Model Twelve
| Brand | KLH |
| Manufacturer | KLH Research & Development Corp. |
| Function | Speaker |
| Produced | 1966 |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 56.5 × 73.7 × 38.1 cm (W × H × D) |
| Weight | 90lbs |
| Treble | 1.75" Paper Cone |
| Midrange | 3" Paper Cone (x2) |
| Bass | 12" Paper Cone |
| Impedance (Nominal) | 8Ω |
| Crossover Frequencies | 500Hz, 4kHz |
| Enclosure Type | Sealed |
| Enclosure Resonance | 35Hz |
| Enclosure Construction | 1" Plywood |
| Finish | Walnut |
| MSRP (1966) | $249.95 |
| Controls |
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