VocoPro KJ-7800 PRO User manual

owner's manual
KJ-7800PRO
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL
AND CROSSFADER VIDEO TOGGLE
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10

Safety Instructions
CAUTION
RISK OF SHOCK
CAUTION: To reduce the risk of electric shock,
do not remove cover (or back). No user-
serviceable parts inside. Only refer servicing to
qualified service personnel.
WARNING
To reduce the risk of fire or electric shock, do
not expose this unit to rain or moisture.
Explanation of Graphical Symbols
The lightning flash & arrowhead
symbol, within an equilateral triangle,
is intended to alert you to the
presence of danger.
The exclamation point within an
equilateral triangle is intended to alert
you to the presence of important
operating and servicing instructions.
1. Read Instructions - All the safety and operating
instructions should be read before the appliance is
operated.
2. Retain Instructions - The safety and operating
instructions should be retained for future reference.
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. Attachments - Do not use attachments not
recommended by the product manufacturer as they may
cause hazards.
6. Water and Moisture - Do not use this unit near water.
For example, near a bathtub or in a wet basement and
the like.
7. Carts and Stands - The appliance should be used
only with a cart or stand that is recommended by the
manufacturer.
7 A. An appliance and cart combination
should be moved with care. Quick stops,
excessive force, and uneven surfaces may
cause an overturn.
8. Ventilation - The appliance should be situated so its
location does not interfere with its proper ventilation. For
example, the appliance should not be situated on a bed,
sofa, rug, or similar surface that may block the
ventilation slots.
9. Heat - The appliance should be situated away from
heat sources such as radiators, heat registers,
stoves, or other appliances (including amplifiers)
that produce 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
appliance.
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 particular attention to cords at plugs,
convenience receptacles, and the point where they exit
from the appliance.
13. Cleaning – Unplug this unit from the wall outlet
before cleaning. Do not use liquid cleaners or
aerosol cleaners. Use a damp cloth for cleaning.
14. Power lines – An outdoor antenna should be
located away from 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 plug has been damaged; or
B. Objects have fallen into the appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally
or exhibits a marked change in performance; 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.
Note:
To CATV system installer s (U.S.A.): This reminder is
provided to call the CATV system installer s attention to
Article 820-40 of the NEC that provides guidelines for
proper grounding and, in particular, specifies that the
cable ground shall be connected as close to the point of
cable entry as practical.
2

FCC INFORMATION (U.S.A.)
1. IMPORTANT NOTICE: DO NOT MODIFY THIS
UNIT!: This product, when installed as indicated in the
instructions contained in this manual, meets FCC
requirements. Modifications not expressly approved by
Vocopro may void your authority, granted by the FCC,
to use this product.
2. IMPORTANT: When connecting this product to
accessories and/or another product use only high
quality shielded cables. Cable(s) supplied with this
product MUST be used. Follow all installation
instructions. Failure to follow instructions could void your
FCC authorization to use this product in the U.S.A.
3. NOTE: This product has been tested and found to
comply with the requirements listed in FCC Regulations,
Part 15 for Class "B" digital devices. Compliance with
these requirements provides a reasonable level of
assurances that your use of this product in a residential
environment will not result in harmful interference with
other electronic devices. This equipment
generates/uses radio frequencies and, if not installed
and used according to the instructions found in the
owner's manual, may cause interference harmful to the
operation of other electronic devices. Compliance with
FCC regulations does not guarantee that interference
will not occur in all installations. If this product is found
to be the source of interference, which can be
determined by turning the unit "Off" and "On", please try
to eliminate the problem by using one of the following
measures:
Relocate either this product or the device that is being
affected by the interference.
Use power outlets that are on different branch (circuit
breaker or fuse) circuits or install AC line filter(s).
In the case of radio or TV interference, relocate/reorient
the antenna. If the antenna lead-in is 300-ohm ribbon
lead, change the lead-in to coaxial type cable.
If these corrective measures do not produce satisfactory
results, please contact your local retailer authorized to
distribute Vocopro products. If you can not locate the
appropriate retailer, please contact Vocopro, 1728
Curtiss Court, La Verne, CA 91750.
1. To ensure the finest performance, please read this
manual carefully. Keep it in a safe place for future reference.
2. Install your unit in a cool, dry, clean place - away from
windows, heat sources, and too much vibration, dust,
moisture or cold. Avoid sources of hum (transformers, v
motors). To prevent fire or electrical shock, do not expose to
rain and water.
3. Do not operate the unit upside-down.
4. Never open the cabinet. If a foreign object drops into the
set, contact your dealer.
5. Place the unit in a location with adequate air circulation.
Do not interfere with its proper ventilation; this will cause the
internal temperature to rise and may result in a failure.
6. Do not use force on switches, knobs or cords. When
moving the unit, first turn the unit off. Then gently disconnect
the power plug and the cords connecting to other
equipment. Never pull the cord itself.
7. Do not attempt to clean the unit with chemical solvents:
this might damage the finish. Use a clean, dry cloth.
8. Be sure to read the "Troubleshooting" section on common
operating errors before concluding that your unit is faulty.
9. This unit consumes a fair amount of power even when the
power switch is turned off. We recommend that you unplug
the power cord from the wall outlet if the unit is not going to
be used for a long time. This will save electricity and help
prevent fire hazards. To disconnect the cord, pull it out by
grasping the plug. Never pull the cord itself.
10. To prevent lightning damage, pull out the power cord
and remove the antenna cable during an electrical storm.
11. The general digital signals may interfere with other
equipment such as tuners or receivers. Move the system
farther away from such equipment if interference is
observed.
NOTE:
Please check the copyright laws in your country
before recording from records, compact discs,
radio, etc. Recording of copyrighted material may
infringe copyright laws.
CAUTION
The apparatus is not disconnected from the AC power
source so long as it is connected to the wall outlet,
even if the apparatus itself is turned off. To fully insure
that the apparatus is indeed fully void if residual power,
leave unit disconnected from the AC outlet for at least
fifteen seconds.
CAUTION:
READ THIS BEFORE OPERATING YOUR UNIT
Voltage Selector (General Model Only)
Be sure to position the voltage selector to match the
voltage of your local power lines before installing the
unit.
220V
110V
3

