39 Hz +5%
Qts0.66 −6%
Vas59.5 L +10%, worse
BL5.6 T·m −14%, worse
Xmax5.5 mm +83%, better
Sensitivity88.6 dB +1.8
PRV Audio69MR500-PHP-4
No current priceFs92 Hz +148%, worse
Qts0.65 −7%
Vas15.2 L −72%, better
BL6.8 T·m +5%
Xmax2.9 mm −4%
Sensitivity94.4 dB +7.6, better
Supravox215-2000 MK2
No current priceFs70 Hz +89%, worse
Qts0.84 +20%, worse
Vas30 L −44%, better
BL5.2 T·m −19%, worse
Xmax2.9 mm −3%
Sensitivity92.5 dB +5.7, better
PRV Audio8MR450CF-4
No current priceFs83 Hz +124%, worse
Qts0.71 –
Vas17.5 L −68%, better
BL6.1 T·m −7%
Xmax3.5 mm +17%, better
Sensitivity93.4 dB +6.6, better
MonacorSPM-205/4
No current priceFs37 Hz –
Qts0.55 −21%, better
Vas72 L +33%, worse
BL4.8 T·m −27%, worse
Xmax3 mm –
Sensitivity89.3 dB +2.5, better
MonacorSP-200X
No current priceFs50 Hz +35%, worse
Qts0.52 −26%, better
Vas48 L −11%, better
BL6.1 T·m −6%
Xmax1.6 mm −47%, worse
Sensitivity91.4 dB +4.6, better
PRV Audio8MR500-NDY-4
No current priceFs79 Hz +112%, worse
Qts0.54 −23%, better
Vas24.3 L −55%, better
BL6.0 T·m −7%
Xmax3 mm –
Sensitivity95.2 dB +8.4, better
Cube AudioF8 MAGUS
No current priceFs40 Hz +8%
Qts0.37 −47%, better
Vas53 L –
BL9 T·m +38%, better
Xmax3 mm –
Sensitivity91.7 dB +4.9, better
PRV Audio8MB450-4
No current priceFs77 Hz +107%, worse
Qts0.88 +26%, worse
Vas17.0 L −68%, better
BL6.2 T·m −5%
Xmax4.5 mm +50%, better
Sensitivity91.2 dB +4.4, better
CIARECW202
No current priceFs40 Hz +8%
Qts0.41 −41%, better
Vas48 L −11%, better
BL6.5 T·m –
Xmax6.5 mm +117%, better
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
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Wilmslow Audio | £38.40, the lowest price | Stock not listed | Visit shop at Wilmslow Audio | |
Audiophonics Import VAT and duty may apply | £34.25 | Available on order | Visit shop at Audiophonics |
Best price over time
Tracked since 23 Jul