Rane MPE 28 Operating And Service Manual - page 2

FRONT PANEL DESCRIPTION

1. BYPASS. Pressing this button toggles between Bypass and Active modes (LED on = BYPASS).

2. CURVE WEIGHT. The CURVE WEIGHT button weights curves; hammers let you hammer things and wrenches let you

wrench things. See the MPE Users Guide for details on summing two curves together.

3. STORE. Pressing this control transfers the contents of Working Memory into Stored Memory at a location selected by either

the number keys or the UP/DOWN buttons. Pressing STORE once prompts the user for the Stored Memory location;

pressing it again writes the information to Stored Memory.

4. OL. Overload (OL) indicator. This red LED illuminates any time the input, filters or output reaches 4dB below clipping.

5. EQUALIZER Display. This numeric green LED display indicates the boost/cut level of an individual filter, or the overall

Level, whichever is selected (LED on). The MPE 28 must be in the EQ Edit mode to activate this display.

6. EQ. Pressing this button once places the MPE 28 in the lower frequency EQ Edit mode (yellow LED on); a second depres-

sion enters the upper frequency EQ Edit mode (green LED on); and a third time takes the MPE 28 out of the EQ Edit mode

(both LEDs off).

7. LEVEL / EXPRESS. In the EQ Edit mode, this button sets the overall level of the equalizer. When not in the EQ Edit

mode, this button sets Expression parameters. Expression allows an EQ curve to “bend” (change) based on MIDI continuous

controller or channel pressure aftertouch commands. Please see the MPE Users Guide for further information.

8. 31.5Hz / 800Hz / BANK. In the EQ Edit mode, this button selects either the 31.5Hz or the 800 Hz filter. In the Normal

Operating mode, pressing this control locks the MPE to the current bank; something similiar to a “tens hold” function. When

using the octal numerical base system of notation instead of the decimal numerical base (explained in the MPE Users

Guide) it has a similar function.

9. 40Hz / 1kHz / 100 / OCTAL A/B.  In the EQ Edit mode, this button selects either the 40Hz or the 1kHz filter. In the Normal

Operating mode this gets you directly to the 100s, or switches between A/B banks when using the octal numerical base.

10. 50Hz / 1.25kHz to 500Hz/12.5kHz.  In the EQ Edit mode, these buttons select the filters associated with their labels. In the

Normal Operating mode they allow direct access number entry for Stored Memory selection. They also select several

secondary features when used with the FUNCTION button. To find out  about their uses, please see the MPE Users Guide.

11. 630 / 16kHz / FUNCTION. In the EQ Edit mode, this button selects either the 630Hz or the 16kHz filter. In the Normal

Operating mode it acts as a shift-key to select the secondary  features. Again we must reference the MPE Users Guide for

details. Sorry.

12. UP & DOWN. Used to increase or decrease parameters in all operating modes.

13. SYSTEM Display. This red digital display indicates system information, such as Stored Memory locations, MIDI Channel

selection, mapping assignments, lockout codes, Factory preset numbers, ramp step size, revision number, and so on.

14. MEMORY. Used to enter the Normal Operating mode. A flashing LED indicates Working Memory differs from Stored

Memory. When in the EQ Edit mode, all changes to the Working Memory are compared with the Stored Memory version by

simply pressing and holding the MEMORY button. What is heard is the Stored Memory curve; releasing the MEMORY

button allows you to hear edited Working Memory.

15. CHANNEL. Pressing this button displays the current MIDI Channel assignment for this MPE. Flashing indicates MIDI

OMNI mode is on. Change the MIDI Channel by using the UP/DOWN buttons, or number keys. Pressing this button again

returns the unit to Normal Operating mode.

16. MAP. Used for MIDI Mapping (re-routing program changes to memory locations) covered in the MPE Users Guide.