Dayton AudioSIG180-4
£41.54 · 51% less, betterFs41 Hz +7%
Qts0.38 –
Vas23.2 L −28%, better
BL6.6 T·m −19%, worse
Xmax5 mm –
Sensitivity87.8 dB −0.6
8-inch LF driver · 36 mm voice coil · 50 W
REDCATT 8FHM 4Ω
4 Ω
No price for delivery to the UK
- Fs
- 38Hz
- Xmax
- 5mm
- SPL
- 88dB
- Pe
- 50W
- BL
- 8.2T·m
- Vd
- 103cm³
- Qts
- 0.39
- Vas
- 32L
REDCATT 8FHM is an 8-inch 4 ohm LF driver rated at 50 W RMS. The validated T/S data includes Fs 38 Hz, Qts 0.39, Vas 32.1 L, Xmax 5 mm, sensitivity 88.4 dB, plus 103 cm³ Vd and 93 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 £84.44.
The published T/S values agree with each other
Thiele/Small
- Fs
- 38Hz
- Qts
- 0.39
- Qes
- 0.41
- Qms
- 12.9
- Vas
- 32.1L
- Re
- 3.6Ω
- Le
- 0.46mH
Motor and cone
- BL
- 8.2T·m
- Sd
- 206cm²
- Mms
- 32g
- Xmax
- 5mm
- Vd †
- 103cm³
- Voice coil
- 36mm
Power and response
- Sensitivity †
- 88.4dB
- Manufacturer sensitivity
- 89dB
- Power
- 50W
- Impedance
- 4Ω
- EBP †
- 93 · Sealed or vented
Size and mounting
- Diameter
- 223.5mm
- Cutout
- 189mm
- Bolt circle
- 210mm
- Weight
- 2.8kg
Other published values
- Xmech
- 13
- Power Peak
- 200
Other dimensions
- Mounting Depth
- 94.5
† Calculated by bits from the published values
What this validation status means
Everything else REDCATT lists
LF · Primary · 8″
- BL
- 8.2T·m
- Fs
- 38Hz
- Le
- 0.46mH
- Re
- 3.6Ω
- Sd
- 206cm²
- Mms
- 32g
- Qes
- 0.41
- Qms
- 12.9
- Qts
- 0.39
- SPL
- 88.4dB
- Vas
- 32.1L
- Xmax
- 5mm
- Xmech
- 13
- Power
- 50W
- Impedance
- 4Ω
- Power Peak
- 200
- Sensitivity
- 89dB
- Calculated sensitivity †
- 88.4dB
- Manufacturer sensitivity
- 89dB
- Voice coil
- 36mm
- Weight
- 2.8kg
- Diameter
- 223.5mm
- Mounting Depth
- 94.5
- Cutout
- 189mm
- Bolt circle
- 210mm
02
Compare
Same-size drivers, compared with the 8FHM. Clear differences are green when better and red when worse.
This driver8FHM
Best price
£84.44
Fs
38 Hz
Qts
0.39
Vas
32.1 L
BL
8.2 T·m
Xmax
5 mm
Sensitivity
88.4 dB
Power
50 W
Dayton AudioDA215-8
£42.30 · 50% less, betterFs35 Hz −8%
Qts0.37 −5%
Vas42.7 L +33%, worse
BL10 T·m +22%, better
Xmax5.3 mm +6%
Sensitivity88.1 dB –
Dayton AudioSD215A-88
£50.65 · 40% less, betterFs31 Hz −18%, better
Qts0.39 –
Vas38.2 L +19%, worse
BL7.7 T·m −6%
Xmax6 mm +20%, better
Sensitivity86.1 dB −2.3, worse
HiViF8
£53.18 · 37% less, betterFs37 Hz –
Qts0.40 –
Vas38.8 L +21%, worse
BL10.3 T·m +26%, better
Xmax5 mm –
Sensitivity88.5 dB –
CelestionTRUVOX 0820
£59.69 · 29% less, betterFs74 Hz +95%, worse
Qts0.39 –
Vas17.3 L −46%, better
BL11.5 T·m +41%, better
Xmax5 mm –
Sensitivity94.3 dB +5.9, better
CIAREHW172
£63.36 · 25% less, betterFs46 Hz +21%, worse
Qts0.37 −5%
Vas20 L −38%, better
BL7.6 T·m −7%
Xmax4.5 mm −10%, worse
Sensitivity88.4 dB –
REDCATT8FR
£66.69 · 21% less, betterFs53 Hz +39%, worse
Qts0.38 −3%
Vas36.8 L +15%, worse
BL7.9 T·m −4%
Xmax5.8 mm +16%, better
Sensitivity93.4 dB +5, better
PRV Audio8MR600X-4
£67.93 · 20% less, betterFs77 Hz +103%, worse
Qts0.34 −13%, better
Vas19.6 L −39%, better
BL8.9 T·m +9%
Xmax5.1 mm –
Sensitivity96 dB +7.6, better
Scanspeak22W/8534G00
£85.75 · 2% moreFs30 Hz −21%, better
Qts0.39 –
Vas94.2 L +193%, worse
BL7.8 T·m −5%
Xmax5.8 mm +16%, better
Sensitivity89.7 dB +1.3
PRV Audio8MR600X
£95.42 · 13% more, worseFs77 Hz +102%, worse
