The Leevers-Rich 8-track tape machine, which could only record one track at a time.
A Philips tape machine being used to create a loop. Short loops, normally used to generate a rhythm, were created by running the tape around the 'dolly' at the back of the deck, as shown here. Longer loops required a loop stand. Note the short pieces of tape on the left, which were produced whilst making the loop.
Here two machines are both running loops.
The loops can be synchronised by temporarily stopping one machine and then opening the fader again to restart it.
Delia in a classic pose, with the rack of Jason oscillators to the right and a large-screen oscilloscope. The device to the rear is a BBC 'PA Stabiliser', actually an electronic phase shifter for reducing howl-round in public address systems, but also useful for special effects.
Delia at the Workshop in 1965.
Delia at the southern end of room 12, where she sits in front of the twelve Jason oscillators, an electromechanical frequency counter and the keying unit, as used to create the 'Doctor Who' theme. The dual gramophone turntable unit to her left is a BBC RP2/1.
The north end of Room 12 with the twelve Jason oscillators used to create the 'Doctor Who' theme on top of the mixing desk. To the right there are two PEUs, the B&K wobbulator, two 'Crystal Palaces', a small keyboard for the keying unit, the keying unit for the oscillators itself and an electronic organ. The small box with three switches controls the tape recorders.
