VocoPro Stereo Amplifier DA 3700 User Manual

DA-3700  
MIC 1  
MIC 2  
VOL  
LOW  
-15  
HIGH  
-15  
REPEAT  
DELAY  
ECHO  
ST MONO  
0
10  
+15  
+15  
0
10  
0
10  
Digital Karaoke Mixing  
Amplifier with Key Control  
O W N E R ’ S M A N U A L  
 
Safety Instructions  
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.  
CAUTION  
RISK OF SHOCK  
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.  
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.  
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.  
Explanation of Graphical Symbols  
The lightning flash & arrowhead  
symbol, within an equilateral triangle,  
is intended to alert you to the  
presence of danger.  
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.  
The exclamation point within an  
equilateral triangle is intended to alert  
you to the presence of important  
operating and servicing instructions.  
WARNING  
To reduce the risk of fire or electric shock, do  
not expose this unit to rain or moisture.  
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.  
1. Read Instructions - All the safety and operating  
instructions should be read before the appliance is  
operated.  
15. Nonuse Periods – The power cord of the appliance  
should be unplugged from the outlet when left unused  
for a long period of time.  
2. Retain Instructions - The safety and operating  
instructions should be retained for future reference.  
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.  
3. Heed Warnings - All warnings on the appliance and in  
the operating instructions should be adhered to.  
17. Damage Requiring Service – The appliance should  
be serviced by qualified service personnel when:  
4. Follow Instructions - All operating and use  
instructions should be followed.  
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.  
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.  
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.  
7. Carts and Stands - The appliance should be used  
only with a cart or stand that is recommended by the  
manufacturer.  
Note:  
7 A. An appliance and cart combination  
should be moved with care. Quick stops,  
excessive force, and uneven surfaces may  
cause an overturn.  
To CATV system installerʼs (U.S.A.): This reminder is  
provided to call the CATV system installerʼs 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.  
1
 
FCC INFORMATION (U.S.A.)  
CAUTION:  
1. IMPORTANT NOTICE: DO NOT MODIFY THIS  
READ THIS BEFORE OPERATING YOUR UNIT  
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.  
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.  
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. Do not operate the unit upside-down.  
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  
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.  
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:  
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.  
Relocate either this product or the device that is being  
affected by the interference.  
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.  
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.  
10. To prevent lightning damage, pull out the power cord  
and remove the antenna cable during an electrical storm.  
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.  
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  
Voltage Selector (General Model Only)  
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.  
Be sure to position the voltage selector to match the  
voltage of your local power lines before installing the  
unit.  
240V  
120V  
2
 
Welcome….  
And Thank you for purchasing the DA-3700 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: 1 (800) 678-5348  
TEL: (909) 593-8893  
FAX: (909) 593-8890  
VocoPro Company Email Directory  
Customer Service & General Information  
Tech Support  
Remember Our Website  
products, packages and promos. And while youʼre there donʼt 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  
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  
Example  
30  
Quiet library, Soft whispers  
40  
50  
60  
70  
80  
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:  
Example  
Level  
Subway, Motorcycle, Truck traffic, Lawn Mower  
Garbage truck, Chainsaw, Pneumatics drill  
Rock band concert in front of speakers  
Gunshot blast, Jet plane  
90  
100  
120  
140  
180  
Rocket launching pad  
-Information courtesy of the Deafness Research Foundation  
4
 