Listening For A Lifetime
Selecting fine audio equipment such as the unit you ve just purchased is only the start of
your musical enjoyment. Now it s time to consider how you can maximize the fun and
excitement your equipment offers. VocoPro and the Electronic Industries Association s
Consumer Electronics Group want you to get the most out of your equipment by playing it
at a safe level. One that lets the sound come through loud and clear without annoying
blaring or distortion and, most importantly, without affecting your sensitive hearing.
Sound can be deceiving. Over time your hearing “comfort level” adapts to a higher volume
of sound. So what sounds “normal” can actually be loud and harmful to your hearing. Guard
against this by setting your equipment at a safe level BEFORE your hearing adapts.
To establish a safe level:
• Start your volume control at a low setting.
• Slowly increase the sound until you can hear it comfortably and clearly, and without
distortion.
Once you have established a comfortable sound level:
• Set the dial and leave it there.
• Pay attention to the different levels in various recordings.
Taking a minute to do this now will help to prevent hearing damage or loss in the future.
After all, we want you listening for a lifetime.
Used wisely, your new sound equipment will provide a lifetime of fun and enjoyment. Since
hearing damage from loud noise is often undetectable until it is too late, this manufacturer
and the Electronic Industries Association s Consumer Electronics Group recommend you
avoid prolonged exposure to excessive noise. This list of sound levels is included for your
protection.
Some common decibel ranges:
Level
30
40
50
60
70
80
Example
Quiet library, Soft whispers
Living room, Refrigerator, Bedroom away from traffic
Light traffic, Normal Conversation
Air Conditioner at 20 ft., Sewing machine
Vacuum cleaner, Hair dryer, Noisy Restaurant
Average city traffic, Garbage disposals, Alarm clock at 2 ft.
The following noises can be dangerous under constant exposure:
Level
90
100
120
140
180
Example
Subway, Motorcycle, Truck traffic, Lawn Mower
Garbage truck, Chainsaw, Pneumatics drill
Rock band concert in front of speakers
Gunshot blast, Jet plane
Rocket launching pad
-Information courtesy of the Deafness Research Foundation
4

KJ-7800PRO
PROFESSIONAL KARAOKE MIXER
WITH DSP KEY CONTROL AND
CROSSFADER VIDEO TOGGLE
Table of Contents
INTRODUCTION
Safety Instructions ......................................................... 2
FCC Information ............................................................ 3
Listening For A Lifetime .................................................. 4
Welcome ..................................................................... 6
KJ-7800 Pro Features ................................................... 7
Mounting ..................................................................... 7
Getting Connected ......................................................... 8
Microphone Panel Description and Functions ..................... 9
Middle Panel Description and Functions .................... 10-11
Master Panel Description and Functions .................... 12-13
Rear Panel Description and Functions ....................... 14-15
Advanced Operations .............................................. 16-19
Troubleshooting ........................................................... 20
Specifications .............................................................. 21
Other Recommended VocoPro Gear .......................... 22-24

Welcome….
And Thank you for purchasing the KJ-7800 from VocoPro, your ultimate choice in
Karaoke entertainment! With years of experience in the music entertainment business,
VocoPro is a leading manufacturer of Karaoke equipment, and has been providing
patrons of bars, churches, schools, clubs and individual consumers the opportunity to
sound like a star with full-scale club models, in-home systems and mobile units. All our
products offer solid performance and sound reliability, and to further strengthen our
commitment to customer satisfaction, we have customer service and technical support
professionals ready to assist you with your needs. We have provided some contact
information for you below.
VocoPro
1728 Curtiss Court
La Verne, CA 91750
Toll Free: 800-678-5348
TEL: [phone]
FAX: [phone]
VocoPro Company Email Directory
Customer Service & General Information
[email protected]
Tech Support
[email protected]
Remember Our Website
Be sure to visit the VocoPro website www.vocopro.com for the latest information on new
products, packages and promo s. And while you re there don t forget to check out our
Club VocoPro for Karaoke news and events, chat rooms, club directories and even a
Service directory!
We look forward to hearing you sound like a PRO, with VocoPro, your ultimate choice in
Karaoke entertainment.
FOR YOUR RECORDS
Please record the model number and serial number below, for easy reference, in case of loss or theft. These
numbers are located on the rear panel of the unit. Space is also provided for other relevant information
Model Number
Serial Number
Date of Purchase
Place of Purchase

