Appendix B: Connections - Mackie SRM1850 Owner's Manual

Repair
For warranty service, refer to the warranty
information on page 19.
Non-warranty service is available at a factory-
authorized service center. To locate the nearest
service center, visit www.720trees.com, click "Contact
Tech Support" and select "Locate a Service Center
or Distributor" [3]. Service for SRM1850 subwoofers
living outside the United States can be obtained through
local dealers or distributors.
If you do not have access to our website, you may call
the Tech Support department at 1-800-898-3211,
Monday-Friday, during normal business hours, Pacific
Time, to explain the problem. Tech Support will tell you
where the nearest factory-authorized service center is
located in your area.

Appendix B: Connections

Balanced XLR Input Connector
Each SRM1850 subwoofer has two female
XLR inputs. 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 XLR Input Connector
2
SHIELD
HOT
3 1
COLD
SHIELD
1
3 COLD
2
HOT
Balanced XLR Output Connector
There are also four male balanced XLR output
connectors on each SRM1850 subwoofer [two high
pass and two full range]. 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)
Balanced XLR Output Connector
SRM1850 subwoofers may be daisy-chained via the
male XLR connector labeled "FULL RANGE". Simply
plug the signal source (i.e., mixer output) into the
input jack(s), and patch that subwoofer's full range
jack to the next subwoofer's input jack, and so on,
daisy-chaining multiple SRM1850 subwoofers. See
page 7 for a visual representation of daisy-chaining.
SHIELD 1
3
2
COLD
HOT
SHIELD
1
3 COLD
2
HOT
Owner's Manual
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