HIFI 5.25 Inch Subwoofer Speaker 3-way Frequency Woofer Bass Speaker Low Frequency Powerful .
Speaker category: Subwoofer woofer speaker .
Rated impedance:4 OHM(if need 8 ohm , please contact to me or note , thanks.)
Rated power: 60W .
Maximum power: 120W .
Frequency response range: 67Hz-2.2KHz .
Sensitivity: 89dB±3dB .
Equivalent volume: 9.8L .
Qts: 0.35 .
Fo: 67Hz .
Recommended application: subwoofer/3-way frequency .
Sound cone material: fiberglass .
Magnet material: powder magnet Y35 .
Maximum outer diameter: 151.5mm .
Speaker height: 78mm .
Screw diagonal: 140mm .
Voice coil diameter: 30mm .
Speaker net weight: 1.5Kg .
Characteristic:
1.Original glass fiber diaphragm .
2.A grade rubber suspension edge.
3.Linear piston type large stroke design .
4.The high-grade large magnetic circuit design is the engine of the speaker.
Package :1pc.















a***r –
After a 30-minute break-in with a 20–2000 Hz sweep at 70 dB, the attached image shows the real frequency response and the calculated T/S parameters. Overall, a solid chassis with great DSP amp potential. In a 6L box with two 5.25″ passive radiators, I tuned it to 38 Hz (-3 dB)—sounds really good. TS Parameters file Room EQ V5.40 Beta 102 Dated: 13.10.2025 15:52:41 From measurement L+R 205 Zmin 4.40 ohm fmin 206 Hz f3 463 Hz Le(f3) 1.219 mH Motional impedance parameters R0 47.71 ohm CMES 319.3 uF L0 20.745 mH beta 0.1229 omega0 561.5 Blocked impedance parameters RDC 5.00 ohm dR -1.39 ohm Re 3.61 ohm Leb 253.4 uH Le 2.176 mH Rss 99.6 ohm Ke 0.1947 S-H Thiele-Small parameters fs 59.3 Hz Qms 3.461 Qes 0.430 Qts 0.382 Fts 155.2 Mms 22.40 g Cms 0.321 mm/N Rms 2.412 kg/s Vas 3.69 litres Bl 8.376 Tm Eta 0.17 % Lp (1W/1m) 84.59 dB Dd 10.70 cm Sd 89.9 cm^2 Added mass measurement: L+R 206