Audioaccess PX-600 Installation and operating instructions

AUDIOACCESS
PX-600
MULTI-ROOM PREAM/CONTROLLER
PRELIMINARY SERVICE MANUAL
Harman Consumer Group
250 Crossways Park Dr.
Woodbury, New York 11797

FEATURES
Six Zone, Multi-Room, Multi-Source Audio System
Flagship of the Audioaccess product line, the PX-600 Multi-Room Preamp/Controller forms the heart of a powerful multi-
room audio system. Together with our time proven wall-mounted keypads and conventional audio source equipment, the
PX-600 allows you to access and control five different music sources in six different areas simultaneously. The PX-600
combines a learning IR based source controller with six independent stereo preamps to form a six zone system in one
compact package. Multiple PX-600s are easily interconnected to form systems as large as 36 independent zones and the
PX-600 can be readily interfaced to both complex home automation and home theater systems.
You can turn zones on or off, select sources, control their basic functions, and change volume independently in each
zone, by just the touch of a single button on the KPS keypad. And unlike rotary volume controls, our low profile keypad
blends seamlessly with any decor. The PX-600 can also be operated from its own optional handheld IR remote control
from any zone. Of course, the main zone can always be operated from the PX-600's front panel. Learning to operate the
system is simplicity itself. Keypads, remotes, and even the front panel have identical controls and operate in exactly the
same way.
Customized System Operation
The PX-600 is configured at the time of installation via a detachable handheld programmer that is available only to
authorized dealers, preventing casual tampering with the comprehensive system programming. Programmable features
include: turn-on volume, maximum volume, lockout, bass and treble settings for each zone, group setup, paging setup,
and specific IR protocols for tuners, CD players, high-capacity CD changers, tape players and VCRs, as well as special
macro commands tailored for control of popular surround processors.
Optional modules provide door chime and paging capability and an RS-232 interface for integrating the PX-600 with
computer-based home automation systems.
The PX-600 is complemented both functionally and aesthetically by a Multi-Room Expander and a Multi-Room Amplifier.
This combination forms a solution for all of your multi-room needs.
Features
• Simple, intuitive operation
• Easy installation and programming
• External keypad termination board for easy hookup in advance
• Each zone has independent access to each of five audio inputs plus a paging input
• Infrared receiver built into each keypad
• Main zone rear panel IR input, compatible with standard IR repeaters
• Four-conductor wiring to keypads (two twisted pairs: telephone or data cable)
• External fuse protects keypad (mis) wiring
• Main zone operable via front panel – in addition to keypad
• Keypads control basic functions of audio sources via learned infrared commands
• External plug-in programmer (required for setup)
• Each zone assignable to one of three ALL ON groups (or none)
• Zone setup and infrared commands are stored in non-volatile memory
• Compatible with the Audioaccess six-zone, stereo, multi-room amplifier
• Compatible with the Audioaccess multi-room expander
• Expandable to 36 zones
• Paging and doorbell features available with optional Page/Doorbell Module
• RS-232 Interface Module available
• Compatible with other popular home automation and control systems
• Special grounding, filtering and intelligent circuit design for superior protection
• IR outputs compatible with industry standard systems
• Trigger outputs designed to drive relays for each zone
• System trigger output active whenever any zone is on
• IR loopthru output

Specifications PX-600 Multi-Room Controller
Audio Section
Inputs:
• Five stereo source inputs, 1 mono page input, each with loopthru capability
• Input impedance: 10k ohms
• Maximum input voltage: 3.5 Vrms
Outputs:
• Six stereo preamp outputs with independent volume, bass and treble
• Six stereo zone outputs (fix level post input selector)
• Tape output from the main zone (zone 6)
Source Equipment Control and Interface
Inputs:
• Trigger input to facilitate sharing source equipment (controls switched outlet and "stop" commands)
• Keypad interface connector
• DC voltage input for zone trigger outputs
• Hardwired IR input to control main zone from industry standard IR receivers
Outputs:
• Trigger output from each zone to control external relays
• One system trigger output to control external relay (active when system is on)
• Six infrared emitter jacks, one for each audio source (5) plus ALL
• IR loopthru output
• Switched AC outlet (North American model only)
Controls:
• Front panel controls zone 6 (controls: power, source selectors, volume, mute, and All Off)
• Independent source selection: Tuner, CD, Tape, Aux, Video, etc.
• Control of basic source functions (i.e. play, skip track, skip disc, skip preset, fast forward, etc.)
• Independent volume control per zone
• Independent On/Off per zone
• Programmable All On features

Specifications Preamp Outputs Zone Outputs
Frequency Response 10-84kHz, +0, -1
dB 10-95kHz, +0, -1 dB
S/N (ref: 1kHz, 1 Vrms, Filter
at 22kHz, Volume at unity
gain
> 99 dBV > dBV
THD+Noise (@ 1kHz, Filter
at 80kHz, Volume set at
unity gain
<0.008% (500mV
input signal) <0.004% (1Vinput signal)
Maximum Output Level 3.5 Vrms 3.5 Vrms
Output Impedance 470 ohms 470 ohms
Left/Right Crosstalk (@1kHz,
each input) <-85 dB <-85 dB
Input to Input Crosstalk (@
1kHz, any two inputs <-100 dB <-100 dB
Zone to Zone Crosstalk (@
1kHz, any two zones <-100 dB <-100 dB
Maximum Gain 20 dB Unity
Volume Control 80 dB in 2 dB
steps N/A
Bass (Shelving type, 100 Hz) +15, -12 dB (3 dB
steps) N/A
Treble (Shelving type,
10kHz) +12, -12 dB (3 dB steps) N/A
Signal Connector Type RCA with short hot
pin (makes shield
connection first)
Power Requirements:
• 115 volts AC, 50Hz, 40 watts (not including equipment connected to switched outlet)
Dimensions/Weight:
• 17-3/8" W x 4" H x 15" D (442mm x 102mm x 381mm) (with connectors & feet)
• 12.2 lb (5.5 kg)

PX
PX- -600 600
FieldRepair
FieldRepair

LOCKUPSorSLOWOPERATION
LOCKUPSorSLOWOPERATION
Incorrect Wiring
IR Interference
Keypad Termination Switch

KEYPADINSTALLATION
KEYPADINSTALLATION
 Make Tight Connections
 Insure Power, Ground, and Data
wires are in Correct Order
 Provide Strain Relief On KPT
 Keep On hand Extra KPT Blocks
 Do Not “Insert” Insulation Into
Connector
 Install Keypad with Termination
Switch in “UP” Position (off)

KEYPADREPAIRS
KEYPADREPAIRS
 Replace RS 485 Driver
 Replace Keypad Processor Board

ReplacingProcessorBoard
ReplacingProcessorBoard

AudioaccessMCI
AudioaccessMCI
MCI Multi-room Computer Interface
RS-232 to RS-485 Translator

PX
PX- -600FieldRepairs 600FieldRepairs
 Unit Contains 3 Sections
–Audio Preamplifiers
–CPU
–Power Supply
 Field Repairs May be Performed to
Power Supply and CPU

•
•AudioSignal AudioSignal
Path
Path •
•CPU CPU • •Power Power
Supply
Supply

AudioSignal
AudioSignal
Path
Path CPU
CPU Power Power
Supply
Supply