User manual KLIPSCH KSB-S1

[. . . ] CONNECTION AND ADJUSTMENT Make all connections with the power turned off on your subwoofer and main amplifier. Your subwoofer has three sets of input connections on its back panel:(1) a single LFE-Direct RCA jack that bypasses the internal crossover; (2) a pair of RCA jacks for line-level stereo (or mono) input; and (3) a set of terminals for connection to speaker outputs on a receiver or amplifier. In addition, there are four controls on the back panel:(1) Main Power; (2) Auto Power On/Off; (3) Phase; and (4) Lowpass Crossover Frequency . If your system is built around one of these, it will almost always be best to connect the subwoofer output on the receiver or processor to the subwoofer's LFE Direct input (See Figure 1). [. . . ] If your receiver or processor gives you a choice of crossover frequencies, 80Hz is usually a good starting point. In that case, start with the frequency that comes closest to matching the specified low-frequency limit of the smallest speakers in the system. After completing the other adjustments, you may want to experiment with moving the frequency up and down a little, to see if a different setting works slightly better. If the crossover frequency is set higher than 100Hz, the subwoofer should be in the front of the room near the front main speakers. Volume Control -- Adjust the subwoofer's Level to get a smooth transition between its output and that of the main speakers. Your receiver or processor will have a subwoofer level control in its speaker setup menu, so you will have to go back and forth a bit between it and the Level control on the subwoofer itself. In the end, you should wind up with the menu control somewhere in the middle of its range. Phase Control -- In some installations the setting of the Phase Control may not make much difference, whereas in others it may be necessary to go back and forth between the Phase and the Level controls for a while in order to get the very best blend with the main speakers. Since each control setting (including the one for crossover frequency in the receiver or processor) affects the optimum settings for the others, it often takes a while to get everything dialed in just right. Start with the phase knob at 0° and play a recording with a prominent, repeating bass line in your listening position. Repeat this process with the control in the 90° and 180° positions. If that does not entirely solve the problem, you probably need to raise the Crossover Frequency. General Comment About Adjustments: Since any change in the setting of one control tends to change the optimum settings for the others to some degree, the adjustment process is very interactive and involves a great deal of trial and error. If after a period of listening and calibration you're still not happy, it may mean that you need to experiment a little with the location of the subwoofer. CARE AND CLEANING The only thing you should ever need to do to your subwoofer is to dust it occasionally. Never apply any abrasive or solvent-based cleaner or any harsh detergent. You can clean the grille with the brush attachment of a vacuum cleaner. These outputs can be connected to your subwoofer's main line-level inputs (See Figure 2). You will need one or two shielded, high quality interconnect cables of appropriate length with RCA plugs on each end. If your system does not provide any of these outputs, you will need to connect the subwoofer's Speaker Level inputs to your receiver or integrated amplifier's speaker outputs (See Figure 3). Preamp Outputs on Receiver or Integrated Amplifier -- If your receiver or integrated amplifier has spare preamplifier outputs for its front left and right channels, connect these to the line-level input jacks on the subwoofer. ⷠPre-out/Main-in Loops on Receiver or Integrated Amplifier -- Some receivers and integrated amplifiers have their preamplifier and power amplifier stages connected externally via jumpers. [. . . ] However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. AND CANADA ONLY The Warranty below is valid only for sales to consumers in the United States or Canada. ("KLIPSCH") warrants this product to be free from defects in materials and workmanship (subject to the terms set forth below) for a period of five (5) years from the date of purchase. [. . . ]