Getting Started; Unpacking; Placement; Audio Connections - JBL LSR25P Owner's Manual

Section 2: Getting Started

2.1 Unpacking:

An easy way to safely unpack your monitors is to open the top of the box, keep
the filler piece on, and roll the box upside down. The box can then be slipped off. This also
works in reverse for repacking the units to take them to the next session.

2.2 Placement:

The design of the LSR systems lend themselves to a wide variety of placement
options. Covered here is a typical stereo setup for near to mid field monitoring. A deeper
discussion of multi-channel sound setup is available from JBL in Tech Note Volume 3,
Number 3.
Listening Distance: By evaluating a broad cross-section of studio environ-
ments, it was determined that the common listening position at recording consoles is gen-
erally 1 to 1.5 meters (3 to 5 feet) for near field applications. For mid-field applications, 2
to 3 meters is more likely. The real key to successful stereo placement is to form an equilat-
eral triangle between the monitors and the prime listening position. As shown below, the
distance between the monitors and the distance between each monitor and the center of
the listener's head are equivalent.
Vertical vs. Horizontal Placement: The LSR25P near field is designed to
be positioned vertically. This orientation eliminates the phase shifts that occur when the
relative distances between the woofer, tweeter and the listening position change.
Angling towards the listening position: LSR monitors should be angled
to directly face the listener. The center of the high frequency transducer should be on-axis
with the ear level of the listener.

2.3 Audio Connections:

LSR25P Audio Connections: The LSR25P comes with an XLR and RCA con-
nectors to accommodate a wide range of signal levels and balanced or unbalanced config-
urations. The XLR input is nominal +4 dBu sensitivity and the RCA input is -10 dBV.
Variable user calibration can also be accommodated using the front mounted volume con-
trol. Positive voltage applied to Pin 2 of the XLR or the pin of the RCA jack will produce a
forward motion in the low frequency cone.
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