DIGISYNTHETIC K7 Operating manual

DSP Karaoke Processor
For more product information, please refer to the contents of disc with this device.
Product use guide
MIC
User Pres ets
FBE MIC Effe ct M us ic C /S .W S ur ro und
Main
MUS VOL/ EDI T MI C VO L/ Cu rs or EFF VOL/ Pa r. C oa rs e
Settin g
STO/
RCL(Hol d)
Exi t(Pr ess )
Loc k(Ho ld)
DSP Karaoke P rocessor

Front panel profile
1
Vers ion:V1.0
12498
357
6
17
Direct key of user presets
Microphone volume knob/Cursor adjust knob
Effect volume knob/Parameter coarse adjust knob
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
3 microphone input jacks were divided into two groups.
(MIC 1 and 2 in the group A, MIC 3 in the group B) ,each
input has a corresponding adjustment potentiometer.
Store/ recall preset key (store by press, recall by press
and hold).
Device setting key.
Arrow key of menu pages and parameters (pitch-shift
up and down of music just in the home menu).
Music volume knob/ EDIT / Exit &Lock with multiple
functions (twist the knob to adjust the volume of music
just in the home menu,otherwiseit adjusts the value of
parameter.EXIT by press, LOCK by press and hold).
USB interface(Type B).
Feedback eliminate enable or disable key.
Microphone menu key.
Effect menu key.
Music menu key.
Main outputs menu key.
Center/Subwoofer output menu key.
Surround output menu key.
Dot-Matrix LCD display, used to display a variety of
parameters adjustment information and infrared
remote receiving window.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER ( OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
≤2000m
The lightning flash with arrowhead synbol within an
equilateral triangle is intended to alert the user to the
presence of uninsulated dangerous voltage within the
product's enclosure, that may be of s ufficient m agnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operation and maintenace (servicing) instruction in the
literature accompanying the appliance.
Only us e i t bel ow the at tit ude o f 2 000 ms for sa fty
application.
Only use it in nontropical climate condition for safty
application.
Please read the basic protective measure as below before using.
1. Please read all the safety instruction before using the product.
2. This product must be earthed. If it should be malfunction or break
down, grounding provides a path of least resistance for electric
current to reduce risk of electric shock.
3. This product is equipped with a cord having an equipment-grounding
conductor and a grounding plug. The plug must be plugged into an
appropriate outlet that is properly installed and earthed in accordance
with all local codes and ordinance.
DANGER- Improper connection of the equipment-grounding
conductor can result in a risk of electric shock. Check with a
qualified electrician or serviceman if you are in doubt as to
whether the product is properly grounded. Do not modify the
plug provided with the product - if it will not fit the outlet, have
a proper outlet installed by a qualified electrician.
4. To reduce the risk of injury, close supervision is necessary when
the product is used near children.
5. Do not use this product near water-for example, near a bathtub,
washbowl, kitchen sink, in wet basement or near a swimming pool
or the lake.
6.
7. This product should be located so that its location or position does
not interfere with its proper ventilation.
8. This product should be located away from heat sources such as
radiators, heat registers or other products that produce heat.
9. The product should be connected to a power supply only of the type
described on the operation instructions or as marked on the product.
10. The power-supply cord of the product should be unplugged from
the outlet when left unused for a long period of time.
When unplugging the power-supply cord, do not pull on the cord,
but grasp it by the plug.
11. Care should be taken so that object do not fall and liquid are not
spilled into the enclosure through opening.
12. The product should be serviced by qualified service personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have been fallen, or liquid has been spilled into the
product; or
IMPORTANT S AFET Y INS TRUCTION
c) The product has been exposed to rain; or
d) The product does not appear to operate normally or exhibits a
marked change in performance; or
e) The product has been dropped or the enclosure damaged..
13. Do not attempt to service the product beyond that described in the
user-maintenance instructions.
All other servicing should be referred to qualified service personnel.
14. WARNING- Do not place objects on the product's power cord
or place it in a position where anyone could trip over, walk on
or roll anything over it. Do not allow the product to rest on or
to be ins ta lled ove r p ower c ords of any typ e. I mp rop er
installations of this type create the possibility of fire hazard
and/or personal injury.
15. The power-supply cord should be unplugged from the outlet when
the products is completely power off from the electric power sources
and electric networks .
