YAMAHA JA-3070

Commentary

30 cm cone shaped woofer unit.

It was recommended to use it in an airtight box of 50-70L.

Model Rating

Type	30 cm Cone Woofer
Nominal impedance	8 Ω
Playback frequency band	20 Hz to 2 kHz
Recommended bandwidth	20 Hz to 1 kHz
Rated input	100W
Max Input	200W
Output sound pressure level	93dB/W ・ m
Voice coil diameter	66.6 φ mm
Equivalent mass	99g
Qo	0.33
fo	20Hz
Magnet	Ferrite, 1.28 kg
Magnetic flux density	10,000gauss
Total flux	209,230maxwell
Recommended box capacity	50L ~ 70L
External dimensions	Diameter 383 mm x Height 138.5 mm
Weight	7.0kg