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How to isolate bookshelf speakers on a bookshelf

Yes, I know that bookshelf speakers should never be placed in a bookshelf. My situation is a bit limiting. I temporarily need to place my Triangle Titus 202 speakers on the top of a 30-inch high wood credenza/bookshelf, which runs the entire length of the wall.

So they are surrounded by air on the top and sides, and are about 8 inches from the wall.

What is the best way to improve the sound? Should I isolate the speakers from the base using bits of Blu-Tack, or use isolation cones?

Since this set-up will only last a year or so, I don't want to invest too much $$$, but do need to improve the sound.

Also, what are the acoustic reasons why placing the speakers on the top of a shelf degrades the sound versus using quality speaker stands? Is it that there is room for the sound waves to move more freely, or that the speaker cabinet needs to be isolate from resonant objects? Or both?

Thanks.
kixo

Showing 1 response by artmaltman

artmaltman
769 posts
 
I've used Black Diamond Racing Cones and liked it. Also examine the stuff at Herbie's Audio Lab. All these are not very expensive and sell used for 60% of list in a heartbeat so your overall out of pocket will be very low.

With monitors on bookshelves you lose imaging but the tonality can sound fantastic if you correct for bass issues.

I'm assuming that your speakers are FRONT-PORTED.

If they are rear ported you will need to do a lot of experimentation with angles and distance from wall, and, may just end up with a compromise.

Usher s520 are front ported and beautiful in black and sound very lovely, AND seem to hold their used value, in case you need to make a purchase to get you through this year.

Art
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