Key Digital Stereo Amplifier KD DA6 User Manual

OPERATING INSTRUCTIONS  
6 & 12 Channel Component Distribution Amp  
HD View12  
Model KD-DA6 & KD-CDA12 Like HD View12 also by  
KDS, the HD HD View 6 provides economical signal distribution  
from any HDTV or SDTV Component Video source (YPrPb) to compo-  
nent HDTV-ready monitors. It uniquely resolves current connectiv-  
ity problems experienced by HDTV manufacturers and retailers, by  
effectively "gluing" together HDTV equipment manufactured to  
diverging technologies. HD HD View 6 thereby enables a best-in-  
class assembly of HDTV/SDTV sources and displays, yielding color-  
rich, artifactfree, and pristine HDTV and SDTV signals  
&
HD View 6  
It is suggested that all users always check our web site for the latest version  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
Introduction:  
Welcome to the world of Key Digital’s Personal Home  
Theater high resolution content distribution ampli-  
fiers. In today’s world where personal Home Theatres  
are elevated to new levels each and everyday in  
terms of Video and Audio resolution it is key to have  
best possible equipment handling this audio and  
video material in the delivery from “Source” and  
“Display” device. Key Digital’s dedication to providing  
the best possible solution to the HomeTheater com-  
munity is reflected in the KD-CDA 12 and the KD-DA6.  
Both units are manufactured with stringent quality  
control standards that exceed average available  
equipment for similar solutions in many ways. This  
commitment to quality, reliability and performance  
is reflected throughout the entire Key Digital product  
line. Every product is tested, and certified by their  
unrivaled product warranty of two years parts and  
labor, one of the best in the business. Please read  
the installation instructions below and enjoy your  
Component Video/Audio Amplifier trouble free for  
years to come.  
Included in this package:  
(One) KD-CDA12 or KD-DA6.  
(One) external power supply.  
(One) set of installation and technical instructions.  
(One) warranty statement.  
Page 3  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
Note before attempting to Hookup:  
The KDS-CDA12 and KD-DA6 have similar perform-  
ance and installation instructions. In essence the  
KD-CDA12 is double KD-DA6 housed in one robust  
unit. The following instructions will apply to both  
units except when specifically noted.  
Product Hookup:  
*When unpacking the unit make sure to make all  
hookups before plugging in the power adapter.*  
This unit will receive any component video input sig-  
nal (Y, Pr, Pb) with matching left and right stereo  
audio channels (L/R audio can also be substituted  
by a single digital PCM audio connection) and dis-  
tribute it to several “Display” devices around your  
HomeTheater or showroom without the loss of sig-  
nal. A typical hookup will consist of a “source” device  
that outputs component video (for example: DVD  
player, Set-Top Box unit, Satellite receiver, digital VCR,  
TM  
TM  
TM  
Sony-Playstation , XBOX , or GameCube *with  
optional component video adapter*, and several  
other consumer devices.)  
The “Source” device should be connected to the  
ports marked “input” on the  
KD-DA6 or the KD-CDA12. After hooking up the  
“Source” device to the marked input connectors , the  
KD-CDA12 or KD-DA6 will distribute the selected  
Page 4  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
input signal to all of the output connectors (the com-  
ponent video and audio output connectors are  
marked “output” the KD-DA6 has one bank of 6  
(Marked 1 through 6) sets of output connectors. The  
KD-CDA12 has two banks (Marked Channel 1 and 2,  
each corresponding to their respective inputs) of 6  
TM  
each output connectors. Each of the RCA -style  
connectors are conveniently color coded to match  
most “Source” and “Display” devices available in the  
consumer industry; Red, Green and Blue for  
Component video; White, and Red for left and right  
audio respectively (PCM audio can be distributed  
using either the left or right audio channel). When  
applicable, connecting the KD-DA6 and the KD-CDA12  
is as simple as matching the proper color coded con-  
nectors.  
TM  
*When inserting the RCA style connectors use a  
slight twisting motion when inserting the cables, this  
TM  
assures a proper connection by seating the RCS  
connector all the way in. *  
*Be careful not to confuse the Red lead of a compo-  
nent video cable with the Right or Red audio channel.  