Specifications  
MIC  
1
MIC  
2
VocoPro DA-3700  
VOL  
LOW  
-15  
HIGH  
-15  
REPEAT  
DELAY  
ECHO  
ST MONO  
Digital Karaoke Mixing Amplifier with Key Control  
0
10  
+15  
+15  
0
10  
0
10  
Maximum Output  
120W + 120W at 4-Ohm  
100W + 100W at 8-Ohm  
S/N ratio  
THD  
65dB (mic on) 70dB (mic off)  
.0.5%  
Frequency Response  
Noise Level  
20Hz--20KHz  
<10mV  
±12dB  
Tone Balance Control  
Balance Input  
Split Level  
±1.5dB  
>35dB  
Mic Sensitivity  
Mic Frequency Sound  
MIC Tone  
<30mV  
100Hz 2.5kHz  
~
Treble  
±10dB  
±10dB  
Bass  
Supply Voltage  
110V-220V  
Features  
• 9-step Digital Key Control  
• 2 Unbalanced 1/4” Microphone Inputs with +20dB Gain Pad, Volume, Balance, Echo and 3-Way EQ Controls on each Channel  
• 2 Switchable RCA A/V Inputs for Source Players (DVD, CD+G, VCD, etc)  
• 3 RCA Audio Outputs (Record, Line and Microphone) for Output to Recording Devices, Amplifiers and Mixers  
• 2 RCA Video Inputs/Output for Video Connection to a TV or Monitor Device  
• Effect Loop for Integration of Outboard Effect Units  
• Master Volume, Balance and Low/Mid/High Frequency Controls for input source music  
• Master Lo/Hi frequency, Repeat and Delay Echo controls  
• Master Microphone volume control  
• Remote Key Control input  
• 2-Way Binding Post Speaker Outputs  
• Remote Control  
• 10V-220V Compatible  
• Dimensions: 16” (W) x 14” (D) x 55” (H)  
5
 
Getting connected  
VocoPro DKP-10G  
CD/DVD player connection  
You can simultaneously connect up to two CD/DVD players  
to the DA-3700PRO’s switchable A/V channels. Using the  
DA-3700PRO’s remote or front panel, you can easily switch  
between channel A and Channel B.  
VocoPro DVG-555K  
Audio  
DVG-555K  
5
DISC KARAOKE MIXER/PLAYER  
DISC  
1
DISC  
2
DISC  
3
DISC  
4
DISC  
5
ALL  
R
Connect the stereo (L/R) RCA cables from the Output of your  
CD/DVD player to the VCD/CD (INPUT A) or the DVD (INPUT  
B) L/R inputs on the rear panel of the DA-3700PRO.  
CD+G  
V
I
D
E
O
PAL/NTSC  
L/R  
DISPLAY  
POWER  
VOL  
1
VOL  
2
ECHO  
MIC BASS  
MIC TREBLE  
1
2
3
4
5
6
7
8
9
0
#
ON  
/
OFF  
MIC  
1
MIC  
2
0
10  
0
10  
0
10  
-10  
+10  
-10  
+10  
Video  
Connect the video RCA cable from the Video Output of your  
CD/DVD player to the VIDEO INPUT on the rear panel of the  
DA-3700PRO.  
TV/Display device connection  
Display Device  
Vocopro LTV-5  
The DA-3700 has two video inputs and two video outputs.  
Video inputs A and B correspond to the two input channels.  
The video that is being input into VIDEO input A will only play  
when input channel A is active. Likewise, the video that is being  
input into VIDEO input B can only be viewed if input channel B is  
active.  
CH  
+
MENU  
VOL  
+
CH  
-
VOL  
-
TV/AV  
POWER  
Both Video Outputs send the same picture simultaneously to  
two different TVs or display devices.  
Connect the Video RCA cable from the VIDEO output on the DA-  
3700PRO to the Video Input on your TV or display device.  
NOTE: Switch between Inputs A and B either by using the A/B  
buttons on the DA-3700PRO’s remote or on the front panel.  
6
 
