JBL LSR2328P Setting Up Your System, Unpacking, Placement, Channel System with, Surround Sound

Section 3: Setting Up Your System

Unpacking

When removing the systems from their packaging, it is important not to grasp the units from the front. Because the high frequency device is located near the top of the cabinet on the front baffle, a stray hand or finger can cause damage. The best way to safely unpack your monitors is to open the top of the box, keep the foam end-cap piece on, and roll the box upside down. The box can then be slipped off. This also works in reverse for repacking the units.

Placement

The LSR2328P and LSR2325P models are designed to be positioned vertically to allow the woofer and the tweeter to be in vertical alignment. This orientation eliminates phase shift that occurs when the distance of the woofer to the ear is different from the distance of the tweeter to the ear. Also, the tweeter waveguide is designed to provide optimum dispersion when the system is vertically oriented. Placing the system horizontally will defeat the LSR Linear Spatial Reference principles and cause destructive reflection off the work surface. The loudspeakers should be angled so the center of the high-frequency transducer in each speaker is aimed directly towards the ear of the listener. Ideally, the LSR2328P and LSR2325P speakers should be placed on suitable speaker stands, rather than on the work surface, and positioned away from walls and boundaries. The distance and position of the subwoofer can be adjusted to produce best bass response in the room. Low frequency performance in the room can benefit by placing the subwoofer close to a wall or in a corner that may be further away from the mix position than the other speakers. When properly placed, you should not be able to localize the bass produced by the subwoofer. That is, your ear should believe the bass is coming from the Left and Right speakers.

In two channel production applications, the common listening distance is generally 1 to 1.5 meters (3 to 5 feet) from the left and right speakers. The speakers should be placed so the position of the listener and the two speakers form an equilateral triangle. In 5.1 Surround Sound production, the listening distance for all speakers from any speaker is typically 5' to 8'. The placement of the Left and Right speakers should form an equilateral triangle with the mix position. The Center speaker should be placed half way between the left and right speakers at exactly the same distance from the mix position. The Left Surround and Right Surround speakers should be placed the same distance as the Left, Center and Right speakers, and positioned 110 degrees to 150 degrees relative to the center speaker. The distance and position of the subwoofer can be adjusted to produce best bass response in the room.

2 Channel System with	5.1 Surround Sound
Subwoofer	System

30º

30º

110º

30º 30º

11 0º

Mix Position

150º 150º

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