650B
| Brand | Altec Lansing, Altec |
| Manufacturer | Altec Lansing Corporation |
| Function | Microphone |
| Produced | 1970 |
| Country | United States |
| Form Factor | Handheld / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 4.4 × 4.4 × 18.4 cm (W × H × D) |
| Frequency Response | 50Hz-15kHz |
| Element Type | Dynamic |
| Directivity Pattern | Cardioid |
| Average Discrimination (Front-to-Back) | 20dB |
| Diaphragm | Mylar |
| Output Impedance | 150/250Ω |
| Output Level | -56dBm/10dynes/cm² |
| Hum (ref. 10⁻² gauss) | -120dB |
| Finish | Satin Chrome |
| MSRP (1971) | $122.50 |