Qts0.40 –
Vas20.0 L −38%, better
BL10.5 T·m +29%, better
Xmax5.3 mm +5%
Sensitivity95.3 dB +6.9, better
WavecorWF182BD12
£119.38 · 41% more, worseFs30 Hz −22%, better
Qts0.37 −5%
Vas32.4 L –
BL8.2 T·m –
Xmax5.5 mm +10%, better
Sensitivity85.4 dB −3, worse
Dayton AudioPM220-8
£151.22 · 79% more, worseFs49 Hz +29%, worse
Qts0.38 –
Vas63 L +96%, worse
BL7.2 T·m −12%, worse
Xmax4.6 mm −8%
Sensitivity94.6 dB +6.2, better
ETON8-512/C8/32 HEX
£185.82 · 120% more, worseFs27 Hz −29%, better
Qts0.40 –
Vas102 L +218%, worse
BL7.8 T·m −5%
Xmax5.5 mm +10%, better
Sensitivity88.7 dB –
WavecorWF182BD20
£190.08 · 125% more, worseFs30 Hz −22%, better
Qts0.37 −5%
Vas32.4 L –
BL8.2 T·m –
Xmax5.5 mm +10%, better
Sensitivity85.4 dB −3, worse
WavecorWF223BD01
£207.23 · 145% more, worseFs33 Hz −14%, better
Qts0.39 –
Vas45 L +40%, worse
BL7.7 T·m −6%
Xmax6.5 mm +30%, better
Sensitivity87.9 dB −0.5
Scanspeak18WU/8747T00
£287.19 · 240% more, worseFs36 Hz −5%
Qts0.38 –
Vas36.2 L +13%, worse
BL7.4 T·m −10%
Xmax9 mm +80%, better
Sensitivity88 dB –
Scanspeak18WU/8741T00
£303.37 · 259% more, worseFs35 Hz −8%
Qts0.39 –
Vas37.1 L +16%, worse
BL7.3 T·m −11%, worse
Xmax9 mm +80%, better
Sensitivity87.6 dB −0.8
AccutonC173-6-191
£337.88 · 300% more, worseFs39 Hz –
Qts0.34 −13%, better
Vas21.6 L −33%, better
BL8.8 T·m +7%
Xmax5 mm –
Sensitivity87.3 dB −1.1
£397.02 · 370% more, worse
Fs25 Hz −34%, better
Qts0.34 −13%, better
Vas98 L +205%, worse
BL8.1 T·m –
Xmax5 mm –
Sensitivity87.8 dB −0.6
AccutonS220-6-221
£448.59 · 431% more, worseFs22 Hz −42%, better
Qts0.37 −5%
Vas112.9 L +252%, worse
BL8.3 T·m –
Xmax5 mm –
Sensitivity87 dB −1.4
AccutonC220-6-221
£506.84 · 500% more, worseFs26 Hz −31%, better
Qts0.40 –
Vas86.2 L +169%, worse
BL8.7 T·m +6%
Xmax5 mm –
Sensitivity87.8 dB −0.6
WavecorWF182BD11
No current priceFs34 Hz −11%, better
Qts0.42 +8%
Vas24.3 L −24%, better
BL8.2 T·m –
Xmax5.5 mm +10%, better
Sensitivity85.4 dB −3, worse
WavecorWF182BD19
No current priceFs34 Hz −11%, better
Qts0.42 +8%
Vas24.3 L −24%, better
BL8.2 T·m –
Xmax5.5 mm +10%, better
Sensitivity85.4 dB −3, worse
CIARECME201
No current priceFs60 Hz +58%, worse
Qts0.40 –
Vas21.5 L −33%, better
BL7.5 T·m −8%
Xmax4.5 mm −10%, worse
Sensitivity92.3 dB +3.9, better
Eighteen Sound8MB400
No current priceFs64 Hz +68%, worse
Qts0.38 –
Vas23.9 L −26%, better
BL9.3 T·m +14%, better
Xmax5.8 mm +16%, better
Sensitivity93.7 dB +5.3, better
PRV AudioMT8MB600CF-NDY-4
No current priceFs65 Hz +70%, worse
Qts0.37 −5%
Vas18.8 L −41%, better
BL9.3 T·m +14%, better
Xmax4.8 mm −5%
Sensitivity93.3 dB +4.9, better
Oberton8CX
No current priceFs76 Hz +100%, worse
Qts0.40 –
Vas16.8 L −48%, better
BL9.4 T·m +15%, better
Xmax5.3 mm +5%
Sensitivity94.3 dB +5.9, better
WavecorWF182BD07
No current priceFs40 Hz +5%
Qts0.34 −13%, better
Vas24.4 L −24%, better
BL8.5 T·m +4%
Xmax5.5 mm +10%, better
Sensitivity88.5 dB –
REDCATT8FHW-2
No current priceFs36 Hz −5%
Qts0.35 −10%, better
Vas34.3 L +7%
BL8.6 T·m +5%
Xmax3.6 mm −27%, worse
Sensitivity88.3 dB –
CIARECMI200ND
No current priceFs80 Hz +111%, worse
Qts0.37 −5%
Vas12.5 L −61%, better
BL8.8 T·m +7%
Xmax4.5 mm −10%, worse
Sensitivity94.2 dB +5.8, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
None of the shops we track lists delivery to the UK at checkout.