Revel sub30 User Guide

SYSTEM OPTIMIZATION (Cont’d)

SELECTING CROSSOVER POINTS AND SLOPES

The ideal way to select crossover frequencies is by making in-room
acoustic measurements. The proper choice of crossover frequencies
can dramatically improve low-frequency smoothness and blending
of the main speakers with the subwoofer(s).

Begin by measuring the left and right speakers (together), without
any crossover. Then measure the center channel without a crossover
and the subwoofer(s) either without a crossover, or with the 
multi-channel controller’s subwoofer crossover set to the highest
available frequency. 

Use the results of the actual in-room measurements to examine the
responses of the left, center, and right speakers, and subwoofer(s)
below around 120 Hz. For example, if the subwoofer(s) exhibit a
large “dip” in response at 75 Hz, and the left and right speakers
have better response at 75 Hz, it would be wise to set the crossover
to 70 or even 60 Hz. In general, the crossover point should be set
as high as possible to optimize the system’s dynamic range and to
minimize distortion. 

Consult your Revel dealer for additional information on choosing
crossover frequencies and slopes.