| Model ID | Sentinel Active Reference System |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 43.2 × 175.3 × 94 cm (W × H × D) |
| Weight | 910lbs |
| Frequency Response | 16Hz-100kHz ±1dB |
| Treble | 0.8" CVD Diamond Concave Dome (Accuton) |
| Midrange | 3.5" Ceramic Concave Dome (Accuton) |
| Midbass | 9" Nomex-Kevlar Composite Cone Woofer |
| Bass | 13" Nomex-Kevlar Composite Cone Woofer (x2) |
| Impedance (Nominal) | 4Ω |
| Impedance (Minimum) | 3.6Ω |
| Sensitivity | 88dB/2.83V/m |
| Recommended Amplifier Power | 100-1000W |
| Enclosure Type | Internal Aperiodic |
| Finish (Standard) | Figured Walnut, Quilted Cherry, Ash |
| Finish (Premium) | Curly Maple, Myrtle Cluster Burl, Walnut Cluster Burl |
| Connections | |
| Notes | Associated subwoofer amplifiers redesigned and encased in an enclosure shaped like the Avalon Acoustics logo. |
