SRM1850 • SRM2850 P
o
w
er
ed Sub
w
oof
ers
14
SRM1850 • SRM2850 Powered Subwoofers
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 SRM 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 SRM 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
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
Balanced XLR Output Connector
There are also four male balanced XLR output
connectors on each SRM 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)
SRM 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 SRM subwoofers. See
page 7 for a visual representation of daisy-chaining.
Balanced XLR Output Connector
2
1
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