7
1
2
4
3
KJ-7800 Features
Mounting
To mount, carefully place the KJ-7800 Pro in the rack space of your case. The KJ-7800 Pro takes 4
screws to mount. Make sure holes are aligned evenly. Use an alternating “X” rotation when screwing to
ensure even tension and alignment.
(See diagram below)
You will need:
• 19” Rack Case
• 4 Mount Screws
• Phillips-head Screwdriver
Note:
When top mounting, make
sure you have at least 2
rack-spaces available.
•Professional grade KJ, DJ and VJ mixer with Video Select Toggle/Crossfader
•19” rack mountable, requiring only 6 spaces.
•7 input options; 4 Mics each with XLR/Phono, and 3 switchable AV/Phono/CD
inputs, including a pair with line input option
•4 Mic Insert Loops for 1/4” connection of external stereo effects.
•3 video inputs and 3 outputs for multi-screen video options.
•Assignable 11-step Digital Key Controller with 1/2 tone increments per step and
Remote Key Control option.
•Professional Digital Echo for each Mic channel with master Repeat and Delay and
Level controls.
•Vocal Cancel and Vocal Partner for use with Multiplex CDs.
•Vocal Eliminator can remove lead vocals from standard recordings.
•Talkover function with automatic mode, headphone jack with Level control and 12V
DJ lamp jack for professional production.
•5-Band Graphic Equalizer for best fidelity and precision tuning.
•Booth Phono Outputs, Balanced XLR or Unbalanced RCA Master Outputs, Auxiliary
AV and Record Outputs.

8
Below we provide some general information to help understand how a professional Karaoke system works
and how it is connected.
Signal Path
When connecting your professional Karaoke system, the key is keeping in mind the signal path from the
source music into your KJ-7800 and out to your monitor, amp and speakers. Understanding the signal path
before installation will make the process easier and most likely save you lots of time! Below is a diagram
illustrating a basic signal path.
Since the KJ-7800 Pro has numerous connectivity options, and there exist many variations in user needs, we
illustrate a system where all possible connections are used. Note: This is a reference model only. Reference
what you need from the diagram. Some connections may not apply for your system.
IN OUT
OUT
TV
CDG Player AMP
Getting Connected
TV TV TV
Phonograph 1
Phonograph 2

9
4. BASS - This controls the level for low frequency EQ.
Use this control to boost or reduce the BASS frequencies
in the audio signal.
5. ECHO - This controls the level of DIGITAL ECHO applied
to each microphone channel. Use this control to increase
or reduce the ECHO applied.
6. CHANNEL FADER - The CHANNEL FADER raises
or lowers the Mic or line volume of the channel as it is
moved up or down.
7. CUE - This monitors the input signal from the mixer
board to the headphones. Press CUE on any channel to
hear only that channel through the headphones. Note: If
you cue more than one channel, each selected channel
will be audible as well.
8. KEY - This assigns DIGITAL KEY CONTROL to each
applicable channel. If the button is pressed, the DIGITAL
KEY CONTROL setting will be applied.
9. TALKOVER - The TALKOVER feature allows the KJ/
DJ/VJ to make announcements by instantly lowering the
music volume when there is mic activity. To use, select
“ON.” Select “OFF” to disable. When set to “AUTO,” it will
automatically lower the music volume when mic activ-
ity is present, and return music when no mic activity is
present. Note: This feature only works with the Mic 1,
as that channel is designed to be used by KJs, DJs and
VJs. Other channels are not affected by the Talk Over
function.
1. XLR or 1/4” MICROPHONE/LINE INPUTS - This
combination input can be used to connect either a low
impedance (XLR) high impedance (1/4”) microphone or
line-level device. The 1/4” INPUT jack is located in the
center of the jack housing. The XLR INPUT jack is locat-
ed within the outer perimeter of the jack housing. Align
the 3 pins of your XLR mic cable with the appropriate
positioning in the jack.
2. GAIN - This controls the input level from any device
that is connected to the mic/line input jack. To increase
GAIN level, turn clockwise. To decrease, turn counter-
clockwise.
3. TREBLE - This controls the level for high frequency
EQ. Use this control to boost or reduce the TREBLE in
the audio signal. To increase TREBLE, turn clockwise. To
decrease, turn counter-clockwise.
Microphone Panel
Descriptions and Functions
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/RBOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
10
10
0
5
10 0
5
10 0
5
0
5
10
10
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -20 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
1
2
3
4
5
6
8
10 9
9
7

