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PA635
User Manual
20 pgs909.13 Kb0

Xantech PA635 User Manual

INSTALLATION INSTRUCTIONS
MODEL PA635
SIX CHANNEL POWER AMPLIFIER WITH IR CONTROL
TABLE OF CONTENTS
Section Title
PA635 PANEL AND FEATURE DESCRIPTIONS................................................................................................. 3
Factory Default Settings, Item #9............................................................................................................ 5
INSTALLATION
RC68+ (or RC68) PROGRAMMER / REMOTE CONTROL ..................................................................... 6
PHYSICAL LOCATION AND MOUNTING .............................................................................................. 9
CONNECTING THE PA635 .............................................................................................................................. 10
Stereo Mode Connections ..................................................................................................................... 10
Speaker Phasing................................................................................................................................... 11
Bridged Mode Connections ................................................................................................................... 11
Typical Applications............................................................................................................................... 12
A Basic Common IR Bus System - Dedicated Keypads and Remotes.................................................... 12
A Basic Dedicated IR System - Non Dedicated Keypads and Remotes.................................................. 14
Connecting the REMOTE MASTER ON/OFF CONTROL Terminals ...................................................... 16
A Multi-Zone Power Managed System, using a ZPR68-10, a GATEKEEP-IR™ and a PA635 ............... 16
SPECIFICATIONS............................................................................................................................................. 19
Page
Page 2 Model PA635
GENERAL INFORMATION
To enhance the ease of installation and obtain optimum performance from the PA635, we recommend that you first become familiar with all its features and special capabilities by studying the descriptions and instructions in this manual.
The PA635 was designed to meet the audio power amplifier needs of custom installed multi-room, multi-zoned systems with high sonic quality. Common and Local IR control of Volume, Mute, Balance and OFF, for each channel pair, is provided. Its bridgeable 6-5-4-3 multi-channel capability permits a wide variety of uses, such as enough channels to run surround sound home theater or multi-room applications. Specific features and technology are as follows:
3
PA635
SIX CHANNEL AMPLIFIER
POWER
1
2
Figure 1 – The Model PA635
Cost/Size Efficiency. The PA635 features 6 conservatively rated 35-watt power amplifiers. This permits each
PA635 to driv e 3-zones in a multi-zone system, each with a 35 watts/channel stereo amplifier per zone. The rack mountable low profile design, using a large single multiple filtered power supply, delivers high quality at a reasonable price.
IR Controlled Volume Level. Volume can be ramped from zero output to maximum for individual channel pairs, or, as group through the Common Bus inputs, using IR volume control commands from an RC68+ (or RC68). The maximum input sensitivity at full volume is 0. 5 volts for rated output (35 Watts/channel).
Local or Common Bus. Each stereo pair can be fed audio individually via their LOCAL inputs from differing zones or sources. In addition, a single source can be fed, via the COMMON Bus, to some or all stereo pairs as desired. This flexibility permits the installer to drive as many as three rooms in stereo as a single zone system, or three rooms in stereo as a three-zone system --- or divide them up for a combination of both.
Volume Setting Capabilities. The installer has the option of using the volume control of the PA635 as the sole volume control for a zone or the system, or to adjust the PA635 volume to a desired fixed level and use the volume action of a connected preamp instead.
Max-V Setting. This allows the amplifier to be set to deliver a controlled maximum sound level into a zone when the volume is ramped to maximum. This acts as a volume limiter for the system (e.g. to prevent the kids from over-driving wall speakers, etc.).
Output Flexibility (6-5-4-3). Each of the six amplifiers can be driven singly or bridged to allow several channel and power output capabilities. It can be configured into seven power packages as follows: Six 35-watt amplifiers - 6 total. One 150 and four 35-watt amplifiers - 5 total. Two 150 and two 35-watt amplifiers - 4 total. Three 150-watt amplifiers - 3 total. This gives the PA635 great flexibility for use in many applications, such as driving surround sound speaker systems, in addition to multi-room.
© 2001 Xantech Corporation.
Model PA635 Page 3
Individual ON/OFF of Amp Pairs. Permits Standby ON/OFF control of individual channel pairs. Specifically, it permits the STATUS outputs (12 Volts On/Off) of Xantech ZPR68 zones to switch the Standby of the PA635 channel pairs (CI) On and OFF with zone ON and OFF commands.
