The short answer is you need to listen to recordings that have very little to no added reverb or prossesing added. You need to listen to a variety of music that uses the entire range of ALL instruments, from their lowest notes to their highest. You especially want music that covers the frequencies of the crossover points of the speakers your auditioning, to hear how phase related distortions change the sound of the instruments. It's a good idea to know what these instruments sound like live before you begin auditioning speakers. A trip to your local music store or attending un-amplified live shows will help there. Many audiophiles are somewhat suprised to hear the power and dynamic's of live instruments, even a flute can be powerfull. It's also VERY helpfull to know what recording engineers do to the music once it's recorded. While the best engineers would never reveal all the trade secrets, reading a magazine like "Tape-Op" or "Mix" will help. Buying a speaker based upon your preferences in sound may prove satisfactory short term, but in the long run, you'll likely be unsatisfied, unless of course your preference of sound is based upon years of hearing the sound of live, anamplified instruments. Good luck