10
Middle Panel
Descriptions and Functions
1. VIDEO SELECT toggle - Holding this switch in
the CROSSFADER position for a second toggles vid-
eo selection options between either CROSSFADER
activation and MANUAL.
When in CROSSFADER mode, the LED above
SOURCE toggle will illuminate blue. This indicates
that video ouput signal is recieved from the two
assigned sources in the crossfader ASSIGN selec-
tions. You can alternate between any two of the
three source inputs by pushing the crossfader ei-
ther to the far left or far right. As you shift the
crossfader in either direction, you will see the
respective VIDEO 1, 2, or 3 LEDs above the
SOURCE toggles illuminate.
In MANUAL mode, the CROSSFADER VIDEO
TOGGLE LED is not illuminated, indicating that you
can manually shift between the VIDEO LEDs by sim-
ply pushing the VIDEO SELECT toggle in the MAN-
UAL postion repeatedly to cycle through VIDEO 1
(red LED), 2 (green LED) and 3 (yellow LED).
2. STEREO CHANNEL SOURCE toggle - This
switch will toggle between AV, PHONO/LINE and
CD sources connected to that channel. As stated
above, if you have both a CD+G player and a turn-
table connected to the same channel, only that
device to which this SOURCE TOGGLE is selected
would be audible. Applicable graphics/video sig-
nals are output accordingly.
3. SIGNAL light - This light illuminates blue when a
signal is recieved to STEREO CHANNEL 1, 2 or 3.
4. GAIN - This knob controls the input level from
that channel’s selected source. To increase the
GAIN, turn clockwise. Note: Adjusting this knob is
not synonymous to adjusting the channel fader. The
gain knob adjusts the input level from the source,
while the channel fader adjusts the output level
from the source. For best audio results, adjust
GAIN until just before distortion is noticeable.
5. VOCAL PARTNER/MULTIPLEX FUNCTION &
VOCAL ELMINATOR
VOCAL PARTNER/MULTIPLEX - This feature can
alternately remove and activate “guide” or “lead” vocals
with compatible Multiplex media. On this type of media,
music and lead vocals are panned hard left and right.
With the first press of this button, the red MULTIPLEX
LED is lit, indicating that lead vocals have been re-
moved, a feature also known as VOCAL CANCEL. The
channel with music only is duplicated so it is heard in
both left and right channels. Some backing vocals will
remain if there is overlap in the way they are recorded.
Pressed two more times, this button will illuminate the
yellow LED to indicate VOCAL PARTNER and guide vo-
cals will be activated.
VOCAL ELIMINATOR - Press the button until the cen-
ter, green LED illuminates. With standard recordings,
you will be able to partially remove lead vocals to turn
any recording into a Karaoke performance or for remix-
ing possibilities. To return to regular disc playback,
press this button until all three LEDs are unlit.
6. DIGITAL KEY CONTROL - Key Control allows you to
modify the original key of a track without changing its
tempo to match the natural range of your voice. You
can raise or lower your source music a total of 11
steps, or half note increments from its “natural” key.
To step DOWN or “flat (b)” the key, press the left but-
ton. To step UP or “sharp (#)” the key, press the right
button. To revert back to the original/natural key press
the middle NORMAL button. Note: Key changes are only
cueable when Master cueing.
7. CHANNEL FADER - Each fader raises and lowers
the volume of the corresponding STEREO 1, 2 or 3
channel as it is moved up or down.
8. CUE - This monitors the input signal from the mix
board to the headphones. Press CUE to hear that chan-
nel through the headphones. Note: If you cue more than
one channel, those channels will be audible as well.

11
9. KEY - This assigns DIGITAL KEY CONTROL to
the channel. If the button is pressed, DIGITAL
KEY CONTROL will be applied to that channel.
10. CROSSFADER/VIDEO TOGGLE - The
CROSSFADER allows the user to fade the music
out from one source and in to another source,
while simultaneously switching the VIDEO TOGGLE
between the two associated video inputs. For
example, a clean fade from one CDG to another
is possible, automatically cueing the lyrics for
each disc on your video monitor.
The KJ-7800 eliminates manual video cueing
from the music source switching process.
However, you have the choice of cueing manually
if you prefer or the situation calls for it. Select
either MANUAL or CROSSFADER from the VIDEO
SELECT toggle (pg 10,#1). Note: The crossfad-
er will only fade in/out from the two sources that
have been assigned to it.
11. ASSIGN - These buttons work in conjunction
with the CROSSFADER. Assigning channels
determines which inputs will be included in the
crossfade. For example, to fade between a track
from STEREO CHANNEL 1 to a track cued on
STEREO CHANNEL 2, the ASSIGN button on the
left should be pressed to illuminate the 1 LED,
and the right pressed to illuminate the 2 LED.
You will hear that one input source “fades” out”
while the other fades in when the
CROSSFADER is moved from left to right.
Note: Make sure your STEREO CHANNEL
SOURCE toggle is set properly to the input
type you are using (see BACK PANEL for
connections).
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
1
2
3
4
5
6
7
8
9
10 11
Middle Panel
Descriptions and Functions Cont...

