T/S Parameters
Valid
Fs30Hz
Qts0.26
Qes0.27
Qms6.1
Vas375.0L
Re5.6Ω
Le3.00mH
BL34.5Tm
Sd1700cm²
Mms315g
Xmax13.0mm
SPL99dB
Power1500W
Impedance8Ω
Min Impedance7.1Ω
F Low30Hz
F High1000Hz
Voice Coil114mm
Pricing & availability
Price movement
Other offers
2 vendorsbluearan
Updated 17 May 2026· 8Ω
Source: inc VAT · 20%
£475.00
inc VAT
leanbusiness
Updated 17 May 2026· 8Ω
Source: inc VAT · 20%
£506.65
inc VAT
Best current price
Updated 17 May 2026
leanbusiness
£371.37
Avg £451.01£79.64 below avg (-17.7%)
inc VAT
Dimensions & Physical
Weight10.9kg
Diameter547.0mm
Cutout Diameter512.0mm
Bolt Circle Diameter527.0mm
Similar Drivers
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Reference
RCF
LF21N451
21"
Best current price
£371.37
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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