Remote Master ON/OFF. Allows the entire PA635 to be powered ON and OFF by a positive DC voltage ranging between 5 and 30 volts (16mA @ 12V). Specifically, it permits the 12 Volt common CO (Control Output) on the Xantech ZPR68 to power one or more PA635's ON and OFF automatically with first zone ON and last zone OFF commands.
CAUTION: W hen powering up multiple PA635’s, a delay of 2 or more seconds should be incorporated between “power on” using multiple Xantech AC2’s.
Default settings. As received from the factory, Volume level is set to 1 Volt for 3 Watts output, Balance is centered and Mute is OFF, for all channels. Also, pressing the LEVEL (System) RESET switch 2 times within 1 second restores all factory defaults. The PA635 will always return to last set values (volume, etc.) after main power shut down or after any power interruptions.
Low Impedance Capability. Each amplifier is 4-Ohm safe under music conditions in stereo mode and 8-Ohm safe when bridged. This means, for instance, that you can drive two pairs of 8-Ohm speakers in stereo mode in each zone with ease and safety.
Auto Protection Circuit. Protects the PA635 if a short or very low impedance is detected at the speaker terminals or excessive temperatures are reached. Each amplifier pair is protected separately. Normal operation is restored automatically when the short is removed or when temperatures drop sufficiently.
PA635 PANEL AND FEATURE DESCRIPTIONS (refer to Figure 2)
2
1
2
3
3
PA635
SIX CHANNEL AMPLIFIER
POWER
2
1
1
3
2
4
Figure 2 – PA635 Front Panel – Features and Functions
1. Front Panel. 19" x 3 ½" panel designed for mounting into a standard 19" Rack Panel.
2. Rack Panel Handles.
3. POWER Switch. When pressed to the IN position, power is applied to the PA635 [provided the rear panel master AC LINE ON/OFF Switch, item 17, is placed in the ON (I) position]. This is the MANUAL ON position. When pressed again, it releases to the OUT position (MANUAL OFF), turning the unit OFF.
In addition, this switch must be left in the MANUAL OFF (OUT) position to permit an external DC Control Voltage to power the PA635 ON and OFF. Refer to "REMOTE MASTER ON/OFF CONTROL" terminals, item #13.
© 2001 Xantech Corporation
Page 4 Model PA635
NOTE: The PA635 may also be powered ON/OFF with an external AC line switch into which the power cord
of the PA635 is plugged (such as the switched AC outlet of a preamp, timer, etc. with a 10A rating). For this type of operation, leave the POWER switch depressed to the MANUAL ON position.
4. Status LED Indicators. These indicators, one for each channel pair, provide the following status information:
a) They show Power ON/OFF and Standby ON/OFF conditions.
b) They flash Amber 5 times during power up, then turn steady Green when Power On Mute releases. This
action occurs whether the unit is powered ON and OFF by the POWER switch (item # 3) or by a DC voltage applied to the REMOTE MASTER ON/OFF CONTROL terminals (item #13). Be sure the rear panel master AC LINE ON/OFF Switch, item #17, is set to the ON (I) position for the above to occur.
c) They will go off when the Standby OFF IR command is received. Sending a MUTE OFF command will
restore operation. Also, each LED blinks with Volume action for that channel.
d) A Mute command will cause the channel LED to blink Green (Red if Volume is within 5 dB of Max-V).
Mute is released when any other PA635 command is sent.
e) Changing an IR Code Group will cause them to blink Amber, confirming the change has taken effect.
f) When the volume level is increased to a range within 5 dB of MAX-V, the LED color changes from Green
to Red. NOTE: Red indicates that volume gain setting is approaching maximum --- not an indication of power output level.
