BRAX MATRIX X2 Bedienungsanleitung Seite 21

10 Impedance selection
The output power of the amplifier BRAX Matrix X2 is independent from impedance. By using the impedance selector (13)
the impedance of the connected loudspeaker system (4 Ohms, 2 Ohms or 1 Ohm) has to be selected. If several loudspea-
kers are connected to one channel, the impedance can be approximately calculated as follows:
series connection:
parallel connection:
Please note: A special case of calculating the impedance is the bridged mode, i.e. the operation of the channels A/B in
the mode stereo bridged or mono bridged. In this case the total impedance has to be divided by two once more. Please
note that the total impedance is not lower than 1 Ohm per channel. If the connected loudspeaker impedance is below the
selected impedance, the amplifier turns into protection mode.
Example 1: Two 4 Ohms loudspeakers are connected parallely to the channels A and B in the bridged mono mode.
Impedance Lsp. A and Lsp. B
Thus, for channels A/B you have to select an impedance of 1 Ohm.
Example 2: Two 4 Ohms loudspeakers are connected to the channels A and B in the stereo mode.
Impedance Lsp. A and Lsp. B
Thus, for channels A/B you have to select an impedance of 2 Ohms.
11 Level controls for input sensitivity
These controls can be used to match the input sensitivity of the individual channels to the output voltage of the connected
head unit. These controls are no volume controls and are solely intended for the purpose of sensitivity trimming. The con-
trol range extends from 600 mV to 8,0 V.
12 Signal inputs
The amplifier has RCA connectors for RCA cables that can be connected with the pre-amplifier output of the line outputs of
the headunit or with a pre-amplifier. The connectors are gold-plated to ensure a better signal transmission.
13 Balanced signal inputs
The amplifier BRAX Matrix X2 has two balanced signal inputs which account for the elimination of distortions on the signal
path.
Z = Z x n (n= amount of loudspeakers; Z= loudspeaker impedance)
tota
l
Z = Z / n
tota
l
= (4 Ohms / 2) / 2 = 1 Ohm
= 4 Ohms / 2 = 2 Ohms
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