661C
| Brand | Altec Lansing, Altec |
| Manufacturer | Altec Lansing Corporation |
| Function | Microphone |
| Country | United States |
| Form Factor | Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 4.1 × 4.1 × 17.1 cm (W × H × D) |
| Weight | 0.7lbs |
| Frequency Response | 30Hz-15kHz |
| Element Type | Dynamic |
| Directivity Pattern | Omnidirectional |
| Output Impedance | 30/50Ω |
| Output Level | -55dBm/10dynes/cm² |
| Hum (Ref.: 10⁻³ Gauss) | -120dB |
| Finish | Brushed Chrome |