Hookup Diagram; Connections; Placement - Mackie SR1521z User Manual

HOOKUP DIAGRAM

To Next
Speaker
MAIN INPUT
0dB
SR1521
Z
ACTIVE SOUND REINFORCEMENT
SPEAKER SYSTEM
LOOP OUT
-15 +5
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA
COPYRIGHT ©2004 • THE FOLLOWING ARE TRADEMARKS OR
REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC.:
"MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING
DAISY-CHAINING MULTIPLE SR1521z'

CONNECTIONS

The SR151z has one female XLR input that accepts
a balanced line-level signal. When connecting a balanced
signal, be sure it's wired per AES (Audio Engineering
Society) standards:
Hot (+) Pin 
Cold (–)
Shield (Ground) Pin 1
Balanced XLR Connectors
There is also a male XLR connector labeled LOOP
OUT. This is also wired according to the above AES
standard.
The LOOP OUT connector allows you to connect
more than one SR151z to your system. Simply plug the
signal source (i.e., mixer output) into the first MAIN
INPUT jack, and patch that speaker's LOOP OUT jack
to the next MAIN INPUT jack, and so on, daisy-chaining
multiple speakers.
MAIN INPUT
POWER
0dB
SR1521
SIGNAL Z
ACTIVE SOUND REINFORCEMENT
SPEAKER SYSTEM
LOOP OUT
LIMIT
-15 +5
THERMAL DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA
COPYRIGHT ©2004 • THE FOLLOWING ARE TRADEMARKS OR
REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC.:
"MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING
s
XLR
Pin 
POWER
SIGNAL
LIMIT
THERMAL
Left Right
Line level Line level
Output Output
1202-VLZPRO
Mixer or
Preamplifier
The LOOP OUT jack is wired straight from the MAIN
INPUT connector — there is no electronic circuitry
between — so the signal coming out of the LOOP OUT
jack is exactly the same as the signal going in.

PLACEMENT

The SR151z speaker is designed to sit on the floor or
stage. It can be pole-mounted via the built-in socket on
the bottom of the cabinet. Be sure the pole is capable of
supporting the weight of the SR151z.
You can create a horizontal array by placing the cabi-
nets side-by-side. However, you should have a good un-
derstanding of the relationship between the splay angle
(the angle between the facing sides of the cabinets),
the on-axis power, and frequency cancellation effects
between cabinets.
When two cabinets are placed side-by-side, the actual
splay angle is 0º (determined by a 10º angle on each
cabinet side). As the splay angle increases toward the
angle of horizontal coverage (90º for the SR151z), the
on-axis power decreases, but the frequency response be-
comes smoother as the comb-filtering effects (caused by
the interaction in the area of double-coverage) decrease.
MAIN INPUT
POWER
0dB
SR1521
Z SIGNAL
ACTIVE SOUND REINFORCEMENT
SPEAKER SYSTEM
LOOP OUT
LIMIT
-15 +5
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA THERMAL
COPYRIGHT ©2004 • THE FOLLOWING ARE TRADEMARKS OR
REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC.:
"MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING
WARNING: The cabinet has no rig-
ging points and is not suitable for
rigging. NEVER attempt to suspend
the SR151z by its handles.
As with any powered components,
protect them from moisture. If you
are setting them up outdoors, make
sure they are under cover if you
expect rain.
To Next
Speaker
MAIN INPUT
POWER
0dB
SR1521
Z SIGNAL
ACTIVE SOUND REINFORCEMENT
SPEAKER SYSTEM
LOOP OUT
LIMIT
-15 +5
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA THERMAL
COPYRIGHT ©2004 • THE FOLLOWING ARE TRADEMARKS OR
REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC.:
"MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING
5