The design came as a result of amendments to the European safety standard BS\EN600 65 for consumer electronics, which effectively bans the use of the 4mm 'banana' type plug commonly used for connecting loudspeakers to amplifiers. The reasoning behind the prohibition of cable-mounted 4mm (and smaller-sized) plugs is that they can be inserted into a European mains socket with possibly fatal consequences.
Okay thanks for the infoIf they are new they will have stoppers in them (this is due to the EU making all speaker & amp makers putting these in to prevent people from other EU countries trying to plug their mains plugs into the back of their amp/speaker for some strange reason) you may be able to pull said stoppers you with a pair of small long nose pliers or use a small self tapping screw, screw it in slightly & pull gently & said stopper will come out, job done.
type of connection to plug speakers into amp is it not?
Yeah but there are some plastic bits I can remove on the amp.I may be wrong but looking at the 2 bits of kit you mention, both seem to take 4mm banana plugs?
I was told by the guy I bought it off: There will either be some small plastic pieces that need to be eased out of the holes, or there will be plastic pieces covering the holes that the plugs should push through with a little bit of force.Do you mean you can unscrew and remove the black/red cap on the speaker terminal?
If so then that is normal, you would normally just tighten those down, remove the little plastic stopper thing (if present) covering the centre hole and then plug in the banana plug into the centre hole.