Thump12 • Thump15 P
o
w
er
ed Loudspe
ak
ers
14
Thump12 • Thump15 Powered Loudspeakers
Appendix B: Connections
XLR and 1/4" Combo Input Connector
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 an
instrument level to a high-output mic signal. Simply
connect an XLR, TRS or TS connector into the channel
and adjust the level accordingly.
Balanced XLR Input Connector
If using balanced XLR input cables, be sure the
cables are wired per AES (Audio Engineering Society)
standards:
Balanced XLR Input Connector
Pin 1 – Shield (Ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
Balanced 1/4" TRS Input Connector
To connect a balanced line to this input, use a
1/4" Tip-Ring-Sleeve (TRS) plug. “TRS” stands for
Tip-Ring-Sleeve, the three connection points
available on a stereo 1/4" or balanced phone jack
or plug.
If using balanced 1/4" TRS input cables, be sure the
cables are wired per AES (Audio Engineering Society)
standards:
Balanced 1/4" TRS Connector
Sleeve – Shield (ground)
Tip – Positive (+ or hot)
Ring – Negative (– or cold)
Balanced XLR Input Connector
2
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
SLEEVE
TIP
SLEEVE
TIP
RING
RING
TIP
SLEEVE
RING
Balanced 1/4" TRS Connector
Unbalanced 1/4" TS Input Connector
To connect an unbalanced line to this input, use a
1/4" mono (TS) phone plug.
If using unbalanced 1/4" TS input cables, be sure the
cables are wired per AES (Audio Engineering Society)
standards:
Unbalanced 1/4" TS Connector
Sleeve – Shield (ground)
Tip – Positive (+ or hot)
Balanced XLR Output Connector
There is also one male balanced XLR output
connector on each Thump loudspeaker. Be sure the
cables are wired per AES (Audio Engineering Society)
standards:
Balanced XLR Output Connector
Pin 1 – Shield (Ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
Thump loudspeakers may be daisy-chained via the
male XLR connector labeled “THRU”. Simply plug the
signal source (i.e., mixer output) into the input jack(s),
and patch that loudspeaker’s thru jack to the next
loudspeaker’s input jack, and so on, daisy-chaining
multiple Thump loudspeakers. See page 7 for a visual
representation of daisy-chaining.
SLEEVE
TIP
TIP
SLEEVE
TIP
SLEEVE
Unbalanced 1/4" TS Connector
Balanced XLR Output Connector
2
1
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
