DD-8Power Amplifiers

Basic Operation

7. Speaker Outputs

Provides connection for up to four pair of stereo speakers (eight speakers total) to the DD-8.

Connection to speakers is provided via phoenix-type connectors that accept bare wire terminations. The connectors are grouped in pairs with one connector each for pair A, B, C and D. Each pair consists of four wire terminations: positive (+) and negative (–) for the Left channel and positive

(+)and negative (–) for the Right channel. To attach speaker cables to the phoenix connector, strip approximately ¼” of insulation off of the end of the positive and negative leads of the cable and insert the bare ends into the corresponding position of the phoenix connector, tightening the screw terminals on top to secure the termination. Repeat this procedure for each speaker.

NOTE: It is recommended to use 16-gauge or larger speaker wire in order to ensure low- impedance connections between the amplifier and speakers. Be sure to observe correct polarity when making connections to speakers: Positive (+) leads to the Positive (+) terminals and Negative (–) leads to the Negative (–) terminals.

CAUTION: The speaker outputs on the DD-8 are balanced (differential) and should not be connected to any equipment that grounds the Negative (–) terminals.

8. Power Save On/Off

Enables the extreme low-power automatic standby mode of the DD-8.

The DD-8 is a highly efficient design with lower-than-average power consumption at standby, idle and in normal operation mode. The Power Save mode can be enabled to lower standby power consumption even further by disabling all circuitry except that required for the front panel standby button. If the Power Save switch is set to the On position, the DD-8 will automatically revert to standby and enter this extreme low-power state after one hour without signal present at any of the inputs.

If the Power Save switch is in the Off position and the DD-8 is active, it will remain on indefinitely regardless of the presence of input signals until the amplifier is put into standby mode via the front panel standby switch.

NOTE: The Power Save function can only be used when operating the DD-8 from the front panel standby button. If a trigger input is being used, it will override the Power Save function.

9. Signal Sense On/Off

Enables the audio Signal Sense circuitry for the Bus and Local inputs.

The Signal Sense circuitry allows the DD-8 to activate a channel (1, 2, 3, 4, 5, 6, 7 or 8) when an audio signal is detected at the corresponding input and deactivate a channel (1, 2, 3, 4, 5, 6, 7 or 8) when no audio signal has been present for 30 minutes. When the DD-8 is powered on and the Signal Sense switch is set to the On position, amplifier channels with signal present will be active. Channels without signals present will remain switched off until signals are detected. In this mode, power consumption is lowered by switching off idle channels and audio performance is improved by eliminating crosstalk on adjacent unused channels. In cases where Signal Sense is On and no audio signals are present on any channels for more than 30 minutes, all channels will be switched off and only the front panel standby button will glow blue while the DD-8 continues to monitor all inputs for a signal.

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Operation Manual

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Lexicon DD-8 manual Speaker Outputs, Power Save On/Off, Signal Sense On/Off
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DD-8 specifications

The Lexicon DD-8 is a powerful digital delay processor that has gained recognition among audio engineers and musicians for its versatility and high-quality sound processing capabilities. Renowned for its advanced features and technologies, the DD-8 offers unmatched performance in both studio and live settings.

One of the main features of the Lexicon DD-8 is its ability to deliver studio-quality delays with unprecedented precision. The device is equipped with multiple delay algorithms that cater to various audio applications, including classic analog-style delays, digital delays, and more complex modulation effects. Each algorithm is designed to produce a richness of sound that enhances any audio mix, making it an essential tool for creative sound design.

The DD-8 stands out with its comprehensive user interface. It incorporates a bright, easy-to-read display and intuitive controls, which allow users to navigate through parameters effortlessly. This includes the ability to adjust delay times, feedback settings, and modulation depths in real time. Additionally, the DD-8 features a dual-path design, enabling users to apply different delay settings to two separate channels simultaneously, providing greater flexibility for stereo effects.

In terms of connectivity, the DD-8 excels with its robust input and output options. It supports both analog and digital connections, including S/PDIF and AES/EBU formats, ensuring compatibility with a wide range of audio equipment. This makes it an ideal choice for both professional studios and live performance environments.

One of the standout technologies in the DD-8 is its sophisticated DSP (Digital Signal Processing) engine. This powerful processing unit allows for a high degree of customization and control over the audio signal, enabling users to achieve complex soundscapes. The engine also ensures minimal latency, making it suitable for real-time applications without compromising sound quality.

Furthermore, the Lexicon DD-8 is built with high-quality components that contribute to its reliability and durability. Whether used in a studio or on stage, the unit's rugged construction ensures it can withstand the rigors of frequent transport and use.

In summary, the Lexicon DD-8 is a versatile and powerful digital delay processor that combines advanced sound processing capabilities with an intuitive user interface. Its rich feature set, combined with high-quality sound and dependable performance, makes it a valuable asset for any audio professional seeking to elevate their audio productions. Whether for music production, live sound, or creative sound exploration, the DD-8 remains a top choice in the realm of audio processing technology.
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