User manual RUSSOUND ALTX SC

[. . . ] You must use a minimum of a standard light switch plaster ring (p-ring) or a standard 20 cu. Suitable P-Rings and electrical boxes are available from your Russound dealer or a local electrical supply company. Using the PRing during new construction (some building codes require that wall devices be enclosed in electrical boxes. Check your local building code) is best because it gives you unobstructed access to the full depth of the wall. Jumper Settings On Circuit Boards 8X 4X X 1X-2X-8X 2X-4 1X X1 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X X2 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X X4 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X X8 8X 4X X 1X-2X-8X 2X-4 1X TYPE OF SPEAKER WIRE For most applications, we recommend you use 16 or 18 gauge, stranded copper speaker wire for the ALTx sc speaker connections. [. . . ] ULTRAMATCHTM VOLUME CONTROLS Russound UltraMatchTM volume controls eliminate the need for a speaker selector. By determining the drive capability of the amplifier with a few simple calculations, we 8X 4X 1X-2 2X-4X 1X X-8X Fig 1 8X 4X 1X-2 2X-4X 1X X-8X can determine the number of speakers the system can safely operate. DETERMINING THE PROPER JUMPER SETTING FOR IMPEDANCE MATCHING The jumper must be set in a position that correctly multiplies the impedance of the system to a level that is equal to or greater than the impedance of the amplifier. The jumper setting can be determined using the following simple steps 1. Determine the amplifier's minimum impedance. The amplifier's minimum impedance is usually found following Wattage and Frequency Response in the amplifier's specification page of the manual. It may also be listed on the back panel of the amplifier near the speaker terminals. Identify the correct impedance-matching chart according to the amplifier's minimum impedance. There are two impedance matching charts, one for 8 ohm amplifiers and one for 4 ohm amplifiers. Choose the chart that describes your amplifier. If your amplifier is 6 ohm stable, use the 8 ohm chart. 4 3. Determine the impedance for each pair of speakers by referring to its manual. Determine the total number of 4 ohm pairs of speakers. (rows on charts) Fig 2 Impedance Matching Charts For UltraMatchTM Impedance Matching For 4 Ohm Amplifiers 8 Ohm Pairs 0 1 2 3 4 5 6 7 8 0 1X 2X 4X 4X 8X 8X 8X 8X 1 1X 2X 4X 4X 8X 8X 8X 8X 2 1X 2X 4X 4X 8X 8X 8X 8X 3 2X 4X 4X 8X 8X 8X 8X 4 2X 4X 4X 8X 8X 8X 8X 5 4X 4X 8X 8X 8X 8X 6 4X 4X 8X 8X 8X 8X 7 4X 8X 8X 8X 8X 8 4X 8X 8X 8X 8X 9 8X 8X 8X 8X 10 8X 8X 8X 8X 11 8X 8X 8X 12 13 14 15 16 8X 8X 8X 8X 8X 8X 8X 8X 8X 4 Ohm Pairs Impedance Matching For 8 Ohm Amplifiers 8 Ohm Pairs 0 1 2 3 4 0 2X 4X 8X 8X Example: The table to the right shows an 8 ohm minimum impedance amplifier with 1 pair of 4 ohm speakers and 3 pair of 8 ohm speakers. The chart indicates the jumper setting should be set at 8X 5. Determine the total number of 8 ohm pairs of speakers. Follow the appropriate row and column to determine jumper settings. Make sure that your amplifier has adequate wattage for the number of speakers. Watts per channel divided by the number of pairs should equal or exceed the individual speaker's minimum wattage requirements. You must use an UltraMatchTM volume control for each pair of speakers. Every jumper setting must be set on the same setting throughout the system. A minimum speaker load of 4 ohms can be connected to the output of each UltraMatchTM volume control. [. . . ] The unit must be packed in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit. Russound reserves the right to request proof of purchase. Except to the extent prohibited by applicable law, no other warranties, whether expressed or implied, other than the express warranties stated herein, shall apply to units sold to the purchaser. Russound shall not be liable for any implied warranty of merchantability or fitness for a particular purpose to any person other than the original purchaser and user. [. . . ]