UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Ekco U353. Wax Capacitors and resistor replacement.

ms660 · 25th Jun 2021, 2:11 pm

One side of the loudspeaker in the Ekco U319 is also connected to chassis via a 0.01uF capacitor, so far as its function goes for the loudspeaker circuit I can only think that it's there for RF de-coupling purposes to prevent any RF picked up by an extension loudspeaker cable from being introduced into the -ve feedback winding and finding its way back to the input of the AF amplifier.

Lawrence.

25th Jun 2021, 2:11 pm	#30
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Ekco U353. Wax Capacitors. One side of the loudspeaker in the Ekco U319 is also connected to chassis via a 0.01uF capacitor, so far as its function goes for the loudspeaker circuit I can only think that it's there for RF de-coupling purposes to prevent any RF picked up by an extension loudspeaker cable from being introduced into the -ve feedback winding and finding its way back to the input of the AF amplifier. Lawrence.