Moltenvoltage Master control mv-58 User manual

v 1.09

OWNER’S MANUAL

Congratulations on purchasing the Molten Voltage™ Master Control MV-58

Master Control MV-58 is a programmable MIDI pedalboard controller that stores the tempo

associated with 128 programs, and transmits MIDI Clock to synchronize your MIDI-enabled effects.

Key Features

• Fully functional stand-alone Master Controller for MIDI-controlled PedalBoards

• Rock Solid MIDI Clock Generator

• Call up presets on your MIDI-enabled effects

• Solid, Professional-Grade construction, including

Riveted Steel MIDI Jack

• Large vivid LED display -- very easy to read

• Programmable pedalboard tempo control to

synchronize your effects

• Versatile tempo control, including precision tap

tempo

• MIDI Program Change and MIDI Start, Stop, and Clock output

• Robust, 128 program storage

• Causes other compatible Molten Voltage devices to self-program

• Simple, intuitive user interface

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.2

v 1.09

CONNECTING

Plug in a separate or isolated 9 volt, 2.1mm, 100mA minimum, tip negative DC Power supply into

the DC9V jack (I). Avoid powering Master Control using a "daisy chained" power supply that is also

connected to audio effects.

MV-58 - self-contained MIDI controller:

(A) CLOCK LED

(B) START Button

(D) DOWN Button

(E) UP Button

(F) TAP Button

(G) TEMPO LED

(H) SELECT Knob

(I) DC Power Jack

(J) MIDI OUT Jack

Designed with the end user in mind

The Master Control interface has been designed to make switching and storing programs as simple

as possible so the end-user can concentrate on being creative.

Programs are selected using the UP and DOWN buttons or by turning the SELECT Knob. The

selected program number is displayed on a large bright 3-segment LED display. The selected program is

engaged by pressing the START Button.

Making Master Control and all connected Molten Voltage devices save their current settings is even

easier - simply hold down the TAP Button for 2 seconds.

START Button (B)

The START Button is used to start and stop the MIDI Clock data output and to change Programs.

Each time the clock is started or stopped, a corresponding MIDI Start or MIDI Stop command is

sent. The Tempo will be reset and synchronized each time the clock is started.

Note: MIDI Start, Stop, and Clock are not channel-specific

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.3

v 1.09

If a Program is running (i.e. currently sending Clock data), pressing the START Button will stop the

clock unless a new Program number has been selected. In that case, pressing the START Button will send

the new Program Change message and the Clock data will continue uninterrupted.

When a new Program number has been selected but not yet engaged, the Display will flash. If no

Program is running, pressing the START Button will cause a MIDI Start command to be sent, together with

Program Change data, followed by a constant stream of Clock data.

Note: Stopping then re-starting the same Program does not cause additional Program Change

data to be sent.

Note: If the tempo has been altered but not saved, stopping then re-starting the same Program

does not recall the stored tempo, instead the altered tempo will continue to be used rather

than the stored tempo.

If a different Program is used, and later the previous Program is recalled, the previous

Program will recall its stored tempo rather than the altered tempo. In order to keep an

altered tempo, the Program must be saved, as described below.

Note: No program change is sent when powering up. To send the first program change, the start

button must be pressed.

TAP Button (F)

The TAP Button performs two separate functions, Tempo Control and Program Storage.

Tempo Control

When the TAP Button is first pressed, the current tempo is displayed. This provides a simple way

to check the tempo without altering it.

Pressing the TAP Button again within 2.5 seconds will adjust the tempo to the interval between the

taps. The new tempo starts right after the second or most recent tap. The time between the two most

recent taps always corresponds to the length of a quarter note.

The Display will show the adjusted tempo and light up the far right decimal point to indicate a new

tempo has been received.

Once at least one tap is received, the UP and DOWN Buttons and the SELECT Knob can be used to

"fine tune" the tempo.

Note: After the UP or DOWN Buttons are pressed or the SELECT Knob is turned, additional taps

have no effect.

Maximum tap interval = 2.5 seconds (24 bpm)

Minimum tap interval = 0.25 seconds (240 bpm)

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.4

v 1.09

Tempo change times out after 2.5 seconds. If a single tap was received, then the display again

shows the currently selected Program number.

If multiple taps were received, then “tPo” “SEt” (Tempo Set) will be displayed to indicate that a

new tempo has been received. The Display will then show the currently selected Program number.

Note: This new tempo is only temporary and will not be saved unless the Program is saved.