9
8
5
7
6 7
5
6 7
5
18
6
10
COMMON
AUDIO
BUS
LEFT RIGHT
REMOTE MASTER
ON/OFF
CONTROL
CI
+--
®
5-30 VOLTS DC
13
GROUND
1514
16
WARNING
TURN POWER OFF BEFORE
CHANGING
LEVEL
MODES
RESET
IR IN
STATUS
STEREO
BRIDGED
11
MODE
MONO
LEFT RIGHT
1
+ BRIDGED --
SPEAKER
LEFT RIGHT
12
CAUTION
RISK OF ELECTRIC
COMMON
SHOCK. DO NOT OPEN
LOCAL
GROUND
CI
STATUS
IR IN
+-- --+
STEREO
BRIDGED
11
MODE
MONO
LEFT RIGHT
2
+ BRIDGED --
SPEAKER
LEFT RIGHT
12
WARNING
TURN POWER OFF BEFORE
COMMON
CHANGING
MODES
LOCAL
GROUND
CI
STATUS
IR IN
+-- --+
STEREO
BRIDGED
11
MODE
MONO
LEFT RIGHT
3
+ BRIDGED --
SPEAKER
LEFT RIGHT
12
COMMON
LOCAL
GROUND
CI
+-- --+
FUSE
6.25 AMP
SLOW BLOW
AC 120V
60 HZ 2 AMP
STATUS
IR IN
AC LINE ON/OFF
17
Figure 3 – PA635 Rear Panel – Features and Functions
5. Line Inputs. These RCA-type jacks are the audio inputs for each of the amplifier pairs. Connect them to the OUTPUT jacks of the driving preamp with good quality RCA-type patch cables. Note that the inputs are marked LEFT-1-RIGHT, LEFT-2-RIGHT, etc., signifying the stereo channel pairs. Both the LEFT and RIGHT jacks are also active when the MODE switch (item #7) is set to the MONO or BRIDGED mode.
6. COMMON BUS / LOCAL Switch. Switches the amplifier stereo pair inputs between the LOCAL (LEFT/RIGHT) jacks, item #5 and the COMMON AUDIO BUS (LEFT/RIGHT) jacks, item #8. In this way, each amplifier pair can be driven by separate zones or sources or from a common source via the COMMON AUDIO BUS.
7. MODE Switch. Switches the amplifier pair between STEREO, MONO and BRIDGED modes.
© 2001 Xantech Corporation.
Model PA635 Page 5
In STEREO mode, the two amplifiers operate independently of each other for 35 Watts of output each, except
IR control of Volume, Max-V, Mute, Standby OFF/ON and Balance functions is common to both.
In MONO mode, left and right input signals are summed internally for Mono output from each of the two
amplifiers. Also, either the Left or Right (item #5) input may be used if the source is already a Mono signal.
In BRIDGED mode, the two amplifiers are bridged for a single channel of high power output (150 Watts @ 8
Ohms). Either the Left or Right input (item #5) may be used to drive the resultant single channel amplifier.
CAUTION: Be sure to have the POWER turned OFF when changing the position of this switch and when
making the corresponding speaker connection changes (see also item #12, following).
8. COMMON AUDIO BUS. A single audio source, such as from a connected preamp, can drive one or more of the amplifier pairs simultaneously, as desired, from this Bus. Any of the amplifier pairs can be switched to the COMMON AUDIO BUS at will by use of the COMMON BUS / LOCAL Switch (see also item #6).
9. LEVEL (System) RESET Button. Pressing this button 2 times within 1 second restores all factory default settings. The factory defaults for all channels are as follows:
• Input Level set to 1 Volt rms for 3 Watts output.
• Balance centered.
• Mute OFF.
• MAX-V Cleared.
• IR Code Group set to B0 (the PA1235 uses code group A0).
• CI (control in) disabled. Changes CI control to IR control of Standby ON/OFF. (CI enables when +5 to
+30 VDC is applied to CI for 2 or more seconds. See also item #11).
NOTE: The PA635 will always return to last set values (plus any unaltered factory defaults) after main power
shut down or after any power interruptions.
10. FUSE. When required, replace only with a fuse of the same type and rating:
• 120 V Version: 6.25 AMP 250 VAC, SLOW BLOW.
• 240 V Version: 3.15 A Time-Lag 250 VAC.
• Replacement with a fuse of higher rating will not protect the amplifier and will void the warranty.
11. IR IN, STATUS, GROUND and CI Terminals. Removable, 4-Terminal, screw type plug-in connector.
• IR IN = IR Signal. Receives IR Input from Xantech IR Receivers, Smart Pads, Connecting Blocks, etc.
• STATUS Out. Delivers a constant +12 VDC output (9V @ 70 mA) with ON condition. 0 Volts output =
OFF (Standby).
