SP-150
| Brand | Monarch |
| Manufacturer | Monarch Electronics International, Inc. |
| Function | Speaker |
| Produced | 1964 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Weight | 1.5lbs (Shipped) |
| Driver | 4" Paper Cone |
| Enclosure Construction | Plastic |
| Finish | Ivory, Beige, Yellow, Pink, Aqua, Cobalt |
| Distributor Price (1964) | $2.75 |