REDCATT61FHM-2
£19.93 · 75% less, betterFs44 Hz +16%, worse
Qts0.52 +18%, worse
Vas14.4 L −61%, better
BL6.0 T·m –
Xmax3.2 mm +7%
Sensitivity85.3 dB −2.4, worse
6.5-inch LF driver · SPH series · 25 mm voice coil · 50 W
Monacor SPH-170 8Ω
8 Ω · 3–5000 Hz
£89.92
3.3%Willys-Hifi · All 4 offers
- Fs
- 38Hz
- Xmax
- 3mm
- SPL
- 88dB
- Pe
- 50W
- BL
- 5.9T·m
- Vd
- 41cm³
- Qts
- 0.44
- Vas
- 37L
Monacor SPH-170 is a 6.5-inch 8 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 38 Hz, Qts 0.44, Vas 37 L, Xmax 3 mm, sensitivity 87.7 dB, plus 41 cm³ Vd and 69 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 £80.38.
The published T/S values agree with each other
Thiele/Small
- Fs
- 38Hz
- Qts
- 0.44
- Qes
- 0.55
- Qms
- 2.4
- Vas
- 37L
- Re
- 6.2Ω
- Le
- 0.45mH
Motor and cone
- BL
- 5.9T·m
- Sd
- 137cm²
- Mms
- 13g
- Xmax
- 3mm
- Vd †
- 41cm³
- Voice coil
- 25mm
Power and response
- Sensitivity †
- 87.7dB
- Manufacturer sensitivity
- 90dB
- Power
- 50W
- Impedance
- 8Ω
- Range
- 3–5000Hz
- EBP †
- 69 · Sealed or vented
Size and mounting
- Diameter
- 185mm
- Cutout
- 150mm
- Depth
- 80mm
- Weight
- 1.3kg
Other published values
- Cms
- 1.43mm/N
- Power Peak
- 80
Other dimensions
- Mounting Depth
- 73
Sensitivity shows 87.7 dB, calculated from the T/S values. Monacor publishes 90.0 dB, 2.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Monacor lists
MF · Primary · 6.5″
- BL
- 5.9T·m
- Fs
- 38Hz
- Le
- 0.45mH
- Re
- 6.2Ω
- Sd
- 137cm²
- Cms
- 1.43mm/N
- Mms
- 13g
- Qes
- 0.55
- Qms
- 2.4
- Qts
- 0.44
- SPL
- 87.7dB
- Vas
- 37L
- Xmax
- 3mm
- Power
- 50W
- Impedance
- 8Ω
- Power Peak
- 80
- Sensitivity
- 90dB
- Low limit
- 3Hz
- Calculated sensitivity †
- 87.7dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 90dB
- Voice coil
- 25mm
- Weight
- 1.3kg
- Diameter
- 185mm
- Depth
- 80mm
- Mounting Depth
- 73
- Cutout
- 150mm
02
Compare
Same-size drivers, compared with the SPH-170. Clear differences are green when better and red when worse.
This driverSPH-170
Best price
£80.38
Fs
38 Hz
Qts
0.44
Vas
37 L
BL
5.9 T·m
Xmax
3 mm
Sensitivity
87.7 dB
Power
50 W
SB AcousticsSB16PFCR25-8
£24.27 · 70% less, betterFs38 Hz –
Qts0.40 −9%
Vas27 L −27%, better
BL6.2 T·m +5%
Xmax4.5 mm +50%, better
Sensitivity86.9 dB −0.8
MonacorSP-167E
£26.12 · 68% less, betterFs62 Hz +63%, worse
Qts0.41 −7%
Vas17.9 L −52%, better
BL5.4 T·m −8%
Xmax2.5 mm −17%, worse
Sensitivity91.5 dB +3.8, better
MonacorSPM-165/8
£27.63 · 66% less, betterFs49 Hz +29%, worse
Qts0.55 +25%, worse
Vas33 L −11%, better
BL5.8 T·m –
Xmax3 mm –
Sensitivity89.7 dB +2, better
MonacorSPH-174KE
£29.31 · 64% less, betterFs42 Hz +11%, worse
Qts0.51 +16%, worse
Vas26 L −30%, better
BL5.9 T·m –
Xmax3 mm –
Sensitivity86.8 dB −0.9
SB AcousticsSB16FRPC25-7
£30.52 · 62% less, betterFs44 Hz +16%, worse
Qts0.46 +5%
Vas31 L −16%, better
BL5.4 T·m −8%
Xmax3.0 mm –
Sensitivity89.4 dB +1.7
SB AcousticsSB17NRX2C35-8
£55.41 · 31% less, betterFs37 Hz −4%
Qts0.42 −5%
Vas27 L −27%, better
BL6.3 T·m +6%
Xmax5.5 mm +83%, better
Sensitivity86.5 dB −1.2
WavecorWF168WA06
£57.60 · 28% less, betterFs41 Hz +8%
Qts0.50 +14%, worse
Vas27.7 L −25%, better
BL6.4 T·m +8%
Xmax3 mm –
Sensitivity87.5 dB –
WavecorWF146WA02
£57.60 · 28% less, betterFs58 Hz +53%, worse
Qts0.51 +16%, worse
Vas10 L −73%, better
BL6.4 T·m +8%
Xmax3 mm –
Sensitivity87.6 dB –
WavecorWF146WA01
£57.60 · 28% less, betterFs56 Hz +47%, worse
Qts0.42 −5%
Vas10 L −73%, better
BL5.1 T·m −14%, worse
Xmax3 mm –
Sensitivity87.9 dB –
Scanspeak18W/8424G00
£57.77 · 28% less, betterFs54 Hz +42%, worse
Qts0.45 –
Vas20.3 L −45%, better
BL6.6 T·m +12%, better
Xmax2.6 mm −13%, worse
