What is edison 20 cm bass?

As an AI language model, I don't have access to specific information about a product named "Edison 20 cm bass". However, I can provide general information about 20 cm bass speakers and Edison speakers.

A 20 cm (8-inch) bass speaker is a commonly used mid-sized speaker in many audio systems. It is typically used for mid-bass and sometimes for deep bass frequencies in small to medium-sized speakers.

Edison is a brand that manufactures a range of audio equipment, including speakers, headphones, and amplifiers. The company is known for producing affordable yet good quality audio products with modern designs.

Without specific information on the Edison 20 cm bass, it is hard to provide more detailed insight into this specific product.