During the initial design stage of a new loudspeaker system, the inability of many compact bookshelf loudspeaker systems to reproduce, with realism, the -impact- sounds of percussion instruments was related in part to the acoustic response shape. An acoustic method of increasing the output in the 200 to 600 Hz range was found in the mutual coupling of two woofers. Woofer and tweeter design and the effects of mounting on tweeter response are discussed. Crossover technique and the effects upon acoustic output due to driver phasing are also discussed.
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