MIC
User Preset s
FBE MIC Effe ct M us ic C /S .W S ur ro und
Main
MUS VOL/ EDI T MI C VO L/ Cu rs or EFF VOL/Pa r. C oa rs e
Settin g
STO/
RCL(Hold)
Exi t(Pr ess )
Loc k(Ho ld)
DSP Karaoke P rocessor
10 11 12 13 15 16
14
Whether used this product alone or connected to the power
amplifier, speaker or headset, excessive volume may cause
permanent hearing loss. Don't use for a long time in large or
any volume may cause discomfort. If you feel any hearing loss
or tinnitus, Please seek medical advice.

/
WARNING: SHOCK HAZARD - DO NOT OPEN
MADE IN CHINA
120Vac 60Hz 30W
IR REMOTE
HD Televison
DVD/VOD
2
11
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Rear panelprofile
Mains input
RS232C real-time PC control interface
S/PDIF coaxial input interface
Synchronous video output interface
3-way (background / input 1/ input 2) video input interface
Stereo Audio background input
Stereo Audio input 1
Stereo recording output interface
2 microphone input (A3 and B2) Jacks
Infrared remote port
S/PDIF optical input interface
Right channel of main output
Left channel of main output
Center output
Subwoofer output
System connection diagram
Audio source device
Optical
Coaxial
Video output
Input 1
Input 2
Background music
Main right output
Main left output
Center output
Professional power amplifier
Microphone
On-line control
IR Remote port
USB interface PC
Central control equipment
Infrared receiver
DVD(Input connection)
VCR(Input connection)
LD/CD(Input connection)
Recording equipment Active Subwoofer
Recording output
Background music
output 1
output 2
Subwoofer output
Microphone
MIC
Front panel
Front panel
17
18
Surround output right
Surround output left
Surround output right
Surround output left
29
35710
486
12 13 15 16 14 17 18
/
WARNING: SHOCK HAZARD - DO NOT OPEN
MADE IN CHINA
120Vac 60Hz 30W
IR REMOTE
Stereo Audio input 2

B G M F B X 0 0
B G M F B X 0 0
Product features
uThi s pro duc t i s the u se of 3 2-b it hi gh perfor man ce DSP and
AD/ DA, 48kH z s ampl ing ra te of pr ofessi onal d igit al multi -
Channel Karaoke processor.
uHigh quality professional vocal effects (Reverb, Echo, Reverb
+ Echo).
uAutomatic digital feedback inhibition, 5 optional.
u 12 level stereo music pitch-shifter.
uPa ramet ri c e qu alize r (c an b e s et t o l ow -s hel f / hi gh -shel f
filter):
uMusic (left / right) 15 bands, Microphone (A/B) 15 bands, Echo
10 b ands, Rev er b 10 ba nd s,The mai n ou tput (l ef t / r igh t)
10 bands , C ent er 10 b and s, Su bw oo fer 7 b an ds ,Su rr ound
(left/right) 7 bands.
uInputs, Outputs, Echo and Reverb have high-cut and low-cut
filters with 12dB / 18dB / 24dB / 48dB of Bessel / Butterworth /
Linkwitz-Riley
uEach inpu t and ou tput cha nnel is equ ipped wi th high qua lity
compressor.
uThe m usi c a nd th e output cha nne ls ar e equipp ed with delay
function
uEach output channel with matrix volume function
uAd ju stm en t of M us ic ( le ft / r ig ht) , Micr op hon e (A/B ), a nd
Main output (left / right) surround(left/right) can be Linked
u3 groups of audio and video input (background / input 1/ input
2), auto mati c backgro und mu sic (6 -15 s econ ds), 2 g roups o f
digital audio input (coaxial, optical fiber).
uVOD co mpute r i nt erfac e, wire d or wi reles s i nfrar ed r emote
control, connect to various equipment conveniently.
uComputer real-time control by RS232C and USB, all parame-
ters can be adjusted
uExtremely low noise floor.
uInitialize mode optional (Auto save or user presets 1-3).
uAutomatic switching two modes between sing and disco.
u128*64dotmatrix LCD display.
uMass storage: 15 user program.
Co nn ect th e po we r ca ble, t urn on th e po we r sw itc h, Lo go a nd
Model will be showed on screen, as follows:
Then display version and status, the device starts to load the data.
Initialize mode optional (Auto save or user presets 1-3), as shown
in the following figure:
Enter the boot screen after the completion of the loading.