12
Master Panel
Descriptions and Functions
1. POWER - This button turns the KJ-7000 Pro ON
in the upper position, OFF in lower.
2. LED METERS - These meters display system
OUTPUT LEVELS. For maximum performance with a
clean, undistorted signal, increase source output, as
well as the KJ-7800’s GAIN, CHANNEL FADER and
L/R MASTER FADERS until meter peaks in the yel-
low LED range (-2 to +4). Input should rarely cause
meters to peak in the range of the red LEDs for best
sound.
3. 12V LIGHT JACK (BNC) - This BNC style jack is
for connecting a 12V DJ LIGHT, ideal for mixing in
dark environments.
4. AV OUT LEVEL - This level control only affects the
RCA jacks from AV OUT on the back panel.
MASTER and CHANNEL faders will not effect ouput
levels from these jacks.
5. MASTER EQUALIZER - This 5-band, Graphic EQ
gives you additional control over your tone in the 60
Hz, 250 Hz, 1KHz, 4Khz and 12KHz frequencies
with a +/- 12 boost or cut for precise room
tuning. Adjust these controls to suit your sound
quality preferences.
6. MASTER EQUALIZER ON/OFF - This button
must be pressed in to activate the Graphic EQ.
7. CUE/MASTER - This button toggles between
CHANNEL Cueing and MASTER Cueing. When
CHANNEL cueing, you will only hear channels that
have been selected for Cueing. When MASTER
Cueing, you will hear MASTER OUTPUT, regardless of
which channels have been selected for Cueing. Note:
Digital Key Control changes are only audible when
MASTER Cueing.
8. HEADPHONES jack - This 1/4” jack is for
connecting HEADPHONES.
9. PHONES LEVEL - This control adjusts the
headphones volume level when cueing. Turn clockwise
for more volume and counter-clockwise for less
volume. Note: Volume output may be much louder
when CHANNEL cueing than MASTER cueing. It is
recommended to adjust this level prior to toggling
between cue options.
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
10
10
0
5
10 0
5
10 0
5
0
5
10
10
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
1
23
4
5
6
9
7
8

13
Master Panel
Descriptions and Functions Cont...
10. MASTER L/R FADERS - These slide con-
trols raise and lower the Left and Right MASTER
OUTPUT levels for all stereo channels as they
are moved up and down, providing an overall
volume level for each channel mixed together.
Balance each channel’s individual fader control
for the best mix.
11. BOOTH FADER - This slide control raises
or lowers the output level for the BOOTH OUT
located on the back panel.
Note: This slide control is only functional
when monitors or a control booth is
connected from the corresponding outputs.
12. ECHO - This button controls whether ECHO
is applied to selected MIC channels. If this
button is pressed to the in position, the ECHO
settings will be applied to any assigned channels.
If it is in the extended position, the ECHO settings
will not be applied to any channel, whether individu-
ally selected or not. Individual channel ECHO is
adjusted through MIC channel ECHO control.
13. ECHO LEVEL - This control serves as a
master LEVEL for the ECHO settings. If ECHO is
assigned to a MIC channel, this knob will control
how much ECHO is applied before individual
adjustments. Each channel-specific echo control
and should be used in unison with this master
level control.
14. REPEAT - This control adjusts the number
of ECHO repetitions before the effect “decays.”
In other words, as more REPEAT is applied,
more echo intervals will be heard before the
ECHO fades out.
15. DELAY - This control adjusts length of each
time between ECHO intervals. As more DELAY is
applied, there will be the illusion of more “space”
between the starting and ending point of each
echo.
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
10
10
0
5
10 0
5
10 0
5
0
5
10
10
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
15
14
13
11
5
12
10

14
1. AC INPUT - This is the terminal for the AC power cable. Carefully insert the AC power cable here. The
AC power cable should fit firm into housing.
2. BOOTH OUT - These 1/4” jacks are for sending audio to BOOTH/MONITOR speakers. The output level
to the BOOTH/MONITOR speakers is controlled via the BOOTH fader. Connect an appropriate cable from
these jacks to your BOOTH/MONITOR speakers. Note: If your Booth/Monitor speakers do not have a
built-in amplifier, you will need to connect them to a dedicated amplifier to power them.
3. BALANCED (XLR) MASTER OUT - These BALANCED MASTER OUT jacks are for balanced XLR cables.
These jacks provide connection to a power amplifier. Note: If your amplifier has 1/4” input jacks, you will
need 1/4” to XLR cables or adaptors. Some amplifiers offer multiple connection options, including RCA
“unbalanced” input. See number 4.
4. UNBALANCED (RCA) MASTER OUT - These UNBALANCED MASTER OUT jacks are for
standard RCA cables. These jacks provide connection to a power amplifier as well. Note: If your amplifier
has 1/4” input jacks, you will need 1/4” to RCA cables or adaptors.
5. RECORD OUT - These L/R RCA jacks jacks bypass the MASTER OUTS for connection to any CD burner,
cassette, or DAT recorder to record your mix. Ideal for the mobile DJ/KJ that wants to offer their cus-
tomer a recording at the end of their performance.
6. AV OUT - In addition to the MASTER and BOOTH outs, this mixed RCA L/R output gives you an additional
option for connection of your mix to external components. Use in conjuction with the AV OUT LEVEL on the
Master Panel (pg 12, #4) to control the signal level.
7. AV INPUT 1, 2, 3 - These STEREO INPUT jacks are for connecting external components to the KJ-7800
Pro. You can connect any L/R RCA cables to these inputs, but there are dedicated inputs for CD or
PHONO/LINE to provide optimal sound quality. Adjust the STEREO CHANNEL SOURCE toggle on the middle
panel of the KJ-7800 accordingly.
8. PHONO 1, 2, 3/LINE INPUT- Use these STEREO INPUT jacks to connect turntables using L/R RCA.
With PHONO 1 and 2, you also have the option of selecting line input, using #9 in conjunction with these
jacks. Adjust the STEREO CHANNEL SOURCE toggle on the middle panel of the KJ-7800 accordingly.
115
BOOTH OUT
MASTER OUT REC OUT
remote
key control
VIDEO OUT VIDEO IN
AV OUT AV INPUT STEREO INPUT MICROPHONE INSERTS
1234
PHONO
LINE
GND
G N D
L I FT
A C I N P U T
B a l a n ce d
UNBA L R E C O RD AUD I O A V 3 A V 2 A V 1 P H O N O 3 C D 3 C D 2 C D 1
P H O N O 2
L I N E
P H O N O 1
L I N E
1
2
57
8
6
4
3
Rear Panel Descriptions
and Functions

