Audio Authority 9870 Users Manual

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TM

Model 9870
(9871, 9878)

Residential Category 5
HDTV Distribution System

DuoDrive™ Residential Category 5 HDTV Distribution System
Overview

The DuoDrive (Model 9870) allows HDTV signals to be distributed throughout the home from a single source.
Component video (YPbPr), analog stereo audio, and digital audio (coaxial) signals are included in each two-cable
Cat 5 pathway. By connecting IR remote control systems to the DuoDrive system, users can easily control the source
equipment from other rooms in the house. IR receiver and emitter products are not included with the DuoDrive.

System Design

The DuoDrive is comprised of one Model 9871 RCA-to-Category 5 Driver and two Model 9878 wallplate/receivers.
(Two other Cat 5 receiver styles are also available, Models 9879 and 9880.) These products enable distribution of
audio, video and IR control signals on Cat 5 cable runs of up to 1,000 feet. The buffered Cat 5 bus outputs on each
9871 drive one or two wallplate/receivers. To expand output capacity of the system, connect together an unlimited
number of 9871 Drivers using Kit 46, included with each Driver. High quality RCA patch cables can also be used
for expansion.
One power supply required
for each 9871 Driver
(18-volt DC, center-positive
Part# 571-014)

DIGITAL AUDIO

ANALOG AUDIO

COMPONENT VIDEO

RCA INPUT

CAUTION!

The bus output jacks should
not be connected to a TV or
receiver unless the line is
properly terminated. Call
Audio Authority for details.

Driver
9871

A

B

Driver
9871

A

AV Source
Component
AV Equipment
9878 Wallplate

B

Driver
9871

A

B

Connect all bus jacks
including IR (Kit 46 shown)

Cat 5,
Cat 5e,
or Cat 6
Cable

Note: This
configuration of
three 9871 Drivers
could support six
wallplates.
9878 Wallplate

for each wallplate is supplied through the Cat 5 cable from the 9871’s power supply.

Rough-In

Wallplate/receivers are normally placed on the wall behind the television sets or entertainment centers remoted off
the main home entertainment system. Set a plaster ring at each wallplate location. Pull two runs of good quality
Category 5, 5e or 6 UTP cable from the head-end location to each wallplate/receiver location. Be careful not to
pinch, kink, or tightly staple the cable. Mark both ends of the cables in each set A and B, or use two different jacket
colors of UTP cable for A and B. It will be helpful to mark the cable length of each run at the wallplate/receiver end
because you will have to adjust the cable length compensation when installing each wallplate/receiver.

Cat 5 Wallplate/Receivers

All three wallplate/receiver styles deliver component video, digital and analog audio, and IR signals. The 9878

Model 9880
Model 9878

Model 9879

offers a wallplate format to fit a
standard two-gang electrical box,
and includes an RF pass through
jack.
The 9879 is a single gang Decora
style wallplate with two different
IR connection options. The 9880
is an enclosed version ideal for
locations where a wallplate style
receiver is not practical. DC power

If installing more than one 9871 Driver, connect all the bus outputs
of the first Driver to the inputs of the next Driver using high quality
patch cables or Kit 46 (sold separately), which provides convenient
male to male connectors for a more compact installation. Connect
bus jacks for all channels whether or not they will be used.
Pull two cables to each wallplate location, preferably using a different
colored cable jacket for A and B cables. Install an RJ-45 termination
on each end of every Cat 5 cable, using EIA-568B pairing (pins 12, 3-6, 4-5, 7-8). If possible, use EZ RJ-45 connectors. Check each
cable with a network cable tester – CONTINUITY TESTING IS NOT
ADEQUATE – the pairs must match the EIA-568B color code.

RCA Cable Length =
Less than 199 ft.

RJ45

Note: EIA 568A or B
standard may be used.
(B is pictured here.)
Make sure both ends are
terminated with the
same color code.

CATEGORY 5,
5e or 6 CABLE

Mount the (first) 9871 Driver to any flat vertical or horizontal surface
using the screws provided. You may wish to leave space to add
9871 Drivers to expand output capacity. Connect component video
and all audio connections desired from the source equipment to the
inputs of the 9871. Use high quality, matched sets of component
video cables, and high quality RCA cables for audio. The IR bus
jacks are only used to connect 9871 modules together.

