
Thank you for purchasing the MIDI Solutions MultiVoltage Thru.
The MIDI Solutions MultiVoltage Thru provides two MIDI Thru outputs from one MIDI input, allowing additional MIDI outputs to
be added at any point in the MIDI chain. Active circuitry cleans up any skewing of the data bits that has occurred at the input,
resulting in accurate output signals. The MIDI Solutions MultiVoltage Thru is MIDI-powered and requires no batteries or power
supply to operate. It is compatible with products that follow both the 5V and 3.3V MIDI specifications.
INTRODUCTION
3
MIDI Solutions
TM
MultiVoltage Made in Canada
MIDI
In Thru
Thru1
Thru2
Receiving Device #1
MIDI In
Receiving Device #2
MIDI In
Sending Device
MIDI Out or Thru
MIDI Indicator LED
Connect the MIDI Out or Thru of the sending MIDI device to the MIDI of the Thru. Connect and
of the Thru to the MIDI Ins of the receiving MIDI devices. The number of MIDI Solutions products that
can be chained together is dependent on the specifications of the MIDI output port supplying power – for more information
see the MIDI INDICATOR LED section. Since some products make use of unused pins 1 and 3 to pass phantom power,
connections to these pins are provided between the MIDI and jacks. These pins are not connected to the
Thru's internal circuitry. It is recommended that the current passing though these pins be limited to 1 amp.
All MIDI messages appearing at the Thru's MIDI input are sent to its MIDI Thru outputs and .
The MIDI Indicator LED will light as soon as the sending device is turned on, and flashes briefly whenever MIDI data passes
through the unit. If the Thru's operating voltage drops below the threshold at which it is able to provide a MIDI
standard drive current of 5 mA, its LED will produce a steady on/off warning flash. After rising above this threshold the LED
will continue to produce a steady on/dim flash for 10 seconds. Since the voltage always rises above this threshold on power
up, a steady on/dim flash will always be visible for 10 seconds; during this time the unit is operating normally and providing
the standard drive current. If the Thru's operating voltage is below 4V its LED will produce a dim flash every
four seconds, this signal is for diagnostic purposes and does not affect its operation.
In Thru1
Thru2
In Thru1
Thru1 Thru2
MIDI Solutions
MIDI Solutions
MIDI
Solutions
MIDI Solutions
MIDI Solutions
MIDI Solutions
CONNECTIONS
OPERATION
MIDI INDICATOR LED