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MPE 28 MANUAL
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1. INPUT This is a tip ring sleeve TRS balanced input connector Tip is ring is and sleeve is ground For unbalanced operation use either a TS or TRS plug If using a TRS plug connect the ring amp sleeve together A U 3 Pin OUTPUT Active balanced output Pin 2 is pin 3 is pin 1 is signal ground and the shell is chassis ground 14 OUTPUT This is a tip ring sleeve TRS balanced output connector Tip is ring is and sleeve is ground For unbalanced operation use a TRS plug connect your hot lead to the tip ground to the sleeve and leave the ring open NN Ww MIDI IN This connector allows the MPE 28 to respond to external MIDI control MIDI OUT This connector transmits MIDI Program Changes etc to the input of another MIDI device MIDI THRU This output contains all the MIDI information exactly as it comes into the MIDI input None of the controls on the MPE 28 have any effect on this output Normally used for daisychaining purposes wo Remote Power Supply Input USE ONLY A RANE MODEL RS 1 RAP 10 FRS 8 OR OTHER REMOTE AC POWER SUPPLY APPROVED BY RANE The MPE 28 is supplied with a remote power supply suitable for connection to this input jack Consult the factory for replacement or substitution gt GROUND LIFT Switch This switch gives the user the option to tie signal ground to chassis ground Typically a system is quieter in the LIFT position See CHASSIS GROUNDIN
2. Preset if it has not been overwritten in Stored Memory MIDI CHANNEL Pressing the CHANNEL button displays the currently assigned MIDI Channel Pressing UP DOWN increases or decreases the MIDI Channel number You may select from1 through 6 orOF F MIDI CONTROL The MPE 28 can be controlled by another MPE an RPS 4 Remote Program Switch contact closure to MIDI Program Change converter personal computer or any device capable of transmitting MIDI A DOS program is available from the factory by request Details are you guessed it in the MPE Users Guide OTHER FEATURES To say the MPE 28 does a lot more than explained in this brief space is like saying a personal computer makes a good paperweight Please read the MPE Users Guide for a more in depth look at your MPE 28 POWER SUPPLY As noted elsewhere in this manual NEVER USE A POWER SUPPLY WITH YOUR MPE 28 OTHER THAN THE ONE SUPPLIED FROM THE FACTORY OR AN EXACT REPLACEMENT OBTAINED FROM RANE CORPORATION The MPE 28 s power supply input is designed for an AC supply delivering 18 24 volts from a center tapped transformer capable of supplying at least the current demanded by this product Using any other type of supply may damage the equalizer and void the warranty which at two years parts and labor is worth safeguarding don t you think Additional information and full technical specifications will be found on the enclosed MPE 28 Data Sheet SOFTWARE UPDATES Please fi
3. display to begin blinking the current Stored Memory location number If you want to store your Working Memory curve into this location press STORE again and your wish shall be granted If not select another Stored Memory location using the number keys or the UP DOWN buttons When the correct location is displayed press STORE again The curve in the selected location has now been replaced with the curve of the current Working Memory COMPARING CURVES A most useful feature is the ability to compare the changes you have just made with what is in the Stored Memory location The MPE 28 makes this easy by using the MEMORY button when in the EQ Edit mode All changes to the Working Memory are compared with the Stored Memory by pressing and holding the MEMORY button The letterC appears on the EQUALIZER display indicating a compare function is being performed While the MEMORY button is held what is heard is the Stored Memory curve treleasing the MEMORY button allows you to hear the edited Working Memory version USING STORED CURVES To use any of the curves in Stored Memory all you do is show the Stored Memory location on the red SYSTEM display Whatever number shows is the label of the Stored Memory location for the current Working Memory Working Memory is the scratch pad where you work You can think of it as the 129th memory location like the 19th hole in golf except you cannot actually store anything here only operate on it or lis
4. the wiring is the same as far as polarity of pins INPUT The input on the MPE 28 is balanced unbalanced is concerned When hooking up an unbalanced Output using This means that standard 1 4 connectors on the ends of any the 3 pin disregard the italics in the preceding paragraph good quality cable will work well between your signal DO NOT connect pin 3 to pin 1 Leave it open please Thank sources signal processing and amplification If balanced 1 4 you input is your choice use a Tip Ring Sleeve connector wire You should be aware also that just because we indicate the tip as hot the ring as return and the sleeve as that a sleeve on a 1 4 or pin one on a 3 pin is used for ground signal ground The MPE 28 also gives you the opportunity to ing it is not always wise to use it Rane Note 110 included use a 3 pin XLR input connector Balanced operation with your unit goes into the reasons and logic behind all of through this Input requires pin 2 be used as hot pin 3 as this madness Please have a look at it to try to attain the best return and pin 1 as signal ground Unbalanced sources performance possible from your MPE 28 FRONT PANEL DESCRIPTION 4 50 63 80 100 125 160 200 250 315 400 500 630 SYSTEM tk 12k 16k 2k 25k 315k 4k 5k B3 8k 10k 125k 16k gt a 0 o 80 08 Q Oe poqooooo0o00on PRGCHG KEY PARAM DUMP PRESET RAMP_ Oe FUNCTION Se 1 BYPASS Pressing thi
