MACKIE 18" Powered Subwoofer HD 1801 - Manual (Page 7)

HD1801: STEREO 4-WAY SYSTEM WITH HD1531 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 HD1801 subwoofers. The Full Range output A of each subwoofer then feeds input A of
another pair of Mackie HD1801 subwoofers. The High Pass output A of these subwoofers then feed the
input of each Mackie HD1531 loudspeaker. Be sure to engage the Polarity Invert switch on the HD1801
subwoofers to optimize performance. See page 10 for more information.
NOTE: It is highly recommended that you use straps to secure your loudspeakers for stacked scenarios
such as this one. Be sure to loop a strap through each handle going down each side of the cabinet setup,
as shown above.
Left
line level
output
Right
line level
output
Line level
High Pass
output A
Line level
High Pass
output A
Full Range
output A
to HD1801
input A
Full Range
output A
to HD1801
input A
Power
Cord
Power
Cord
Power
Cord
Power
Cord
Power
Cord
Power
Cord
HD1801 subwoofers
reproduce the low
frequencies
HD1801 subwoofers
reproduce the low
frequencies
Onyx 1640i
Mixer
HD1531
reproduces all
frequencies
above the
subwoofers’
crossover point
HD1531
reproduces all
frequencies
above the
subwoofers’
crossover point
to HD1801
inputs A
Straps Straps
7
Owner’s Manual
Owner’
s Manual