I have a Teac AG10D amp and Canton cd1movie speakers. Should the front speakers be set to large or small on the amp setup? The amp manual says set the speakers to large 'when they can fully reproduce sounds below 80hz.' According to the canton manual the centre/surround speaker range is 100....250000 hz. To me this sounds as though both the centre and surround should be set to small - could someone confirm this please?