CORAL 12L-1

Commentary

This is a 30 cm cone woofer unit from the L series of Coral.

Alnico magnet is used for the magnetic circuit.

Around 1965, 16 Ω model and 200 Ω / 400 Ω high-impedance model were sold.
It seems that only the 8 Ω model was sold around 1970 which is the latter period.

Model Rating

Method	30 cm cone type woofer unit
Playback frequency band	Fo ~ 2.5 kHz
fo	40Hz
Sound pressure level	106dB
Input	25W
Impedance	8 Ω (Late Stage), 16 Ω (Early Stage) 200 Ω, 400 Ω (High Impedance Type)
Effective mass of vibration system	36g
Qo	0.38
Total flux	300,000maxwell
Weight	6.8kg