The boot screen shows the current volume of microphone, music
an d eff ec t , t he f if th r ow i s high li gh ted ch ar acter s an d t he
si gn ifi ca nce a re a s f ollow s: the cu rr ent m us ic in pu t p or t, th e
output mode, the panel lock, function lock , music pitch, feedback
inhibition. As shown in the following figure:
Normal boot process
+
-
+
-
TOP KTV
Version *.**
Loading user 1
dual-echo hall
M I C: -25.0dB
MUS: -25.0dB
E F F: -12.5 dB
Music menu:
1 . Switch to a different page of the music menu by continuous
press [Music].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. The music parameters are as follows:
(1)Music input selection:
BGM(Background music), input 1, input 2, BGM-6 BGM-
15, coaxial (S/PDIF), optical (S/PDIF)
(2)The volume of music:
Mute, or -30dB to +12dB, step 0.5dB
(3)The volume of the left and right channels of music
Mute, or -30dB to +12dB, step 0.5dB
(4)Music equalizer (15 bands, left and right channels can be
adjusted separately):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz - 20200Hz
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011~3.595
(5)Low-cut and High-cut filters of music (left and fight
channels can be adjusted separately):
Frequency of Low-cut filter: 19.7Hz – 202Hz
Frequency of High-cut filter: 12100Hz - 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(6)Delay of Music (left and fight channels can be adjusted
separately):
On / off
0.0mS to 50mS, step 0.1mS
(7)Compressor of music (left and right channels can be
adjusted separately):
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ /
Soft-knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee typeⅤ
Threshold: -20dBu to 14.3dBu, step 0.5dB
Ratio: 1:1 to 16:1, step 2:1
(8)Noise gate of music (left and right channels can be
adjusted separately):
Off, or -90dB to 42dB, step 1dB
(9)Pitch-shifter of music (in the boot menu, press keys
[ ] and [ ] to adjust the pitch):
12 grads, b12 to #12, step 100 cent
(10)Gain trim of music inputs:
Analog inputs (BGM/IN1/IN2) : 0dB, +3dB or +6dB
Digital inputs (S/PDIF, coaxial or optical): -12dB to 0dB,
step 0.5dB
(11)Linking left and right channels of music
Yes / No
Microphone menu
1 . Switch to a different page of the microphone menu by
continuous press [MIC].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4, Microphone parameters are as follows:
(1) Microphone volume:
Mute, or -30dB to +12dB,step 0.5dB
(2) The left and right microphone volume:
Mute, or -30dB to 0dB,step 0.5dB
(3) The volume of direct sound:
Volume: 0% to 100%, step 1%
Phase inverter: 0°/ 180°
(4) Microphone equalizer (15 bands,group A and B can be
adjusted separately):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011 to 3.595
(5) Low-cut and High-cut filters of music (group A and B can
be adjusted separately):
Frequency of Low-cut filter: 19.7Hz – 202Hz
Frequency of High-cut filter: 12100Hz - 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(6) Compressor of microphone (left and fight channels can be
adjusted separately):
3
~

Threshold: -20dBu to 14.3dBu, step 0.5dBu
Ratio: 1:1 to 16:1, step 2:1
(8) Linking channel L and R of main output:
Yes / No
Bandwidth: 0.011 to 3.595
(3) Low-cut and High-cut filters of main output (channel L and
R can be adjusted separately):
Frequency of Low-cut filter: 19.7Hz – 202Hz
Frequency of High-cut filter: 12100Hz - 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(4) Volume of main output matrixes (channel L and R can be
adjusted separately):
Volume of music: Mute, or -30dB to 0dB, step 0.5dB
Volume of direct sound: Mute, or -30dB to 0dB, step 0.5dB
Volume of echo: Mute, or -30dB to 0dB, step 0.5dB
Volume of reverb: Mute, or -30dB to 0dB, step 0.5dB
(5) Phase inverter of main output (channel L and R can be
adjusted separately):
0°/ 180°
(6) Delay of main output (channel L and R can be adjusted
separately):
On / Off,
0.0mS to 7mS, step 0.1mS
(7) Compressor of main output (channel L and R can be
adjusted separately):
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ / Soft-
knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee type Ⅴ
1 . Switch to a different page of the center menu by continuous
press [C/S.W].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 .Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. Center output parameters as follows:
(1) Center output volume:
Mute, or -30dB to +6dB, step 0.5dB
(2) Center output equalizer (10 bands):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011 to 3.595
