The average spinet piano weighs in at 300 to 500 pounds compared to full-size upright pianos that average around 700 pounds. A spinet is any type of smaller keyboard instrument, such as a piano or organ.
Spinet pianos can usually be identified by their height. Pianos 40 inches and shorter are spinets, those 41 to 44 inches tall are considered console pianos, and those 45 inches and taller are called studio upright pianos. Spinet pianos were primarily manufactured between the 1930s and the 1990s. One of the primary reasons the instrument went out of style was the inferiority of its sound.