REDCATT30FF
£9.00 · 56% less, betterFs119 Hz –
Qts0.78 +5%
Vas0.8 L −17%, better
BL3.3 T·m −50%, worse
Xmax19 mm +631%, better
Sensitivity83.5 dB −1.2
3-inch LF driver · ALPHA series · 35 W
Eminence ALPHA 3-32 32Ω
32 Ω · 150–20000 Hz
£20.53
SteadyBlue Aran · 2 in stock · All 2 offers
- Fs
- 117Hz
- Xmax
- 2.6mm
- SPL
- 85dB
- Pe
- 35W
- BL
- 6.5T·m
- Vd
- 7cm³
- Qts
- 0.74
- Vas
- 1L
Eminence ALPHA 3-32 is a 3-inch 32 ohm LF driver rated at 35 W RMS. The validated T/S data includes Fs 117 Hz, Qts 0.74, Vas 1.0 L, Xmax 2.6 mm, sensitivity 84.7 dB, plus 7 cm³ Vd and 138 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 £20.53.
The published T/S values agree with each other
Thiele/Small
- Fs
- 117Hz
- Qts
- 0.74
- Qes
- 0.85
- Qms
- 5.9
- Vas
- 1.0L
- Re
- 22.4Ω
- Le
- 0.23mH
Motor and cone
- BL
- 6.5T·m
- Sd
- 29cm²
- Mms
- 2g
- Xmax
- 2.6mm
- Vd †
- 7cm³
Power and response
- Sensitivity †
- 84.7dB
- Manufacturer sensitivity
- 88dB
- Power
- 35W
- Impedance
- 32Ω
- Range
- 150–20000Hz
- EBP †
- 138 · Leans vented
Size and mounting
- Diameter
- 101.1mm
- Cutout
- 77.2mm
- Bolt circle
- 92.2mm
- Depth
- 44.7mm
- Weight
- 0.4kg
Other published values
- Cms
- 0.86mm/N
- Xmech
- 4
- Power Program
- 70
Sensitivity shows 84.7 dB, calculated from the T/S values. Eminence publishes 88.0 dB, 3.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eminence lists
LF · Primary · 3″
- BL
- 6.5T·m
- Fs
- 117Hz
- Le
- 0.23mH
- Re
- 22.4Ω
- Sd
- 29cm²
- Cms
- 0.86mm/N
- Mms
- 2g
- Qes
- 0.85
- Qms
- 5.9
- Qts
- 0.74
- SPL
- 84.7dB
- Vas
- 1.0L
- Xmax
- 2.6mm
- Xmech
- 4
- Power
- 35W
- Impedance
- 32Ω
- Sensitivity
- 88dB
- Low limit
- 150Hz
- Power Program
- 70
- Calculated sensitivity †
- 84.7dB
- High limit
- 20000Hz
- Manufacturer sensitivity
- 88dB
- Weight
- 0.4kg
- Diameter
- 101.1mm
- Depth
- 44.7mm
- Cutout
- 77.2mm
- Bolt circle
- 92.2mm
02
Compare
Same-size drivers, compared with the ALPHA 3-32. Clear differences are green when better and red when worse.
