Speed

Just got a pair of Chorus 2's on ebay. I have had klf 10's for 12 years. The klf's seem to sound a bit brighter, a little cleaner at times like when a guitar is solo ect. Chous are powerful , maybe a little laid back sounding. Just wondered if this is normal sounding, as I have never heard them before. I put my ears against tweeters and can't tell if the sound is coming through , or if the midrange. Where do I start checking ?