Page 17 Advertisement 2

New Zealand Listener, Volume 19, Issue 472, 9 July 1948, Page 17

New Principles OF LOUDDSPEAKER DESICN Model 44 Features The New COLUMBUS Elliptical Loudspeaker Model 44 4 Cambridge "_7-valve 0 all-wave, (incorporating magic eye 4I tuning indicator) = and utilis- ing the new COLUMBUS 104" ELLIPTICAL Permanent magnet loudspeaker. Height: 144" ; Width: 194' 6 Depth: M" Price 84/10/- Ceda Vo 070 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 tho 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 enhanc: 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 resonant peaks 4 normally present in loudspeaker. In effect this means that the speaker is CQLUMBUS capable of 0 wider range of distortionless reproduction: RAD/0 NATION-WIDE SERVICE : Whangarei, Auckland, Hamilton, Paeroa, Rotorua, Taurange, Gisborne, Napier, Hasta ings; Dannevirke, Taihape, New Plymouth, Wanganui, Palmerston North, Masterton, Wellington, Blenheim, Nelson, Greymouth, Christchurch, Timaru, Oamaru, Dunedin, Gore, Invercargill: CZ