Thru Output; Ch 1/Mix Switch [Thru Output]; Speaker Mode; Feedback Destroyer - Mackie SRM550 Owner's Manual

SRM Loudspeaker: Rear Panel Features continued...

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)
Balanced XLR Output Connector
See page 8 to learn more about daisy-chaining SRM
loudspeakers.
For more information on these connectors, see
Appendix B on page 20.

7. Ch 1/Mix Switch [Thru Output]

This switch allows you to choose whether only
the channel 1 signal (pre-gain) is sent out to the
next loudspeaker [switch out – Ch 1] or if a mix
of the channel 1 and 2 signals are sent out to the
next loudspeaker [switch in – Mix] (post-gains).

8. Speaker Mode

Here you are able to change the loudspeaker's
speaker mode to tailor it to best suit your particular
application. There are four modes available: PA, DJ,
Monitor and Soloist with each SRM550 and SRM650
and PA, DJ, Fill and Speech with each SRM750.
Press the speaker mode button repeatedly until the
LED of the speaker mode you desire is illuminated.
Refer to the Frequency Response graphs on pages
23–25 for further information.
PA Speaker Mode – This mode is full range, but
focuses on mid-range clarity where vocals often reside.
This is the place to start for most sound reinforcement
applications.
DJ Speaker Mode – This mode bumps the lows and
highs with a mild tuck to the mids, perfect for music
playback.
1
SHIELD
3
COLD 2
HOT
SHIELD
1
3 COLD
2
HOT
MON(itor) Speaker Mode – This mode features a
low frequency roll-off and a reduction around 2 kHz to
ensure maximum gain before feedback in monitor
applications.
SOLO(ist) Speaker Mode – This mode features
a low frequency roll-off to get rid of unwanted thumps
and adds boost and sparkle to mid-range and high
frequencies. This plug-and-play mode is perfect for
singer-songwriters.
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FILL Speaker Mode – This mode features a mild
low frequency roll-off to ensure minimal on stage low
frequency build-up while providing a rich full range
response with plenty of mid-high cut through. This
plug-and-play mode is perfect for on stage monitor side
fill applications, as well as when facing audience areas
where a main FOH rig with subwoofers is present.
SPEECH Speaker Mode – This mode features a
significant low frequency roll-off to get rid of unwanted
thumps. It also adds boost and sparkle to mid-range and
high frequencies, critical for speech applications. This
plug-and-play mode is perfect for larger venue applica-
tions where speech is the primary audio source in need
of clear and precise intelligibility.

9. Feedback desTROYer:

The multi-band feedback destroyer hunts down
offending feedback frequencies and applies up to four
notch filters automatically to destroy feedback and
maximize gain prior to feedback. This is a great tool
for performers without a dedicated engineer.
The integrated and amazingly accurate Feedback
Destroyer instantly employs up to four incredibly
narrow 1/16th octave filters to locate and eradicate
feedback so you know you can perform fearlessly.
Plus, the entire system is protected by our Smart
Protect ™ DSP which kicks in to protect your
investment when things get pushed a little too hard.
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Owner's Manual
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