T/S Parameters
Valid
Fs39Hz
Qts0.24
Qes0.25
Qms6.5
Vas9.9L
Re3.9Ω
Le0.26mH
BL8.1Tm
Sd85cm²
Mms17g
Xmax2.9mm
SPL85dB
Power70W
Impedance4Ω
Min Impedance4.4Ω
Xover200Hz
Voice Coil39mm
Pricing & availability
Price movement
Best current price
Updated 17 May 2026
soundimports
£346.43
inc VAT
Dimensions & Physical
Weight1.8kg
Diameter147.0mm
Cutout Diameter101.0mm
Bolt Circle Diameter138.0mm
Similar Drivers
Keep size fixed, then add or remove T/S params to change the ranking and the comparison rows.
Reference
Purifi
PTT5.25M04-NAA-05
5.25"
Best current price
£346.43
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Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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