300 Cycle Crossover Network
| Brand | Frazier |
| Manufacturer | International Electronics Corporation |
| Designer | Edmond May, J.A. Frazier |
| Function | Crossover |
| Produced | 1957 |
| Country | United States |
| Model ID | Symphony Crossover |
| Signal Path | Passive Hardware |
| Crossover Frequency | 300Hz |
| MSRP (1957) | $45 |
| Notes | Optional outboard crossover unit for use with Symphony speaker or Diva and Basso units. |