FaitalPRO2FE22
£15.79 · 54% less, betterFs125 Hz −20%, better
Qts0.38 −10%
Vas0.5 L +150%, worse
BL5.2 T·m +16%, better
Xmax2.9 mm +480%, better
Sensitivity85.6 dB +1.3
2-inch LF driver · SPX series · 25 mm voice coil · 15 W
Monacor SPX-20M 8Ω
8 Ω · 3–22000 Hz
£34.33
20%LTT · Ships from Germany · All 3 offers
- Fs
- 157Hz
- Xmax
- 0.5mm
- SPL
- 84dB
- Pe
- 15W
- BL
- 4.5T·m
- Vd
- 0.65cm³
- Qts
- 0.42
- Vas
- 0.2L
Monacor SPX-20M is a 2-inch 8 ohm LF driver rated at 15 W RMS. The validated T/S data includes Fs 157 Hz, Qts 0.42, Vas 0.2 L, Xmax 0.5 mm, sensitivity 84.3 dB, plus 1 cm³ Vd and 341 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 £34.33.
The published T/S values agree with each other
Thiele/Small
- Fs
- 157Hz
- Qts
- 0.42
- Qes
- 0.46
- Qms
- 4.5
- Vas
- 0.2L
- Re
- 6.9Ω
- Le
- 0.13mH
Motor and cone
- BL
- 4.5T·m
- Sd
- 13cm²
- Mms
- 1g
- Xmax
- 0.5mm
- Vd †
- 0.65cm³
- Voice coil
- 25mm
Power and response
- Sensitivity †
- 84.3dB
- Manufacturer sensitivity
- 87dB
- Power
- 15W
- Impedance
- 8Ω
- Range
- 3–22000Hz
- EBP †
- 341 · Leans vented
Size and mounting
- Diameter
- 57mm
- Cutout
- 51.5mm
- Depth
- 37.5mm
- Weight
- 0.17kg
Other published values
- Cms
- 0.76mm/N
- Power Peak
- 30
Other dimensions
- Mounting Depth
- 33.5
Sensitivity shows 84.3 dB, calculated from the T/S values. Monacor publishes 87.0 dB, 2.7 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Monacor lists
LF · Primary · 2″
- BL
- 4.5T·m
- Fs
- 157Hz
- Le
- 0.13mH
- Re
- 6.9Ω
- Sd
- 13cm²
- Cms
- 0.76mm/N
- Mms
- 1g
- Qes
- 0.46
- Qms
- 4.5
- Qts
- 0.42
- SPL
- 84.3dB
- Vas
- 0.2L
- Xmax
- 0.5mm
- Power
- 15W
- Impedance
- 8Ω
- Power Peak
- 30
- Sensitivity
- 87dB
- Low limit
- 3Hz
- Calculated sensitivity †
- 84.3dB
- High limit
- 22000Hz
- Manufacturer sensitivity
- 87dB
- Voice coil
- 25mm
- Weight
- 0.17kg
- Diameter
- 57mm
- Depth
- 37.5mm
- Mounting Depth
- 33.5
- Cutout
- 51.5mm
02
Compare
Same-size drivers, compared with the SPX-20M. Clear differences are green when better and red when worse.
This driverSPX-20M
Best price
£34.33
Fs
157 Hz
Qts
0.42
Vas
0.2 L
BL
4.5 T·m
Xmax
0.5 mm
Sensitivity
84.3 dB
Power
15 W
Dayton AudioDS90-8
£16.44 · 52% less, betterFs81 Hz −48%, better
Qts0.43 –
Vas1.3 L +555%, worse
BL4.8 T·m +6%
Xmax2.5 mm +400%, better
Sensitivity83.3 dB −1
Dayton AudioDMA58-4
£16.70 · 51% less, betterFs166 Hz +5%
Qts0.46 +10%
Vas0.14 L −29%, better
BL3.7 T·m −18%, worse
Xmax2 mm +300%, better
Sensitivity82.6 dB −1.7
FaitalPRO3FE22
£18.26 · 47% less, betterFs110 Hz −30%, better
Qts0.47 +12%, worse
Vas1.3 L +550%, worse
BL4.5 T·m –
Xmax1.8 mm +266%, better
Sensitivity87.3 dB +3, better
Dayton AudioDSA90-8
£20.18 · 41% less, betterFs67 Hz −58%, better
Qts0.37 −12%, better
Vas2.3 L +1035%, worse
BL4.6 T·m –
Xmax2.5 mm +400%, better
Sensitivity83.8 dB −0.5
Tang BandW1-1070SH
£29.31 · 15% less, betterFs180 Hz +15%, worse
Qts0.42 –
Vas0.09 L −55%, better
BL3.2 T·m −28%, worse
Xmax2 mm +300%, better
Sensitivity82.1 dB −2.2, worse
Tang BandW3-881SJF
£30.14 · 12% less, betterFs100 Hz −36%, better
Qts0.39 −7%
Vas1.9 L +845%, worse
BL4.5 T·m –
Xmax0.5 mm –
Sensitivity88.7 dB +4.4, better
LavoceFSN030.72
£30.67 · 11% less, betterFs127 Hz −19%, better
Qts0.41 –
Vas1.1 L +460%, worse
BL5.0 T·m +11%, better
Xmax2.1 mm +320%, better
Sensitivity89.3 dB +5, better
Tang BandW3-2141
£46.05 · 34% more, worseFs75 Hz −52%, better
Qts0.39 −7%
Vas3.3 L +1550%, worse
BL3.6 T·m −19%, worse
Xmax1.6 mm +220%, better
Sensitivity86.8 dB +2.5, better
Tang BandW3-1231SN
£46.05 · 34% more, worseFs100 Hz −36%, better
Qts0.34 −19%, better
Vas1.4 L +605%, worse
BL4.4 T·m –
Xmax1.3 mm +150%, better
