User manual NILES HDL-4

[. . . ] Standard 17" width allows the HDL-4 to stack neatly with other standard size components. Only an 1/8" standard screwdriver and wire stripper are required for installation. Proudly made in the USA. q q q q q q q q 3 H IGH D EFINITION S PEAKER S ELECTION S YSTEM Installation Considerations HDL-4 Power Handling The HDL-4 is designed for use with a receiver or amplifier having a maximum power output of 250 watts per channel at 8 ohms. [. . . ] Consult your Niles dealer, building contractor, or local building and inspection department if unsure about which type of wire is best for your application. "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 5 H IGH D EFINITION S PEAKER S ELECTION S YSTEM 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 through the speakers. If you must locate the HDL-4 wiring near electrical devices, route the speaker wires several feet away from the electrical wiring. Using the HDL-4 with Tube-Type Amplifiers Virtually all tube amplifiers must have a load connected at all times. If the amplifier to be connected to the HDL-4 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 HDL-4. See (Figure 1) on next page for hookup diagram. 6 H IGH D EFINITION S PEAKER S ELECTION S YSTEM Tube Amplifier Figure 1 Using a Tube Amplifier 150 150 Niles HDL-4 AMPLIFIER L+ ON OFF Niles Audio Corporation, Miami, Florida USA SPEAKER 4 R+ L+ LRR+ L+ SPEAKER 3 LRR+ L+ SPEAKER 2 LRR+ L+ SPEAKER 1 LRR+ L- R- CONSTANT PROTECTION 7 H IGH D EFINITION S PEAKER S ELECTION S YSTEM Recessed areas for custom room labels. Attractive low-profile design. Simple push-button operation. Connect up to four pairs of speakers. Protection switch safeguards your receiver or amplifier even with all 4 pairs of speakers playing. AMPLIFIER L+ ON OFF Niles Audio Corporation, Miami, Florida USA SPEAKER 4 R+ L+ LRR+ L+ SPEAKER 3 LRR+ L+ SPEAKER 2 LRR+ L+ SPEAKER 1 LRR+ L- R- CONSTANT PROTECTION Constant Impedance Protection Switch Two-piece removable connectors. 8 H IGH D EFINITION S PEAKER S ELECTION S YSTEM Installation 1. See (Figure 2). Receiver TUNER 94. 9 15 Figure 2 Wiring Diagram Niles HDL-4 AMPLIFIER L+ ON OFF Niles Audio Corporation, Miami, Florida USA SPEAKER 4 R+ L+ LRR+ L+ SPEAKER 3 LRR+ L+ SPEAKER 2 LRR+ L+ SPEAKER 1 LRR+ L- R- CONSTANT PROTECTION Speaker Pair 4 Speaker Pair 3 Speaker Pair 2 Speaker Pair 1 9 H IGH D EFINITION S PEAKER S ELECTION S YSTEM 3. If you wish, you may remove the HDL-4's connectors to facilitate installation see (Figure 3). Insert each wire into the appropriate hole on the spring-loaded connector terminals. Be certain that proper phasing is observed--connect the positive terminals on the HDL-4 to the positive terminals on the amplifier and speakers and the negative terminals on the HDL-4 to the negative terminals on the amplifier and speakers. Affix the appropriate label to the recessed area over each ON/OFF selector button. Figure 3 Removing the Connectors Figure 4 Installing the Connectors 10 H IGH D EFINITION S PEAKER S ELECTION S YSTEM Operation "TECH TIP" There are two ways to use the HDL-4. [. . . ] Set them to the ON position. 12 H IGH D EFINITION S PEAKER S ELECTION S YSTEM 4. Turn on the amplifier or receiver and select a source, such as the tuner or CD player. Slowly turn up the amplifier or receiver volume and set it to a comfortable (not maximum) listening level. [. . . ]