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HD1501: STEREO 4-WAY SYSTEM WITH HD1521 LOUDSPEAKERS AND DUAL SUBWOOFERS
This diagram shows the left and right line level outputs of a Mackie Onyx 1640i mixer feeding input
A of two Mackie HD1501 subwoofers. The Full Range output A of each subwoofer then feeds input A
of another pair of Mackie HD1501 subwoofers. The High Pass output A of these subwoofers also feed
the input of each Mackie HD1521 loudspeaker. Be sure to disengage the Polarity Invert switch on the
HD1501 subwoofers to optimize performance. See page 10 for more information.
Line level
High Pass
output A
Line level
High Pass
output A
Full Range output A to HD1501 input A
Po wer
Cord
Po wer
Cord
Po wer
Cord
HD1501 subwoofers
reproduce the low
frequencies
Full Range output A to HD1501 input A
HD1501 subwoofers
reproduce the low
frequencies
Po wer
Cord
Po wer
Cord
Po wer
Cord
Left
line level
output
Right
line level
output
Onyx 1640i
Mixer
to HD1501
inputs A
HD1521 reproduces
all frequencies
above the subwoofer’s
crossover point
HD1521 reproduces
all frequencies
above the subwoofer’s
crossover point
6
HD1501
HD1501