

4-inch LF driver · FE series · 40 W
8 Ω · 200–8000 Hz
£36.93
SteadySoundImports · 6 in stock · Ships from Netherlands · All 6 offers
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
0 degrees
Frequency response
45 degrees
Frequency response
impedance
Impedance response
FaitalPRO 4FE44 is a 4-inch 8 ohm LF driver rated at 40 W RMS. The validated T/S data includes Fs 150 Hz, Qts 0.33, Vas 1.1 L, Xmax 1.7 mm, sensitivity 92.3 dB, plus 9 cm³ Vd and 429 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 £33.43.
The published T/S values agree with each other
† Calculated by bits from the published values
What this validation status means



























Choose the published values that matter to your design. Size stays matched to this driver.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
SoundImports Import VAT and duty may apply | £36.93, the lowest price | 6 in stock | Visit shop at SoundImports | |
Lean Audio | £24.50 | Back order | Visit shop at Lean Audio | |
Parts Express Import VAT and duty may apply | £47.39 | 28% above the lowest price | 4 in stock | Visit shop at Parts Express |
Tracked since 22 Jul