LATCH
Category 5
Connector
Termination
This diagram is
oriented with the
latch on the RJ45
connector facing
down.

WHT / ORN
ORN
WHT / GRN
BLU
WHT / BLU
GRN
WHT / BRN
BRN

Installing the 9871 Driver

18-volt power supply PN 571-014
9871
Driver

Cable Length
Compensation = 3

Cable Length
Compensation = 1

9878
Wallplate

AV Equipment

Cat 5 Cable Length = 320 ft.

A

9878
Wallplate

B

Cat 5 Cable Length = 180 ft.

Cat 5 cable A
Cat 5 cable B

BE CERTAIN to connect the A cable to the A jack and the B cable to
the B jack or damage to the wallplate/receiver may occur. Adjust the
cable length compensation if the cable between the Driver and the
wallplate/receiver is over 100 feet long. Set the compensation at 1 for
cables 100-199 ft. long, and 2 for 200-299 ft. cables, etc. Do not
permanently mount the wallplate/receivers until after system testing.
Carefully connect the A and B cables to the Driver(s), power the source
components, TVs and AV receivers, and plug in 9871 power supplies
to test the system. Connect a TV to each wallplate/receiver location to
refine cable length compensation settings. Use the MINIMUM
compensation setting that still provides the best picture.
Ideally, Drivers should be located near the main home theater system,
but if they must be placed far away, compensate for losses of the long

716-210

Installing 9878 Wallplates

A

B

Made in USA by Audio Authority Corp.
Toll Free USA and Canada:

800-322-8346

www.audioauthority.com

CABLE LENGTH COMPENSATION
SET TOTAL BUS CABLE
LENGTH FROM HEAD END

Cable Length
Compensation

0 = 0-99 FEET,
1 = 100-199, ETC.

9878 Rear View

coaxial cable by increasing the cable compensation setting by one click for each 200 feet of coaxial cable length
(see diagram below). For example, if the coaxial cable length from main system to Driver is 220 feet (1 click)
and the Cat 5 cable length to a certain wallplate is 250 feet (2 clicks), the correct Cable Length Compensation
for that wallplate is 1 + 2 = 3 clicks. Conditions vary, so it is best to verify settings using the video display that

RCA Cable Length = 220 ft.

18-volt power supply PN 571-014

9871
Driver

Cable Length
Compensation = 4
9878
Wallplate

Cable Length
Compensation = 3
A

AV Source Component

Cat 5 Cable Length = 370 ft.

9878
Wallplate

B

Cat 5 Cable Length = 250 ft.

will be installed in each location.
A pass-through F-connector is provided in case antenna connection is desired. (A separate coaxial cable must
be pulled; antenna signals are not carried on the Cat 5 cable).

Connecting to an IR network
The DuoDrive does not have an IR remote control system; it provides a discrete three-strand Cat 5 pathway
for a third party system. Connect an IR remote control system input to the Driver IR output stereo 3.5mm jack
(see example diagram below). Connect an IR receiver to each wallplate/receiver and position them appropriately
in the rooms. Do not connect any equipment to the vacant white RCA jacks marked “IR”.
18-volt power supply PN 571-014

AV Equipment
Driver
9871

9871
Driver

IR Remote
Control
System
AV Equipment

A

B

A

Note: This
configuration of two
9871 Drivers could
support four
wallplates.

Note: IR remote control
system and receivers are
not included.
IR Receiver

B

9878
Wallplate

IR
Remote

Cat 5, Cat 5e,
or Cat 6 Cable

In Case of Difficulty

If any problems arise that are not covered in this
manual, call Audio Authority Technical Support at
800-322-8346, or outside the US and Canada, call
859-233-4599.
2048 Mercer Road, Lexington, Kentucky 40511-1071
Phone: 859-233-4599 • Fax: 859-233-4510
Customer Toll-Free USA & Canada: 800-322-8346
Website: http://www.audioauthority.com

752-480
11/08



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