Aux Cd Tuner Tape

On-Screen Display ON

I- Treble Adjust

Full Mute

Deactivate Zone 2 Control ' and restore normal operation

Remote Trigger ON ■ +5dB Volume Step Remote Trigger OFF

Press and hold ACCY while pressing DONE to activate a "You Are Here" mode which:

Disables mute Sets volume to -30dB Centers Balance controls Loads the Pro Logic Effect Selects the VCR1 input

Activates On-Screen display with 2

second timeout

Sets Remote Trigger ON

Sets all tone controls to OdB or OFF

^ Location The dC_-| ¡s a highly specialized signal processing computer and requires Considerations special care during installation to ensure optimum performance.

The DC-1 may be installed on a shelf or in a standard 19" equipment rack, using rack-mounting hardware available from Lexicon. Observe the following precautions:

• Select a dry, well-ventilated location out of direct sunlight.

• Do not stack the DC-1 directly above heat-producing equipment such as power amplifiers.

• Avoid placing the DC-1 near unshielded TV or FM antennas, cable TV decoders, or other receivers. The DC-1 may interfere with some FM tuners if it is placed immediately above or below them. Some products, particularly power amplifiers, may cause hum in the DC-1 if they are in close proximity.

• Make sure the DC-1 front panel IR receiver window is unobstructed. The remote control must be in line-of-sight to this receiver for proper operation, if line-of-sight is impractical, an infrared remote repeater can be used with the rear panel IR connector. The DC-1 may be placed in a glass-doored cabinet but smoked glass will make the front panel Liquid Crystal Display (LCD) difficult to read and will reduce the sensitivity of the IR receiver.

AC Connections The DC-1 is designed to be connected to an uninterrupted AC power line in the same manner as a VCR or aTV. Like all computers, the DC-1 is sensitive to voltage fluctuations. We therefore recommend the use of an AC line filter to protect against line surges, or the installation of a line conditioner to protect against under voltage (brownouts) as well as overvoltage conditions.

The DC-1 has a master power switch on the rear panel above the IEC standard AC power receptacle. This switch may be left ON continuously when the unit is in regular use. When the DC-1 will not be used for an extended period of time, or whenever you are connecting or disconnecting any cables to the unit, this switch should be turned OFF.

Connect the power cable to the DC-1, then plug the power cord into a wall outlet or into an unswitched outlet on a surge protector. Be sure that the power cord is firmly seated in the connector on the rear panel of the DC-1.

Wiring Considerations

There is controversy over the audible effects of different types of interconnects. Audio/Video Cables

Good engineering practices have minimized the effect that cables might have on the inputs and outputs of the DC-1 — but feel free to evaluate different interconnects in your system. If you want to do some tweaking, be conscious of the mechanical stress from repeated insertion and overly tight connectors, and the possibly corrosive nature of some contact-enhancing fluids.

Note that the use of standard audio cables for video or digital audio applications may cause signal degradation, and is not recommended. For these connections, please use only cables that are designed for the application — these have different impedance characteristics than cables approved for analog audio applications.

Both audio and video cables should be kept as short as possible..

In general, speaker cables should be kept short, and low-impedance wire should Speaker Connections be used throughout to assure efficient power transmission and avoid audible distortion. Recommended wire lengths are given in the table below. Although these examples can be used as a general guide, your system manuals should provide detailed information specific to your components.

Wire Lengths


AWG Size

up to 12 feet

16 gauge

up to 18 feet

14 gauge

up to 29 feet

12 gauge

up to 51 feet

10 gauge

Before making any connections, turn off ALL audio and video components, Audio/Video including individual power amplifiers. (Unplug any preamps and power amps that Connections don't have power switches.)

The DC-1 is designed to function as the control center of the system, selecting inputs and controlling the volume of all speakers in the system. There are several ways to integrate the DC-1 into the system, but they basically fall into two categories: those where the DC-1 is connected directly to all of the amplifiers in the room, and those where the DC-1 is connected intoatapeorsignal processor loop of a preamp or receiver.

You may choose to connect the DC-1 in the tape monitor, or external processor loop of a preamp, allowing you to completely bypass the DC-1. This, however, will make the system somewhat more complicated to operate, and adds a gain stage (the preamp) that is not needed.