5. AN OPERATING SERVICE MANUAL MPE 28 MIDIPROGRAMMABLEEQUALIZER O cuRE LeveL 315 50 63 8 100 125 160 200 250 35 40 50 630 UP SYSTEM BYPASS WEIGHT 80 1k 42k 1 6k 2k 25 315k 4 5k 63k 8 10k 125k 16k D G g OL Gi 345 Oo OA b 276 U Q O TG So win Be OOO D Oooooo EXPRESS BANK 00 np 1 L ass I SS 2 n 4 5 6 7 8 B O OCTAL A B DEVICE OWN PRGCHG KEY PARAM DUMP PRESET RAMP LOCKOUT FUNCTION DOWN 40 m O MEMORY CHANNEL MAP QUICK START Reading owners manuals is like eating vegetables a nuisance which is necessary at least according to your mother It ensures longevity and proper operation of your systems but chocolate soda is more fun In the event you want to find a short cut we provide this section to help you avoid the spinach At least read this and save the rest for later And remem ber clean your plate people are starving somewhere Upon initial power up you should see the words Rane MPE 28 r X X the current revision level scroll by in the SYSTEM display window Then the SYSTEM display indicates the last memory location used before the power was turned off and the green MEMORY indicator lights The MPE 28 is now ready to use The MPE 28 has two levels of security lockout If you think your unit may be in either of these lockout modes please consult the enclosed MPE Users Guide for further instructions Two terms need to be learned early on The
6. E TO BEND BASED ON CONTINUOUS CONTROLLER OR CHANNEL PRESSURE AFTERTOUCH DATA OMNI ON POLY Mode 2 OMNI ON MONO OMNI OFF POLY Mode 4 OMNI OFF MONO
7. G note on last page for details 10 Chassis Ground Point A 6 32 screw is used for chassis grounding purposes See CHASSIS GROUNDING note on last page for details OPERATING INSTRUCTIONS THE BASICS Don t be intimidated by the fact that the MPE 28 is a programmable equalizer with a lot of buttons on the front and none of the familiar slide controls and rotary pots and such The product is very straightforward and following the steps below should get you started EDITING CURVES Changing the overall Level or equalizer curve requires the use of the EQ Edit mode To edit any curve push the EQ button repeated operation cycles between the lower half of the available frequencies the upper half and Off Now press LEVEL or any of the 14 frequency buttons the yellow LED lights to acknowledge selection Next scroll the UP DOWN buttons until the desired Level shows on the green EQUALIZER display When finished editing push the STORE button once The number in the SYSTEM display starts blinking to remind you to select a location or to use the current one Enter a new number if needed then push STORE again to place the new curve into the Stored Memory location shown The MPE Users Guide should be consulted for further details STORING CURVES Any curve may be stored in any or all of the 128 memory locations Once stored this location is referred to as the Stored Memory location To begin the process press STORE once This causes the SYSTEM
8. chassis are tied to a good earth ground 3 Units with outboard power supplies do not ground the chassis through the line cord Make sure these units are solidly grounded by tying the Chassis Ground Point to known earth ground such as a power amplifier chassis Use a star washer to guarantee proper contact Rane Corporation 10802 47th Avenue West Mukilteo WA 98275 5098 TEL 206 355 6000 FAX 206 347 7757 All features amp specifications subject to change without notice 520 259 MAY94 RANE CORPORATION MPE 28 MIDI Implementation Chart Date SEPTEMBER 1989 MIDI Programmable Equalizer Version 1 0 FUNCTION Transmitted Recognized Basic Default 1 1 16 Channel Changed OMNI ON OFF IS SELECTABLE ON UNIT ASSIGNABLE AS EXPRESSION CONTROLLER A SINGLE OR ALL CONTINUOUS CONTROLLER S ARE ASSIGNED AS THE EXPRESSION CONTROLLER ALL CONTROLLERS ARE TREATED AS SINGLE BYTE RESET ALL CONTROLLERS Default Messages Altered Note Number True Voice Velocity Note ON Note OFF After Key s Touch Ch s Pitch Bender Control Change X X X o 0 127 ON BOARD MAPPER 1 128 or A11 B88 OCTAL DECIMAL FORMAT SELECTABLE PROTOCOL DEFINED System Exclusive IN SEPARATE DOCUMENT System Songs Pos Song Sel Common Tune System Clock Real Time Commands Local ON OFF All Notes Off Active Sense Reset SYSTEM RESET EXPRESSION IS A MODE OF THE MPE 28 THAT ALLOWS AN EQ CURV
9. e MPE Users Guide for further information ioe 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 IKHz 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 amp DOWN Used to increase or decrease parameters in all operating modes 13 SYSTEM Display This red digital display indicates system information such as S