15
9. PHONO/LINE switches - When inputing turntables to the PHONO/LINE 1 or 2 STEREO INPUT jacks,
use the accompanying switch. Select the out position to toggle to PHONO and the in position to toggle to
LINE input type.
10. CD INPUT 1, 2, 3 - Use these dedicated inputs for CD players as source music with RCA L/R
cables. Adjust the STEREO CHANNEL SOURCE toggle on the middle panel of the KJ-7800
accordingly.
11. MICROPHONE INSERTS - These jacks are for connecting out-board effects units. The audio from
the MIC channels are routed out from the INSERT jacks to your out-board effects unit(s) and routed back
with the effects applied, using only a single cable. In order to use these jacks, you will need appropriate
TRS (tip = send, ring = return, sleeve = signal ground) insert cables.
12. VOLTAGE SELECTOR - This switch can change the voltage from 115V to 230V. Before your KJ-
7800 Pro is shipped from the factory, the switch is set to 115V. If you live in an area that has different
voltage requirements (230-240V), you MUST set it to 230V.
13. GROUND LIFT switch - A “ground loop” is a phenomenon where an unintended connection to ground
is made through an interfering electrical conductor, causing what is known as “60Hz hum.” A GROUND
LIFT switch adds a resistor between the ground and cable shield when switched on, effectively ridding the
system of hum.
14. GROUND TERMINALS - These TERMINALS are for connecting ground wires. If you are experiencing
line noise, attach wire from here to your other devices or similar suitable surface.
15. VIDEO OUT 1, 2, 3 - These jacks send graphics from input source player video output to video dis-
play device(s) such as TVs, TFTs and Monitors. Connect video cables from these VIDEO OUT jacks to the
VIDEO IN jacks on your video display device(s).
16. VIDEO IN 1, 2, 3 - These jacks allow the video component of CD+G, DVD, VCD and LD players to be
connected to the KJ-7800 Pro. Connect video cables from the VIDEO OUT jacks on your player(s) to these
VIDEO IN jacks.
17. REMOTE KEY CONTROL - This 1/8” jack is for connecting a REMOTE KEY CONTROL cable. Remote
Key Control allows you to make key changes at a distance from the Digital Key Controller on the KJ-7800.
115
BOOTH OUT
MASTER OUT REC OUT
remote
key control
VIDEO OUT VIDEO IN
AV OUT AV INPUT STEREO INPUT MICROPHONE INSERTS
1234
PHONO
LINE
GND
G N D
L I FT
A C I N P U T
B a l a n ce d
UNBA L
R E C O RD AUD I O A V 3 A V 2 A V 1 P H O N O 3 C D 3 C D 2 C D 1
P H O N O 2
L
I N E
P H O N O 1
L
I N E
16
15 17
12
9
10
11
13 14
Rear Panel Descriptions
and Functions Cont...

16
Advanced Operations
Using Digital Key Control
Use the Digital Key Controller to obtain the a musical key that matches the natural range of your voice. You
can increase or decrease the original or “NORMAL” note by 6 steps to cover the total musical range of 12
different keys. The Digital Key Controller indicator displays either 0 for NORMAL key or ± 6 on the DOWN
and UP sides. To step UP, or “#” press the right button. To step DOWN, or “b” press the left button. To
revert back to the original key, press the NORMAL button.
Digital Key Control
Assigning Digital Key Control to MIC and STEREO Channels
You can assign the Key Control to any channel you desire. To ASSIGN, you simply press the KEY button
located to the right of the fader on each channel you want the key changes to be applied to (both MIC and
STEREO inputs) and the key changes will take immediate effect. To REMOVE a key change from a channel,
simply depress the KEY button from that channel, and it is removed.
Remote Key Controlling of assigned STEREO and MIC inputs
It is also possible to control the input key of assigned channels with a REMOTE KEY CONTROL such as our
MARK-10 Key Control Microphone. Connect the 1/4” cable to a MIC input, and insert its 1/8” plug into
the REMOTE KEY CONTROL jack (pg 15, #17). Use the device’s Key Control buttons to modify the key.
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
-Flat (1/2 step down)
-Natural (Reset to "Normal" key)
-Sharp (1/2 step up)
-Flat (1/2 step down)
-Natural (Reset to “Normal” key)
-Sharp (1/2 step up)
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
OFF ON
KEY
CONT
.
-ON-
MIC.
OFF
ONCE MORE
#
KEY
CONT.
-ON-
MIC.
OFF
ONCE MORE
#
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
115
BOOTH OUT
MASTER OUT REC OUT
remote
key control
VIDEO OUT VIDEO IN
AV OUT AV INPUT STEREO INPUT MICROPHONE INSERTS
1234
PHONO
LINE
GND
G N D
L I FT
A C I N P U T
B a l a n ce d
UNBA L R E C O RD AUD I O A V 3 A V 2 A V 1 P H O N O 3 C D 3 C D 2 C D 1
P H O N O 2
L I N E
P H O N O 1
L I N E
1
2
57
8
6
4
3
Note: Key changes
made from a remote key
control microphone are
not exclusive to that mic
channel

