Crescendo (604E)
| Brand | Altec, Altec Lansing |
| Manufacturer | Electori Co. Ltd. |
| Function | Speaker |
| Produced | 1974 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 69 × 101.8 × 48.5 cm (W × H × D) |
| Driver | 15" Coaxial Horn/Paper Cone (Altec 604E) |
| Impedance (Nominal) | 8-16Ω |
| Crossover Frequency | 1.5kHz (Altec N-1500-A) |
| Power Handling | 35W |
| Enclosure Type | Bass Reflex |
| Notes | Japanese market specific model built by Altec for Electori. Variant with Altec 604E upgrade option. |