User manual RUSSOUND ACP-1DU

[. . . ] The unit must be returned to Russound at the owner's expense and with prior written permission. Accidental damage and shipping damage are not considered defects under the terms of the warranty. Russound assumes no responsibility for defects resulting from abuse or servicing performed by an agency or person not specifically authorized in writing by Russound. [. . . ] STEP 4: As outlined in STEP 2, connect the Speaker wires to the connector labeled OUTPUT, observing channel and polarity identification. STEP 5: Insert the modular connectors into the appropriate sockets on the PC board. Make sure that the plugs marked INPUT (from amp) connect to the sockets marked INPUT (from amp) on the attenuator!Insert firmly until assembly is fully seated and the locking tabs are engaged. If necessary, pre-dress the wires for easier mounting. ACP-1DU Instruction Manual Wall Mount Stereo Volume Control with A / B Switch Product Overview The Russound ACP-1DU is a wall mount UltraMatchTM stereo volume control combined with an A / B source selector switch. This product allows you local selection and volume control of one of two amplifiers (sources) through a single pair of speakers, available in a Decora® style double-gang plate. The volume control is ideal for residential or commercial application. The A / B switch is equipped with screw terminal modular connectors for ease of installation. The interlocking feature assures that the connection is safe and permanent. Connectors are packaged and supplied separately. 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 UltraMatchTM The UltraMatchTM Volume Control you have just purchased conJumper nects between the speaker outputs of an amplifier or receiver and a Settings On Circuit Boards pair of speakers. The 1X setting allows the volume control to be used as a standard control. The 2X, 4X, and 8X settings allow it to be used as an UltraMatchTM control. The UltraMatchTM volume control provides a method of matching the minimum output impedance of the amplifier or receiver, in addition to adjusting X1 volume. It eliminates the need for a speaker selector or impedance matching equipment. The volume is adjusted by attenuating the amplifier signal output of the control to the speakers. All Russound Volume Controls are manufactured using a high-quality autoformer design which provides long life, excellent frequency response, no heat build-up, and maximum power transfer from the amplifier to the speakers. All Russound volume controls X2 conform to UL Standard 1492 First Edition, and for Canada Certified to CSA Standard 22. 2 No. This certification assures that your volume control has been designed and tested for safety. 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X 8X 4X X 1X-2X-8X 2X-4 1X 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 8X 4X X 1X-2X-8X 2X-4 1X X4 8X 4X X 1X-2X-8X 2X-4 1X Russound UltraMatchTM volume controls eliminate the need for a speaker selector. [. . . ] There are two impedance matching charts, one for 8 ohm amplifiers and one for 4 ohm amplifiers. Determine the impedance for each pair of speakers by referring to its manual. see fig 2) EZB CONNECTING BLOCKS The EZB-1 and EZB-2 connecting blocks are Russound accessories that simplify connections of multiple volume controls and speaker pairs. [. . . ]