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1. Power Switch and Indicator
The green power LED illuminates when
the power switch is turned to the On posi-
tion and AC voltage is supplied. When the
power is removed or the power switched
is moved to the off position the green power indicator will blink while
the power supply is discharging. The processing circuitry will not reboot
unless the power supply is fully discharged before being turned back on.
It is not necessary to reboot however. Turning the power back on before
the power supply is discharged will simply resume normal operation.
2. PowerCON TRUE AC Loop Thru
As a standard, the AC inlet on the SA218S accepts locking PowerCON
TRUE power cords. There is also an AC outlet that can be used to loop
power through to other cabinets in your array using a male to female
PowerCON TRUE looping power cord. Check with your local Yorkville
dealer for availability of these accessory cords.
IMPORTANT: DO NOT EXCEED THE CURRENT
RATING OF THE POWER and ACCESSORY CORDS.
PLEASE READ THE SECTION OF THIS MANUAL
CALLED "CASCADE INSTALLATION."
3. Input Jack
This female-XLR accepts line level XLR microphone cables. For best
noise reduction use balanced sources.
4. Dual Link Outputs
These XLR male connectors can be used with a standard XLR cable to
daisy-chain up to 20 SA218S cabinets without signal degradation. Sim-
ply loop from one cabinet's Link jack to the next cabinets Input jack. In
many cases this limit of 20 cabinets can be exceeded, consult Yorkville
Sound for more details.
5. SA218S Level Control
This control adjusts the volume level of the SA218S relative to the input
signal level. Mixers and other audio sources connected to the SA218S
tend to have different output voltages, which mean the level control on
the SA218S is used to fine tune the cabinet's volume relative to the
mixer settings. It is perfectly acceptable to set the SA218S Level above
or below the center 0 dB setting.
http://www.yorkville.com/manuals/
To get the full Owner's Manual please visit our website at
or, if you need a printed version call 905-837-8777
Canada Voice: 905-837-8481
Canada Voice: 905-837-8481
Yorkville Sound
Yorkville Sound
550 Granite Court
550 Granite Court
Pickering, Ontario
Pickering, Ontario
L1W-3Y8 CANADA
L1W-3Y8 CANADA
Printed In CANADA
QuickStart-SA218S-00-1v0 • YS#QSTART-SA218S • May 30, 2023
LEDs indicates that a level has been reached where the SA218S limiters
are reducing the signal internally to prevent damage or distortion. It also
indicates that further increases in input level or increasing the SA218S
Level control position will not appreciably increase acoustic output.
The red Clip LED indicates that the input level is excessive and further
increases in level will cause severe distortion The input signal should be
reduced at the source until Clip activity ceases. The clip indicator comes
on at 12 Vrms,16 volts peak. The input clips at 17 Vrms, 24 volts peak.
The activity Indicator comes on at 5 mVrms or -45 dBV.
7. Line Current Limit Control
The Line Current Limit control allows the power to be reduced to allow
operation on limited power availability. Full power transients will be
allowed through but if the average power is excessive then the power
will be limited. This control works by advancing the limiter that limits
the voice coil temperature and by monitoring the current draw. In the
10 amp position (5 amp CE) the average power is limited only by the
voice coil temperature. In the 8 amp position (4 amp CE) with most
music, the limiter will be only active occasionally depending on the music
content. In the 7 amp position (3.5 amp CE) certain types of music will
not be limited, primarily music without deep bass or where the bass is
vunprocessed. The 5 amp position (2.5 amp CE) will significantly reduce
the output when the music content has continuous bass content below
45 Hz. The green power on indicator will dim to indicate when the line
current limiter is active. A small amount of dimming indicates thavt the
advanced thermal limiter is active while significant dimming indicates
that the line current monitoring system has detected excessive line
current. Low line voltage typically due to long power supply cables may
cause excessive line current, the line current monitoring system will
prevent this from tripping the power source circuit breakers.
U.S.A. Voice: 716-297-2920
U.S.A. Voice: 716-297-2920
Fax: 905-839-5776
Fax: 905-839-5776
w w w . y o r k v i l l e . c o m
w w w . y o r k v i l l e . c o m
Yorkville Sound Inc.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
4625 Witmer Industrial Estate
Niagara Falls, New York
Niagara Falls, New York
14305 USA
14305 USA
6. Clip, X-Max, VC-Therm,
Activity Indicators
The Clip and Limit LED indicators illuminate
to guide the user to proper operating levels.
Illumination either of the yellow Limit
Fax: 716-297-3689
Fax: 716-297-3689
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