2
3. Input (Link) Jacks
The inputs are designed to make it easy to hook up your
PS12s, PS15s and PS18s to almost any audio system
with minimal hassle. An external crossover is not neces-
sary and connections can be made using the ¼-inch and/
or the XLR inputs and Thru connections.
The PS12s, PS15s and PS18s may be plugged in
before or after the full-range loudspeakers, they do not
alter the signal to the daisy-chained (thru) loudspeak-
ers and will not draw any power from the host amplifier/
processor driving them.
Note: As well as accommodating full-range
loudspeakers, the Thru jacks allow many PS12s,
PS15s and PS18s subwoofers to be connected in
a string (parallel). There is no practical limit to the
number of PS12s, PS15s and PS18s subwoofers
that may be connected together.
4. Protection
The PS12s, PS15s and PS18s are protected against
excess driver excursion and against voice coil overheat-
ing. Please ensure that the line/speaker switch is in the
correct position to prevent clipping of the input circuitry. The PS Series Powered Subwoofers have a DSP-
based circuit to prevent clipping, over power and over excursion. For the best results, set the system so that the
limiter LED occasionally lights up Red and is NOT Yellow all the time. Limiter LED lights Red when the excess
driver excursion is active, this keeps the dynamics of the music. When the limiter LED is Yellow the voice coil
overheating protection is active, this will compress the dynamics of the music. At high levels the limiter will limit
the gain of the PS Series Powered Subwoofer and hence if the user attempts to set the subwoofer level control
at a high level, the resulting setting will be overridden by the internal protection. The level control should be set
while operating at low levels (under 10 watts). This is accomplished by turning the master volume of the signal
going to the subwoofer down to allow the balancing and setting of the bass along with the full range speaker
top in use. If the level control is set too high due to setting it at high operating levels the input circuit will clip and
the dynamics of the bass will be lost. The Red Clip indicator will signify when this occurs. This can happen with-
out audible distortion since the filters and limiters will suppress the distortion.
Note: At high power levels, when the limiter is operating, increasing the Subwoofer’s Level Control will NOT
increase the output. Do NOT continue to increase this setting while operating at high levels.
5. Stand Mounting Adapter
The PS Series Powered Subwoofers come equipped with a built-in stand mounting adapter that can be used
with Yorkville SW Teletube accessory to support powered top cabinets.
WARNING: PS Series Powered Subwoofers MUST be on a flat, level surface to support the cabinet safely.
Do not use larger than the recommended top cabinets!
Input Mode
Line
Spkr
Pwr
Limit
Clip
Level
Min
Max
Input
(
LINK
)
Summary of Contents for PS12s
Page 12: ...9 Notes ...
