Subwoofer Setup, Channel Surround Sound Setup

Subwoofer Setup

Begin by determining the best location for your subwoofer. If possible, the optimum set-up would look like the set-up in Figure 3; however, this setup may not be practical or possible in your room. Once you have set up your monitors, listen to some program material that you know contains low frequency information. Different locations may create a phase misalignment. Most subwoofers have a phase switch on them. Flip the phase switch. The bass response volume will either increase or decrease in volume. Whichever setting provides the loudest response at your seating position is in phase. After you have the proper phase setting, you will need to adjust the output level of the subwoofer to a level that provides a smooth blend of the bass volume with that of your monitors.

Figure 3

5.1 Channel Surround Sound Setup

Begin by placing the Left and Right front channels 30 degrees from the Center channel and equidistant to the listening position (Figure 4). The Left Surround (rear) and Right Surround (rear) channels should be placed 110 degrees from the Center channel. Their location should also be equidistant from the listening position. The subwoofer (Low Frequency Effects) channel is most effective when situated directly below the Center channel (as shown in Figure 4). If this is not possible, place the subwoofer just to the right or left side and below the Center channel. Ensure that the woofers are above the height of the console.

Once the monitors have been placed, you’ll need to adjust the System Level Adjust pots for each monitor so that all channels have exactly the same SPL output at the listening position. Although this can be done simply by listening to each channel one at a time and adjusting for relative levels, we recommend using an SPL meter and filtered noise (pink noise) to test each channel independently. Simply take a reading from each monitor, and then adjust all the monitors to match your lowest SPL reading. Your system levels should now be balanced for multi-channel surround.

The most significant point to remember is that each room presents its own set of acoustic variables. You'll want to experiment to arrive at the best possible sound for your room.