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Getting overtone in a pair of bookshelf speaker.

I just bought a pair of Music Hall Marimba bookshelf speakers, and currently experimenting with placement. I changed the previous height of the tweeter by placing two books under each cabinet. During the first listening session, they sounded OK, but now today after the changes made, they sounded crinkly in the high end with somewhat of hollow overtone in the midrange.

I do not expect them to pressurize a 12X14 room with full sound, but I am a bit disappointed at the tonal balance. I have them about 4 ft from the side walls and 15 inches from back wall which is glass, but has slat shades that can be closed. They are approx 5 ft apart and occupy the far end of the long axis. Need suggestions on how to find ideal tonal balance. Thanks
sunnyjim
zd542
5,339 posts
 
"MoFI, the Marimbas have about 7 hours on them, so I am far from Nirvana"

You need to put a lot more time on your speakers before you even listen to them. With only 7 hours on them, you should be able to hear a noticable difference in how they sound every few hours. At 30 to 40 hours they should start to level off, but you need to put at least 100 hours on them before you judge anything. Use white of pink noise at moderate volumes if you can.

What kind of amp do you have?
hesson11
237 posts
 
Have you tried a little bit of single-malt Scotch?
sunnyjim OP
927 posts
 
TO ZB542, The amps are a pair Red Dragon digital monoblocks, and a Bel Canto PRe3 line stage. Speaker cable: Audio Art SC-5 (not special edition, that is the SE version)
quad-man's avatar
quad-man
131 posts
 
1800 hours of break in will improve them..then you can go out and buy some good speakers!
rrog
1,958 posts
 
Jim, You mentioned the speakers sounded ok until you raised them up. Maybe you should lower the speakers to their original height and just listen for a while as your new speakers break in.
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