Sensitivity87.2 dB +2.9, better
MonacorSPH-30X/8SW
£57.31 · 67% more, worseFs105 Hz −33%, better
Qts0.42 –
Vas1.3 L +550%, worse
BL4.5 T·m –
Xmax2 mm +300%, better
Sensitivity86.9 dB +2.6, better
Tang BandW3-1335SB
£61.96 · 80% more, worseFs100 Hz −36%, better
Qts0.34 −19%, better
Vas1.2 L +510%, worse
BL5.2 T·m +15%, better
Xmax0.5 mm –
Sensitivity86.3 dB +2, better
MorelCAW 428
£91.27 · 166% more, worseFs74 Hz −53%, better
Qts0.38 −10%
Vas4.5 L +2150%, worse
BL5 T·m +11%, better
Xmax4 mm +700%, better
Sensitivity88 dB +3.7, better
WavecorSW070WA01
£95.79 · 179% more, worseFs84 Hz −46%, better
Qts0.39 −7%
Vas0.7 L +240%, worse
BL3.9 T·m −14%, worse
Xmax2.5 mm +400%, better
Sensitivity81.8 dB −2.5, worse
MorelCAW 634
£104.66 · 205% more, worseFs43 Hz −73%, better
Qts0.42 –
Vas13.7 L +6750%, worse
BL5.6 T·m +24%, better
Xmax4.3 mm +750%, better
Sensitivity85.2 dB +0.9
MorelTIW 638FT
£129.78 · 278% more, worseFs40 Hz −75%, better
Qts0.42 –
Vas19.7 L +9750%, worse
BL7.3 T·m +62%, better
Xmax4.3 mm +750%, better
Sensitivity86.3 dB +2, better
MorelEM 428
£184.17 · 436% more, worseFs68 Hz −57%, better
Qts0.41 –
Vas3.5 L +1650%, worse
BL5.4 T·m +20%, better
Xmax3 mm +500%, better
Sensitivity85.6 dB +1.3
MorelTICW 638ND
£293.02 · 754% more, worseFs45 Hz −71%, better
Qts0.42 –
Vas14 L +6900%, worse
BL7.5 T·m +67%, better
Xmax5.3 mm +950%, better
Sensitivity86.4 dB +2.1, better
Tang BandW2-1767S
No current priceFs110 Hz −30%, better
Qts0.36 −14%, better
Vas0.22 L +10%
BL5.0 T·m +12%, better
Xmax3 mm +500%, better
Sensitivity80.6 dB −3.7, worse
Tang BandW3-316B
No current priceFs100 Hz −36%, better
Qts0.44 +5%
Vas1.9 L +845%, worse
BL4.1 T·m −8%
Xmax1.2 mm +140%, better
Sensitivity88 dB +3.7, better
Tang BandW2-803SM
No current priceFs160 Hz –
Qts0.40 −5%
Vas0.25 L +25%, worse
BL2.7 T·m −40%, worse
Xmax0.85 mm +70%, better
Sensitivity85.5 dB +1.2
Tang BandW2-2181S
No current priceFs120 Hz −24%, better
Qts0.34 −19%, better
Vas0.24 L +20%, worse
BL3.7 T·m −17%, worse
Xmax2 mm +300%, better
Sensitivity81.9 dB −2.4, worse
WavecorSW084OM01
No current priceFs74 Hz −53%, better
Qts0.44 +5%
Vas1.7 L +750%, worse
BL3.6 T·m −21%, worse
Xmax4.5 mm +800%, better
Sensitivity83.8 dB −0.5
Tang BandW3-1876S
No current priceFs55 Hz −65%, better
Qts0.43 –
Vas0.9 L +340%, worse
BL5.3 T·m +17%, better
Xmax4 mm +700%, better
Sensitivity76.7 dB −7.6, worse
Tang BandW3-1797S
No current priceFs90 Hz −43%, better
Qts0.35 −17%, better
Vas1.0 L +385%, worse
BL4.6 T·m –
Xmax1 mm +100%, better
Sensitivity84.1 dB –
KartesianWIB50_VHP
No current priceFs155 Hz –
Qts0.46 +10%
Vas0.17 L −15%, better
BL4.8 T·m +7%
Xmax2.5 mm +400%, better
Sensitivity84 dB –
Dayton AudioDMA80-4
No current priceFs94 Hz −40%, better
Qts0.41 –
Vas1.4 L +608%, worse
BL3.7 T·m −18%, worse
Xmax2.5 mm +400%, better
Sensitivity85.6 dB +1.3
Tang BandW3-926SD
No current priceFs110 Hz −30%, better
Qts0.46 +10%
Vas1.9 L +845%, worse
BL3.8 T·m −15%, worse
Xmax0.75 mm +50%, better
Sensitivity89 dB +4.7, better
PRV Audio2MR50-NDY
No current priceFs124 Hz −21%, better
Qts0.37 −12%, better
Vas0.44 L +120%, worse
BL5.0 T·m +10%, better
Xmax2.9 mm +480%, better
Sensitivity85.1 dB +0.8
FountekFR59EXE
No current priceFs139 Hz −11%, better
Qts0.36 −14%, better
Vas0.15 L −25%, better
BL3.0 T·m −34%, worse
Xmax1.4 mm +180%, better
Sensitivity81.3 dB −3, worse
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 |
|---|---|---|---|---|
LTT Import VAT and duty may apply | £34.33, the lowest price | Stock not listed | Visit shop at LTT | |
SoundImports Import VAT and duty may apply | £43.08 | 26% above the lowest price | 4 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr