GAI-Tronics PMA-300 Handmatig - Pagina 8

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Model PMA-300 300 Watt Central Amplifier

Pub.: 42004-667L2A

Ventilation

The amplifier creates heat during operation. Although the amount of heat generated varies depending on

various factors, the unit should be positioned to allow for natural convection air flow to prevent excessive

temperature rise.

If additional amplifiers or other heat producing equipment is installed within the enclosure rack, ensure

that the ambient temperature near the amplifiers does not exceed ~50ºC during normal operation by

installing adequate rack ventilation fans.

Note: If, during normal operation, the ambient temperature exceeds ~50ºC inside the equipment rack,

increase the spacing distance between the amplifiers and equipment and install suitable equipment rack

fans to reduce cabinet's ambient to below ~ 50ºC.

Audio Line Input Connection

The LINE IN connection is designed to mate with a 3-pin male, XLR-style connector. It can be

connected into either of the two parallel XLR receptacles located on the rear of the amp. Connect the

audio (+) to pin 2 and audio (-) to pin 3 of XLR plug.

The second XLR receptacle can be used to connect the line-in audio signal to additional amplifiers in

parallel, if needed. Connect the audio (+) to pin 2 of each amp and audio (-) to pin 3 of each amp.

Minimum recommended wire gauge is 18 AWG. See Figure 6 below.

Figure 6. LINE IN Connection

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