Xantech FOUR CHANNEL HI-POWER AMPLIFIER, PA4100X GENERAL INFORMATION

Model PA4100X Page 3

GENERAL INFORMATION

To enhance the ease of installation and obtai n optimum performance f rom the PA4100X, we recommend that you first

become familiar with all its features and special capabilities by studying the descriptions and instructions in this

manual.

The PA4100X was designed to meet the audio power amplifier needs of custom installed multi-zoned systems with

high sonic quality and hi power output. It is a 4 Channel am plifier that is primari ly intended to interface with the

MRC88 Whole-house Audio Video Entertainment System for Zones 7 and 8 Preamp outputs or for Sub-Zone

amplification of zones 1-6. It may also be used as a standalone 2-zone amplif ier. Specific features and tec hnology are

as follows:

Figure 1: The Model PA4100X Amplifier

Cost/Size Efficiency. The PA4100X f eatures four 100-watt power amplifiers. Thi s permits each PA4100X to drive 2-

zones in a multi-zone system -- each with a 100-watt stereo am plifier per zone.

Remote ON/OFF Control Jacks (C1 & C2). These 3.5m m Stereo Mini Jacks allow the PA4100X to be powered on

and off and muted by a positive DC v oltage ranging between 5 and 30 volts (11mA @ 12 V). Specifically, when

interfaced with the Control Out jack s of zones 7 & 8 on the MRC88 (labeled CO1 and CO2), it permit s the MRC88 to

power the PA4100X ON and OFF automatically with z one ON/OFF commands or any 12VDC control signal.

Input Level Flexibility. The input level (sensiti vity range) is individual ly adjustable (per stereo pair) from a low of 0.2

volts up to 3 volts. This gives the installer the ability to adjust the overall gain of the system or zone. For instance,

there may be a need to adjust the amplifi er to deliver a controlled, m aximum sound level i nto a zone when the volume

control on the preamp is set to maxim um. This would act as a volume lim iter for any particular zone (i.e. t o prevent

the kids from over-driv ing wall speakers, etc.).

Low Impedance Capability. Each amplifier is 4-Ohm safe under music conditi ons. This means, for instance, that

you can drive two pairs of 8-Ohm speakers in stereo m ode in each zone with ease.

Peak/Clip LED Indication: W henever either amplifi er channel output starts to enter a clipping state, the c hannels

front panel LED will illuminate RED. After the amp stops clipping the LED will return to its normal state 5-6 seconds

after clipping stops.