AR-4x
| Brand | Acoustic Research |
| Function | Speaker |
| Produced | 1965-1973 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Analog Hardware |
| Brand | Acoustic Research |
| Function | Speaker |
| Produced | 1965-1973 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Analog Hardware |