Ohm Speakers 
Specifications
- Production Period
- late 1970s - mid 1980s
- Nationally Advertised Price
- $350
- Amplifiers Recommended
- 25 - 100W
- Impedance (typical)
- 4Ω
- Frequency Response
- 100 - 12,000 Hz (+/-3dB)
- Sensitivity @2.8 Volts
- 90 dB
- Recommended Room Sizes
- 800 - 3200 cu.ft.
The Ohm M was the satellite part of Ohm’s first sub-woofer/satellite system as introduced in the mid 1970s. It had a metal cabinet, 4” woofer/mid-range and 1” dome tweeter. It was vented to increase the output headroom and had a built-in high pass filter. The sound of the system with the sub-woofer matched the high end Ohms but took up a tiny fraction of the space.
Ohm allows up to $350 for the return of a complete pair of undamaged Ohm Ms toward 25% of the purchase price for new Ohm speakers.