Tempo can be continually adjusted on-the-fly with the TAP TEMPO Button, whether or not MIDI

Clock is being sent.

Tempo changes affect only the current Program and are not stored unless the SAVE function is

used.

Similarly, Tempo changes do not affect any pending Program (indicated by a flashing Program

number). However, if the pending Program uses the "oLd" tempo, it will use the existing tempo.

Program Storage

Master Control stores the tempo associated with each of the 128 programs.

Holding down the first press of the TAP Button for more than 2.5 seconds causes Master Control to

save the current tempo at the selected Program location. Once the TAP Button has been held long

enough, the Display shows the letter “P”. Release the button to store the program.

At the time the tempo is stored, Master Control simultaneously sends a command to all

compatible Molten Voltage devices connected to the MIDI OUT, causing them to self-program

and store their settings for the selected Program.

The selected Program is the one that is shown by the Display. If the Program number is flashing,

the selected Program is not the same as the one that is currently running.

As such, the current Program can be copied into a new Program location by selecting a

different program number but not engaging that Program (normally done by pressing the START Button).

Instead, hold down the TAP Button until the letter “P” appears. The current settings will be saved to the

selected Program when the button is released.

If the DOWN Button is pressed while the TAP Button is being held (and after the letter “P”

appears), the decimal point after the “P” will turn on. This indicates that Master Control will not save the

current tempo, but instead will set the tempo status to "oLd", meaning that Program will use the then-

current tempo when it is recalled.

Following a SAVE, the saved Program becomes the current Program and Program Change data is

sent.

Note: If you tap in a new tempo, you need to wait until you are done tapping and Tap Mode ends

(about 2.5 seconds after the last tap) before you can store the new tempo.

Note: MIDI Clock output will stop while Molten Voltage self-program data is sent. As such, it will

usually be necessary to restart drum machines, sequencers, etc. after storing a tempo.

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.5

v 1.09

DOWN Button (D)

Pressing and releasing the DOWN Button will decrease the Program number by one. Pressing and

holding the DOWN Button will quickly decrease the Program numbers.

If the TAP Button has been pressed and released, pressing the DOWN Button will decrease the

tempo by one bpm. Pressing and holding the DOWN Button will quickly decrease the tempo.

Once the DOWN Button has been pressed, subsequent Taps will not affect the tempo until the 2.5

second tempo change time-out occurs, however the UP Button and SELECT Knob can still be used to

change the tempo.

UP Button (E)

Pressing and releasing the UP Button will increase the Program number by one. Pressing and

holding the UP Button will quickly increase the Program numbers.

If the TAP Button has been pressed and released, pressing the UP Button will increase the tempo

by one bpm. Pressing and holding the UP Button will quickly increase the tempo.

Once the UP Button has been pressed, subsequent Taps will not affect the tempo until the 2.5

second tempo change time-out occurs, however the DOWN Button and SELECT Knob can still be used to

change the tempo.

MIDI OUT Jack (J)

Connect Master Control to your MIDI device that will receive MIDI data by plugging a standard 5-

pin DIN MIDI cable into the MIDI OUT jack.

For best results, keep the MIDI output cable length under

fifteen (15) feet. If you need more distance, use a MIDI

repeater such as MIDI SPLITTY

The MIDI OUT Jack sends MIDI data as well as Molten Voltage self-programming messages.

SELECT Knob (H)

Turning the SELECT Knob will cause the program number to increase or decrease.

When a new program number has been selected, the Display will flash until the START Button has

been pressed and the selected program is engaged.

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.6

v 1.09

If the TAP Button has been pressed and released, turning the SELECT Knob will increase or

decrease the tempo up to the 24-240 bpm limits. Pressing and holding the UP or DOWN Button will

quickly increase or decrease the tempo.

Once the SELECT Knob has been turned after a Tap, subsequent Taps will not affect the tempo,

however the UP and DOWN Buttons can still be used to change the tempo.

CLOCK LED (A)

When the CLOCK LED is illuminated, MIDI Clock data is being sent over the MIDI OUT Jack. The

CLOCK LED is toggled when the START Button is pressed unless a Program is running and a new Program

number has been selected, as described above.

TEMPO LED (G)

The TEMPO LED always flashes in time with the current tempo at quarter-note intervals. The

tempo corresponds to the standard quarter note interval of 24 MIDI Clocks.

Note: MIDI Clock data is not being sent unless the CLOCK LED is illuminated.

