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1 Safety Notes<br />
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•<br />
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•<br />
This appliance is only suitable to transmit audio signals of<br />
up to 42 V/1 A.<br />
Protect the unit against humidity and heat (permissible<br />
operating temperature range 0-40°C).<br />
For the cleaning only use a dry cloth for dust removing, by<br />
no means chemicals or water.<br />
If the unit is used for purposes other than originally intended,<br />
if it is connected in the wrong way or not repaired by<br />
authorized personnel, no liability can be taken over for possible<br />
damage.<br />
2 Applications<br />
Patch boxes are always used where extensive connections<br />
between audio units are necessary. Model <strong>MPB</strong>-<strong>48L</strong> has<br />
especially been developed for stage applications and model<br />
<strong>MPB</strong>-<strong>48S</strong> for the studio technique. Examples of application:<br />
1. Inserting of one effect unit each into the 24 signal ways<br />
(mono, unbalanced)<br />
2. Combining and routing of 48 inputs resp. outputs (stereo,<br />
unbalanced or mono, balanced resp. unbalanced)<br />
3. Splitting of 24 signals (mono, unbalanced) to two outputs<br />
(only possible with model <strong>MPB</strong>-<strong>48L</strong>)<br />
3 Inserting of effect units<br />
At first establish the signal way (mono, unbalanced) without<br />
the effect unit:<br />
1) Connect the output of the signal source (e. g. mixer) to the<br />
upper rear jack A of one channel.<br />
2) Connect the lower rear jack B of the same channel with the<br />
input of the following unit (e. g. amplifier). Thus the signal<br />
way is established.<br />
GB<br />
7
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