10. first is Stored Memory Stored Memory is any of the 128 locations provided for curves The second is Working Memory Working Memory is a scratch pad location used for changing curves before you put them into Stored Memory Working Memory is also what you hear The first few Stored Memory locations programs to 21 were preset at the factory A table of these is in the MPE Users GuideAppendix In the beginning these give you instant curves for experimenting If you want a different curve press the UP DOWN buttons to scroll or directly enter a Stored Memory number via buttons 0 through 9 observe the red SYSTEM display Please note that all Stored Memory numbers must be at least two digits e g Stored Memory number4 is entered as 04 etc For direct access to Stored Memory locations above9 9 push the 100 button then the next two digits For example to recall Stored Memory1 2 5 press 100 2 and 5 and you will have arrived Once the last digit is entered the Stored Memory is instantly called up what you see is what you hear Changing the overall level or equalizer curve requires the use of the EQ Edit mode Push the EQ button repeated operation cycles between the first half of the frequencies the second half and neither to select the frequencies you wish to modify Now press LEVEL or the frequency button desired the yellow LED lights Next scroll the UP DOWN buttons until the desired level shows on the green EQUALIZER display When finished ed
11. iting push the STORE button once enter a new Stored Memory number if needed then push STORE again to place the new curve into the Stored Memory shown on the red SYSTEM display Presto facto it s Miller time See the enclosed MPE Users Guide for futher details The MPE 28 presets can be recalled either by front panel or externally through MIDI If you have a PC with a MIDI interface Rane can supply you with a DOS graphic editor program just for asking no charge If you have a Mac see the Galaxy Universal Librarian from Opcode Systems Other software companies may have other librarians that will work If you would like to change presets with external switches check out the Rane RPS 4 Remote Program Selector CAUTION NEVER CONNECT ANYTHING EXCEPT RANE MODELS RS 1 RAP 10 OR FRS 8 AC POWER SUPPLIES TO THE RED THING THAT LOOKS LIKE A TELEPHONE JACK ON THE REAR OF THE MPE 28 This is a low voltage AC power input and requires some special attention if you use anything except an approved Rane power supply SYSTEM CONNECTION When connecting the MPE 28 to other components in require that pin 1 be connected to pin 3 on the Input connec your system for the first time leave the power supply for last tor only Therefore pin 2 is hot pins 1 and 3 are signal This will give you a chance to make mistakes and correct ground them before any damage is done to fragile components in the OUTPUT The MPE 28 offers a similar choice of output system connector and
12. ll out and mail in the enclosed registration card Notification of any software revisions will be mailed to all registered users Failure to register could result in missing important update information IMPORTANT NOTE FCC amp VDE NOTICE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules and similar requirements found in European specifications VDE 0871 0875 These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio commu nications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense USE OF SHIELDED MIDI CABLES IS REQUIRED FOR FCC COMPLIANCE CHASSIS GROUNDING The unit is shipped with its Ground Lift switch in the CHASSIS GND position This ties signal ground to chassis ground If after hooking up your system it exhibits excessive hum or buzzing there is an incompatibility in the grounding configuration between units Here are some things to try 1 Try combinations of lifting grounds on units supplied with Ground Lift switches or links 2 Verify all
13. s 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 A OL Overload OL indicator This red LED illuminates any time the input filters or output reaches 4dB below clipping O 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 th
14. ten to it When a Stored Memory location shows up on the SYSTEM display the curve is actually in two locations safely stored at the memory location shown and in the Working Memory scratch pad ready for you to change if you want You can do anything you want to the Working Memory without altering the original stored version When complete you must store this new version either in place of the old curve or into a new location This is the significance of the MEMORY light blinking Once you do anything to the original curve the MEMORY light starts blinking to remind you that you have changed it If you want a different curve press the UP DOWN buttons to scroll or directly enter a number via buttons 0 through 9 observe the red SYSTEM display Please note that all Stored Memory numbers must be at least two digits e g Stored Memory number 4 is entered as 04 etc For direct access to Stored Memory locations above 9 9 push the 100 button then the next two digits For example to recall stored memory 1 2 5 press 100 2 and 5 Once the last digit is entered the program is instantly called up what you see is what you hear What could be simpler BYPASS MODE Pressing the BYPASS button causes all audio in the unit to be routed around the equalizer electronics Please note that a bypassed condition cannot be stored If recalling a flat curve is required simply store a program in which all filter and level controls are set to zero Factory
15. tored 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 TP f2 POS RING 3 NEG SLEEVES 1 SIG GND AUTO BAL UNBAL INTERFERENCE RECEIVED INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION _ REAR PANEL DESCRIPTION MADE N USA MIDI By POWERI LANT SIC CND goy Zo goy CORPORATION O o g in moss IN OUT THRU a MUKILTEO WA 500mA SS 2 EQUI IPMENT 3 Pin INPUT Active balanced input Pin 2 is pin 3 is gt pin 1 is signal ground and the shell is chassis ground For unbalanced use connect pins 3 and 1 together and drive pin 2 2 14
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