660B
| Brand | Altec Lansing, Altec |
| Manufacturer | Altec Lansing Corporation |
| Function | Microphone |
| Produced | 1953 |
| Country | United States |
| Form Factor | Handheld / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 4.3 × 4.3 × 10.2 cm (W × H × D) |
| Weight | 0.7lbs |
| Frequency Response | 35Hz-12kHz |
| Element Type | Dynamic |
| Directivity Pattern | Omnidirectional |
| Output Impedance | 30Ω, 150/250Ω, 20kΩ |
| Output Level | -57dBm/10dynes/cm² |
| Finish | Satin Silver (Aluminum) |
| MSRP (1953) | $49.50 |