Hi. I bought a valve radio chassis (McMichael 501AC) and it came without the loudspeaker (would have been 30 Ohms) and audio output transformer. The power output is a push-pull arrangement, and the circuit shows a pair of KT61's. The valves in the set I've bought are a pair of EL33's. I'm not sure if any circuit mods were made to accommodate these EL33's. Anyhow, is it likely going to be difficult to source a suitable audio output transformer? Thank you. Rich
OK, not so difficult to source one, firms do make them for tube amplifiers I see. Can be expensive though for the premium makes. Then we have Ebay, things turn of there. I suppose my major issue could be simply identifying the power rating required. I think I read two EL33's in push pull will output 8 watts.