4-inch LF driver · ALPHA series · 55 W

Eminence ALPHA 4-4 4Ω

Name: Eminence ALPHA 4-4 4 Ohm
Brand: Eminence
SKU: ALPHA 4-4

4 Ω · 105–10000 Hz

No price for delivery to the UK

All 3 offers

Open in 00 Simulator

Fs: 120Hz
Xmax: 2.6mm
SPL: 88dB
Pe: 55W
BL: 4.1T·m
Vd: 15cm³
Qts: 0.63
Vas: 2L

See all 26 specs

Specifications

Published by Eminence

Manufacturer page

Datasheet PDF

Eminence ALPHA 4-4 is a 4-inch 4 ohm LF driver rated at 55 W RMS. The validated T/S data includes Fs 120 Hz, Qts 0.63, Vas 1.8 L, Xmax 2.6 mm, sensitivity 88.4 dB, plus 15 cm³ Vd and 171 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.

The published T/S values agree with each other

Thiele/Small

Fs: 120Hz
Qts: 0.63
Qes: 0.70
Qms: 6.4
Vas: 1.8L
Re: 3.4Ω
Le: 0.18mH

Motor and cone

BL: 4.1T·m
Sd: 58cm²
Mms: 5g
Xmax: 2.6mm
Vd †: 15cm³

Power and response

Sensitivity †: 88.4dB
Manufacturer sensitivity: 88dB
Power: 55W
Impedance: 4Ω
Range: 105–10000Hz
EBP †: 171 · Leans vented

Size and mounting

Diameter: 116.1mm
Cutout: 95.8mm
Bolt circle: 108.0mm
Depth: 58.7mm
Weight: 0.7kg

Other published values

Cms: 0.38mm/N
Xmech: 4.5
Power Program: 110

† Calculated by bits from the published values

What this validation status means

Everything else Eminence lists

LF · Primary · 4″

BL: 4.1T·m
Fs: 120Hz
Le: 0.18mH
Re: 3.4Ω
Sd: 58cm²
Cms: 0.38mm/N
Mms: 5g
Qes: 0.70
Qms: 6.4
Qts: 0.63
SPL: 88.4dB
Vas: 1.8L
Xmax: 2.6mm
Xmech: 4.5
Power: 55W
Impedance: 4Ω
Sensitivity: 88dB
Low limit: 105Hz
Power Program: 110
Calculated sensitivity †: 88.4dB
High limit: 10000Hz
Manufacturer sensitivity: 88dB
Weight: 0.7kg
Diameter: 116.1mm
Depth: 58.7mm
Cutout: 95.8mm
Bolt circle: 108.0mm

Compare

Same-size drivers, compared with the ALPHA 4-4. Clear differences are green when better and red when worse.