(3) Low-cut and High-cut filters of center output:
Frequency of Low-cut filter: 19.7Hz – 303Hz
Frequency of High-cut filter: 2520Hz – 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(4) Volume of center output matrixes:
Volume of music: Mute, or -30dB to 0dB, step 0.5dB
Volume of direct sound: Mute, or -30dB to 0dB, step 0.5dB
Volume of echo: Mute, or -30dB to 0dB, step 0.5dB
Volume of reverb: Mute, or -30dB to 0dB, step 0.5dB
(5) Phase inverter of center output: 0°/ 180°
(6) Delay of center output:
On / Off,
0.0mS to 21mS, step 0.1mS
(7) Compressor of center output:
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ /
Soft-knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee type Ⅴ
Threshold: -20dBu to 14.3dBu, step 0.5dBu
Ratio: 1:1 to 16:1, step 2:1
Center menuoutput
Subwoofer menuoutput
Threshold: -40dBu to 0dBu, step 0.5dBu
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ / Soft-
knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee type Ⅴ
Ratio: 1:1 to 16:1, step 2:1
(7) Noise gate of microphone (group A and B can be adjust
separately):Off, or -90dB to 42dB, step 1dB
(8) Linking group A and B microphone:Yes / No
(9) Feedback inhibition of microphone: off ,5 grads, level 1 to 5
Effect menu
1 . Switch to a different page of the effect menu by continuous
press [Effect].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. Echo parameters as follows:
(1) Echo volume: Mute, or -30dB to 0dB, step 0.5dB
(2) Phase inverter: 0°/ 180°
(3) Echo mode: mono echo / stereo echo / dual echo
(4) Echo to Reverb: On / Off
(5) Delay time of ECHO 1: 100ms to 600ms, step 5ms
(6) Depth of ECHO 1: 0% to 100%, step 1%
(7) Pre-delay of ECHO 1: 0ms to 200ms, step 1ms
(8) Delay time of ECHO 2: 100ms to 600ms, step 5ms
(9) Depth of ECHO 2: 0% to 100%, step 1%
(10) Pre-delay of ECHO 2: 0ms to 200ms, step 1ms
(11) Echo equalizer (10 bands):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011 to 3.595
(12) Low-cut and High-cut filters of Echo:
Frequency of Low-cut filter: 19.7Hz – 1000Hz
Frequency of High-cut filter: 8000Hz - 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
5. Reverb parameters as follows:
(1) Reverb volume: Mute, or -30dB to 0dB, step 0.5dB
(2) Phase inverter: 0°/ 180°
(3) Type of reverb: Off/ Room / Small Hall / Hall / church
/Cathedral/Vocal
(4) Pre-delay of Reverb: 0ms to 250ms, step 10ms
(5) Reverb time: 0.5s to 6s, step 0.1s
(6) Reverb equalizer (10 bands):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011 to 3.595
(7) Low-cut and High-cut filters of Reverb:
Frequency of Low-cut filter: 19.7Hz – 1000Hz
Frequency of High-cut filter: 8000Hz - 20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
6. Effect parameters as follows:
(1) Effect volume: Mute, or -30dB to +6dB, step 0.5dB
Main output menu
1 . Switch to a different page of the main output menu by
continuous press [Main].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. Main output parameters as follows:
(1) The left and right channel of main output volume:
Mute, or -30dB to +6dB, step 0.5dB
(2) Main output equalizer (10bands, channel L and R can be
adjusted separately):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
Gain: -15dB to +12dB, step 0.1dB
4
1 . Switch to a different page of the subwoofer menu by
continuous press [C/S.W].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. Subwoofer output parameters as follows:
(1) Subwoofer output volume:
Mute, -30dB to +10dB, step 0.5dB

Options [Initial] of the menu [Setting], to configure the initialized
mode, there are four options, Auto save and user presets 1-3.
Initialized mode selection
5
Gain: -15dB to +12dB, step 0.1dB
Bandwidth: 0.011 to 3.595
(3) Low-cut and High-cut filters of subwoofer output:
Frequency of Low-cut filter: 19.7Hz – 1000Hz
Frequency of High-cut filter: 35.1Hz – 2000Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(4) Volume of subwoofer output matrixes:
Volume of music: Mute, or -30dB to 0dB, step 0.5dB
Volume of direct sound: Mute, or -30dB to 0dB, step 0.5dB
(5) Phase inverter of subwoofer output: 0°/ 180°
(6) Delay of center output:
On / Off,
0.0mS to 21mS, step 0.1mS
(7) Compressor of subwoofer output:
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ /
Soft-knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee type Ⅴ
Threshold: -20dBu to 14.3dBu, step 0.5dBu
Ratio: 1:1 to 16:1, step 2:1
(2) Subwoofer output equalizer (7 bands):
Type: PEQ/ Low-shelf / High-shelf
Frequency: 19.7Hz to 20200Hz
(4) Press key [ ] to cancel, key [ ] to confirm.
