victortaylor said:
Just going a bit further WE're looking at pylehome PT39OAU But feel this might be a bit under powered for the room size ( approx 12m x 8m ) what do you think ?? Any good advice is desperately needed
Victor, as pointed out by others, you are going down the wrong route. Home HiFi won't have the facilities you need. There are budget PA systems available for not a lot of money that will have multiple balanced mic inputs, stand a bit of knocking around and are designed for exactly your situation.
If you are willing to risk fleabay, just seach for 'pa system' - there is everything from kids toy pa systems for a few quid, to a complete package for an outdoor concert.
If fleabay is a step too far, try reputable pro audio stores - your requirement is exactly their bread and butter and they have packages available from a couple of hundred quid upward.
One point is that most budget pa systems will only come with two speakers. If you need 4, then buy two systems and daisychain the amps. This will have the advantage of being able to set the volume of the 'b' speakers separately.