Sound Performance Lab 9632 manual Operation Safety, Input and Output PPM metering

Indications and Metering: The Loudness Maximizer is equipped with PPM meters for input and output that show the signal level with maximum resolution (0.01dB) just before 0dB.

The Signal LED is the first LED in each PPM meter that lights up when a digital source is present at the inputs

The Possible LED chain represents the first device to show how much subjective loudness can be gained. Initial settings for the DESIRED GAIN control are shown here.

The Done LED chain indicates the percentage of achieved gain change. It shows how much of the Desired gain setting was actually realized.

The philosophy behind the digital audio processors is that they are designed to be operated like analogue units; there is only one INFO menu but no multi-function controls. The LCD readout simply shows the current encoder positions and the preset number. The encoders are built without clicks or detents, so they feel like analogue pots. Our DSP platform uses two Motorola 56002 DSPs running at 66 MHz. This enormous computational power guarantees real-time operation where sophisticated DSP algorithms will not be restricted by resource limitations. The general concept is that each digital processor should fulfill only one task, in the most effective way possible, and with a minimum of controls and switches. As much as possible should be auto- mated to promote user-friendly operation – the external controls access only the sonically relevant parameters. Additionally all controls with a wide value range (e.g. 0 to 100) are programmed with an 'alpha-dial' logic. Turning the encoder rapidly causes the values to jump in steps of 10, whereas turning the encoder slowly causes the values to proceed in single increment steps.

The housing of the Loudness Maximizer has the standard 19"- EIA format and occupies 1U (44 mm) in your rack. When installing the unit in a 19"-rack, the rear side of the unit needs some support, especially in a touring case. The Loudness Maximizer should not be installed near units which produce strong magnetic fields or extreme heat. Do not install the Loudness Maximizer directly above or below power amplifiers.

Check that the voltage details quoted on the back panel are the same as your local mains electricity supply. Use a minus (-) screwdriver to set the voltage selector to the voltage for the area in which the unit will be used.

Never cover up the ventilation slots on the top of the unit. If, during operation, the sound is interrupted or indicators no longer illuminate, or if abnormal odor or smoke is detected, or if liquids are spilled on the unit, immediately disconnect the power cord plug and contact your dealer.

Only clean your Loudness Maximizer with a soft, lint-free cloth.

L o u d n e s s M a x i m i z e r

Input and Output

PPM metering

POSSIBLE-LED-bar shows how much subjective loudness can be gained

„Analogue“ control feeling

The DSP Platform: Enormous computational power guaranteeing real-time operation

User-friendly programmed software

Operation Safety

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