SRM350v3 and SRM450v3 P
o
w
er
ed Loudspe
ak
ers
10
SRM350v3 and SRM450v3 Powered Loudspeakers
SRM350v3/SRM450v3 Loudspeaker: Rear Panel Features continued...
Balanced 1/4" TRS Connector
Sleeve – Shield (ground)
Tip – Positive (+ or hot)
Ring – Negative (– or cold)
To connect unbalanced lines to these inputs, use a
1/4" mono (TS) phone plug, wired as follows according
to standards specified by the AES (Audio Engineering
Society):
Unbalanced 1/4" TS Connector
Sleeve – Shield (ground)
Tip – Positive (+ or hot)
For more information on these connectors, see
Appendix B on page 17.
4. Gain Knobs
The gain knobs adjust the input sensitivity of the
mic, line and/or RCA inputs. This allows signals from
the outside world to be adjusted to run through each
channel at optimal internal operating levels.
There is – dB of gain with the knob fully down
(off), ramping up to 50 dB of gain fully up (max).
The accompanying LED will illuminate green when
the channel’s input signal is present, indicating signal.
It will remain lit so long as there is signal above
–20 dBu present in that channel.
The accompanying LED will illuminate red when the
amplifier in the SRMv3 loudspeaker is near the clipping
point. It is okay if this LED blinks occasionally, because
this means that the transient peaks are just reaching
the maximum output of the amplifiers and you are
getting the most out of your loudspeaker.
If connecting mixer outputs to loudspeaker
inputs, set the gain knob to 10:00 [“Line”]
for optimal sound and performance.
SLEEVE
TIP
SLEEVE
TIP
RING
RING
TIP
SLEEVE
RING
Balanced 1/4" TRS Connector
SLEEVE
TIP
TIP
SLEEVE
TIP
SLEEVE
Unbalanced 1/4" TS Connector
5. RCA Inputs [Channel 2 Only]
The stereo unbalanced RCA inputs allow you to
play a CD player, iPod
®
, or other line-level source.
The RCA jacks accept an unbalanced signal using
standard hi-fi [RCA] hookup cables.
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
Unbalanced RCA Connector
Sleeve – Shield (ground)
Tip – Positive (+ or hot)
For more information on these connectors, see
Appendix B on page 17.
6. Thru Output
This is a male XLR-type connector that produces
exactly the same signal that is connected to the
main input jack or a mix of channels 1 and 2. Use it to
daisy-chain several SRM loudspeakers together off
the same signal source(s).
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
Balanced XLR Output Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
TIP
SLEEVE
TIP
SLEEVE
Unbalanced RCA Connector
2
1
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
Balanced XLR Output Connector
ON
OFF
POWER
SIG/OL
SIG/OL
CH 1
MIX
U
MAX
OFF
LINE
MIC
U
MAX
OFF
LINE
MIC
PA
DJ
MON
SOLO
1
ON
HOLD TO
CLEAR
2
3
4
LIMIT
ON
LED
OFF
R
L
GAIN
GAIN
SPEAKER
MODE
FEEDBACK
DESTROYER
MAIN
3
6
7
5
4
