LF driver · Extreme series · 56 mm voice coil · 250 W
SEAS XM004-04 L26RO4Y 4Ω
4 Ω · 20–1000 Hz
No current price
- Fs
- 26Hz
- Xmax
- 15mm
- SPL
- 86dB
- Pe
- 250W
- BL
- 17.7T·m
- Vd
- 513cm³
- Qts
- 0.27
- Vas
- 40L
Published graphs
SEAS XM004-04 L26RO4Y is a 4 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 26 Hz, Qts 0.27, Vas 40 L, Xmax 15 mm, sensitivity 85.9 dB, plus 513 cm³ Vd and 90 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
- 26Hz
- Qts
- 0.27
- Qes
- 0.29
- Qms
- 3.9
- Vas
- 40L
- Re
- 3.5Ω
- Le
- 2.33mH
Motor and cone
- BL
- 17.7T·m
- Sd
- 342cm²
- Mms
- 160g
- Xmax
- 15mm
- Vd †
- 513cm³
- Voice coil
- 56mm
- Flux density
- 0.90T
Power and response
- Sensitivity †
- 85.9dB
- Manufacturer sensitivity
- 86dB
- Power
- 250W
- Impedance
- 4Ω
- Range
- 20–1000Hz
- EBP †
- 90 · Sealed or vented
Size and mounting
- Weight
- 10kg
Other published values
- Cms
- 0.24mm/N
- Rms
- 6.53kg/s
- Xmech
- 28
- Power Peak
- 500
† Calculated by bits from the published values
What this validation status means
Everything else SEAS lists
LF · Primary
- BL
- 17.7T·m
- Fs
- 26Hz
- Le
- 2.33mH
- Re
- 3.5Ω
- Sd
- 342cm²
- Cms
- 0.24mm/N
- Mms
- 160g
- Qes
- 0.29
- Qms
- 3.9
- Qts
- 0.27
- Rms
- 6.53kg/s
- SPL
- 85.9dB
- Vas
- 40L
- Xmax
- 15mm
- Xmech
- 28
- Power
- 250W
- Impedance
- 4Ω
- Power Peak
- 500
- Flux density
- 0.90T
- Sensitivity
- 86dB
- Low limit
- 20Hz
- Calculated sensitivity †
- 85.9dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 86dB
- Voice coil
- 56mm
- Weight
- 10kg
02
Compare
Same-size drivers, compared with the XM004-04 L26RO4Y. Clear differences are green when better and red when worse.
This driverXM004-04 L26RO4Y
Best price
–
Fs
26 Hz
Qts
0.27
Vas
40 L
BL
17.7 T·m
Xmax
15 mm
Sensitivity
85.9 dB
Power
250 W
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Qts
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- SoundImports4.8 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 | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr