Hybrid Networks
Before I proceed further, it is important to note
that this is a hybrid design. By that, I mean
the crossover is active (from the Synergy) while
passive components are used to contour the frequency
response of the drivers.
Some
may argue that it makes more sense to go active
all the way. Surely 1/3 octave graphic EQs have
finer control than passive networks. This is a valid
argument but for the sake of sonic purity, I prefer
to keep the electronics minimal. Graphic EQs are
extremely intrusive. While they are indispensable
for prosound, they have no place in HiFi.
Acoustic Crossover
Fig
4 shows the Gated Response of the RS108s and the
PDS382/H07E combo. Though the Synergy 18dB/oct crossover
was set for 2,250Hz, the final acoustic slope of
the RS180s is about 20dB/oct. The PDS382, on the
other hand, is about 22dB/oct.
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