17
Advanced Operations Cont...
Customizing Digital Echo settings (See Figure 1)
When using Digital Echo, you can customize the effect by adjusting the ECHO, REPEAT and DELAY controls.
First set the ECHO level control to 5. Then customize the effect with the REPEAT and DELAY level controls.
REPEAT adjusts the interval repetition of the echo effect. As more REPEAT is applied, more echo intervals
will be heard when using it and vice versa. DELAY adjusts length of each interval. As more DELAY is applied,
there will be more “space” between the starting and ending point of each echo. When the Digital Echo effect
is customized, adjust the ECHO level control as you would a master level control.
Digital Echo
Vocal Partner/Vocal Eliminator/Multiplex features v(See Figure 2)
The VOCAL button can switch between three modes
1. MULTIPLEX - With Multiplex media, music and lead vocals are panned hard left and right. With the first
press of this button, the red MULTIPLEX LED is lit, indicating that lead vocals have been removed. This feature
is also known as VOCAL CANCEL. The channel with music only is duplicated so it is heard in both left and right
channels. Some backing vocals will remain if there is overlap in the way they are recorded.
2. VOCAL PARTNER - Pressed two more times, the VOCAL button will illuminate the yellow LED to indicate
VOCAL PARTNER and “guide” or “lead” vocals will be activated. In this mode, the vocal layer will be cancelled
only as long there is Mic activity present. When there is no Mic/Line activity present, the vocal layer appears
for continuity. In other words, while you are singing, the vocal layer is cancelled, and when you are not singing,
the vocal layer is output. This mode is commonly used when a solo singer wants to simulate a duet, with the
KJ-7800 as the “partner.”
3. VOCAL ELIMINATOR - Press the VOCAL button until the center, green LED illuminates. With standard
recordings, you will be able to partially remove lead vocals to turn any recording into a Karaoke performance
or for remixing possibilities. It is not possible for such an effect to entirely remove vocals from a recording
because it operates by selecting certain frequencies that best represent the vocal range in the center of a
mix. Naturally, this removes other tones in these frequencies with it. To return to regular disc playback, press
this button until all three LEDs are unlit.
PROFESSIONAL KARAOKE MIXER WITH DSP KEY CONTROL AND CROSSFADER VIDEO TOGGLE
(BALANCED) (BALANCED)
VOCAL EFFECTS
VOCAL
GAIN GAIN GAIN GAIN GAIN GAIN GAIN
LEFT
RIGHT
TREBLE TREBLE TREBLE TREBLE
BASS
ECHO
CUE
KEY
BASS
ECHO
BASS
ECHO
BASS
ECHO
DOWN NORMAL UP
PARTNER ELIMI. MULTI.
(BALANCED)(BALANCED)
1 2 3 4
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
VIDEO SEL.
TALKOVER
ON
OFF
AUTO
CROSSFADER
MANUAL
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ON
CUE
KEY
ON
ONON
MIC 1 MIC 2 MIC 3 MIC 4
CROSSFADER
VIDEO TOGGLE VIDEO 1
CD 3
AV 3
VIDEO 2 VIDEO 3
PH 3
CD 2
AV 2
CD 1
AV 1
PH 1/LINE
STEREO 1
SIGNAL SIGNAL SIGNAL
STEREO 2
ASSIGN
CROSSFADER/VIDEO TOGGLE
ASSIGN
MASTER/L MASTER/R BOOTH
MASTER EQUALIZER
OUTPUT LEVEL DISPLAY
DIGITAL ECHO
DELAY
REPEAT
PHONES LEVEL
HEADPHONES
POWER
(BNC)
STEREO 3
PH 2/LINE
1 2 2 3
1 2 3
LIGHT
(DC 12V)
0
5
10 0
5
10 0
5
0
5
1010
0
5
10 0
5
10 0
5
0
5
1010
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-15 +15
0
-10 +6
0
-10 +6
0
-10 +6
0
-38 -30 -20 -10 -7 -4 -2 0 +2 +4 +7 +10
0
5
10
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
60 60 1K 4K 12K
0
5
10
0
5
10
0
5
10
0
5
10
0
5
10
5
0 10
5
0 10
REPEAT
ECHO
DELAY Increase Decrease
Digital
Echo
(Figure 1) (Figure 2)

