Thump12 / Thump15: Rear Panel Features; Power Connection; Power Switch; Power Led - Mackie Thump 12 Owner's Manual

Thump12 / Thump15 Loudspeakers: Rear Panel Features
7 8 9
5

1. Power Connection

This is a standard 3-prong IEC power connector.
Connect the detachable power cord (included in
the packaging with the loudspeaker) to the power
receptacle, and plug the other end of the power
cord into an AC outlet.
Make sure that the AC power is matched to
the AC power indicated on the rear panel
(below the IEC receptacle).
Disconnecting the plug's ground pin is
dangerous. Don't do it!

2. Power Switch

Press the top of this rocker switch inwards to turn on
the loudspeaker. Press the bottom of this rocker switch
inwards to turn off the loudspeaker.
As a general guide, the mixer (or other
signal source) should be turned on first,
subwoofers next, and loudspeakers last.
As such, the loudspeakers should also be turned
off first, followed by the subwoofers, then the mixer.
This will reduce the possibility of any turn-on or
turn-off thumps and other noises generated by any
upstream equipment from coming out of the speakers.
10 6
3
4
11
2
1

3. Power LED

When the power switch is turned on – and the power
cord is connected to an active AC mains supply – this
LED illuminates green to indicate that the loudspeaker
is indeed really on. The cool green LED on the front of
the loudspeaker works the same way.

4. XLR and 1/4" Combo Inputs

The input on Thump loudspeakers is a combo jack
that may accept balanced/unbalanced XLR and 1/4"
connections. The input may handle anything from a
microphone to a line-level signal such as from a mixer.
Simply connect an XLR, TRS or TS connector into the
channel and adjust the level accordingly.
NEVER connect the output of an amplifier
directly to the input of the loudspeaker.
This could damage the input circuitry
of the active loudspeaker.
XLR connectors are wired as follows, according to
standards specified by the AES (Audio Engineering
Society):
Balanced XLR Input Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
Balanced XLR Input Connector
2
SHIELD
HOT
3 1
COLD
SHIELD
1
3 COLD
2
HOT
Owner's Manual
9