This driverALPHA 3-32
Best price
£20.53
Fs
117 Hz
Qts
0.74
Vas
1.0 L
BL
6.5 T·m
Xmax
2.6 mm
Sensitivity
84.7 dB
Power
35 W
LavoceFSF030.70
£10.04 · 51% less, betterFs123 Hz +5%
Qts0.77 +4%
Vas1.2 L +19%, worse
BL3.5 T·m −46%, worse
Xmax2.1 mm −19%, worse
Sensitivity85.9 dB +1.2
Dayton AudioPC68-4
£11.26 · 45% less, betterFs117 Hz –
Qts0.65 −12%, better
Vas0.7 L −29%, better
BL2.4 T·m −63%, worse
Xmax2 mm −23%, worse
Sensitivity83.1 dB −1.6
Dayton AudioCE81PF-8
£12.52 · 39% less, betterFs97 Hz −17%, better
Qts0.81 +9%
Vas1.0 L –
BL3.7 T·m −42%, worse
Xmax2.7 mm +4%
Sensitivity82.1 dB −2.6, worse
REDCATT41FR
£12.52 · 39% less, betterFs134 Hz +15%, worse
Qts0.75 –
Vas1.3 L +33%, worse
BL4.8 T·m −26%, worse
Xmax1.1 mm −58%, worse
Sensitivity87.9 dB +3.2, better
PeerlessGBS-85N25PR07-04
£14.59 · 29% less, betterFs130 Hz +11%, worse
Qts0.70 −5%
Vas0.47 L −53%, better
BL4.5 T·m −31%, worse
Xmax3.0 mm +13%, better
Sensitivity83.1 dB −1.6
PeerlessPLS-P830986
£14.59 · 29% less, betterFs110 Hz −6%
Qts0.80 +8%
Vas0.8 L −15%, better
BL3.5 T·m −47%, worse
Xmax3.4 mm +30%, better
Sensitivity82.7 dB −2, worse
Dayton AudioDMA80-8
£19.17 · 7% less, betterFs98 Hz −17%, better
Qts0.47 −36%, better
Vas1.1 L +16%, worse
BL5.1 T·m −21%, worse
Xmax2.5 mm −4%
Sensitivity84.4 dB –
REDCATT25NFR
£19.63 · 4% lessFs123 Hz +5%
Qts0.71 −4%
Vas0.46 L −53%, better
BL4 T·m −38%, worse
Xmax2.6 mm –
Sensitivity82.3 dB −2.4, worse
Dayton AudioPS95-8
£22.10 · 8% more, worseFs120 Hz –
Qts0.72 –
Vas0.9 L −4%
BL3.8 T·m −41%, worse
Xmax2.5 mm −4%
Sensitivity85.1 dB –
Dayton AudioDMA105-8
£22.10 · 8% more, worseFs72 Hz −38%, better
Qts0.63 −15%, better
Vas4.2 L +333%, worse
BL4.5 T·m −30%, worse
Xmax2.5 mm −4%
Sensitivity84.8 dB –
LavoceFSN030.71
£24.69 · 20% more, worseFs134 Hz +15%, worse
Qts0.67 −9%
Vas1.0 L +6%
BL3.8 T·m −41%, worse
Xmax2.1 mm −19%, worse
Sensitivity87.3 dB +2.6, better
CelestionAF3010
£25.11 · 22% more, worseFs129 Hz +10%, worse
Qts0.74 –
Vas0.7 L −32%, better
BL6.0 T·m −7%
Xmax2.8 mm +6%
Sensitivity84.3 dB –
SB AcousticsSB65WBAC25-4
£25.12 · 22% more, worseFs115 Hz –
Qts0.68 −8%
Vas0.43 L −56%, better
BL2.9 T·m −55%, worse
Xmax2.6 mm –
Sensitivity81.3 dB −3.4, worse
Sica4 L 1 SL
£25.87 · 26% more, worseFs108 Hz −7%
Qts0.63 −15%, better
Vas1.2 L +22%, worse
BL5.1 T·m −21%, worse
Xmax2.4 mm −8%
Sensitivity84.9 dB –
CIAREHM100
£27.63 · 35% more, worseFs160 Hz +37%, worse
Qts0.70 −5%
Vas1.1 L +12%, worse
BL5.1 T·m −21%, worse
Xmax2.2 mm −15%, worse
Sensitivity88.7 dB +4, better
CelestionAF4010
£30.13 · 47% more, worseFs105 Hz −11%, better
