I have a 1979 Stern Magic that was my grandfathers. It quit working around 1994 (MPU and Rectifier) It's been in a shed in Florida since. I've rebuilt a new rectifier, and am repairing the MPU, and everything else the time has destroyed. The speaker is dry rotted, and has a hole in it, and I cannot read any of the info on it. My schematics have no information on the speaker. I've removed and measured it. It's 6 inches, and reads 5.7 ohms across it. I've had someone tell me its supposed to be an 8 ohm 4 watt speaker. does anyone know what is supposed to be in here, and where I can buy one? Thanks

Thank you very much.