Sensitivity90 dB +2.3, better
WavecorWF168WA02
£60.59 · 25% less, betterFs49 Hz +29%, worse
Qts0.52 +18%, worse
Vas24.6 L −34%, better
BL6.4 T·m +8%
Xmax3 mm –
Sensitivity89.2 dB +1.5
MonacorSPH-175HQ
£68.66 · 15% less, betterFs39 Hz –
Qts0.42 −5%
Vas33 L −11%, better
BL6.4 T·m +8%
Xmax5.5 mm +83%, better
Sensitivity88 dB –
SB AcousticsSB17NAC35-8
£70.75 · 12% less, betterFs32 Hz −17%, better
Qts0.42 −5%
Vas33 L −11%, better
BL6.2 T·m +5%
Xmax5.5 mm +83%, better
Sensitivity85.6 dB −2.1, worse
SEASH1217-08 CA18RLY
£90.62 · 13% more, worseFs42 Hz +11%, worse
Qts0.47 +7%
Vas32 L −14%, better
BL5.6 T·m −5%
Xmax5 mm +67%, better
Sensitivity88.3 dB +0.6
WavecorWF166TU02
£96.50 · 20% more, worseFs50 Hz +32%, worse
Qts0.48 +9%
Vas22.3 L −40%, better
BL5 T·m −15%, worse
Xmax3 mm –
Sensitivity89.5 dB +1.8
WavecorWF168WA01
£96.71 · 20% more, worseFs48 Hz +25%, worse
Qts0.43 –
Vas24.6 L −34%, better
BL5.1 T·m −14%, worse
Xmax3 mm –
Sensitivity89.6 dB +1.9
WavecorWF168WA05
£102.24 · 27% more, worseFs40 Hz +5%
Qts0.42 −5%
Vas27.7 L −25%, better
BL5 T·m −15%, worse
Xmax3 mm –
Sensitivity88 dB –
MarkaudioALPAIR 12PW
£120.00 · 49% more, worseFs38 Hz –
Qts0.39 −11%, better
Vas45.3 L +22%, worse
BL5.3 T·m −10%, worse
Xmax8.5 mm +183%, better
Sensitivity88.8 dB +1.1
Tang BandW6-2144
£141.51 · 76% more, worseFs45 Hz +18%, worse
Qts0.45 –
Vas34.6 L −6%
BL5.5 T·m −8%
Xmax3 mm –
Sensitivity89.1 dB +1.4
£152.39 · 90% more, worse
Fs42 Hz +11%, worse
Qts0.39 −11%, better
Vas31 L −16%, better
BL6.6 T·m +12%, better
Xmax3 mm –
Sensitivity89.4 dB +1.7
£376.75 · 369% more, worse
Fs34 Hz −11%, better
Qts0.42 −5%
Vas30 L −19%, better
BL6.6 T·m +12%, better
Xmax5 mm +67%, better
Sensitivity85.8 dB −1.9
Tang BandW6-658I
No current priceFs45 Hz +18%, worse
Qts0.44 –
Vas28.3 L −23%, better
BL6.3 T·m +7%
Xmax4.1 mm +37%, better
Sensitivity89.2 dB +1.5
WavecorWF166TU01
No current priceFs50 Hz +32%, worse
Qts0.45 –
Vas23.2 L −37%, better
BL5.2 T·m −12%, worse
Xmax3.5 mm +17%, better
Sensitivity89.9 dB +2.2, better
Tang BandW6-789E
No current priceFs50 Hz +32%, worse
Qts0.46 +5%
Vas41.5 L +12%, worse
BL5.1 T·m −13%, worse
Xmax4.3 mm +42%, better
Sensitivity92.2 dB +4.5, better
Tang BandW6-1721
No current priceFs40 Hz +5%
Qts0.43 –
Vas29.4 L −21%, better
BL5.1 T·m −13%, worse
Xmax8 mm +167%, better
Sensitivity87.9 dB –
PRV Audio6MB400-4
No current priceFs125 Hz +228%, worse
Qts0.52 +18%, worse
Vas5.3 L −86%, better
BL6.6 T·m +12%, better
Xmax3 mm –
Sensitivity94.7 dB +7, better
Tang BandW6-1916
No current priceFs60 Hz +58%, worse
Qts0.46 +5%
Vas23.7 L −36%, better
BL5.8 T·m –
Xmax5 mm +67%, better
Sensitivity91.2 dB +3.5, better
WavecorWF146OM02
No current priceFs50 Hz +32%, worse
Qts0.51 +16%, worse
Vas13.6 L −63%, better
BL5.4 T·m −8%
Xmax3.3 mm +10%
Sensitivity86.9 dB −0.8
SB AcousticsSB17BAC35-8-COAX
No current priceFs35 Hz −7%
Qts0.33 −25%, better
Vas33.1 L −11%, better
BL5.7 T·m −3%
Xmax3.1 mm +3%
Sensitivity88.1 dB –
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 |
|---|---|---|---|---|
Willys-Hifi | £89.92, the lowest price | Stock not listed | Visit shop at Willys-Hifi | |
Wilmslow Audio | £102.60 | 14% above the lowest price | Stock not listed | Visit shop at Wilmslow Audio |
LTT Import VAT and duty may apply | £80.38 | Stock not listed | Visit shop at LTT | |
Audiophonics Import VAT and duty may apply | £99.64 | 11% above the lowest price | Available on order | Visit shop at Audiophonics |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£92.95 → £89.92Down 3.3% from £92.95
- 30 SepWillys-Hifi£91.95 → £92.95Up 1.1% from £91.95
- 16 SepWillys-Hifi£92.95 → £91.95Down 1.1% from £92.95