US-4
| Brand | Heathkit |
| Manufacturer | Heath Company, Daystrom, Incorporated |
| Function | Speaker |
| Country | United States |
| Model ID | Dual Cone Speaker |
| Form Factor | Part |
| Signal Path | Passive Hardware |
| Dimensions | 20.3 × 20.3 × 0 cm (W × H × D) |
| Weight | 2lbs (Shipped) |
| Frequency Response | 60Hz-15kHz |
| Impedance (Nominal) | 8Ω |
| Power Handling | 8W |
| MSRP (1960) | $6.95 |