AS-9520
| Brand | Heathkit |
| Manufacturer | Heath Company, Schlumberger Limited, Kef |
| Function | Speaker (Kit) |
| Produced | 1974 |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 30.5 × 50.8 × 25.4 cm (W × H × D) |
| Weight | 11.5kg |
| Frequency Response | 35Hz-20kHz |
| Treble | 1" Aluminized Melinex Dome (KEF T15) |
| Midrange/Bass | 8" Bextrene Cone (KEF B200) |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 3kHz |
| Power Handling (Nominal) | 20W |
| Power Handling (Peak) | 25W |
| Enclosure Type | Sealed |
| Finish | Walnut, Teak |
| MSRP (1974) | DM 275 |