Qts0.81 +9%
Vas2.1 L +117%, worse
BL6.0 T·m −8%
Xmax2.8 mm +6%
Sensitivity86.1 dB +1.4
Sica4 L1 1 SL
£38.93 · 90% more, worseFs120 Hz –
Qts0.36 −51%, better
Vas1.2 L +22%, worse
BL6.2 T·m −5%
Xmax2.5 mm −4%
Sensitivity88.8 dB +4.1, better
WavecorWF090WA01
£41.14 · 100% more, worseFs115 Hz –
Qts0.81 +9%
Vas1.0 L +4%
BL2.9 T·m −55%, worse
Xmax2.8 mm +6%
Sensitivity84.3 dB –
WavecorWF090WA02
£57.10 · 178% more, worseFs109 Hz −7%
Qts0.76 –
Vas1.1 L +16%, worse
BL3.5 T·m −46%, worse
Xmax2.8 mm +6%
Sensitivity84.3 dB –
WavecorFR090WA02
£61.12 · 198% more, worseFs109 Hz −7%
Qts0.85 +15%, worse
Vas1.1 L +16%, worse
BL3.4 T·m −47%, worse
Xmax2.3 mm −13%, worse
Sensitivity83.7 dB −1
WavecorFR084WA01
£61.71 · 201% more, worseFs113 Hz −3%
Qts0.82 +11%, worse
Vas1.1 L +9%
BL2.9 T·m −55%, worse
Xmax2 mm −23%, worse
Sensitivity84.1 dB −0.6
ScanspeakD8404/552000
£2,428.16 · 11727% more, worseFs280 Hz +139%, worse
Qts0.69 −7%
Vas0.27 L −72%, better
BL6.1 T·m −6%
Xmax2.4 mm −8%
Sensitivity90.6 dB +5.9, better
EminenceALPHA 4-8
No current priceFs123 Hz +5%
Qts0.75 –
Vas1.9 L +98%, worse
BL4.9 T·m −24%, worse
Xmax2.6 mm –
Sensitivity88.4 dB +3.7, better
WavecorFR084WA02
No current priceFs109 Hz −7%
Qts0.79 +7%
Vas1.1 L +16%, worse
BL3.6 T·m −43%, worse
Xmax2.5 mm −4%
Sensitivity84 dB −0.7
PeerlessPLS-75F25AL02-08
No current priceFs100 Hz −15%, better
Qts0.74 –
Vas1.1 L +10%, worse
BL3.6 T·m −45%, worse
Xmax3.4 mm +30%, better
Sensitivity83.1 dB −1.6
Dayton AudioCFC100-8
No current priceFs107 Hz −9%
Qts0.78 +5%
Vas0.75 L −23%, better
BL3.9 T·m −40%, worse
Xmax2.5 mm −4%
Sensitivity81.6 dB −3.1, worse
WavecorFR070OM01
No current priceFs116 Hz –
Qts0.83 +12%, worse
Vas0.6 L −39%, better
BL2.3 T·m −64%, worse
Xmax2.5 mm −4%
Sensitivity82.3 dB −2.4, worse
REDCATT35FR-2
No current priceFs128 Hz +9%
Qts0.63 −15%, better
Vas1.1 L +16%, worse
BL4.8 T·m −26%, worse
Xmax2.4 mm −10%
Sensitivity87.5 dB +2.8, better
Dayton AudioCFC100-4
No current priceFs94 Hz −20%, better
Qts0.60 −19%, better
Vas0.8 L −15%, better
BL3.1 T·m −51%, worse
Xmax2.5 mm −4%
Sensitivity81.7 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
- Parts Express5.0 out of 51 rating · Checked 25 Oct 2026Read reviews on Parts Express
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Blue Aran | £20.53, the lowest price | 2 in stock | Visit shop at Blue Aran | |
Parts Express Import VAT and duty may apply | £22.43 | 9.3% above the lowest price | Back order | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 7 AugBlue Aran£21.47 → £20.53Down 4.4% from £21.47