This driverALPHA 4-4

Best price

–

120 Hz

Qts

0.63

Vas

1.8 L

4.1 T·m

Xmax

2.6 mm

Sensitivity

88.4 dB

Power

55 W

REDCATT4FR-1

£11.96

Fs79 Hz −34%

Qts0.52 −17%

Vas1.8 L –

BL4.8 T·m +17%

Xmax2.8 mm +8%

Sensitivity83.7 dB −4.7

Dayton AudioPC83-8

£13.10

Fs82 Hz −32%

Qts0.63 –

Vas1.7 L −3%

BL3.5 T·m −15%

Xmax2 mm −23%

Sensitivity83 dB −5.4

VisatonSL 87 FE

£15.07

Fs120 Hz –

Qts0.65 +3%

Vas1.5 L −13%

BL4.0 T·m −4%

Xmax1.8 mm −33%

Sensitivity87.1 dB −1.3

Sica3.5 F 1 CS

£16.66

Fs107 Hz −11%

Qts0.57 −10%

Vas1.4 L −20%

BL4.2 T·m –

Xmax1.5 mm −42%

Sensitivity86.4 dB −2

Sica3.5 H 1 CS

£18.42

Fs85 Hz −29%

Qts0.53 −16%

Vas1.8 L –

BL4.8 T·m +17%

Xmax2.5 mm −4%

Sensitivity84.9 dB −3.5

PeerlessGBS-115N25AL01-04

£21.32

Fs90 Hz −25%

Qts0.63 –

Vas1.8 L –

BL4.5 T·m +10%

Xmax4.8 mm +87%

Sensitivity84.3 dB −4.1

FaitalPRO4FE32

£21.94

Fs100 Hz −17%

Qts0.61 −3%

Vas2.3 L +31%

BL4.8 T·m +17%

Xmax2.7 mm +5%

Sensitivity87.2 dB −1.2

Dayton AudioDMA105-8

£22.10

Fs72 Hz −40%

Qts0.63 –

Vas4.2 L +141%

BL4.5 T·m +9%

Xmax2.5 mm −4%

Sensitivity84.8 dB −3.6

Dayton AudioPS95-8

£22.10

Fs120 Hz –

Qts0.72 +14%

Vas0.9 L −47%

BL3.8 T·m −7%

Xmax2.5 mm −4%

Sensitivity85.1 dB −3.3

CIAREPA087

£24.28

Fs74 Hz −38%

Qts0.62 –

Vas2.2 L +25%

BL3.5 T·m −16%

Xmax2 mm −23%

Sensitivity83 dB −5.4

LavoceFSN030.71

£24.69

Fs134 Hz +12%

Qts0.67 +6%

Vas1.0 L −41%

BL3.8 T·m −7%

Xmax2.1 mm −19%

Sensitivity87.3 dB −1.1

Dayton AudioND90-8

£25.87

Fs71 Hz −41%

Qts0.65 +3%

Vas1.8 L –

BL4.3 T·m +4%

Xmax4 mm +54%

Sensitivity81.2 dB −7.2

Sica4 L 1 SL

£25.87

Fs108 Hz −10%

Qts0.63 –

Vas1.2 L −32%

BL5.1 T·m +24%

Xmax2.4 mm −8%

Sensitivity84.9 dB −3.5

Dayton AudioRS100P-8

£29.91

Fs96 Hz −20%

Qts0.54 −14%

Vas1.8 L +3%

BL4.0 T·m −4%

Xmax3.7 mm +42%

Sensitivity85.5 dB −2.9

Dayton AudioRS100-8

£29.91

Fs92 Hz −23%

Qts0.58 −8%

Vas1.4 L −19%

BL4.2 T·m –

Xmax3.5 mm +35%

Sensitivity83.7 dB −4.7

Dayton AudioND105-4

£30.48

Fs79 Hz −34%

Qts0.61 −3%

Vas2.0 L +12%

BL4.5 T·m +10%

Xmax4 mm +54%

Sensitivity83.7 dB −4.7

Tang BandW3-871SC

£30.90

Fs110 Hz −8%

Qts0.59 −6%

Vas1.6 L −6%

BL3.5 T·m −15%

Xmax0.5 mm −81%

Sensitivity86.9 dB −1.5

CIAREPA100

£30.98

Fs100 Hz −17%

Qts0.59 −6%

Vas2.5 L +42%

BL4.4 T·m +7%

Xmax2.5 mm −4%

Sensitivity87.6 dB −0.8

WavecorWF095WA02

£41.14

Fs86 Hz −28%

Qts0.62 –

Vas1.6 L −9%

BL3.6 T·m −13%

Xmax2.7 mm +4%

Sensitivity83.7 dB −4.7

WavecorWF095WA01

£41.14

Fs89 Hz −26%

Qts0.64 –

Vas1.5 L −15%

BL3 T·m −27%

Xmax2.7 mm +4%

Sensitivity83.8 dB −4.6

CelestionAN3510

£41.86

Fs113 Hz −5%

Qts0.65 –

Vas1.9 L +6%

BL4.6 T·m +11%

Xmax2.3 mm −13%

Sensitivity87.7 dB −0.7

Scanspeak10F/8414G10

£66.31

Fs100 Hz −17%

Qts0.51 −19%

Vas1.6 L −11%

BL4.3 T·m +4%

Xmax2.3 mm −12%

Sensitivity85.9 dB −2.5

VisatonB 80

£72.39

Fs110 Hz −8%

Qts0.63 –

