T/S Parameters
Valid
Fs28Hz
Qts0.37
Qes0.39
Qms6.9
Vas385.0L
Re5.4Ω
Le2.90mH
BL30.5Tm
Sd1700cm²
Mms355g
Xmax14.0mm
SPL97dB
Power2000W
Impedance8Ω
Min Impedance6.7Ω
F Low28Hz
F High1000Hz
Voice Coil114mm
Pricing & availability
Price movement
Best current price
Updated 17 May 2026
bluearan
£389.00
inc VAT
Dimensions & Physical
Weight15.5kg
Diameter547.0mm
Cutout Diameter512.0mm
Bolt Circle Diameter527.0mm
Similar Drivers
Keep size fixed, then add or remove T/S params to change the ranking and the comparison rows.
Reference
RCF
LF21X451
21"
Best current price
£389.00
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
Loading matches