Harman Kardon SIG1.5 Owners Manual - Page 9

Installation and Connections Signature 1.5 Note: When making any connections between source components, processors or preamplifiers and the 1.5, or when making any connections to speakers, be certain that both the input device and the 1.5 are turned off. To ensure that there will be no unwanted signal transients that can damage equipment or speakers, it is always best to unplug all equipment from AC power outlets before making any connections. Modern electronic products often have a "standby" mode that may be activated even though the product may appear to be turned off. Power Control Connections The Signature Series 1.5 amplifier features a built-in remote turn-on system that will automatically turn on the amplifier when another device in the system is switched on. To activate this system, this amplifier must be used in conjunction with compatible Signature Series or Harman Kardon products or other approved devices. Note: Before making any connections to remote trigger outlets, it is critical that both the 1.5 and the triggering device be turned off. For additional safety, it is best that these connections be made while both products are unplugged from AC power sources. Remote Turn-On with the Signature Series 2.0 and Compatible Harman Kardon Products Connect one end of the accessory cable supplied with the 2.0 to the Power Amp Trigger In jack § on the rear of the 1.5. Connect the other end to the TRIGGER OUTPUT jack on the 2.0. Remote Turn-On Using an External AC-to-DC Converter If the 1.5 is not used with a compatible Harman Kardon product, it is still possible to activate the unit for automatic turn-on. To control the amplifier in this manner you will need a small UL/CSA-approved class-2 AC-to-DC power converter capable of delivering a 6- to 12-volt DC signal. The DC voltage should terminate in a standard 3.5 mm mono miniplug, with the tip of the plug "positive" (+). This type of converter may be obtained as a "Power Adapter" from many electronics retailers. Consult your dealer for further information. Plug the AC adapter into a switched outlet that will be activated when you wish to have the amplifier turn on. This may be the switched outlet at the rear of an AV receiver or other audio equipment, an AC outlet that is part of a current sensing control unit activated by a preamp or surround processor or a switched AC wall outlet. Connect the 3.5 mm miniplug from the power converter to the Power Amp Trigger In jack § on the rear of the 1.5. Audio System Connections As a general rule, avoid running any input signal or speaker wire connections next to or parallel with AC power cords. This may cause undesired hum or other interference that will greatly degrade signal performance. When making input connections with RCA-type plugs on interconnect cables, make certain to gently but firmly insert the plugs into the jacks on the rear of the 1.5. Loose connections can cause intermittent sound and may damage your speakers. Input Connections Stereo Mode: For conventional two-channel stereo operation, connect the right channel output of your preamp or processor to the Channel One Input ™ and the left channel output to the Channel Two/Bridged Input ∞. Make certain that the Bridge/Normal Switch £ is in the NORMAL position (see page 8). Bridged Mono Mode: To use the 1.5 as a singlechannel, mono amplifier, connect the line-level output of your preamp, processor or other signal source to the Channel Two/Bridged Input connector ∞ on the rear panel. No connection is required to the Channel One connector in this mode. Make certain that the Bridge/Normal Switch £ is in the BRIDGE position (see page 9). Output Connections The final step of the installation process is to connect the amplifier to your speakers using high-quality cable. A pair of binding posts is provided for each channel output. These posts will accept bare wire or banana-type plugs. To ensure that the high-quality signals produced by the 1.5 are carried to your speakers without loss of clarity or resolution, we recommend that you use high-quality 6