Media
Size
21"
Impedance
8Ω
RMS Power
1000W
EBP
117
Vented alignment
Vd
1577cm³
T/S Parameters
Valid
Fs28Hz
Qts0.24
Qes0.24
Qms9.3
Vas385.0L
Re5.0Ω
Le2.85mH
BL33.5Tm
Sd1660cm²
Mms296g
Xmax9.5mm
Power1000W
Impedance8Ω
F Low24Hz
F High2000Hz
Pricing & availability
Price movement
Best current price
Updated 17 May 2026
leanbusiness
£426.63
inc VAT
Dimensions & Physical
Weight17.0kg
Diameter545.0mm
Overall Depth259.0mm
Cutout Diameter492.0mm
Bolt Circle Diameter520.0mm
Similar Drivers
Keep size fixed, then add or remove T/S params to change the ranking and the comparison rows.
Reference
Eighteen Sound
21LW1400
21"
Best current price
£426.63
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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