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Rane MPE series User Manual
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Rane MPE series User Manual

Midi programmable equalizer
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Rane MPE Users Guide
Foreword
Welcome to the MPE Users Guide. Within these
pages lurk the details you'll need to twiddle every
knob on your Rane MIDI Programmable Equalizer
with full confidence and expertise. If a quick start is
all that you desire, please refer to your MPE Oper-
ating/Service Manual.
The MPE family consists of two models. The
MPE 28 is a one channel, 1/3-octave, 28 band
equalizer. The MPE 14 is a two channel, 2/3-octave,
14 bands per channel equalizer. The MPE 14 and
MPE 28 both feature Rane's exclusive interpolating
constant-Q filters. Each model is digitally program-
mable, with equalizer bands adjustable +12dB to
-15dB in 1dB steps, and overall level adjustable
±12dB in 2dB steps. Both models feature 128
permanent memories, comprehensive MIDI imple-
mentation, and loads of powerful user functions.
This guide covers the operation, maintenance, and
applications of the entire MPE family.
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Summary of Contents for Rane MPE series

  • Page 1 Welcome to the MPE Users Guide. Within these pages lurk the details you’ll need to twiddle every knob on your Rane MIDI Programmable Equalizer with full confidence and expertise. If a quick start is all that you desire, please refer to your MPE Oper- ating/Service Manual.
  • Page 2 A Stored Memory refers to one of the 128 per- manent Stored Memories on board the MPE (you may have seen other manufacturers use words like Program, Patch, or Preset in place of our term, Rane MPE Users Guide...
  • Page 3 SYSTEM display area on the right side of the MPE front panel will look something like: Enable OMNI Mode Enable Program Change Output Enable Key Scan Echo Enable Parameter Echo Set Device ID Dump Memory Rane MPE Users Guide...

  • Page 4: Detailed Operation

    If the number is less then 10, you must type in a leading 0. If the number is 100 or greater, press the 100 key before the tens and ones digits keys. Rane MPE Users Guide...
  • Page 5 Memories 100-109. Pressing the BANK key or released. The contents of the recalled Stored again releases the bank, turning off the decimal point Memory occupy Working Memory. Let’s change the and returning you to normal number entry. equalizer parameters… Rane MPE Users Guide...
  • Page 6 1. Make sure you’re in the Normal Operating mode pressing its key ( 40-16k, or LEVEL). The LED and then enter the EQ Edit mode by pressing the associated with this parameter lights. The EQ key. Pressing the EQ key once selects the Rane MPE Users Guide...
  • Page 7 Take some time out to practice this for awhile, and now hear the contents of the Stored Memory. A then we will resume our discussion with some more letter “C C ” occupies the EQUALIZER display advanced user operations… Rane MPE Users Guide...
  • Page 8 Stored Memory. 2. Enter the ramp step size ( 01-27) using the number keys, or by pressing UP or DOWN. 3. Press F-RAMP to return to Normal Operating mode. The FUNCTION and RAMP LEDs turn off. Rane MPE Users Guide...
  • Page 9 Expression Edit mode. played as det det). You may scroll to this option, The current expression controller is displayed in or access it directly by pressing the UP and the SYSTEM display. DOWN keys simultaneously. Auto-detect forces Rane MPE Users Guide...
  • Page 10 Stored Memory or Factory Preset. sate for this, resulting in the curve below: Level 1 2 5 3 1 5 8 0 0 1 2 . 5 k Sum: Rane MPE Users Guide...
  • Page 11 WEIGHT LED turns off. You are returned to Memory you must first recall the Factory Preset to Normal Operating mode. Working Memory now Working Memory. The resultant curve always contains the weighted curve. occupies Working Memory. Rane MPE Users Guide...
  • Page 12 The password is a three digit security contains a flashing cursor, in preparation of code, which is programmable by the user. Rane accepting the current security code. ships the MPE with security code, “ 123”. You are advised to change this since anyone with access to 2.
  • Page 13 Normal Operating mode. The MIDI CHANNEL LED turns off. If you scroll past channel 16 (using the UP or DOWN keys) you encounter an option called off off. Selecting off off severs the MPE from the MIDI system. Rane MPE Users Guide...
  • Page 14 The MPE can be instructed to transmit MIDI Program Change # Recall Stored Memory # program change commands whenever a Stored Memory is recalled via the MPE front panel. To do so, perform the following steps: Rane MPE Users Guide...
  • Page 15 Now that your MPE has an identity, it can talk to mode. The MAP LED turns off, the MEMORY the outside world, via MIDI SYSEX. Two types of LED stops flashing. SYSEX messages can be enabled for transmission, Key Scan Echo and Parameter Echo. Rane MPE Users Guide...
  • Page 16 MPE, and the release of that key is Further details on the MPE SYSEX implementa- not (if you unplugged the MIDI cable before the key tion are covered in Rane documents: was released, for example), MPE’s receiving key scan messages assume the key presses are valid for...
  • Page 17 DUMP LED flashes, indicat- are well on your way to becoming a Zen master ing you are in this function (see the figure below). ninja MPE operator. The SYSTEM display indicates the default parameters the MPE will dump. Rane MPE Users Guide...
  • Page 18 The Rane RWS 4 is a four position wall mount or speech. The switch can be located away from the switch designed to fit a 75 ohm coax wall plate. It will supply four program changes to the MPEs using any 3 conductor cable.
  • Page 19 RPS 4. Next, using the cable supplied, connect the POWER OUT jack on the RPS 4 to the MPE’s red POWER jack. All other applications require using the optional Rane RS 1 remote power supply (NOT SUPPLIED). Connect the RS 1 to either red POWER jack.
  • Page 20 This DOS program is supplied at no charge from the Rane factory (by request). For Macintosh™ users, Opcode Systems has a Galaxy librarian for the MPE series.
  • Page 21 Rane MPE Users Guide...
  • Page 22 Each slave is given a different device ID. The the Expression feature. master communicates with each slave independently by adjusting its device ID to match each slave. Only use MIDI THRU’s with 4 or less slaves. Rane MPE Users Guide...
  • Page 23 RPS 4. Contact clo- sures are converted to MIDI program change com- mands. This configuration allows MIDI programs 1- 4 to be remotely activated, while the MPE remains in Lockout Mode. See page 18 for RPS 4 details. Rane MPE Users Guide...

