ALPHA 4-8

LF Driver
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Overview

LF DriverALPHA series
Eminence

ALPHA 4-8

Size
4"
Impedance
8Ω
RMS Power
55W
Sensitivity
88dB
EBP
146
Vented alignment
Vd
15cm³
Datasheet

T/S Parameters

Valid
Manufacturer
Fs123Hz
Qts0.75
Qes0.84
Qms6.8
Vas1.9L
Re6.7Ω
Le0.28mH
BL4.9Tm
Sd58cm²
Mms4g
Xmax2.6mm
SPL88dB
Power55W
Impedance8Ω
F Low105Hz
F High12000Hz

Pricing & availability

Price movement

Other offers

1 vendor
bluearan
Updated 17 May 2026· 8Ω
Source: inc VAT · 20%
£47.92
inc VAT

Best current price

Updated 17 May 2026

leanaudio
£25.12
Avg £36.52£11.40 below avg (-31.2%)
inc VAT
Buy now

Dimensions & Physical

Weight0.7kg
Diameter116.1mm
Overall Depth58.7mm
Cutout Diameter95.8mm
Bolt Circle Diameter108.0mm

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ALPHA 4-8
Reference
Eminence
ALPHA 4-8
4"
Best current price
£25.12
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5 active T/S params, plus size.

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