Display (C)

The Display provides a variety of information. On startup, the Display shows the version

information, flashes Program 1 and shows its tempo, then indicates Program 1.

Program number

The Display shows Program numbers as follows:

Programs 1-99 appear as P. 1 through P.99

Programs 100-128 appear as u.00 through u.28. “u” means “upper”.

Program 27 Program 128

Programs are selected with the UP and DOWN Buttons and the SELECT Knob, as described above.

If the Display is flashing a program number, a new Program has been selected but not engaged.

Once the new Program is engaged by pressing the START Button, the Display will stop flashing.

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.7

v 1.09

Tempo information

If a Program has a fixed tempo associated with it, the far right decimal point (after the last

character) will be off. If a Program uses the “oLd” tempo from the previous Program, then the far right

decimal point will be on.

When the TAP Button is pressed (for less than 2.5 seconds), the current tempo will be displayed.

The tempo can then be changed by tapping again, pressing the UP or DOWN Buttons, or turning the

SELECT Knob.

Programming information

If the TAP Button is pressed and held for 2.5 seconds, the display will show the letter “P” to

indicate that upon release of the button, the selected Program will be stored.

If the DOWN Button is pressed while the TAP Button is being held, the decimal after the “P” will

turn on, indicating that program will use the “oLd” tempo from the previous Program, rather than the

current tempo.

MIDI Compatibility

The primary MIDI channel for the Molten Voltage system is MIDI Channel 15. All MIDI Program

Change messages are sent exclusively on that channel.

Molten Voltage devices all read MIDI messages on Channel 15 by default.

Set any other devices to receive MIDI Program Change messages on Channel 15.

Changing MIDI Channel

Although changing the MIDI Output Channel is not recommended because Molten Voltage devices

read MIDI messages primarily on Channel 15, it is possible to change the Master Control MIDI Output

Channel as follows:

1) Hold down the DOWN Button as you power the unit on. The unit will display a lowercase “c”

with a period after it follow by the current MIDI Channel. (e.g. c.15)

2) Release the DOWN Button.

3) Repeatedly press the UP Button to cycle through the 16 possible MIDI channels (the cycle

will start over at zero after Channel 16 is reached)

4) Once the desired MIDI Channel is reached, press and release the DOWN Button again. The

unit will re-start with the new MIDI Channel stored in memory.

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.8

v 1.09

Active and Passive Program Select Modes (version 1.08 and later)

MV-58 version 1.08 and higher has two modes for selecting programs, Active and Passive.

In Passive Mode, pressing the Up or Down buttons selects a pending program, indicated by the flashing

program number. The program is not sent until the Start button is pressed.

Passive Mode is the default, and the way that all earlier versions operate.

In Active Mode, each time the Up or Down button is pressed, the corresponding MIDI Program Change is

sent instantly. This is true whether MIDI Clock is being sent or not.

The current mode is indicated by the decimal point in the displayed program number. The decimal point

flashes while in Passive Mode, and stays lit all the time in Active Mode.

You can select which mode will be used on startup by holding down the Down button while powering

on Master Control. The MIDI Channel number will be displayed first. Press the Start button twice, until

the display reads Pnd. or Act. Switch modes by pressing the Up button. Lock in your selection by

pressing the Down button.

Switch between the two modes during runtime by pressing both the Up and Down buttons at the same

time.

Version 1.08 always allows switching modes during runtime.

Version 1.09 allows you to turn this feature on and off by holding down the Down button while powering

on Master Control. The MIDI Channel number will be displayed first. Press the Start button until the

display reads rt.Y (real-time Yes) or rt.n (real-time No). Switch modes by pressing the Up button. Lock in

your selection by pressing the Down button. v 1.09 default is to have this feature off.

SIMI SysEx Compatibility (version 1.08 and later)

When selecting pending programs in Passive Mode, Master Control version 1.08 and later will send out

SysEx data allowing SIMI to flash the pending program name.

The default is for this feature to be active.

To turn this feature off, hold down the Down button while powering on Master Control. The MIDI Channel

number will be displayed first. Press the Start button until the display reads Sd.Y (send Yes) or Sd.n

(send No). Switch modes by pressing the Up button. Lock in your selection by pressing the Down button.

Factory Preset Values

Programs 1-64 are 120 bpm

Programs 65-128 are "oLd"

MIDI Channel 15

Molten Voltage™

Master Control MV-58

Owner’s Manual - p.9

v 1.09

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