Vibraphone Vibraphone The vibraphone (also known as the vibraharp or simply the vibes) is a musical instrument in the struck idiophone subfamily of the percussion family. It consists of tuned metal bars, and is usually played by holding two or four soft mallets and striking the bars. A person who plays the vibraphone is called a "vibraphonist" or "vibraharpist". The vibraphone resembles the xylophone, marimba, and glockenspiel, one of the main differences between it and these instruments being that each bar is paired with a resonator tube that has a motor-driven butterfly valve at its upper end. The valves are mounted
Which? supplement, which becomes "Motoring Which?" in 1965, followed by "Money Which?" in 1968. In 1970, "Which?" bought a set of buildings in Harpenden, Hertfordshire, to set up labs to test products including domestic appliances, DIY equipment, and consumer electronics. Previously, the work had been contracted out. The 1970s saw "Which?" taking a greater campaigning role, and it began to adopt a more aggressive stance on issues such as lead poisoning and aircraft noise. In 1971, for example, "Which?" published the first league table on the tar and nicotine content of cigarettes. The organisation also dabbled in high street consumer advice