This MIDI Thru box has eight Thru outputs. They are arranged as two banks of four. The sockets for one output bank are on the left hand side of the box. The sockets for the other output bank are on the right hand side.
The V8 has two MIDI input ports, marked 'A' and 'B'. The socket for input A is on the left of the box, and that for input B is on the right.
There is an INPUT SELECT slide switch for each of the output banks.
Each switch has three positions. In the position marked 'A', the MIDI signal received at MIDI IN A is routed to the relevant bank of four Thru outputs. In the position marked '0', no MIDI signal is routed to the corresponding bank of outputs. In the position marked 'B', the MIDI signal received at input B is routed to the relevant output bank.
It is, of course, possible to have all eight MIDI outputs of the V8 MIDI Thru Unit driven from the same input signal — that is, you may select input A (or B) for both output banks.
There are two flashing lamps that indicate when MIDI data is being received at each of the MIDI inputs. The lamp signal is pulse stretched so that even sparse MIDI data is readily perceived. A POWER lamp is also provided, which indicates when the V8 MIDI Thru Unit is connected to a suitable DC power supply.
External power required
The V8 MIDI Thru Unit does not incorporate its own power supply, so it requires to be connected to an external DC power source. An ordinary mains (ac power) adaptor (regulated or unregulated) of between nine and twelve volts will do fine. The current requirement is just 30mA. In the UK and Eire, a mains (ac power) adaptor is supplied with the unit.
Power connection is made via a 3.5mm jack socket, with the tip positive. The DC power is regulated within the V8. Protection against reverse connection is incorporated.
The dimensions of the V8 MIDI Thru Unit are 109mm x 109mm x 40mm.
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