Reference Standard 1.5
| Brand | Infinity |
| Function | Speaker |
| Produced | 1978 |
| Country | United States |
| Model ID | RS1.5 |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 38.1 × 67.3 × 27.9 cm (W × H × D) |
| Frequency Response | 38Hz-32kHz ±3dB |
| Tweeter | EMIT* (PN 902-0484) |
| Midrange | 5" polypropylene cone (PN 902-0632) |
| Woofer | 12" Watkins Dual-Drive Woofer (PN 902-1180) |
| Crossover Frequencies | 250Hz, 5kHz |
| Recommended Amplifier | 60-250W |
| Connections |
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| Controls |
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| Notes | *Electromagnetic Induction Tweeter |