I salvaged one of these from an S-53 rcvr. The S-53 uses a 6K6 audio amp tube to a 4 ohm speaker. I am building a Class A audio amp using a 6V6 amp tube to a 4 ohm speaker. About 4.5-5 watts. Can this audio output Xfrmr be reused using the 6V6 tube? Thanks, Mike KL7CD Sent from my iPhone