Model Fourteen S
| Brand | KLH |
| Manufacturer | KLH Research & Development Corp. |
| Function | Speaker |
| Produced | 1964 |
| Country | United States |
| Model ID | Model Fourteen Slimline |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 35.6 × 45.7 × 9.5 cm (W × H × D) |
| Driver | 3" Paper Cone (x2) (Excursion: 0.37" peak-to-peak) |
| Impedance (Nominal) | 8Ω |
| Power Handling | 12W |
| Enclosure Type | Bass Reflex |
| Finish | Walnut |
| MSRP (1964) | $49.50 |
| Notes | Model Fourteen relabeled to prevent confusion with the newly introduced Model Fourteen B with traditional bookshelf styling. |