Imperial 9
| Brand | Marantz |
| Manufacturer | Superscope, Inc. |
| Function | Speaker |
| Produced | 1975 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 61 × 77.5 × 45.7 cm (W × H × D) |
| Frequency Response | 30Hz-20kHz ±3dB |
| Treble | 1.75" Paper Cone (x2) (Phenolic Ring, Outer Diameter: 3.5") |
| Treble | 2" Paper Cone (x4) |
| Bass | 10" Paper Cone (x2) |
| Sensitivity | 94dB/W/m |
| Sensitivity | 97dB/W/0.5m |
| Impedance (Nominal) | 8Ω |
| Power Handling (Nominal, IHF) | 100W |
| Power Handling (Music, IHF) | 150W |
| Enclosure Type | Bass Reflex |
| MSRP (1975) | $499.95 |