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

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.

LMS-D4 user manual Page 11