Most often the audio wire is of thinner gauge wire  
and is together with the White or Left audio lead! The  
Red lead from the component video cable is often  
attached to the Green and Blue lead from the compo-  
nent cable as well. *  
* When running long lengths of cable please make  
Page 5  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
sure to use heavy shielded good quality cable like  
Key Digital TechFlex heavy gauge AV cable (refer to  
main catalog for cable selections, or KeyDigktal  
interactive website: ww.key digital.com.  
Now that all the input(s) are done it is time to con-  
nect the outputs to the respective “Display” devices.  
Run each of the individual set of output connectors  
to their respective “Dusplay” devices. Make sure to  
use the same caution when making the connections  
to the “Display” device (use the color matching sys-  
tem if possible.)  
Additional installation notes specific to the KD-  
CDA12:  
Page 6  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
The KD-CDA12 can be configured in 3 separate  
modes:  
Mode1: 2 inputs each driving 6 outputs each ‡ 2X6  
Mode (factory Default).  
Mode2: 1 input driving 12 outputs with the unused  
input driving the next amplifier ‡ NX12 mode.  
Mode 3: 1 Input driving 12 outputs ‡ 1X12 mode.  
Mode 1: The KD-CDA12 has two sets of inputs! This  
essentioally allows for independent connection of  
two “Source” devices and usage of the KD-CDA12 as  
two separate KD-DA6’s. Using this configuration it is  
possible to distribute two discreet Audio/Video sig-  
nals to two banks of 6 different “Display” devices  
each (use the hookup described above for the KD-  
DA6). The dipswitches on the unit should be set to  
the following:  
_1  
2
3
4
_5 _6  
7
8
SW1 ON OFF ON ON OFF OFF ON ON  
_________________________________________________________________________________________  
SW2 ON OFF ON ON ON OFF OFF ON  
* Please refer to the illustration for 2X6 termination  
mode. *  
Mode 2: The KD-CDA12 can also be cascaded or  
“Daisy Chained”. Using hookup-method allows multi-  
ple units to be connected in series. One of the two  
Page 7  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
inputs is for receiving the Source or input signal; the  
other input is used for the “Loop-Through” signal, for  
passing the signal to the next amplifier in the chain  
of series. Either input can be used as the “Source”  
input or as the “Loop-Through” input (to send the sig-  
nal to the next KD-CDA12 or KD-DA6.) The Mode 2  
setting is used for all KD_CDA12 in the chain except  
for the last unit which must be set to Mode 3 (See  
below for appropriate dip switch setting). A maxi-  
mum of 4 KD-CDA12’s can be connected in a “Daisy  
Chain” using this hook-up method.  
The dipswitches on the unit should be set to the fol-  
lowing:  
_1  
2
3
4
_5  
_6  
7
8
SW1 OFF ON OFF OFF ON ON OFF OFF  
_________________________________________________________________________________________________  
_
SW2 OFF ON OFF OFF OFF ON OFF OFF  
* Please refer to the illustration for NX12 Daisy  
Chain.*  
Mode3: The KD-CDA12 can can be configured to dis-  
tribute 1 input “Source” to 12 different “Display”  
devices.  
The dipswitches on the unit should be set to the fol-  
lowing:  
Page 8  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
_1  
2
3
4
_5  
_6  
7
8
SW1 OFF ON ON OFF ON ON ON OFF  
_________________________________________________________________________________________________  
_
SW2 OFF ON ON OFF ON ON OFF ON  
* Please refer to the illustration for NX12 Daisy  
Chain.*  
* Note: The factory default setting of the dip-  
switched is 2x6 mode! *  
Now that all the installation is done it is recommend-  
ed to double check all connections before connect-  
ing the external power supply. Once every connec-  
tion has been verifiwed, plug the external power sup-  
ply connector into the power input jack of the KD-  
DA6 or KD-CDA12. Once power has been applied, a  
green light should show the power “ON” status on  
the front of the unit. Use a reliable “Source” to test  
your connections (Like a DVD player).  
