Page 36 Advertisement 1

Radio Record, Volume III, Issue 33, 28 February 1930, Page 36

CENTRALAB CONTROLS To control the volume of a speaker without affecting the volume of other speakers con- nected to the same amplifier is the use of the Constant Input Resistance THE PHONOGRAPH PICKUP FADER is a noiseless volume control for two pickups: For every radio control there is 2 CENTRALAB. Write for Free Booklet, THOS. BALLINGER Co.s LTD: 58-62 VICTORIA STREET 88 WELLINGTON Where the Quality Goods are Sold: 12