Getting connected (cont.)  
Amplifier, mixer and external sound system connections  
Music and Vocals  
The DA-3700PRO’s LINE OUT (RCA) jacks can be used to connect to a second power amplifier, an external sound system or mixing  
device. Note: The DA-3700 offers optimum performance when used as an amp for home sound systems and smaller performance  
systems and speakers. See our VP Series power amplifiers for more professional applications at VocoPro.com or your nearest  
VocoPro dealer.  
Use L/R RCA audio cables to connect to an amplifier, mixer or other external sound system. Connect from the L/R LINE OUTPUT  
on the DA-3700PRO to the L/R audio input on your amp, mixer or sound system.  
Outputting Vocals Independently  
You can output vocals independently from the DA-3700PRO into a mixer from the L/R RCA MIC Outputs. Connect the L/R RCA  
cable from the MIC OUTPUT to an Audio Input on your mixer.  
Mixer/amp  
External speaker connection  
You can connect directly to speakers using either MDP (banana plug) speaker cables or standard speaker wires. Be sure to correctly  
match the polarities (+/-). Connect speakers rated no lower than 4-Ohms to the DA-3700 Pro. Please do not try to connect more  
than one speaker per channel, as the load may exceed the amplifiers handling capacity, causing it to overload.  
If using standard speaker wire, unscrew each plastic bind until you are able to see an interior hole for speaker wire (this is easier to  
locate when viewing from a side angle). Slide the speaker wires into the slots and tighten the plastic binds to tighten them in place. Be  
sure there is no insulation on the speaker wire preventing conductivity.  
Speakers  
T
7
 
Getting connected (cont.)  
Mic(s) connection  
A mic with Remote Key Control  
T
Connect the Remote Key Control cable into the KEY CONTROLLER jack on  
the rear panel of the DA-3700PRO.  
Using a mic cable with a 1/4” end, connect the mic  
to either of the DA-3700PRO’s microphone inputs.  
Vovopro DKC-100  
Effects Loop connections  
Source Music (Music from a DVD or CD player)  
By using the built-in Effects Loop you can add ef-  
fects such as a professional Digital Key Controller  
to the source player’s music without compromising  
the quality of the original signal. To use the effects  
loop connect an RCA cable from the DA-3700PRO’s  
EFFECTS LOOP L or R OUT jack to the effects unit  
input. Then connect an RCA cable from the effects  
unit output, into the DA-3700’s L or R IN jack.  
To OUT  
To IN  
To OUT  
To IN  
NOTE: If you are not using the Effects Loop,  
be sure the LOOP BARS are re-connected.  
Without these, there will be no sound.  
Vocals  
The MIC INSERT jacks on the rear panel allow you to  
loop the vocals through an effects unit. NOTE: In or-  
der to do this you must have a 1/4” Y adapter cable  
(not included) for each microphone line.  
Y Adapter Cable  
Connect the single end of the Y cable into the MIC  
INSERT jack. Connect one side of the double end into  
the input on the effects device and the other end into  
the output of the effects device.  
Vocopro VSPM-1  
NOTE: If the Y cable is plugged into the DA-3700PRO  
but the double ends are not connected to the IN and  
OUT of a device, there will be no sound. So if you are  
not using effects, be sure the Y cable is unplugged.  
To OUT  
To IN  
8
 
Front panel description  
1
2
4
5
6
7
8
9
23  
10  
23  
3
MIC 1  
MIC 2  
ECHO  
VOL  
LOW  
-15  
HIGH  
-15  
REPEAT  
DELAY  
ST MONO  
0
10  
+15  
+15  
0
10  
0
10  
1. MICROPHONE INPUT jacks – Connect your microphones to these inputs with 1/4” cables.  
2. -20dB GAIN pads – Press pad to an inward position to decrease the microphone output’s gain by -20dB. Release pad to its  
outer position to have the microphone output revert back to NORMAL volume.  
3. PEAK LED indicators – The PEAK LED indicates when the input level is too high.  
4. VOL. control – This control increases and decreases the VOLUME level for the MIC channels. Turn clockwise to increase MIC  
VOLUME and counter-clockwise to decrease the MIC VOLUME.  
5. BAL. control – Use this control to fade the microphone output between the left and right channels. When the balance control  
is directly centered, equal sound comes out of both the left and right channels giving you perfect stereo sound.  
6. ECHO control – This control increases/decreases the amount of ECHO applied to the MIC channels. Turn clockwise to  
increase ECHO and counter-clockwise to decrease ECHO.  
7. LOW. control – This control increases/decreases the amount of LOW (bass) frequency response applied to the MIC  
channels. Turn clockwise to increase the LOW frequency response and counter-clockwise to decrease the LOW frequency  
response.  
8. MID. control – This control increases/decreases the amount of MID-RANGE frequency response applied to the MIC channels.  
Turn clockwise to increase the MID-RANGE frequency response and counter-clockwise to decrease the MID-RANGE frequency  
response.  
9. HIGH. control – This control increases/decreases the amount of HIGH (treble) frequency response applied to the MIC  
channels. Turn clockwise to increase the HIGH frequency response and counter-clockwise to decrease the HIGH frequency  
response.  
10. DIGITAL KEY CONTROL - Use these buttons to raise or lower the musical key of your source music (CD/DVD player). The  
LEDs indicate where the current key of the music is.  
b
- Lowers the key of the music  
- Restores the music back to its original (natural) key  
# - Raises the key of the music  
23. INPUT SELECTOR buttons - Use these buttons to toggle between the two available input channels A and B.  
9
 
