LF driver · Extreme series · 56 mm voice coil · 250 W
SEAS XM001-04 L26ROY 4Ω
4 Ω · 20–1000 Hz
£367.07
SteadySoundImports · 2 in stock · All 1 offer
- Fs
- 25Hz
- Xmax
- 14mm
- SPL
- 85dB
- Pe
- 250W
- BL
- 12T·m
- Vd
- 479cm³
- Qts
- 0.42
- Vas
- 56L
Published graphs
SEAS XM001-04 L26ROY is a 4 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 25 Hz, Qts 0.42, Vas 56 L, Xmax 14 mm, sensitivity 84.9 dB, plus 479 cm³ Vd and 56 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £367.07.
The published T/S values agree with each other
Thiele/Small
- Fs
- 25Hz
- Qts
- 0.42
- Qes
- 0.45
- Qms
- 5.6
- Vas
- 56L
- Re
- 3.3Ω
- Le
- 0.73mH
Motor and cone
- BL
- 12T·m
- Sd
- 342cm²
- Mms
- 118g
- Xmax
- 14mm
- Vd †
- 479cm³
- Voice coil
- 56mm
- Flux density
- 1.20T
Power and response
- Sensitivity †
- 84.9dB
- Manufacturer sensitivity
- 87dB
- Power
- 250W
- Impedance
- 4Ω
- Range
- 20–1000Hz
- EBP †
- 56 · Sealed or vented
Size and mounting
- Weight
- 10kg
Other published values
- Cms
- 0.34mm/N
- Rms
- 3.31kg/s
- Xmech
- 28
- Power Peak
- 500
Sensitivity shows 84.9 dB, calculated from the T/S values. SEAS publishes 87.0 dB, 2.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else SEAS lists
LF · Primary
- BL
- 12T·m
- Fs
- 25Hz
- Le
- 0.73mH
- Re
- 3.3Ω
- Sd
- 342cm²
- Cms
- 0.34mm/N
- Mms
- 118g
- Qes
- 0.45
- Qms
- 5.6
- Qts
- 0.42
- Rms
- 3.31kg/s
- SPL
- 84.9dB
- Vas
- 56L
- Xmax
- 14mm
- Xmech
- 28
- Power
- 250W
- Impedance
- 4Ω
- Power Peak
- 500
- Flux density
- 1.20T
- Sensitivity
- 87dB
- Low limit
- 20Hz
- Calculated sensitivity †
- 84.9dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 87dB
- Voice coil
- 56mm
- Weight
- 10kg
02
Compare
Same-size drivers, compared with the XM001-04 L26ROY. Clear differences are green when better and red when worse.
This driverXM001-04 L26ROY
Best price
£367.07
Fs
25 Hz
Qts
0.42
Vas
56 L
BL
12 T·m
Xmax
14 mm
Sensitivity
84.9 dB
Power
250 W
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- SoundImports5.0 out of 56 ratings · Checked 2 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
SoundImports | £367.07, the lowest price | 2 in stock | Visit shop at SoundImports |
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Tracked since 1 Apr