654A
| Brand | Altec Lansing, Altec |
| Manufacturer | Altec Corporation |
| Function | Microphone |
| Produced | 1976 |
| Country | United States |
| Form Factor | Handheld / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 5.1 × 5.1 × 18.4 cm (W × H × D) |
| Weight | 0.5lbs |
| Frequency Response | 50Hz-15kHz |
| Element Type | Moving Coil Dynamic |
| Directivity Pattern | Cardioid |
| Discrimination (Front-to-Back) | 20dB |
| Output Impedance | 200Ω |
| Output Level | -56dBm/10dynes/cm² |
| Hum (Ref. 10⁻³ Gauss) | -120dB |
| Finish | Matte Satin Nickel |
| MSRP (1976) | $126 |