Mounting and Maintenance instructions:  
TheKD-DA6 and KD-CDA12 are built for years of trou-  
ble free operation. This unit can be installed in any  
Home theater, showroom or other configuration.  
Often the KD-DA6 or KD-CDA12 is moved to the back  
or behind the other AV “Source” devices. Cleaning or  
the maintenance is not necessary, if needed use a  
soft non-abrasive dry cloth to wipe the dust from the  
unit.  
Page 9  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
* Since the KD-DA6 and the KD-CDA12 are powered  
devices they will produce a minimal amount of  
heat, therefore it is recommended to leave enough  
room around the unit to dissipate this heat. *  
Troubleshooting:  
If, after properly connecting all of the devices in the  
system, the unit fails to properly distribute the  
“Source” signal, try any of the suggestions below.  
No power to the unit.  
Make sure that the external power supply is properly  
connected to a standard 110V household outlet.  
Check to make sure the power indicator light is  
green. If there is no power light, check and verify  
that the wall outlet is active by plugging in a known  
good component (like a desk lamp). * For added  
safety and protection it is always recommended to  
use a good quality surge protector. *  
Check to make sure that the power connector is  
properly inserted into the KD-DA6 or KD-CDA12.  
Unplug the adapter from the wall and verify the cable  
to make sure that the cable is not cut or interrupted  
anywhere.  
If none of the above works, please contact Key  
Digital technical support hotline at (888) 258-2028  
or send an e-mail to [email protected].  
Page 10  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
There is no signal displayed on the “Display”  
device.  
Verify the Sync or Green connector on all of your  
video connections; make sure it is connected to the  
correct input/output jack of the “Source” as well as  
the “Display” device.  
Make sure that the “Source” signal is of a valid for-  
mat that can be displayed by the connected  
“Display” device; for example: if the “Display” device  
connected is not capable of handling HDTV compati-  
ble video signals make sure that the “Source” device  
is set to output SD (Standard definition or 480i)  
compatible signals.  
There is a signal but it is Black and White, Green or  
Pink in Nature.  
This is indicative of a mismatch between “Source”  
and “Display” device in the component video connec-  
tions.  
Make sure that the “Source” signal is of a valid for-  
mat that can be displayed by the connected  
“Display” device; for example: If the “Display” device  
connected cannot handle HDTV compatible video sig-  
nals make sure that the “Source” device is set out-  
put SD (Standard definition or 480i) compatible sig-  
nals.  
I have a picture but it is scrolling across the  
screen of my “Display”.  
This happens when the input signal is not is not  
Page 11  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
compatible with the “Display” device. Make sure  
that the “Source” signal is of a valid format that can  
be displayed by the connected “Display” device; for  
example: if the “Display” device connected is not  
capable of handling HDTV compatible video signals  
make sure that the “Source” device is set to output  
SD (Standard definition or 480i) compatible signals.  
I have a picture but there is noise or “hum bars”  
visible in the image.  
This could happen when crossing power lines when  
routing the cable from the “Source” device to the KD-  
DA6 or KD-CDA12, or when routing the cables from  
the KD-DA6 or KD-CDA12 to the “Display” device. If  
crossing power lines is inevitable, make sure to use  
heavy shielded good quality cable like Key Digital  
techFlex heavy gauge AV cable (refer to main catalog  
for cable selections, or Key Digital’s interactive web-  
Sometimes using a shielded and noise filtering surge  
oritector can eliminate noise in power lines.  
I have No Audio.  
When connecting the Left and Right (White and Red  
connector) stereo audio channel make sure that the  
connectors are properly connected to the “Source”  
device as well as the “Display” device.  
Make sure that the volume is turned up to an audible  
level on the “Source” device as well as the “Display”  
device.  
Page 12  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
When using the Digital Audio connection “PCM” or  
coaxial audio, make sure that the “Display” device is  
capable of decoding this compressed bit stream of  
audio information. Most often when using the “PCM”  
audio function, the audio will be connected to a  
Dolby Digital® capable AV-Receiver or amplifier.  
KEY FEATURES for KD-DA6 & KD-CDA12  
Enables signal distribution any HDTV or SDTV  
Component Video source to Component Cideo HDTV  
ready monitors.  