Connecting the DC-1 as a preamp

Input sources can each be connected directly to the DC-1 inputs. A typical system might use the TV, VCR1, V-DISC and CD and TUNER (output through a preamp). Since TAPE, TUNER and CD are audio only, the video output will default to the video signal from VCR1. This feature allows TV or other video source viewing while different audio is playing.

Connect your main stereo amplifier to the DC-1 FRONT outputs. Connect any additional amplifier/speaker combinations to the remaining outputs on the DC-1: side amplifiers to the SIDE outputs, rear amplifiers to the REAR outputs, center-channel amplifier to the CENTER output and the subwoofer amp to the SUBWOOFER output. If you are using THX-type dipolar surround speakers, the amplifier driving them should be connected to the DC-1 SIDE outputs.

Whenever possible, connect both analog and digital outputs of digital sources.

Note the use of Y-connectors to feed the DC-1 Record output to both the VCR and the tape deck. In this example, Y-connectors are also used to direct the VCR audio output to both the TV and VCR inputs on the DC-1 so that the VCR can be used as a TV tuner.

The DC-1 has five composite video inputs, three of which are paired with Video Connections

S-Video. Connection to an S-Video input will override any standard composite signal connected via the RCA-type connector. Note that an S-Video input will be output on both the composite and S-Video outputs. The converse is not true—

composite input signals will not be output as S-Video.

You can assign any video source to any (or all) of the eight DC-1 inputs via the Input Configuration submenu of the Setup menu. This can be very useful in systems which use a VCR as the tuner for TV viewing, as the video feed from the VCR can be assigned to both the VCR and TV inputs. Audio can be fed to both inputs with Y-connectors. (Do not use Y-connectors on video signals.) This allows the video signal from the VCR to be used for both TV and VCR viewing.

You can also assign it to audio-only sources such as an AM/FM tuner, to enjoy music from another source while viewing the TV.

It is important to remember that the impedance characteristics of composite video and digital audio are different from analog audio. You should only use cables specifically designed for video and digital audio. Consult your dealer for recommendations.

Like the video inputs, the digital inputs can be set up to be selected with any of Digital Audio the eight inputs via the Setup menu. Two coaxial (RCA) and two optical Connections (TOSLINK™) inputs are provided. No default assignments are made for the coaxial or optical inputs.

Using the digital inputs will always provide better performance. Whenever possible, make analog connections as well, as some older laser discs do not contain digital soundtracks (and, therefore, require an analog connection). The analog connection is normally used for the RECORD and ZONE 2 outputs.

For recording purposes, it is advisable to connect the analog outputs of your Recording a Digital digital source, as the record outputs do not have dedicated D/A converters. Source Using the

(There are already eight in the DC-1!) It is possible to use the internal D/A DC-1 D/A Converter converters in the DC-1 for recording. The DC-1 must be in the Effect bypass mode. Select the input you want to record, then press the REC/ZONE2 button until the display reads SELECTED FOR RECORD.

Digital Input Status If digital audio input is selected without a valid source, or if a digital error state Detection which affects audio performance is detected, all audio outputs are muted and an error message is displayed for two seconds. The associated input on the front panel will display a blinking red LED while the error condition persists. When valid data is restored, the unit returns to normal operation. Whenever emphasis is detected within the incoming digital audio channel status bits, de-emphasis is automatically applied.

RECORD/ZONE 2 The DC-1 offers independent input selection and level control for the Main and Operation Zone 2 outputs. Three different methods of control are described below. (Note that Record and Zone 2 outputs are in parallel, so input selection for Zone 2 will effect identical changes at the Record outputs.)

Zone 2 controls available during normal operation

In normal operation, pressing RECORD/ZONE 2 on the remote control or the front panel will assign the current input selection to the Record/ Zone 2 outputs without affecting the Main outputs. Holding down RECORD/ZONE 2 allows Zone 2 adjustment of VOLUME and MUTE without affecting the Main outputs. To de-assign the Record/Zone 2 outputs, simply press and hold RECORD/ ZONE 2 again.

For example:

VCR2 is selected for the Main outputs and its associated green front panel LED is illuminated. Pressing and holding down the front panel REC/ZONE 2 button will light the red LEDs above the REC/ZONE 2 button and the currently selected input (in this example, VCR2). The display will show:

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