Vas1.8 L –

BL4.2 T·m –

Xmax2.2 mm −15%

Sensitivity87.4 dB −1

Dayton AudioDMA90-8

No current price

Fs94 Hz −21%

Qts0.57 −10%

Vas1.7 L −3%

BL4.7 T·m +14%

Xmax2.5 mm −4%

Sensitivity84.9 dB −3.5

REDCATT35FR-2

No current price

Fs128 Hz +7%

Qts0.63 –

Vas1.1 L −35%

BL4.8 T·m +17%

Xmax2.4 mm −10%

Sensitivity87.5 dB −0.9

PeerlessTC10FG00-04

No current price

Fs160 Hz +33%

Qts0.65 +3%

Vas1.7 L −3%

BL3.4 T·m −18%

Xmax2.7 mm +4%

Sensitivity90.9 dB +2.5

Tang BandW3-532SQ

No current price

Fs100 Hz −17%

Qts0.61 −3%

Vas1.7 L −5%

BL3.5 T·m −14%

Xmax0.2 mm −92%

Sensitivity85.9 dB −2.5

Tang BandW3-582A

No current price

Fs100 Hz −17%

Qts0.60 −5%

Vas1.8 L –

BL3.6 T·m −14%

Xmax0.25 mm −90%

Sensitivity86.2 dB −2.2

Tang BandW3-1319SA

No current price

Fs110 Hz −8%

Qts0.55 −13%

Vas1.8 L –

BL3.5 T·m −14%

Xmax0.5 mm −81%

Sensitivity87.4 dB −1

EminenceALPHA 4-8

No current price

Fs123 Hz –

Qts0.75 +19%

Vas1.9 L +10%

BL4.9 T·m +20%

Xmax2.6 mm –

Sensitivity88.4 dB –

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Stock	Link
Lean Audio Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£16.26	Out of stock	Visit shop at Lean Audio
Lean Business Checked 15 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£32.88	Out of stock	Visit shop at Lean Business
Blue Aran Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20% 4-6 weeks	£42.77	Usually available in 4-6 weeks	Visit shop at Blue Aran

bits00 AUDIO

4-inch LF driver · ALPHA series · 55 W

Eminence ALPHA 4-4 4Ω

4 Ω · 105–10000 Hz

No price for delivery to the UK

All 3 offers

Open in 00 Simulator

Fs: 120Hz
Xmax: 2.6mm
SPL: 88dB
Pe: 55W
BL: 4.1T·m
Vd: 15cm³
Qts: 0.63
Vas: 2L

See all 26 specs

Specifications

Published by Eminence

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 120Hz
Qts: 0.63
Qes: 0.70
Qms: 6.4
Vas: 1.8L
Re: 3.4Ω
Le: 0.18mH

Motor and cone

BL: 4.1T·m
Sd: 58cm²
Mms: 5g
Xmax: 2.6mm
Vd †: 15cm³

Power and response

Sensitivity †: 88.4dB
Manufacturer sensitivity: 88dB
Power: 55W
Impedance: 4Ω
Range: 105–10000Hz
EBP †: 171 · Leans vented

Size and mounting

Diameter: 116.1mm
Cutout: 95.8mm
Bolt circle: 108.0mm
Depth: 58.7mm
Weight: 0.7kg

Other published values

Cms: 0.38mm/N
Xmech: 4.5
Power Program: 110

† Calculated by bits from the published values

What this validation status means

Everything else Eminence lists

LF · Primary · 4″

BL: 4.1T·m
Fs: 120Hz
Le: 0.18mH
Re: 3.4Ω
Sd: 58cm²
Cms: 0.38mm/N
Mms: 5g
Qes: 0.70
Qms: 6.4
Qts: 0.63
SPL: 88.4dB
Vas: 1.8L
Xmax: 2.6mm
Xmech: 4.5
Power: 55W
Impedance: 4Ω
Sensitivity: 88dB
Low limit: 105Hz
Power Program: 110
Calculated sensitivity †: 88.4dB
High limit: 10000Hz
Manufacturer sensitivity: 88dB
Weight: 0.7kg
Diameter: 116.1mm
Depth: 58.7mm
Cutout: 95.8mm
Bolt circle: 108.0mm

Compare

Same-size drivers, compared with the ALPHA 4-4. Clear differences are green when better and red when worse.

