User manual BIAMP MSP22E AND MSP11

[. . . ] Since CDs can be recorded at different levels, the volume from one CD to another can vary significantly. In the background music system it is desirable for the music to maintain a consistent level. A Limiter or Compressor could be employed, but they would only squash the dynamics, and diminish the quality of the music signal. A Leveler, on the other hand, actually controls the overall level of the signal, without adversely affecting the dynamics of the signal itself. [. . . ] From the factory, Gain Matrix #2 is the fourth processing block, positioned between the EQ and the Crossover. Under these circumstances, Gain Matrix #2 might typically be used to allow Gain Manager & EQ processing for two independent input signals, which can then be combined as a common feed to the Crossover & Delay (HF & LF outputs or delayed zones). The appearance of the Gain Matrix #2 screen will change, instead providing a 4x4 mix-matrix, when `Gain Matrix Linking' is activated (see Configuration Options screen on pg. 13). 8 SETUP CROSSOVER SCREEN The Crossover screen is used to select the crossover mode, and adjust the crossover settings. Channel 1 provides the High-Pass Filter (high-frequency output) and Channel 2 provides the Low-Pass Filter (low-frequency output). NOTE: Channel 1 & 2 signals are typically mixed together before entering the Crossover section (see Gain Matrix #2 on previous page). To enable the crossover mode, release the Bypass buttons for both Channels 1 & 2. These buttons may be `released' independently for certain applications. For example: releasing only the Channel 2 Bypass button would provide a full-range signal from Channel 1, while Channel 2 would provide only low-frequency signals. The crossover frequencies are adjusted by dragging the cursor left or right within the upper graph & lower graph areas. From the factory, Channels 1 & 2 are set for Linked Frequency, which allows adjustments made in either the upper graph or lower graph to affect both filters. Binary Mode selects a special group of Logic Inputs which can also be defined. This allows certain actions to be performed only when a specified condition of open/closed Logic Inputs exists within the group. When a Binary Mode is selected, indicators for the chosen group of Logic Inputs will appear below. Binary Combination then selects the specific combination of open/closed (on/off) Logic Inputs that needs to exist (for the assigned actions to be performed). When a combination is selected, indicators will light (red) to designate which of the Logic Inputs within the group are closed (on) for that condition. NOTE: When a Binary Mode is selected, the chosen group of Logic Inputs can no longer be defined individually. It is not necessary to select a Binary Mode when simply defining individual Logic Inputs. Power-Up Actions allows specific actions to be assigned for the MSP22e to perform each time power is turned on. Echo Character selects the RS-232 ASCII character which will be transmitted via the MSP22e Serial Port whenever the selected Logic Input is switched. NOTE: From the factory, no echo characters are assigned to the Logic Inputs. Echo Characters are used primarily for customizing remote control commands amongst various RS-232 controlled products within a system (see RS-232 Control on pg. [. . . ] For best performance, the PC ground and the chassis ground of the MSP22e should be at the same potential, and the PC should get AC power from the same source as the MSP22e (and any other audio equipment which is connected to the MSP22e). Since most lap-top computers are isolated from earth ground, this should rarely pose a problem. Serial Port Data Communications Parameters: The MSP22e communicates through the Serial Port at the factory selected rate of 38400 bits per second, with 8 data bits, 1 stop bit, and no parity. The MSP22e utilizes a subset of the standard 7-bit ASCII character set. [. . . ]