user manual

LMS-D4

CROSSOVER SETTINGS

1) Input Gain

INPUT GAIN

Gain = 0.0dB

The input gain sets the attenuation of the signal before any processing is applied. The value ranges from -40dB to +6dB in 0.5dB steps. In stereo mode the gain value applies to both inputs.

2) LF Bass Boost

BASS BOOST

Trim = 0.0dB

Where implemented, the range of values are from +6.0 dB to –6.0 dB, in 0.5 dB steps. The corner frequency is fixed and optimised for each system, and typically it is around 100Hz.

The Bass Boost control allows for an easy adjustment of the response to match variations in the acoustic environment. Generally the 0 dB setting will provide an optimally flat response for a single cabinet in free space.

When the cabinet is used in direct proximity of a reflecting surface (i.e. half-space conditions), the LF level should be reduced to maintain the same balance (in theory by 3dB). Similarly when a number of cabinets are closely coupled (e.g. in arrays) the LF control should be used to reduce the level in the bottom end.

This control can also be used to create subjectively desired changes to the tonal balance. Please remember to use it with care, as excessive boost could mean more stress for the drive units and make it more critical to have the limiters accurately set.

Bass boost is not implemented in settings for speaker systems with subwoofers.

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Turbosound LMS-D4 user manual Gain = 0.0dB, Trim = 0.0dB, Input Gain, LF Bass Boost
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LMS-D4 specifications

The Turbosound LMS-D4 is a high-performance digital loudspeaker management system designed for both live sound and fixed installations. This advanced processor offers powerful features and cutting-edge technologies that enable audio engineers and sound technicians to achieve optimal sound quality and system performance.

One of the main features of the LMS-D4 is its four input and four output configuration, which provides flexibility in audio routing and signal processing. The system allows users to manage multiple audio sources and outputs simultaneously, making it ideal for complex sound setups. With an intuitive user interface, the LMS-D4 provides easy access to its wide range of processing tools, ensuring that users can make real-time adjustments effortlessly.

The LMS-D4 employs advanced digital signal processing (DSP) technology. This technology includes high-quality crossover configurations, EQ, delay, and limiting functions that enhance the overall audio quality. Users can benefit from precision audio control, allowing them to tailor the sound to specific environments and audiences.

Another key characteristic of the LMS-D4 is its robust connectivity options. The system features both analog and digital inputs, including AES/EBU, ensuring compatibility with various audio sources. The inclusion of CobraNet and Dante connectivity options facilitates easy integration into networked audio systems, enhancing the system’s versatility.

Additionally, the LMS-D4 incorporates comprehensive monitoring and diagnostics tools. The real-time analysis functionality allows users to assess system performance and make necessary adjustments on the fly. This feature is essential for live sound applications where immediate response is critical to maintaining audio integrity.

The build quality of the LMS-D4 is also noteworthy. It is housed in a rugged chassis designed for durability, making it suitable for both touring applications and permanent installations. The unit's front-panel LED indicators provide clear status feedback, enhancing operational efficiency.

In summary, the Turbosound LMS-D4 is a powerful digital loudspeaker management system that combines flexibility, advanced DSP processing, and robust connectivity options. With its user-friendly interface and monitoring capabilities, it simplifies complex audio setups, ensuring professional results in any live or fixed installation scenario. The LMS-D4 stands out as an essential tool for audio professionals seeking to elevate their sound management capabilities.
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