Pianos, guitars, banjos, and many other stringed instruments incorporate soundboards. Hobart M. Cable pianos are built using Alaskan Sitka spruce soundboards and Japanese hammer felt. Cheap pianos often have plywood soundboards. All were true acoustic pianos with soundboards. The soundboards of the marimba simple are made of wood such as cedar or cypress. Spinets also had smaller soundboards than regular harpsichords, and normally had a weaker sound. These repair methods are used on piano soundboards, wood instruments, and wood furniture. They have soundboards of skin and may also have hollow necks. This is the identical material that is used in quality acoustic guitar soundboards. Nomex is used in some classical guitar soundboards in order to create a "composite" top. There are a mixture of mechanical and electro-pneumatic actions and soundboards of differing compasses. It was cleaned and regulated and the soundboards were reconstructed. For example, soundboards seem to be primarily used for outbound telemarketing. It has one of the oldest soundboards still in use in the country. His wife often decorated the soundboards.