JBL Prx615m Manual

SYSTEM SET UP - SUBWOOFER
Models: PRX618S-XLF
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Features
1  - XOVER IN / OUT:Pressing this button engages a high-pass filter that allows a smooth tra\
nsition between the subwoofer 
and a full-range speaker connected to the output connector. 
2  - POLARITY INVERT:Allows you to set the polarity of the subwoofer to either Normal (no ch\
ange) or Reverse (inverse 
polarity). The correct polarity setting will produce the best blend between the sub\
woofer and the full-range speaker and...

1  - POLARITY SWITCH
This switch changes the polarity of the subwoofer to either 0° (no change)
or 180° (inverse polarity).  The correct polarity setting will produce the best
blend between subwoofer and the full-range speaker and deliver the
strongest perceived bass response at the listening position.  This is
especially useful when the subwoofer is placed at a different distance 
from the listening position than the full-range speakers.  If the bass
response seems weak, try using this switch to invert...

PRX600 series systems have been designed to allow the connection of a va\
riety of sources. This provides a
great deal of versatility, especially with the PRX612M and PRX615M, as a microphone or instrument\
 can be
connected directly to the input. Low level outputs from consumer product\
s like MP3 and CD players can also 
be accommodated. 
There are two user selectable gain or input sensitivity ranges: Mic and \
Line. For the majority of applications, 
the system will be receiving a signal from a mixer,...

SETTING THE GAIN
Only a properly set up system will guarantee maximum performance with a \
minimum of distortion and feedback.
(This is as true for self powered systems as it is for passive systems)\
. An easy rule to follow is: “Everything
should clip at once.” 
Following these simple steps will ensure you are getting the optimum per\
formance out of your complete system. 
1. Once the source has been connected to the input of your mixer, adjust the input sensitivity (or trim) so that the highest input...

APPLICATION EXAMPLES
PRX615M
Basic Sound Reinforcement System 
This is a very basic sound system. PRX600 series speakers allow the dire\
ct connection of sound sources,
without the need for extra mixer or pre-amplifier. The XLR or 1/4 inch input jack provides versatility and cabling
options and the mic/line input sensitivity selector switch optimizes the\
 speaker gain for the input source.
Additional speakers may be connected (daisy chained together) in mono \
mode. 25
PRX600.UsersGuide.020411.qxd...

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22
PRX618S
Right Main Output
PRX612M
Music Playback Reinforcement with Subwoofer (PRX612M Pole Mounted on a PRX618S)
This is a very powerful but flexible combination. The subwoofer provides the extra low frequency extension and
also serves as the base for the pole mount. The compact 12 inch satellite system, PRX612M is a perfect match
to the subwoofer. 
From the master outputs of your mixer route the wires to the subwoofer f\
irst and select the x-over in (high-pass)
option. Route the cable from the...

Right Main Output
PRX635
PRX612M
Monitor Output
Live Performance Or Music Playback Reinforcement System With Stage Monitors 
(PRX635 and PRX612M or PRX615M) 
This is an ideal system when wide coverage and good directivity is requi\
red, specifically in highly reverberant
rooms. The horn loaded PRX635 3-way system will control the propagation of the \
sound much better than a
conventional 2-way system. The more directional or controlled the sound is the more independent the\
 system
becomes from the room...

PRX625PRX618S-XLF
PRX612M
Right Main Output
Monitor Output
Large Live Performance Or Music Playback Reinforcement System With Stage Monitor 
(4 x PRX618S-XLF, 4 x PRX625 and 2 x PRX612M) 
For larger crowds in and outdoors, a flexible system like this will deli\
ver excellent results. The dual 15 inch
PRX625 delivers mighty bottom end and crisp highs. The combination of extra PRX618S-XLF subwoofers gives
it an even more thunderous low end. The PRX625s can be arrayed as pair of two on each side for a...

REFERENCE
Balanced vs. Unbalanced Lines 
Your PRX600 series can accept either type of input. There are two basic types of audio system interconnections
for audio signals: Balanced and Unbalanced. 
Balanced Lines
In audio, a balanced line is a three-conductor system in which the two s\
ignal wires carry an equal, but opposite
voltage with respect to the ground wire. The ground wire acts only as a shield and does not carry any audio
signal current. Outside interference (such as RFI - Radio Frequency Int\...

CABLES AND CONNECTORS
XLR/F to XLR/M Microphone CableThe standard cable for interconnection of microphone and line level signal in professional audio systems.
• Microphone to mixer  
• Microphone to PRX600 direct input
• Professional audio mixer to PRX600 
• Daisy chaining PRX600 speakers
TRS (balanced) 1/4 inch phone jack 
to XLR/MFor connecting balanced devices with 1/4 inch phone and maybe 
used interchangeably.
TRS (unbalanced)  1/4 inchphone jack to XLR/MFor connections of instruments with...