Behringer V-Tone GMX1200H Owner's Manual

V-TONE GMX1200H/GMX212/GMX210/GMX112/GMX110 User Manual

If you want to use another guitar preamp, or a modeling amp (e. g. the V-AMP 2 

or the V-AMP PRO), connect it to the SLAVE IN connectors (except for the GMX110 

and GMX112). The V-TONE now operates only as a power amp, with its preamp 

section inactive.

MIDI Out

BEHRINGER

V-TONE GMX212

MIDI In

Electric Guitar

FCB1010

Input

Loudspeaker

Output Left

Loudspeaker

Output Right

Line Out

Sound

Reinforcement

System

BEHRINGER

ULTRASTACK BG412V

Fig. 3.3: Setup with a MIDI foot controller and an external loudspeaker

In this illustration, we’ve omitted the headphones and the additional equipment 

from figure 3.1; this illustration serves as an expansion of the standard setup.
You can use the MIDI foot controller to control channel and effects changes, 

volume, Wah and so on. (Additional information about MIDI can be found in 

section 4.3). The LINE OUT signal with the speaker simulation can be fed into 

your mixer or your P.A. system’s stagebox.
External guitar loudspeakers can be connected to the loud-speaker outputs of the 

GMX212 in order to get more punch and higher volume on the stage. You can do 

this in two ways: use two separate loudspeakers for stereo applications, or use a 

single stereo box (e.g. the BEHRINGER ULTRASTACK BG412V).
Instead of loudspeaker outputs, the GMX110 and GMX112  feature single 

SPEAKER OUT connectors (

(32)

) used for connecting an external loudspeaker.

The GMX1200H head features two LOUDSPEAKER outputs (EXT LEFT and 

EXT RIGHT) that can be used to connect one or two external loudspeakers. 

To get the most power from the GMX1200H, both loudspeaker outputs should 

be used and connected to speakers with minimum 8 Ohms impedance. 

Loudspeaker outputs are automatically muted as soon as you activate the tuner 

or connect a set of headphones (see section 5.1). To assure optimal and safe use 

of your amplifier, please also read section 6.2.
When the GMX1200H is used with a single BEHRINGER ULTRASTACK BG412V, 

the rear panel switch of the BG412V must be in the stereo position and the two 

outputs should be connected as shown in fig. 3.4.
When using two speaker cabinets to form a classic full-stack please make sure the 

impedance of each speaker cabinet is between 8 to 16 Ohms (see fig. 3.5).

Loudspeaker 

Output Right

BEHRINGER V-TONE GMX1200H

BEHRINGER ULTRASTACK BG412V

Rear panel

Loudspeaker 

Output Left

Fig. 3.4: GMX1200H with an ULTRASTACK BG412V in stereo mode