I have a limited space on a mantle piece to accomodate a centre speaker (approx 15cm H and approx 10cm Depth, length is not an issue). I appreciate that this will probably not offer me the greatest centre speaker in the world - but that's all I've got to work with. Can anyone recommend a mini centre speaker? I had considered getting hold of a centre speaker from one of those 5.1 sets shops sell - but am unsure of how to go about it. Help please!