670B
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Function | Microphone |
| Country | United States |
| Form Factor | Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 6.4 × 16.5 × 8.6 cm (W × H × D) |
| Weight | 1.25lbs |
| Frequency Response | 30Hz-16kHz ±4dB |
| Element Type | Ribbon |
| Directivity Patterns | 3 |
| Directivity Pattern | Cardioid, Dipole, Omnidirectional |
| Discrimination (Cardioid, Front-to-Back) | 15dB |
| Output Impedance | 30/50Ω, 150/250Ω |
| Output Level | -56dBm/10dynes/cm² |
| Hum (Ref.: 10⁻³ Gauss) | -130dB |
| Housing Construction | High Impact Styrene |
| Finish | Instrument Gray |