This driverALPHA 4-4

Best price

–

120 Hz

Qts

0.63

Vas

1.8 L

4.1 T·m

Xmax

2.6 mm

Sensitivity

88.4 dB

Power

55 W

REDCATT4FR-1

£11.96

Fs79 Hz −34%

Qts0.52 −17%

Vas1.8 L –

BL4.8 T·m +17%

Xmax2.8 mm +8%

Sensitivity83.7 dB −4.7

Dayton AudioPC83-8

£13.10

Fs82 Hz −32%

Qts0.63 –

Vas1.7 L −3%

BL3.5 T·m −15%

Xmax2 mm −23%

Sensitivity83 dB −5.4

VisatonSL 87 FE

£15.07

Fs120 Hz –

Qts0.65 +3%

Vas1.5 L −13%

BL4.0 T·m −4%

Xmax1.8 mm −33%

Sensitivity87.1 dB −1.3

Sica3.5 F 1 CS

£16.66

Fs107 Hz −11%

Qts0.57 −10%

Vas1.4 L −20%

BL4.2 T·m –

Xmax1.5 mm −42%

Sensitivity86.4 dB −2

Sica3.5 H 1 CS

£18.42

Fs85 Hz −29%

Qts0.53 −16%

Vas1.8 L –

BL4.8 T·m +17%

Xmax2.5 mm −4%

Sensitivity84.9 dB −3.5

PeerlessGBS-115N25AL01-04

£21.32

Fs90 Hz −25%

Qts0.63 –

Vas1.8 L –

BL4.5 T·m +10%

Xmax4.8 mm +87%

Sensitivity84.3 dB −4.1

FaitalPRO4FE32

£21.94

Fs100 Hz −17%

Qts0.61 −3%

Vas2.3 L +31%

BL4.8 T·m +17%

Xmax2.7 mm +5%

Sensitivity87.2 dB −1.2

Dayton AudioDMA105-8

£22.10

Fs72 Hz −40%

Qts0.63 –

Vas4.2 L +141%

BL4.5 T·m +9%

Xmax2.5 mm −4%

Sensitivity84.8 dB −3.6

Dayton AudioPS95-8

£22.10

Fs120 Hz –

Qts0.72 +14%

Vas0.9 L −47%

BL3.8 T·m −7%

Xmax2.5 mm −4%

Sensitivity85.1 dB −3.3

CIAREPA087

£24.28

Fs74 Hz −38%

Qts0.62 –

Vas2.2 L +25%

BL3.5 T·m −16%

Xmax2 mm −23%

Sensitivity83 dB −5.4

LavoceFSN030.71

£24.69

Fs134 Hz +12%

Qts0.67 +6%

Vas1.0 L −41%

BL3.8 T·m −7%

Xmax2.1 mm −19%

Sensitivity87.3 dB −1.1

Dayton AudioND90-8

£25.87

Fs71 Hz −41%

Qts0.65 +3%

Vas1.8 L –

BL4.3 T·m +4%

Xmax4 mm +54%

Sensitivity81.2 dB −7.2

Sica4 L 1 SL

£25.87

Fs108 Hz −10%

Qts0.63 –

Vas1.2 L −32%

BL5.1 T·m +24%

Xmax2.4 mm −8%

Sensitivity84.9 dB −3.5

Dayton AudioRS100P-8

£29.91

Fs96 Hz −20%

Qts0.54 −14%

Vas1.8 L +3%

BL4.0 T·m −4%

Xmax3.7 mm +42%

Sensitivity85.5 dB −2.9

Dayton AudioRS100-8

£29.91

Fs92 Hz −23%

Qts0.58 −8%

Vas1.4 L −19%

BL4.2 T·m –

Xmax3.5 mm +35%

Sensitivity83.7 dB −4.7

Dayton AudioND105-4

£30.48

Fs79 Hz −34%

Qts0.61 −3%

Vas2.0 L +12%

BL4.5 T·m +10%

Xmax4 mm +54%

Sensitivity83.7 dB −4.7

Tang BandW3-871SC

£30.90

Fs110 Hz −8%

Qts0.59 −6%

Vas1.6 L −6%

