| Model ID | HPM-100/U1 |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 39.1 × 67.1 × 39.4 cm (W × H × D) |
| Weight | 58.8lbs |
| Frequency Response | 30Hz-25kHz |
| Supertweeter | 180° Piezoelectric (High Polymer Molecular film, Part #HP-015A) |
| Treble | 1.75" Paper Cone (Part #45-711B) |
| Midrange | 4" Paper Cone (Part #10-721B) |
| Bass | 12" Carbon fiber Blended Cone (Part #30-733B) |
| Impedance (Nominal) | 8Ω |
| Sensitivity | 92.5dB/W/m |
| Crossover Frequencies | 3kHz, 4kHz, 12kHz (Network Assembly Part #SWN-158) |
| Crossover Slope | 6dB/Oct (First Order) |
| Power Handling (Nominal) | 100W |
| Power Handling (Peak) | 200W |
| Enclosure Type | Bass Reflex |
| Enclosure Construction | Particleboard |
| Finish | Oiled Walnut |
| MSRP (1980) | $350 |
| Connections | |
| Controls | - Midrange Level · Rotary Pot
- Treble Level · Rotary Pot
|
| Notes | Revision uprating power handling from 100W peak to 200W peak. Changes made to drivers and crossover making the parts not interchangeable with the original version. Tweeters now connected in reverse polarity. Identifiable by the addition of an aluminum trim ring to the reflex port, listed power rating and stamped reference mark 'Q' on rear of cabinet and box on non-U models. |