2. Preset recall
There are two ways to recall the user preset,
Ways1: Press keys [1],[2],[3] to recall the program 1-3 quickly
and directly.
Ways2:To recall more other user presets, the steps as follows:
(1) Press and hold the Key [STO/RCL], to enter the program
recalling process, a dialog as follows,
(2) Twist knob [EDIT] to select the sequence number of stack
to be recalled, the follow character indicates the status of
stack, “Used” or “Empty”.
(3) Press key [STO/RCL] again to confirm the sequence
number, tip recalling failed and exit the recalling process if
the stack is “Empty”. Otherwise forward to the final
confirmation if the stack is “Used”, dialog as shown below.
(4) Press key [ ] to cancel, key [ ] to confirm.
1
Recall
user preset 1 ? “used”
Recall user preset 1 ?
“ ” : No “ ”: Yes
Surround Menu
1 . Switch to a different page of the surround menu by continuous
press [Surround].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4, the surrounding parameters are as follows:
(1) surround (left / right) volume:
Mute, -30dB~+6dB, step 0.5dB
(2) 7 bands PEQ(left / right):
Type:
Frequency: 19.7Hz~20200Hz
Gain: -15dB~+12dB, step 0.1dB
Bandwidth: 0.011~3.595
(3) High/low cut (left / right) :
Low cut frequency: 19.7 ~202Hz Hz
High frequency: 12100Hz~20200Hz
Roll-off of filters: 12dB, 18dB, 24dB, 36dB
Type of filters: Bessel, Butterworth, Linkwitz-Riley
(4) surround (left / right) matrix volume:
Music: Mute, -30dB~0dB, step 0.5dB
Direct sound: Mute, -30dB~0dB, step 0.5dB
Echo: Mute, -30dB~0dB, step 0.5dB
Reverberation: Mute, -30dB~0dB, step 0.5dB
(5) surround (left / right) phase:
0 / 180
(6) surround (left / right) delay:
On / off
0.0mS~21mS, step 0.1mS
(7) surround (left / right) compressor:
Off / Hard-knee / Soft-knee typeⅠ / Soft-knee type Ⅱ /
Soft-knee type Ⅲ / Soft-knee type Ⅳ / Soft-knee type Ⅴ
Threshold: -20dBu to 14.3dBu, step 0.5dBu
Ratio: 1:1 to 16:1, step 2:1
(8) surround link:
Yes / no
output
PEQ/ Low-shelf / High-shelf
Setting menu
1 . Switch to a different page of the setting menu by continuous
press [Setting].
2 . Rotary knob [MUS VOL/EDIT] adjust the parameters, some
parameters can be rough adjusted by rotating the knob [EFF
VOL/Par. Coarse]
3 . Key[ ]and[ ] switch with a page of the cursor position, adjust
other parameters (or with knob [MIC VOL/Cursor] for quickly
adjusted the cursor position).
4. Setting parameters as follows:
(1) Initialized mode:
Auto save or User preset 1-3
(2) Limits of maximum volume:
Music: Mute, or -30dB to +12dB, step 0.5dB
Microphone: Mute, or -30dB to +12dB, step 0.5dB
Effect: Mute, or -30dB to +6dB, step 0.5dB
Main output: Mute, or -30dB to +6dB, step 0.5dB
Center output: Mute, or -30dB to +6dB, step 0.5dB
Subwoofer output: Mute, or -30dB to +10dB, step 0.5dB
(3) Limits of Gain of equalizer:
Music: +6.0dB to +12.0dB, step 0.1dB
Microphone: +6.0dB to +12.0dB, step 0.1dB
Effect: +6.0dB to +12.0dB, step 0.1dB
Main output: +6.0dB to +12.0dB, step 0.1dB
Center output: +6.0dB to +12.0dB, step 0.1dB
Subwoofer output: +6.0dB to +12.0dB, step 0.1dB
(4) Automatic recovery of music pitch:
On / Off
Threshold: -30dB to 0dB, step 0.5dB
Time: 0 to 60S
(5) Sing and to disco mode switch:
Auto / Sing / Disco
Threshold: -30dB to 0dB, step 0.5dB
Time: 0 to 60S
Preset storage / recall
1. Preset storage
(1) Press Key [STO/RCL] to store Preset, then a confirmation
dialog appears, as shown below:
(2) Twist the knob [EDIT] to select the sequence number of
stack to be stored, the follow character indicates the status
of stack,“Used” or “Empty”.
