Audiophilepure

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“The EQ, of course, affects only frequencies below the crossover frequency to the subwoofer (I chose 80Hz). And most audiophile preamps don’t offer the ability to deal with a subwoofer, which is best used when both high- and low-pass filters are available. You can drive the AF-61s full range and simply cross over the subwoofer itself at a low-pass frequency selectable in the app, but that could well make it more difficult to blend the outputs of the sub and AF-61s. This arrangement, in which both the main speakers and the subwoofer overlap across a wide range in the midbass, is one reason audiophiles often have problems incorporating a sub, abandon the effort, and become convinced that subwoofers have no place in audiophilia.”

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