AR-11
| Manufacturer | Acoustic Research |
| Function | Speaker |
| Produced | 1975 |
| Country | USA |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Analog Hardware |
| Dimensions | 35.4 × 63.5 × 27.3 cm (W × H × D) |
| Weight | 49.75lbs |
| Treble | 0.75" Dome |
| Midrange | 1.5" Dome |
| Bass | 12" Paper Cone |
| Sensitivity | 86dB/W/m |
| Impedance (Nominal) | 4Ω |
| Crossover Frequencies | 525Hz, 5kHz |
| Recommended Amplifier Power | >25W |
| Power Handling | 150W |
| Enclosure Type | Sealed |
| System Resonance | 42Hz |
| System Q | 0.7 |
| Enclosure Volume | 41.9l |
| MSRP (1977) | $350 |