| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 35.6 × 63.5 × 35.6 cm (W × H × D) |
| Weight | 52lbs |
| Frequency Response | 40Hz-23kHz ±3dB |
| Treble | Heil (ESS) |
| Midrange/Bass | 10" Cone (ESS) |
| Passive Radiator | 10" (ESS) |
| Impedance (Nominal) | 6Ω |
| Crossover Frequency | 1.4kHz |
| Recommended Amplifier Power | >20W |
| Enclosure Type | Passive Radiator |
| Enclosure Construction | Particleboard |
| Finish | Walnut |
| MSRP (1977) | $295 |
| Controls |
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