Setting Up Your System; What's Included; Unpacking; Placement - JBL LSR305 Owner's Manual

Section 3: Setting Up Your System
Each speaker includes the following items:
• One 3 Series Studio Monitor
• One Power Cord
• Four peel-off rubber pads

Unpacking

When removing a speaker from its packaging, we recommend the following procedure, which will prevent
damage of the high frequency transducer located near the top of the cabinet on the front of the speaker:
• Remove the outer shipping carton, if one exists.
• Place the inner carton on the floor with the top facing upwards.
• Open the top of the box.
• Without removing the internal packaging end-cap, gently rotate the carton so the open end rests on the
floor and the bottom of the carton is facing you.
• Gently lift the carton allowing the speaker and protective end-cap to slide out of the carton and remain
on the floor.
Save the cartons and use the above procedure in reverse when you want to repack the units for shipment.

Placement

3 Series speakers are designed to deliver exceptional imaging in any room, To get the most out of your speakers,
follow these recommendations
• Attach the four supplied pads to each speaker to protect the finish on the bottom of the speaker.
• Position each speaker in a vertical orientation with the tweeter on the top. Vertical orientation eliminates
phase shift and cancellation of frequency response that occurs when the distance of the woofer to the ear
is different from the distance of the tweeter to the ear.
• Angle the speakers so the high-frequency transducer in each speaker is aimed directly towards the ear of
the listener.
• Ideally, the LSR308 and LSR305 speakers should be placed on suitable speaker stands, rather than on the
work surface. This will reduce resonance and deterioration of low frequency performance that occurs
through the speaker's mechanical coupling with the work surface.
• For optimum imaging, the left speaker and the right speaker should be placed symmetrically in the room, so
each speaker is the same distance from adjacent walls and reflective surfaces.
• The speakers should be placed so the position of the listener and the two speakers form an equilateral
triangle. Adjusting the distance between the speakers will affect the quality of bass heard at the listening
position. You can experiment with speaker placement to find the placement that produces the preferred
bass response, imaging and when listening to stereo material, produces a strong "phantom" center in which
vocals and some instruments seem to originate from a point between speakers.
• The listening distance can be determined according to your preference, the acoustics of your room and the
maximum SPL (Sound Pressure Level) you want to hear at the listening position. You can find the speaker's
maximum SPL at 1 Meter in the Specifications Section at the end of this manual. Each doubling of listening
distance will reduce the SPL at the listening position by 6 dB in an acoustically absorptive room, but only
3 or 4 dB in an acoustically reflective room.
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