Front panel description (cont.)  
MIC 1  
MIC 2  
VOL  
LOW  
-15  
HIGH  
-15  
REPEAT  
DELAY  
ECHO  
ST MONO  
0
10  
+15  
+15  
0
10  
0
10  
12  
13  
14  
15  
16  
11  
17  
18  
19  
20  
21  
22  
24  
25  
11. ST/MO (Stereo/Mono) - Use this button to switch between the two echo output modes, STEREO and MONO.  
12. MASTER ECHO VOLUME control – This control increases/decreases the MASTER VOLUME LEVEL of the ECHO effect  
available to the MIC 1, 2-3 channels. Turn clockwise to increase MASTER ECHO VOLUME and counter-clockwise to decrease  
the MASTER ECHO VOLUME.  
13. ECHO LO. control – This control increases/decreases the amount of LOW frequency response applied during the ECHO  
effect application. Turn clockwise to increase the LOW frequency response, and  
counter-clockwise to decrease the LOW frequency response.  
14. ECHO HI. control – This control increases/decreases the amount of HIGH frequency response applied during the ECHO  
effect application. Turn clockwise to increase the HIGH frequency response, and counter-clockwise to decrease the HIGH  
frequency response.  
15. ECHO RPT. control – REPEAT adjusts the interval repetition of the echo effect. As more REPEAT is applied to the ECHO effect,  
more echo intervals will occur prior to fading out. Turn clockwise to increase the REPEAT level and counter-clockwise to  
decrease the REPEAT level.  
16. ECHO DEL. control – DELAY adjusts the total beginning and ending length of each echo interval. As more DELAY is applied to  
the ECHO effect, each ECHO interval will become longer in time. Turn clockwise to increase the DELAY level and counter-clock  
wise to decrease the DELAY level.  
17. MUSIC VOL. control – This control increases/decreases the MUSIC VOLUME level(s) from INPUT SOURCES that are connect  
ed to the CD/DVD channels. Turn clockwise to increase MUSIC VOLUME and counter-clockwise to decrease the MUSIC  
VOLUME.  
18. MUSIC BALANCE control - Use this control to fade the music output between the left and right channels. When the balance  
control is directly centered, equal sound comes out of both the left and right channels giving you perfect stereo sound.  
19. MUSIC LOW. control – This control increases/decreases the amount of LOW (bass) frequency response applied to the audio  
output of INPUT SOURCES connected to the CD/DVD channels. Turn clockwise to increase the LOW frequency response and  
counter- clockwise to decrease the LOW frequency response.  
20. MUSIC MID. control – This control increases/decreases the amount of MID-RANGE frequency response applied to the audio  
output of INPUT SOURCES connected to the CD/DVD channels. Turn clockwise to increase the MID-RANGE frequency  
response and counter-clockwise to decrease the MID-RANGE frequency response.  
21. MUSIC HIGH. control – This control increases/decreases the amount of HIGH frequency response applied to the audio output  
of INPUT SOURCES connected to the CD/DVD channels. Turn clockwise to increase the HIGH frequency response and  
counter-clockwise to decrease the HIGH frequency response.  
22. MIC MASTER VOLUME control - Use this to control the overall volume of both microphone channels. Turn clockwise to  
increase the master microphone volume and counter-clockwise to decrease the master microphone volume.  
24. MUSIC MASTER VOLUME control - Use this to control the overall volume of the music from the CD/DVD player that is input  
into the DA-3700PRO.  
25. POWER button – This button turns the DA-3700PRO ON and OFF.  
10  
 
