12" unit: Magnet 11,500 oersteds
bass resonance approximately 17Hz
5" mid range unit: Magnet 10,400 oersteds
1" treble Range unit: Magnet 12,000 oersteds
Moving cone mass 0.2 of a gram
crossover frequencies 450Hz and 3,000Hz
Power Handling capacity 35watt rms
Impedance: suitable for amplifier having an impedance between 4-8 ohms
frequency range: depends on cabinet size and construction but generally no worse than 40Hz-20,000Hz.
Have the complete assembly instructions so if you want can scan it
Mine are broken, and arrived here when searching if worth to replace parts
I built a pair in '70 or '71 and found the bass exceptional. I've since built better but want to use the 2 woofers as a sub-woofer and need the inside cabinet dimensions so I don't blow them. I'd love a scan of the instructions.