BL3.5 T·m −15%

Xmax0.5 mm −81%

Sensitivity86.9 dB −1.5

CIAREPA100

£30.98

Fs100 Hz −17%

Qts0.59 −6%

Vas2.5 L +42%

BL4.4 T·m +7%

Xmax2.5 mm −4%

Sensitivity87.6 dB −0.8

WavecorWF095WA02

£41.14

Fs86 Hz −28%

Qts0.62 –

Vas1.6 L −9%

BL3.6 T·m −13%

Xmax2.7 mm +4%

Sensitivity83.7 dB −4.7

WavecorWF095WA01

£41.14

Fs89 Hz −26%

Qts0.64 –

Vas1.5 L −15%

BL3 T·m −27%

Xmax2.7 mm +4%

Sensitivity83.8 dB −4.6

CelestionAN3510

£41.86

Fs113 Hz −5%

Qts0.65 –

Vas1.9 L +6%

BL4.6 T·m +11%

Xmax2.3 mm −13%

Sensitivity87.7 dB −0.7

Scanspeak10F/8414G10

£66.31

Fs100 Hz −17%

Qts0.51 −19%

Vas1.6 L −11%

BL4.3 T·m +4%

Xmax2.3 mm −12%

Sensitivity85.9 dB −2.5

VisatonB 80

£72.39

Fs110 Hz −8%

Qts0.63 –

Vas1.8 L –

BL4.2 T·m –

Xmax2.2 mm −15%

Sensitivity87.4 dB −1

Dayton AudioDMA90-8

No current price

Fs94 Hz −21%

Qts0.57 −10%

Vas1.7 L −3%

BL4.7 T·m +14%

Xmax2.5 mm −4%

Sensitivity84.9 dB −3.5

REDCATT35FR-2

No current price

Fs128 Hz +7%

Qts0.63 –

Vas1.1 L −35%

BL4.8 T·m +17%

Xmax2.4 mm −10%

Sensitivity87.5 dB −0.9

PeerlessTC10FG00-04

No current price

Fs160 Hz +33%

Qts0.65 +3%

Vas1.7 L −3%

BL3.4 T·m −18%

Xmax2.7 mm +4%

Sensitivity90.9 dB +2.5

Tang BandW3-532SQ

No current price

Fs100 Hz −17%

Qts0.61 −3%

Vas1.7 L −5%

BL3.5 T·m −14%

Xmax0.2 mm −92%

Sensitivity85.9 dB −2.5

Tang BandW3-582A

No current price

Fs100 Hz −17%

Qts0.60 −5%

Vas1.8 L –

BL3.6 T·m −14%

Xmax0.25 mm −90%

Sensitivity86.2 dB −2.2

Tang BandW3-1319SA

No current price

Fs110 Hz −8%

Qts0.55 −13%

Vas1.8 L –

BL3.5 T·m −14%

Xmax0.5 mm −81%

Sensitivity87.4 dB −1

EminenceALPHA 4-8

No current price

Fs123 Hz –

Qts0.75 +19%

Vas1.9 L +10%

BL4.9 T·m +20%

Xmax2.6 mm –

Sensitivity88.4 dB –

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Stock	Link
Lean Audio Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£16.26	Out of stock	Visit shop at Lean Audio
Lean Business Checked 15 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£32.88	Out of stock	Visit shop at Lean Business
Blue Aran Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20% 4-6 weeks	£42.77	Usually available in 4-6 weeks	Visit shop at Blue Aran