BBC MX/29 passive mixer

Part of the OBA/9, the MX/29 incorporated 4 passive constant impedance attenuators.

Utilised across the BBC during the Fifties, the one in the photo below was the original mixer for the Radio One Roadshow which launched in 1967.

OBA 9 mixer

The Manchester Playhouse, home to the Northern Dance Orchestra, utilised an array of BBC OB equipment, including no less than 5 x MX/29s as seen on the RHS of the picture below


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