18
Advanced Operations Cont...
Making an announcement during playback
To make an announcement during music playback, you most likely will want the music at a low enough volume
so that you can be heard over the music clearly. To do this, you use the TALK OVER function(pg 9, #9) when
the toggle is set to ON, the music volume is lowered considerably to allow for the announcement. When
done with the announcement, you switch the toggle back to OFF to return the music back to the level it was
originally. If you make several announcements, and want to avoid Talk Over On/Off switching, use the AUTO
mode. When in AUTO mode, the music volume level will automatically lower whenever there is mic activity
during an announcement and return when the announcement is over.
Note: Talk Over only works with Mic 1. If you try to use it when speaking into Mic 2, 3 or 4, it will
not work. Mic 1 is reserved as the KJ/DJ Mic.
Talk Over
Fine tuning music for precise room tuning
To fine tune the sound of your musical output, we included the 5-Band Graphic EQ. This EQ makes adjust-
ing the warmth or sharpness of your music a breeze. Frequency range settings are: 60, 250, 1k, 4k and
12k. The lows are 60 and 250, the mid is 1k and the highs are 4k and 12k. Below we have provided
some common general settings.
Channel Cueing
Channel cueing monitors the input signal(s) from the mix board to the headphones. When channel cueing,
you can select as many channels as you like to cue to headphones. To CHANNEL CUE, first make sure the
MASTER/CUE SELECTOR button is set to CUE. Then press the CUE button on each channel that you want
cued to the headphones. To REMOVE a channel from being cued, simply depress that channels CUE
button. To INCREASE or DECREASE the volume level to headphones, use the CUE LEVEL control located
next to the Cue/Master button. Note: It is recommended to only cue necessary channels, as too many
cued channels can be difficult to discern from one another. Also when channel cueing, any Digital Key
changes in effect will not be audible to the headphones.
Graphic Equalizer
Cueing
Clean Vocals Room Acoustic
Correction
Slight Power Boost Reducing Tape Hiss
(Playing)(Recording)
CUE MASTER
5
CUE
MASTER
Level
0 10 Increase Decrease
Phones Level

19
Master Cueing
Master Cueing will cue the MASTER OUTPUT to the headphones. This is commonly used to isolate the
audio signal to the headphones. Master cueing makes it possible to practice when “audible” music is not
permitted i.e. late night practicing at home. To MASTER CUE, make sure the CUE/MASTER button is set
to MASTER and adjust the CUE LEVEL control to a desired volume level. Note: When master cueing, press-
ing any channels individual Cue button will not affect output to the headphones as those buttons only work
when channel cueing.
Advanced Operations Cont...
Crossfading between sources
The crossfader allows you to “mix” or crossfade between two channels while toggling between corresponding
video outputs. To do this, you need to first ASSIGN the two channels to your CROSSFADER. On each side of
the CROSSFADER, there is an ASSIGN button. The LEFT ASSIGN button can assign either CHANNEL 1 or
2, while the RIGHT ASSIGN button can assign either CHANNEL 2 or 3. Once you have your desired channels
assigned, move their respective CHANNEL FADERS to an audible level, and slide the CROSSFADER back and
forth to crossfade.
Note: If you assign channel 2 on both sides, the crossfader will not crossfade.
Recording a Performance or Mix
To RECORD a mix or performance, connect a line-level patch cable from the RECORD OUT to the AUDIO IN
of a recording device.
Crossfader
Record
CUE MASTER
5
CUE
MASTER
Level
0 10 Increase Decrease
Phones Level
1
ASSIGN
2 2
ASSIGN
3
RECORD
L
R
CASSETTE/DAT/
CD BURNER

Troubleshooting
Problem Possible Cause(s) Solution(s)
No sound coming from
selected music source
No video output from
display devices
Voice cancel features are
not working properly
Talk Over feature lowers
microphone volume with
music volume
Crossfader isn’t fading
between channels
No channels or volume
being cued to phones
No audio being routed
though Insert channels
No echo applied to audio
High pitched squealing
occurs when using the
microphone
Source toggle switch is set
incorrectly
Gain or master levels are
turned down
External device(s) are either
not connected or not working
properly
Player source is not properly
connected to the KJ-7800
Video in, or the KJ-7800 out to
the display monitor
Video cable(s) are not properly
connected
Disc medium is not formatted
for video
Disc is not multiplexed
Microphone being used is not
plugged into Mic channel 1
Active source(s) are not
assigned to the crossfader
Cue buttons for channel(s) are
not selected
Cue level is turned down too
low
Cue/Master button is set to
“Master” preventing selectable
channel cueing
Cable(s) connected are not
designed for “Insert” use
Echo master level control is
turned down
Echo On/Off button is set to off
Channel specific echo level
control is turned down
Microphone is pointed to, or to
close to speakers
Treble level(s) are too high on
microphone channel(s)
Change source toggle to the
correct setting
Raise gain and master levels
to an appropriate level
Check external device(s)
connections and viability
Check all video connections in
from the player and to the
video monitor out from the
KJ-7800.
Reconnect cables firmly to
correct video jacks
Play a video formatted disc i.e.
CD+G, VCD, LD or DVD
Insert a multiplexed disc
Connect microphone to Mic
channel 1
Assign active sources to the
crossfader
Press Cue button on
channel(s) you want cued
Turn up cue volume level
Press Cue/Master button in for
“Cue” setting
Replace cables with proper
Insert cables
Turn echo master level control
up
Set echo On/Off button to On
Turn channel specific echo
level control up
Move microphone away from
speakers
Turn down treble level(s) on
microphone channel(s)
20