(3) Press key [STO/RCL] to confirm, there will be two
situations:
If the status of stack is “Empty”, then will store directly to
finish the steps, Else if the status of stack is “Used”, a
confirmation dialog will appears again, as shown below:
Save to
User preset 1? “Empty”
1
Cover user preset 1 ?
“ ” : No “ ”: Yes

protection of the amplifier and speaker. Avoid destroy the sound
field because setting the volume is too large.
For example:
When the microphone parameter is set to -10dB, then the upper
limit value of the microphone volume is -10dB, when using the
microphone volume knob or remote control to adjust the
microphone volume, the maximum output volume is -10dB.
Automatic recovery of music pitch:
1.When users indue to their own physiological can not reach the
original song's pitch, to adjust the pitch of musical
accompaniment manually;
2.When detect the existing song ended, the next song will
automatically return to the original pitch.
3.When you do not need to automatically recover, this function
can be disable in device settings.
4.By setting the "threshold" and "time", making the functionmore
practical use.
Panel lock, Function lock
1. Panel lock: Press and Hold the Key [Lock]which it combined
with the knob [MUS VOL / EDIT] to enable the panel lock, Do
it again to unlock.
2. Function lock: Just set up in the GUI (Graphical User
Interface). By Menu ->System -> Lock.
Restore to factory settings
Warning: The operation will clean all the data on the device.
Press and hold the keys [Music]+ [Main] , Turn on the AC power
switch, until the LCD monitor shows "RESET...", wait a moment
so that the monitor shows “Succeed”, then device will recovery to
factory settings.
Infrared remote
Simple and easy to use remote control functions, the use of
manual operation. Simple parameter adjustment, make you easy
and fast adjust the frequent parameter settings. As the following
table.
Infrared remote keys description
FBE
Remote code table
The code is hexadecimal, user code is
82H.
Buttons Codes
(Hex) Buttons Codes
(Hex)
1
4
7
3
6
9
2
5
8
FBE
BGM
IN 1
COAXIAL
OPTICAL
PRESET/ USER
1
00
01
04
03
02
05
06
0A
2
3
4
5
6
7
8
9
Mic+
09
08
0B
0C
0D
10
0F
0E
11
Mic-
Music+
Effect+
Effect-
b
#
SUB+
17
12
18
13
19
16
15
14
1B
CENT+
SUR+
1D
1E
1F
CINEMA/KTV
CINEMA/KTV
Mic+
07
IN 1 IN 2
BGM
IN 2
COAXIAL
Music-
Music+
Music-
Effect+
Effect-
PRESET/ USER
OPTICAL
b#
SUB+
Mic-
SUB-
SUB-
CENT -
SUR-
CENT+ SUR+
CENT - SUR-
Remote control
6
IR Remote description
As shown in the following schematic, the IR remote port has 5
pins, which have 2 input signal lines and 2 ground lines. In
practical applications, only one of the two signal lines is required.
Ground
Two signal inputs
BGM, IN 1, IN 2 Select analog input interface for music,
Background/Input 1/input 2
COAXIAL, OPTICAL Select digital input interface (S/PDIF) for
music
1-9 Press these keys to recall the user program
1-9 directly
CINEMA / KTV Function of the key is not defined. Device will
ignore it
MIC+, MIC- Increase or decrease the volume of Microphone
MUSIC+, MUSIC- Increase or decrease the volume of Music
EFFECT+, EFFECT- Increase or decrease the volume of Effect
b, ㄆ, # Adjust the pitchof music,eg: Falling / Original
/ Raising
SUB+, SUB- Increase or decrease the volume of Subwoofer
CENT+, CENT- Increase or decrease the volume of Center
SUR+, SUR- Function of the key is not defined. Device will
ignore it
Keys name Keysfunction
FBE Enable or disable feedback inhibition function
PRESET / USER Function of the key is not defined. Device will
ignore it
Initialized mode
Function description
Auto save
User presets 1-3
The function of this option is to automatically
save all settings of user, shut down the device
or suddenly power drop, then automatically
reload to the last status. Especially suitable
for situation that is tuning or often need to
change the device settings.
Regardless of the status of the shutdown, the
corresponding user preset (1 to 3) will be
automatically recalled on reboot. This function
suitable for situation of the KARAOK, in
order to reduce the workload of tuner.
