User manual NILES HDL-4

[. . . ] Removable connectors accommodate up to 14 gauge wire or "pins", making the HDL-4 compatible with most "highdefinition" speaker cables. 100% tested, electronically and acoustically, for frequency response, distortion and power handling. Standard 17" width allows the HDL-4 to stack neatly with other standard size components. [. . . ] 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. Select a convenient mounting location for the HDL-4. Run all the necessary wiring to the HDL-4. 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. The amplifier/speaker connectors on the HDL-4 are removable. If you wish, you may remove the HDL-4's connectors to facilitate installation see (Figure 3). Strip 3/8" of insulation from the end of each wire. Tightly twist the end of each wire until there are no frayed ends. 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. [. . . ] 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. Be careful not to overdrive or "clip" your amplifier. [. . . ]