  • Page 24: Battery Maintenance

    The battery should be checked every year or so. N—If no audio passes, the MPE does not have This can be carried out at any Rane warranty station. power. Check your connections. If the battery needs replacement, do not attempt to do it yourself.
  • Page 25 MIDI channel, or the receiver should be in Omni mode. 4. Is the receiving device properly configured to receive MIDI program change commands? Some devices allow you to disable MIDI program change reception, verify that your device is properly enabled. Rane MPE Users Guide...

  • Page 26: Appendix A: Error Codes

    MPE’s CPU with other active tasks. The result is a variation in the time a curve transition requires. What all this means is the calculations that ensue have a small error tolerance of several milliseconds. Rane MPE Users Guide...
  • Page 27 Tbc = Time for EQ band to change one step = 200µs be a little higher (typically 5%) due to competing Tlc = Time for overall level to change one step = 900µs software tasks. Toh = Time required for overhead per step = 600µs Rane MPE Users Guide...

  • Page 28: Appendix C: References

    1/2 second (500ms). The sequencer resolves into Audio Eng. Soc. , vol. 34, pp. 611-626 (Sept. 1986). bar:beat:ticks with 120 ticks per beat (4.2ms be- 2. Terry Pennington, The Rane GE 30 Interpolat- tween ticks). ing Constant-Q Equalizer, Rane Note 117 (Rane We determined that EQ changes take 3ms to Corp., 1987).

  • Page 29: Appendix D: Mpe 14 Factory Presets

    Comment: Stereo Low Shelving Boost (3dB) Comment: Stereo Low Shelving Boost (6dB) Comment: Stereo Low Shelving Cut (3dB) Comment: Stereo Low Shelving Cut (6dB) Comment: Stereo High Shelving Boost (3dB) Comment: Stereo High Shelving Boost (6dB) Rane MPE Users Guide...
  • Page 30 -12! 12¡ -12! 12¡ -12! 12¡ -12! 12¡ -12! 12¡ -12! 12¡ -12! Comment: “MIDI panner—feed mono signal into both inputs—use MIDI controller to pan.”* Comment: “HR-16 drum machine enhancer.”* * Presets courtesy of Craig Anderton. Rane MPE Users Guide...

  • Page 31: Appendix E: Mpe 28 Factory Presets

    Comment: High Shelving Cut (6dB) Comment: Camel Back Curve Comment: Rhythm Guitar—drops midrange to make room for vocals* -9 -15 -14 -14 Comment: Jazz Guitar Lead* Comment: Blues Guitar* Comment: Drum Machine Enhancer* *Presets courtesy of Craig Anderton Rane MPE Users Guide...
  • Page 32 FUNCTION Key ............. 2 Functions level, MPE 14 ............6 enable Omni mode ..........14 level, MPE 28 ............7 enable program change output ......14 with Expression ........... 9 set device ID ............. 15 set Ramp ............. 8 Rane MPE Users Guide...
  • Page 33 (gain), changing .......... 6 MPE 28 editing EQ parameters ......... 6 editing expression ..........9 level (gain), changing .......... 7 Normal Operating Mode ......... 3 Number Keys ............2 Octal A/B ..............5 Omni Mode ............14 Rane MPE Users Guide...
  • Page 34 Sudsy beverage ............4 Summing curves ........... 10 System parameters ..........2 Terminology ............2 Transmit memory ..........17 Troubleshooting ............ 24 Up and Down Keys ..........5 User Features summarized ........3 User modes description ........... 3 Rane MPE Users Guide...