Output mode (Sing / Disco)
1. Function description:
(1) Each output port (Main left, Main right, Center, Subwoofer)
has two sets of equalizer and volume setting, refer to sing
mode and disco mode respectively;
(2) These two modes can be switched manually or
automatically, its working principle is that when all the
MIC input has no signal and reach the setted time, the
output will be switched to the disco mode. When any one of
the mic inputs is activated, working mode switched back to
the sing.
(3) The range of threshold that a signal from microphone inputs
can be considered effectively is: -30dB to 0dB, range of
time is: 0s to 60s.
2. Setting process:
(1) Select for sing mode manually, and set the parameters for
the equalizer and volume,
(2) Select for disco mode manually, and set the parameters for
the equalizer and volume,
(3) Set an appropriate threshold and time for the microphone,
and choose the auto mode, and then device will work well.
Limits of maximum Volume and Gain:
1. Function description:
To make the volume output in a certain range, the effective
Return to the root menu
Press the Key [Exit] return the root of menu, or automatically
return to the root menu when no operation of button or knob after
180 seconds approximately.

7
5. Please confirm that computer and device have been properly
connected.Launch the GUI application, click Button “Online” in
the menu,and select“USB” or “COM” to connect the device,
which depends on how you actually connected the interface.
GUI software Notes
Available online computer
Available online interface ACPower Grounding
Ground
Accessories
Description Quanti ty
RS232C Cable 1
USB Cable 1
Product software CD 1
Product us age guide (This document) 1
Remote 1
GUI software installation guide
1.Put into the disk of accessories, open the CD-ROM and launch
the application“Setup.exe” for installation.
2. The installation window appears, click the Next to continue.
3. Software will ask you to choose the installation path, and then
click next to continue.
4. Follow the wizard until the installation is complete.
All the panel buttons and the knobs cannot be controlled when the
device is connected to the GUI.
No need to select which one serial port, software can
automatically search.
USB driver free.
GUI software can set all the parameters of the device.
Please refer to the help documentation for the GUI software
operation instructions.
Necessary online control tips:
Before the user is online control operation, be sure to read the
following notes in detail:
Otherwise it will increase the risk of abnormal conditions such as
offline, computer damage, and so on when you are online:
1.In order to ensure the normal operation of the device, please
firstly check AC power if in the range of the device.
2.If conditions permit, AC power outlet needs to have the
grounding connection settings. And use a grounding power
connected to the computer and the device.
3.The same model and the same version of GUI software don't
repeatedly install.
4. All of the GUI software don't install in the same directory.
5. To avoid the use in strong interference and strong magnetic
field environment.
6.The following acts may lead to the failure of online control, and
even damage the device or your computer:
1) Before the implementation of online, Please do not plug in or
pull out the line connected the device after it is turned on.
2) After the success of online, please do not move the computer,
device and control line.
3) After the success of online, please do not operate by panel;
including touching any keys on the device.
4) After the success of online, please do not go to plug the device
or personal computer online connector.
5) After the success of online, please do not open the same type
of online control software in the computer.
6) After the success of online, please do not use a computer to
control many different device.
7. Please refer the important security matters content from the
manual.

Frequent troubleshooting guidelines
1.Check the power cable is connected correctly.
2. Check the fuse is burned.
3. Check the power switch is closed.
GUI cannot be online with device
1. Check the communication cable is connected correctly
2. If you use the RS232C port in the back of the device, make sure that USB cable is not connected.
3.Reopen the GUI software and reconnect the communication cable.
1. Check all the input signals are normal.
2. Check all the output connection is correct, include power amplifier and loudspeakers.
3. Restart the device.
4. Restore to factory status, Please refers to the relevant chapter above.
5. Try to restart the device many times is still unable to solve the fault, please contact the
distributor to resolve
No sounds output
LCD monitor no display, light-
emitting diodes (LED)are dark
LCD displays fault tips,“error xx”
LCD displays fault tips:“Storage
error”
LCD display fault tips:“DSP1 error”
1.Restart the device.
2.Restore to factory status, Please refers to the relevant chapter above.
