Imperial 4G
| Brand | Marantz |
| Manufacturer | Superscope, Inc. |
| Function | Speaker |
| Produced | 1973 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 28.6 × 48.8 × 21.6 cm (W × H × D) |
| Weight | 20lbs |
| Frequency Response | 40Hz-18kHz ±5dB |
| Treble | 1.75" Paper Cone (Phenolic Ring, Outer Diameter: 3.5") |
| Midrange/Bass | 8" Paper Cone |
| Sensitivity (1kHz) | 95dB/W/0.5m |
| Impedance (Nominal) | 8Ω |
| Power Handling (Nominal, IHF) | 15W |
| Crossover Frequency | 2kHz |
| Power Handling (Music, IHF) | 40W |
| Enclosure Type | Sealed |
| Enclosure Volume | 30l |
| Enclosure Resonance | 85Hz |
| Finish | Walnut-grain Vinyl |
| MSRP (1975) | $59.95 |