KD-DA6 can drive 6 monitors.  
KD-CDA12 can drive 12monitors or two independent  
sets of 6 monitors.  
KD-CDA12 can be configured for 3 modes (2x6, 1x12  
terminated, Nx12 loop-through)  
Component Video and Left, Right; Digital PCM audio  
can be used instead of Left, Right.  
RCA connectors for all video and audio inputs and  
outputs.  
120MHz bandwidth.  
KEY BENEFITS for KD-DA6 & KD-CDA12  
Drives cable up to 300 feet.  
Can be cascaded to another KD-CDA6 or KD-CDA12 to  
drive as many outputs as desired from one source.  
External power supply.  
Crystal clear image.  
Page 13  
 
OPERATING INSTRUCTIONS  
Model KD-DA6  
HD View 6  
Metal Enclosure.  
Cost effective.  
2 years parts and labor warranty.  
Warranty:  
All Key Digital products are backed by a limit two  
year parts and labor warranty. For warranty infor-  
mation or RMA (Return Authorization instructions)  
please contact [email protected] or call  
(718)796-7178, ext. 10.  
Technical Specification for KD-DA6 & KD-CDA12  
Input:  
One or two groups of five RCA connectors consist of  
independent HDTV/SDTV Component Video (YprPb)  
plus two channels audio L&R.  
Video: Standard YprPb (YcrCb) 1 volt p-p 75  
Ohm terminated Component Video.  
Video brandwidth: - 3 Db @ 120 MHz.  
Audio: Standard “line” type high impedance  
two-channel, L,R. Each L or R could be used  
for PCM digital audio.  
Audio brandwidth: flat 20 Hz to 50 MHz.  
Outputs: Six or twelve groups of five RCA  
connectors each. Each group consists of  
independent HDTV/SDTV Component Video  
(YprPb) plus teo channels audio L&R.  
Video: Standard YprPb (YcrCb) 1 volt p-p @  
Page 14  
 
OPERATING INSTRUCTIONS  
Model KD-CDA12  
HD View12  
75 Ohm terminated Componenet Video.  
Audio: Standard “line” type high impendance  
two-channel, L, R. Each L or R could be used  
for PCM digital audio.  
Cable Recommendation:  
Each run of YprPb cable MUST be the same  
length (300’ max.).  
KD-DA characteristics:  
Size: 4” x 8” x 1-13/16”.  
Weight: 3lbs [1,4 Kg.]  
Power: +/- 5V DC. 110-120 VAC, 60HZ (7  
watts). No other power can be used with  
this unit!  
KD-CDA12 Characteristics:  
Size: 12-3/16 x 5-1/8 x 1-13/16” [310 x 130 x  
46 mm] (case).  
12-7/16 x 5-5/8 x 1-15/16” [316 x 143 x 49  
mm] (with protruding jack/hardware).  
Weight: 3 lbs [1,4 Kg].  
Power: 6V or 7.5v DC. 110-120 VAC, 60 HZ (7  
watts). No other power can be used with  
this unit!  
Orientation/Mounting Information:  
Cable attaches to all 4 sides of the unit.  
The top and bottom of the unit are solid  
metal (no vents).  
Page 15  
 
OPERATING INSTRUCTIONS  
Model KD-DA6 & KD-CDA12  
HD View 6 & 12  
The unit may be oriented horizontally, or  
mounted vertically on a wall. Use 2 #8 or M4  
screws to hang the unit (keyhole slots are  
provided on the base of the unit). If  
installing into sheet-rock or hollow walls,  
provide proper screw support with bolts or  
sheet-rock anchors.  
Warranty: 2 years parts and labor.  
Warranty:  
All Key Digital products are backed by a limit two  
year parts and labor warranty. For warranty infor-  
mation or RMA (Return Authorization instructions)  
please contact Michael@keydigital.com or call  
(718)796-7178, ext. 10.  
Key Digital Inc.  
128 E. Liberty Street  
Danbury, CT 06810  
Tel. 718 796-7178  
Tech & Customer Suppor  
Tel . 888 258-2028  
April 2004  
 

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