Xantech PA4100X User Manual
INSTALLATION INSTRUCTIONS
MODEL PA4100X
FOUR CHANNEL HI-POWER AMPLIFIER
TABLE OF CONTENTS
SectionTitle
SAFETY INSTRUCTIONS - READ BEFORE OPERATING EQUIPMENT.........................................................................................................2
GENERAL INFORMATION .............................................................................................................................................................................3
PA4100X PANEL AND FEATURE DESCRIPTIONS ........................................................................................................................................5
INSTALLATION - PHYSICAL LOCATION AND MOUNTING ............................................................................................................................8
CONNECTING THE PA4100X.........................................................................................................................................................................9
Stereo Mode Connections ...................................................................................................................................... 9
Speaker Phasing .................................................................................................................................................. 10
Connecting the REMOTE MASTER ON/OFF MUTE CONTROL........................................................................... 10
A Multi-Zone System Diagram Using The PA4100X and MRC88 .......................................................................... 12
TROUBLE SHOOTING .................................................................................................................................................................................13
SPECIFICATIONS ........................................................................................................................................................................................14
Page
Page 2 Model PA4100X
SAFETY INSTRUCTIONS - READ BEFORE OPERATING EQUIPMENT
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
WARNING: TO MINIMIZE THE CHANCE OF ELECTRICAL SHOCK,
DO NOT OPERATE THIS PRODUCT WITHOUT HAVING SPEAKER
CONNECTORS PLUGGED-IN
The lightning flash with arrowhead symbol, within an equilateral triangle,
is intended to alert the user to the presence of un-insulated “dangerous
voltage” within the product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
This product was designed and manufactured to meet strict quality and safety standards. There are, however, some
installation and operation precautions, which you should be particularly aware of.
1. Read Instructions – All the safety and operating ins tr uc tions should be read bef ore the appliance is operated.
2. Retain Instructions – The safet y and operating instruc tions should be retained f or future ref erence.
3. Heed Warnings – All warnings on the appliance and in the operating instructions should be adhered to.
4. Follow Instructions – All operating and use instructions should be followed.
5. Water and Moisture – The appliance should not be used near water – for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a
wet bas ement, or near a swimming pool, etc .
6. Carts and Stands – The appliance should be used only with a cart or stand that is recommended by the manufacturer. An appliance and cart
combination should be moved wit h c are. Quick stops, exces sive forc e, and uneven surfac es may cause the applianc e and car t c ombination
to overturn.
7. Wall or Ceiling Mounting – The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
8. Ventilation – The appliance s hould be situat ed s o that its location or position does not interfere with its pr oper ventilation. For example, the
applianc e should not be situated on a bed, s ofa, rug, or similar surf ace that may block the ventilation openings; or, placed in a built-in
installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.
9. Heat – The appliance s hould be situated away from heat sourc es such as radiators , heat registers, stoves, or other appliances (inc luding
amplifiers) that produc e heat.
10. Power Sources – The appliance should be connected to a power supply only of the type described in the operating instructions or as marked
on the applianc e.
11. Grounding or Polarization – Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.
12. Power-Cord Protection – Power- supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon
or against them, paying par ticular attention to c ords at plugs , c onvenience receptacles, and the point where they exit from the appliance.
13. Cleaning – T he applianc e should be c leaned only as recommended by the manuf actur er.
14. Power Lines – An out door antenna should be located away fr om the power lines.
15. Nonuse Periods – The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
16. Object and Liquid Entry – Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
17. Damage Requiring Service – The appliance should be serviced by qualified service personnel when:
A. The Power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has spilled into the appliance; or
C. T he applianc e has been exposed to rain; or
D. T he applianc e does not appear to operate normally or exhibits a marked change in perf ormance; or
E. The appliance has been dropped, or the enclosure damaged.
18. Servicing – The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing
should be referred to qualified service personnel.
© 2003 Xantech Corporation
Model PA4100X Page 3
GENERAL INFORMATION
To enhance the ease of installation and obtain optimum performance from 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 amplifier that is primarily 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 amplifier. Specific features and technology are
as follows:
Figure 1: The Model PA4100X Amplifier
Cost/Size Efficiency. The PA4100X features four 100-watt power amplifiers. This permits each PA4100X to drive 2-
zones in a multi-zone system -- each with a 100-watt stereo amplifier per zone.
Remote ON/OFF Control Jacks (C1 & C2). These 3.5mm Stereo Mini Jacks allow the PA4100X to be powered on
and off and muted by a positive DC voltage ranging between 5 and 30 volts (11mA @ 12 V). Specifically, when
interfaced with the Control Out jacks of zones 7 & 8 on the MRC88 (labeled CO1 and CO2), it permits the MRC88 to
power the PA4100X ON and OFF automatically with zone ON/OFF commands or any 12VDC control signal.
Input Level Flexibility. The input level (sensitivity range) is individually 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 amplifier to deliver a controlled, maximum sound lev el into a zone when the volume
control on the preamp is set to maximum. This would act as a volume limiter for any particular zone (i.e. to prevent
the kids from over-driving wall speakers, etc.).
Low Impedance Capability. Each amplifier is 4-Ohm safe under music conditions. This means, for instance, that
you can drive two pairs of 8-Ohm speakers in stereo mode in each zone with ease.
Peak/Clip LED Indication: Whenever either amplifier channel output starts to enter a clipping state, the channels
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.
© 2003 Xantech Corporation
Page 4 Model PA4100X
Auto Protection Circuit. This feature protects the PA4100X if a short or very low impedance is detected at the
speaker terminals with each amplifier pair protected separately. Normal operation is restored automatically within 3 to
4 seconds after the short is removed.
© 2003 Xantech Corporation
Model PA4100X Page 5
PA4100X PANEL AND FEATURE DESCRIPTIONS
1. Front Panel. 17" X 5.25” panel designed for shelf mounting. The unit measures 6” high with the Feet (Item
#5). When rack mounting use an adequate rack shelf mount making sure to allow for proper ventilation.
3
2
1
5
FIGURE 2 – THE MODEL PA4100X FRONT PANEL – FEATURES AND FUNCTIONS
4
2. POWER ON/OFF/STANDBY SWITCH:
POWER ON/OFF MODE: When the CI switch on the rear of the unit is set to OFF the front Power Switch
will act as a standard ON/OFF (IN/OUT) control.
STANDBY MODE: With the POWER SW ITCH left in the IN position (and the CI switch set to ON) the 2
channels of PA4100X may be controlled remotely from the MRC88 via the CI1 and CI2 Control Inputs (or
any Voltage Control Signal). When both channels enter STANDBY Mode the front LEDS will turn off
leaving the amplifier in a low current sleep mode.
3. Status LED Indicators. These indicators, one for each channel pair, provide the following status information:
GREEN LED: Indicates Amplifier is ON
RED LED: Indicates associated channel output is in a CLIPPING state. LED will go back to GREEN 5-6
seconds after clipping subsides.
ALL LED’s OFF: Indicates both amplifier channels are OFF or in STANBY MODE (see Item #4 for
STANDBY MODE)
4. Illuminated LOGO: This is a backlit logo. When lit it indicates that the amplifier is powered ON. If the
individual STATUS LED’s (Item #3) are OFF but the LOGO is ON, this indicates that both amplifier channels
© 2003 Xantech Corporation
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