A buddy of mine managed to pick up a mint pair of 3a M3's that included all the original paperwork including the User Manual's and Sales Brochures. I've managed to scan and save them in pdf format. If interested pm me and I'll send you a copy.
From the User Manual here are the specs:
MM:
RMS Power: 80 watts
Efficiency: 91(1w/1m)dB
Impedance: 8 Ohms
Distortion: 0.4 (NF. 97405) 94dB at 1KHz
Frequency range: 50-25,000hz
Tweeter: Soft dome (Vifa D26TG)
Woofer: Type - G 126 H
Cone - Carbon
Voice Coil - Alu 17mm
Crossover: Bass Midrange - Direct Couple
Midrange Tweeter - 3 KHz (4.5 +12 dB)
Dimensions HxWxL(cm): 38x25x28/35
Form: Monitor
Rec. Amp Power: 30-100w
M1:
RMS Power: 100 watts
Efficiency: 92(1w/1m)dB
Impedance: 8 Ohms
Distortion: 0.3 (NF. 97405) 94dB at 1KHz
Frequency range: 40-25,000hz
Tweeter: Soft dome (Vifa D26TG)
Woofer: Type - G 128 H
Cone - Carbon
Voice Coil - Alu 14mm
Crossover: Bass Midrange - Direct Couple
Midrange Tweeter - 3 KHz (4.5 +12 dB)
Dimensions HxWxL(cm): 70x25x32.5
Form: Floorstanding
Rec. Amp Power: 30-120w
M2:
RMS Power: 100 watts
Efficiency: 92(1w/1m)dB
Impedance: 8 Ohms
Distortion: 0.3 (NF. 97405) 94dB at 1KHz
Frequency range: 40-25,000hz
Tweeter: Soft dome (Morel MDT 32)
Woofer: Type - G 128 H
Cone - Carbon
Voice Coil - Alu 14mm
Crossover: Bass Midrange - Direct Couple
Midrange Tweeter - 3 KHz (4.5 +12 dB)
Dimensions HxWxL(cm): 90x25x15/29
Form: Floorstanding
Rec. Amp Power: 30-120w
M3:
RMS Power: 120 watts
Efficiency: 92(1w/1m)dB
Impedance: 8 Ohms
Distortion: 0.3 (NF. 97405) 94dB at 1KHz
Frequency range: 30-25,000hz
Tweeter: Soft dome (Vifa D26TG)
Midrange: 1xCone
Woofer: Type - G 128 H
Cone - Carbon
Voice Coil - Alu 14mm
Crossover: Bass Midrange - 500Hz/6db
Midrange Tweeter - 5 KHz /6db
Dimensions HxWxL(cm): 90x28x22/40.5
Form: Floorstanding
Rec. Amp Power: 50-150w
M5/MS5:
RMS Power: 180 watts
Efficiency: 89(1w/1m)dB
Impedance: 4 Ohms
Distortion: 0.3 (NF. 97405) 94dB at 1KHz
Frequency range: 30-25,000hz
Tweeter: Soft dome (Vifa D26TG)
Midrange: 2xCone
Woofer: Type - W 120 x2
Cone - Cellulose
Voice Coil - Alu
Crossover: Bass Midrange - 120Hz/18db+6db
600Hz/6dB
Midrange Tweeter - 7 KHz /6db
Dimensions HxWxL(cm): 105x31.5x37
Form: Floorstanding
Rec. Amp Power: 50-200w
Cheers!
Rolly