• GROUND. Ground for IR IN, STATUS out & CI in.
• CI = Control Input. Use for control of Standby ON/OFF of amplifier pairs, if desired, instead of by IR. After
CI is enabled (see item #9), 0 Volts input = OFF (Standby) condition and +5 to +30 VDC input = ON condition. (12V in draws 16 mA).
NOTE: All plug-in connectors accept wire sizes from 24 to 12 gauge.
12. SPEAKER Terminals. These plug-in 4-terminal screw type connectors permit speaker wire sizes up to 12 gauge. When making connections for the STEREO mode, be sure to observe the "+” and "–" polarity markings, just under the LEFT & RIGHT markings, for each wire pair going to the speakers.
CAUTION: When making connections for the BRIDGED mode, remember, only one speaker is being
attached per amplifier pair. Be sure to observe the outer "+” and "–" polarity markings on each side of the
© 2001 Xantech Corporation
Page 6 Model PA635
word "BRIDGED" on the panel above the 4-terminal connector when connecting the 2-conductor wire to the speaker.
13. REMOTE MASTER ON/OFF CONTROL. This 2-terminal connector allows the entire PA635 to be powered ON and OFF by a control v oltage ranging between 5 and 30 Volts DC (16mA @ 12 V). Be sure to observe the marked polarity. For instance, the 12 volt common CO (Control Output) of the Xantech ZPR68 preamp will power the PA635 ON and OFF automatically with the first zone ON and last zone OFF commands. The DC Voltage must be applied continuously to retain the ON condition and drop to less than 0.5 Volt to switch to the OFF condition.
NOTE: The front panel POWER switch (item #3) must be left in the Manual OFF (Out) position and the
Master AC Line Switch (item #17) set to ON (I) to permit the REMOTE MASTER ON/OFF CONTROL to operate. See also CAUTION notes, Fig. 9.
14. Rear Panel ON/OFF LED. This LED indicates the power ON/OFF condition of the entire PA635, whether activated by a REMOTE MASTER ON/OFF CONTROL voltage (item #13) or from the front panel POWER switch (item # 3).
15. Common IR IN and STATUS Connector. This 4-terminal connector provides the same type of IR control functions as that of the individual amplifier pairs (item #11) except they apply to all amplifier pairs in common. That is, IR commands for Volume, Mute, etc., control all amplifier pairs together.
NOTE: Individual control of amplifier pairs is possible, however, through the Common IR IN, provided the IR
Code Group is changed on amplifier pairs you wish to control separately. The STATUS output goes high and low with the AC Power ON/OFF state of the entire PA635. It does not respond to a Common IR OFF/ON (Standby) condition.
16. Grounding Screw. Provides a means for chassis connection to earth ground or to other A/V products to aid in the reduction of system noise, etc., where needed.
17. Master AC LINE ON/OFF Switch. Turns power OFF to the entire PA635, regardless of IR, Control IN, or front panel POWER switch conditions. Must be placed in the ON (I) position for the other power switching functions to work.
18. 3-Conductor AC Line Cord Receptacle. Standard IEC male receptacle for plug-in of a 3-conductor power line cord. Depending on the application, plug the line cord into a switched or un-switched 120V 60 Hz AC outlet (or 240 VAC 50 Hz on the 240 V version).
RC68+ (or RC68) Programmer / Remote Control
The RC68+ Programmer (available separately) contains all the commands necessary to operate the IR control functions of the PA635.
You will need it to program universal learning devices such as the Xantech URC-2 learning remote, Xantech SmartPads, 590-10 Programmable Controller, 710 Fone Link, etc., with commands that operate the PA635.
NOTE: The RC68+ codes operate many other Xantech models as well, such as the RGC11, CC12, ZPR68, etc. Therefore, only the button descriptions that apply to the operation of the PA635 are listed below. All others should be ignored.
CAUTION: W hile the RC68+ can be used as a handheld remote control, it is highly recommended it not be given to the final user for the following reasons:
• Since it includes adjustable code groups, the user may inadv ertently alter the installer configurations.
• Also, since the user will require IR commands from other brands of equipment to control the total system,
in addition to those of the PA635, all commands should be consolidated into one learning dev ice, for ease of use.
© 2001 Xantech Corporation.
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