Mackie HD1501 User Manual

These female XLR connectors accept balanced

line-level signals from a mixing console or other signal 
source.

If you are connecting a single subwoofer output, or 

LFE (low-frequency effects) output to the subwoofer, 
you may use either the A or B input connector.

CAUTION: NEVER connect the output of an 
amplifier directly to the input of the  

 

subwoofer. This could damage the input  
circuitry of the powered subwoofer.

Balanced XLR male connectors are provided for the

line-level A and B high-pass outputs. The subwoofer’s
internal active crossover splits the input signals into 
two frequency bands. The low frequency range below 
100 Hz goes to the internal amplifier that powers the 
subwoofer. The frequency range above 100 Hz is sent to 
these line-level output jacks.

Connect these outputs to the inputs of your main 

powered loudspeakers, or to the inputs of the amplifier 
powering the main loudspeakers. In this way, the main 
loudspeakers will play the range above 100 Hz. If the 
main loudspeakers have good low-frequency response, 
then you may decide to use the full-range outputs (5) 
instead.

The level control and polarity switch have no effect 

on the high-pass outputs. The outputs are separate and 
maintain the stereo separation of the input signals.

Balanced XLR male connectors are provided for the

line-level A and B full-range outputs. Connect these
outputs to the inputs of another powered subwoofer, 
main powered loudspeakers, or to an amplifier powering 
passive loudspeakers. 

The signal at these outputs is a direct copy of the 

input signals. These outputs allow you to daisy-chain 
multiple subwoofers, and/or send the full-range signals
to the main loudspeakers.

The level control and polarity switch have no effect 

on the full-range outputs. The outputs are separate and 
maintain the stereo separation of the input signals.

Press this switch in to invert subwoofer polarity. 

Depending on the placement of the HD1501 subwoofer 
relative to the full-range speakers, you may get a better 
low-frequency response if you invert the polarity of the 
subwoofer’s signal. See page 10 for more information.

Press this switch in to turn on the front panel power 

LED if a visual indicator is preferred. The LED next to 
the switch will light as a reminder.

If this switch is out, and the HD1501 is turned on, the 

LED on the front of the cabinet will not light, nor will 
the LED next to the switch.

This controls the overall signal level at the input to 

the built-in power amplifier. It ranges from –6 dB to
+6 dB of gain. The center detent is 0 dB (unity gain).

This control has no effect on the level of the High 

Pass Outputs (4) or the Full Range Outputs (5).

WARNING:

   TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR

MOISTURE.  DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR

HD1501