Model Five Series II
| Brand | Altec Lansing, Altec |
| Manufacturer | Altec Corporation |
| Function | Speaker |
| Produced | 1978 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 36.8 × 64.8 × 30.5 cm (W × H × D) |
| Weight | 32lbs (Net), 38.5lbs (Shipped) |
| Frequency Response | 45Hz-20kHz |
| Treble | 4" Paper Cone (x2) |
| Midrange/Bass | 12" Paper Cone |
| Sensitivity (500Hz-3kHz) | 91.5dB/W/4' |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 1.5kHz |
| Dispersion (Horizontal, 800Hz-8kHz) | 120° |
| Dispersion (Vertical, 800Hz-8kHz) | 90° |
| Recommended Amplifier Power | 12-150W |
| Maximum Output | 108dB |
| Power Handling | 45W |
| Enclosure Type | Bass Reflex |
| Finish | Walnut |
| MSRP (1978) | $189 |