Page 25 Advertisement 2

New Zealand Listener, Volume 18, Issue 464, 14 May 1948, Page 25

New Principles OF LOUDSPEAKER DESICN Model 44 Features The Vew COLUMBUS Elliptical Loudspeaker Model 4 I Cambridge "_~7-valve 00 all-wave, (incorporating magic eye 00 tuning indicator) , and utilis- ing the new COLUMBUS 10}" ELLIPTICAL permanent magnet loudspeaker. Height: 144" Width; 193' Depth: II" Price {4/1o/- UtrTrETU L Ioo Iam To0 Olls The new 10}"; elliptical loudspeaker used in Model 3. The type and shape of the speaker diaphragm 44 has three basic points of superiority: has the advantage of widening the area of even tonal distribution. This means that in whatever position the Ia The magnet incorporated in the' loudspeaker is listener may be sitting in relation to the radio, he will composed of a recently-discovered alloy which greatly enjoy a fuller tonal reproduction from its loudspeaker: increases its magnetic effect: Moreover, the; mass of the magnet used in the speaker is considerably greater We shall be pleased to enlarge upon these points at than is usual, with the result that this loudspeaker any time: possesses improved sensitivity with consequent enhance UNCONDITIONALLY GUARANTEED FOR 12 ing of its reproduction quality: MONTHS THROUGHOUT NEW ZEALAND 2. By adopting an elliptical shape; 8 type of loud: speaker diaphragm has been developed which effectively reduces the 0 resonant peaks II normally present in loudspeaker. In effect this means that the speaker is CQLOMBUS capable of 4 wider range of distortionless reproduction: RAD/O NATION-WIDE SERVICE 8 Whangarei, Auckland, Hamilton, Paeroa, Rotorua, Taurange, Gisborne , Napier, Hosta ings; Dannevirke, Taihape, New Plymouth, Wanganui, Palmerston North, Masterton, Wellington, Blenheim, Nelson, Greymouth, Christchurch, Timaru, Oamaru, Dunedin, Gore, Invercargill: CZ