Lexicon MPX G2 manual Insert Send, Insert Returns Automatic Signal Routing

MPX G2 User Guide	Lexicon
Insert Send	The MPX G2 Insert Send is always active. When Gain is on, its signal is from the
	Gain block output. When Gain is bypassed, or when no Gain effect is in the
	program, its signal is from the Gain block input. Note that this signal passes
	through a programmable level control (Edit mode: Mix: Send Level) and analog
	noise gate before leaving the unit via the Insert Send jack. Note also that
	whenever there are no active effects between the guitar input and the Insert
	Send, a relay automatically switches in a “straight-wire” bypass path. This
	ensures that there is nothing between your guitar and your amp unless one or
	more pre-gain effects are active. (Until the MPX G2, the only way to get this same
	kind of analog purity when using effects was to install a dedicated effects loop
	switching unit.)

Insert Returns

Automatic

Insert Return

Signal Routing

Right (Mono) Only

Stereo

Left Only

Inserting a jack into either (or both) Insert Return connectors breaks the normalled connections between pre-gain and post-gain paths, allowing you to insert an external device (guitar preamp, effects processor, etc.) into the MPX G2 signal path. When an external device is inserted, the front panel Insert button LED will light.

The external device can be bypassed by pressing Insert (its LED will go out). When the MPX G2 is connected to an amp’s effects loop, you can use the Insert button to bypass the amp’s preamp and send MPX G2 signals directly into the amp’s power amp. This feature allows you, for example, to switch between your amp’s high-gain channel and an MPX G2 Gain effect clean channel.

The Insert Return jacks have software-controlled sensing and switching circuitry to automatically route signals depending on which jacks are used and the MPX G2 bypass state.

When only the Right Insert Return is connected, its signal is split and sent into both the left and right channels of the post-gain path. When the unit is bypassed, the dry Insert signal will be present at both outputs.

When both Left and Right Insert Returns are connected, their signals are sent in stereo to the left and right channels of the post-gain path. When the unit is bypassed, the dry stereo signal is present at the outputs.

When only the Left Insert Return is connected, its signal is sent only to the left channel of the post-gain path. The right channel of the post gain path is “normalled” to the right channel of the pre gain path. When the unit is bypassed, the dry Insert signal is present on the left output and the Guitar Input signal is present on the right output.

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