Input Level; Level Control; Input Jacks - YORKVILLE PSA1S Manuel De Service

1. Input Level

Choose between line-level and speaker-
level signals.
The Line-Level position is used when the
PSA1s/ PSA2s is fed a line-level signal from
a processor, an electronic crossover, an
un-powered mixer, or the loop-through of a
powered speaker cabinet. When using the
line-level mode, using balanced ¼-inch (Tip,
Ring, Sleeve) and/or XLR cables will reduce
the unit's sensitivity to hum and buzz.
The Speaker Level position should be used
when the PSA1s/ PSA2s is fed with a ¼-inch speaker cable from
the output of an amplifier, a powered-mixer, or from the parallel
connection on an un-powered speaker cabinet. For speaker level
operation, connect the PSA1s/ PSA2s just like an ordinary speak-
er (in parallel using the loop-through jacks) along with the passive
full-range loudspeakers.

2. Level Control

Adjusts the amount of bass added to the sound system. This
control should be set by listening with a medium-level input
signal (such that the limiter is not firing).
Note: It is not recommended to set
this control at high levels since the
limiter determines the output level.
A setting at the center detent on
the PSA1s/ PSA2s Level control is the
correct starting point when setting
up a sound system. The detent is the
setting that will give full power when
the line input is used and the input
signal is at a level of +3 dBV.

3. Input Jacks

Designed to make it easy to hook up
the PSA1s/ PSA2s to almost any audio
system with minimal hassle. ¼-inch and
XLR inputs with Thru connections are
supplied. The PSA1s/ PSA2s may be
plugged in before or after a full-range
loudspeaker, it does not alter the signal
http://www.yorkville.com/manuals/
PSA1 s PSA2 s
Input Mode
Clip
Limit
Pwr
Level
Min
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QuickStart-PSAS-00-1v3 • YS#QSTART-PSAS • September 28, 2020
to the daisy-chained (thru) loudspeakers and
will not draw any power from the host ampli-
fier/processor driving them. Also, note that
an external crossover is not necessary when
using the PSA1s/ PSA2s.
Note: the Thru jacks allow many PSA1s/
PSA2s subwoofers to be connected in
a chain (parallel). There is no practical
/
limit to the number of PSA1s/ PSA2s that
may be connected together.
4. Protection
The PSA1s/ PSA2s has several internal protection mechanisms
against over-current, over-excursion, clipping, and excessive average
power output. In some cases, when protection is activated, the output
will be cut off. In these cases, the power LED will blink, and the PSA1s/
PSA2s will attempt to restart itself. If the fault persists, you should take
your PSA1s/ PSA2s to the nearest authorized service center for repair
by a qualified service technician.
At high power levels when the limiter is operating,
increasing the subwoofer level control will not increase
the output. For the best results, set the system so that the
limiter LED occasionally (a few times per second) lights up.
The limiter is present in the circuit at all times to prevent
Line
Spkr
Max
distortion and to prevent over-
excursion of the speakers.
Note: The PSA1s/ PSA2s ' built-in
stand mounting adapter can be
used with the Yorkville SW-TUBEHD
accessory to support either one
or two of our PSA1 cabinets. The
support tube can be used safely as
long as the PSA1s/ PSA2s is on a
flat, level surface.
WARNING: Larger or heavier
cabinets should NOT be used!