User manual NILES SVL-6

[. . . ] Steps 11-6 attenuate -3 dB per step; steps 5-2 are 6 dB per step. Step 12 is "full-on" and step 1 is "full-off". Greater dynamic range--you get 42 dB of total attenuation instead of the usual 20 or 30 dB. Pre-printed Room Labels are included for easy identification of speaker ON/OFF buttons. [. . . ] For wiring runs longer than 80 feet, 14 gauge wire is recommended. Using speaker wire larger than 14 gauge for the SVL-6 connections is not recommended --the wire may 5 S PEAKER S ELECTION /V OLUME C ONTROL S YSTEM not fit into the connectors. Never use solid-core, aluminum, or "Romex" type wire with the SVL-6. When running speaker wires inside walls, most states and municipalities in the U. S. specify that you must use a special type of speaker wire. Usually, the requirement is that the wire that has a specific "CL" fire rating, such as "CL-2" or "CL-3". Consult your Niles dealer, building contractor, or local building and inspection department if unsure about which type of wire is best for your application. Avoiding Interference Speaker wires can act as an antenna for electrical noise. Locating speaker wires too close to a light dimmer or switch may cause a "buzzing" or "popping" sound to be heard though the speakers. If you must locate the SVL-6 wiring near electrical devices, route the speaker wires several feet away from the electrical wiring. Using the SVL-6 with Tube-Type Amplifiers Virtually all tube amplifiers must have a load connected at all times. If the amplifier to be connected to the SVL-6 is a tube amplifier, be sure to always have at least one pair of speakers switched on at all times. An alternative is to permanently connect a 150 ohm, 5 watt resistor across the tube amplifier's output in parallel with the SVL-6. See (Figure 1) on next page for hookup diagram. "TECH TIP" Wire size is expressed by it's AWG (American Wire Gauge) number. The lower the AWG number, the larger the wire, i. e. , 12 AWG wire is physically larger than 14 AWG. 6 S PEAKER S ELECTION /V OLUME C ONTROL S YSTEM Tube Amplifier Figure 1 Using a Tube Amplifier 150 150 Niles SVL-6 AMPLIFIER L+ ON OFF CONSTANT PROTECTION LRR+ L+ SPEAKER 6 LRR+ L+ SPEAKER 5 LRR+ L+ SPEAKER 4 LRR+ L+ SPEAKER 3 LRR+ L+ SPEAKER 2 LRR+ L+ SPEAKER 1 LRR+ NILES Niles Audio Corporation, Inc. Miami, Florida USA 7 S PEAKER S ELECTION /V OLUME C ONTROL S YSTEM 12 position volume control provides greater attenuation than conventional 10 position designs. Recessed areas for custom room labels. SVL-6 SPEAKER SELECTION/VOLUME CONTROL SYSTEM Attractive low-profile design. PROTECTION 1 2 3 4 5 6 NILES Simple push-button operation. Connect up to six pairs of speakers. Protection switch safeguards your receiver or amplifier even with all 6 pairs of speakers playing. AMPLIFIER L+ ON OFF CONSTANT PROTECTION LRR+ L+ SPEAKER 6 LRR+ L+ SPEAKER 5 LRR+ L+ SPEAKER 4 LRR+ L+ SPEAKER 3 LRR+ L+ SPEAKER 2 LRR+ L+ SPEAKER 1 LRR+ NILES Niles Audio Corporation, Inc. Miami, Florida USA Constant Impedance Protection Switch Two-piece removable connectors. 8 S PEAKER S ELECTION /V OLUME C ONTROL S YSTEM Installation 1. Select a convenient location for the SVL-6. Run all the necessary wiring to the SVL-6. See (Figure 2). Receiver Figure 2 Wiring Diagram Niles SVL-6 Speaker Pair 6 9 Speaker Pair 5 Speaker Pair 4 Speaker Pair 3 Speaker Pair 2 Speaker Pair 1 S PEAKER S ELECTION /V OLUME C ONTROL S YSTEM 3. The amplifier/speaker connectors on the SVL-6 are removable. If you wish, you may remove the SVL-6's connectors to facilitate installation [see (Figure 3)]. Strip 3/8" of insulation from the end of each wire. [. . . ] The volume level of the speakers may vary from room to room. Two lesser factors are the size of the speaker and its efficiency. The largest factor is the physical size of the room. The SVL-6's volume controls allow you to adjust the volume of each speaker pair individually. [. . . ]