3.Try to restart the device many times is still unable to solve the fault, please contact the
distributor to resolve
1. Restart the device
2. Try to restart the device many times is still unable to solve the fault, please contact the
distributor to resolve
1. Restart the device
2. Try to restart the device many times is still unable to solve the fault, please contact the
distributor to resolve
Issues
Troubleshooting method
8

9
Above technical changes without notice
Technical specification
Music Part
SNR Flat,Original pitch 107dB(analog), 114dB(digital)
THD+N Output 1Vrms @ 1 kHz 0.002%(analog), 0.001%(digital)
Frequency Response 20Hz-20kHz±0.5dB
Main / Center/Surround output
20Hz-2000Hz ±0.5dB
Subwoofer output
Maximum Input Level Analog input: BGM / IN1 / IN2 4Vrms
Digital input: Optical / Coaxial 0dBFS = 2Vrms
Maximum Output Level 4Vrms
Gain Analog input: BGM / IN1 / In2 -30dB to +18dB
Digital input: Optical / Coaxia -30dB to +12dB
Pitch-Shifter b12 to #12, 100 cent (half-tone) pre step
Microphone Part
SNR Effect bypass 99dB
THD+N Effect bypass, 0.006%
Output 1Vrms @1kHz
Frequency Response Main / Center/Surround output 20Hz-20kHz ±0.5dB
Subwoofer output 20Hz-2000Hz ±0.5dB
Sensitivity / Impedance Front Inputs (3 Chs) 31mVrms/3.3kΩ
Back Inputs(2 Chs) 44mVrms/10kΩ
Gain Front Inputs (3 Chs) 30dB to 42dB
Back Inputs (2 Chs) 39dB
Video Part
Input / Output 3 inputs and 1 output, synchronously switching with music
Sensitivity / Impedance 1Vpp/75Ω
Parametric EQ Music: 15 bands, Mic: 15
bands, Main: 10 bands, Center:10
bands, Subwoofer/Surround: 7 bands,
Effect: 10 bands
Freq.：19.7Hz-20.2kHz,
19.7Hz-2000Hz (Subwoofer)
Bandwidth (Oct)：0.011-3.595 Gain：-15dB to +12dB
Group A & B or channel L & R, can be adjusted independently
Parametric EQ & HPF/LPF
HPF/LPF HPF Freq.：19.7Hz-202Hz LPF Freq.：12.1kHz-20.2kHz
Type： Flat/Bessel/Butterworth Roll-off：12dB,18dB,24dB,36dB,48dB
/Linkwitz-Riley
Other description
Remote 1 Wireless Infrared receiver, 1 IR Remote port (5 pins, type S socket)
Online control port 1 RS232C port (9 pins, type D-SUB, female), 1 USB port (type B, driver free)
Mains In AC 120V 60Hz
Power Consumption 21.5W
Fuse Size T1AL/250VAC
Net weight 3.5kg
Dimensions (L×W×H) 482×158×45(mm)

10
Signal Flow Graph
MI C-A IN
MU SIC-L IN
MI C-B IN
MI C VOL
15 P EQS
EQ O PTIMIZE
CO MPRES SOR
FB I NHIBITION
HP F/LPF
MI C VOL
15 P EQS
EQ O PTIMIZE
CO MPRES SOR
FB I NHIBITION
HP F/LPF
NO ISE GATE
MU SIC VOL
ST EREO PITCH
-S HIFTER
HP F/LPF
NO ISE GATE
MU SIC VOL
ST EREO PITCH
-S HIFTER
HP F/LPF
NO ISE GATE
NO ISE GATE
MU SIC-R IN
DI RECT SOUND
VO LUME/PHAS E
EF FECT VOL
HP F/LPF
10 P EQS
EC HO
EF FECT VOL
HP F/LPF
10 P EQS
RE VERB
15 P EQS
CO MPRES SOR
15 P EQS
CO MPRES SOR
MATRIX
VO LUME
PH ASE INV ERT
VO LUME
HP F/LPF
10 P EQS
DE LAY
CO MPRES SOR
PH ASE INV ERT
VO LUME
HP F/LPF
10 P EQS
DE LAY
CO MPRES SOR
10 PEQS
DELAY
COMPRESSOR
PH ASE INVERT
VO LUME
HP F/LPF
7 PE QS
DE LAY
CO MPRES SOR
MA IN-L
OU T
MA IN-R
OU T
CENTER
OUT
SU RROUN D-R
OU T
PH ASE INV ERT
VO LUME
HP F/LPF
PH ASE INVERT
VO LUME
HP F/LPF
7 PE QS
DE LAY
CO MPRES SOR
SU BWOOFER
OU T
PH ASE INVERT
VO LUME
HP F/LPF
7 PE QS
DE LAY
CO MPRES SOR
SU RROUN D-L
OU T