Rear panel description  
1
7
8
9
2
T
10  
3
4
5
6
11 12  
13  
14  
1. VOLTAGE SELECTOR switch – This selector toggles between 110-120V and 220-240V power settings. NOTE: Please ensure  
this toggle is set to the correct position, matching the receiving AC outlets power supply before plugging it in an operating it.  
Doing so may cause severe damage to the unit and void your product warranty.  
2. FUSE terminal - This terminal houses the DA-3700PRO’s main system FUSE. NOTE: If fuse replacement is necessary, only  
replace with the same type and rating of fuse.  
3. AC~IN terminal – Connect AC MAINS POWER CORD from the wall outlet to this terminal.  
4. SPEAKER BINDING posts (MDP) – Connect appropriate speaker cables from these SPEAKER OUTPUT jacks to the INPUT  
jacks located on your speakers. Standard speaker wire or speaker cables equipped with MDP (banana) plugs can be used with  
the DA-3600 Pro’s SPEAKER BINDING posts. NOTE: To use standard speaker wire, unscrew the plastic color- coded (red-  
black) binds until you can access the wire holes  
located on the inner-sides of the binds and slide the wire leads into them. Fasten them down by re-tightening the binds.  
5. 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 DA-3700PRO.  
6. VOLUME RESET switch - The master MIC and MISIC volumes on the DA-3700 are programmed to reset back to zero every  
time the machine’s power is turned off. The VOLUME RESET switch allows you to turn this feature off. When this switch is in  
the ON position, the volume will reset whenever the machine is turned off and when in the OFF position, the volume will stay the  
same when the machine is turned off.  
7. MIC INSERT jacks - These 1/4” jacks allow you to loop each microphone line through an effects unit. NOTE: In order to do  
this you will need a 1/4” Y cable (not included). See “Connecting to an effects system using the Effects Loop” instructions in  
the GETTING CONNECTED section of this manual for further instructions on running vocals through an effects loop.  
8. VIDEO INPUT (RCA) jacks - Connect RCA-ended video cables from these jacks to the VIDEO OUT jacks on the device connected  
to your VCD/CD (Input A) or DVD (Input B) player.  
9. VIDEO OUTPUT (RCA) jacks - Connect RCA-ended video cables from these jacks to the VIDEO IN on a TV or display device.  
These are not independent outputs; they both output the same video signal simultaneously.  
10. MIC OUTPUT jacks – These jacks output the two mic channels without any music. Connect a paired RCA-ended patch cable  
from these jacks to the appropriate INPUT jacks on a mixer or vocal effects unit. NOTE: MIC OUTPUT from these jacks is dry.  
Echo effects will not be applied to this MIC OUTPUT, regardless of the current master and channel echo settings.  
11. REC OUTPUT jacks – These jacks provide connection to recording and other external audio devices. Connect a paired RCA-  
ended patch cable from these jacks to appropriate INPUT jacks on the recording or other audio/video device.  
12. LINE OUTPUT jacks – These jacks output both mic channels and source music together.  
13. AUDIO INPUT jacks - Input audio from a VCD/CD or DVD player into either of these channels. The audio from channel A can  
only be heard when channel A is selected on the DA-3700PRO’s input selector and the audio from channel B can only be heard  
when channel B is selected on the DA-3700PRO’s input selector.  
14. EFFECTS LOOP jacks – Use the EFFECTS LOOP jacks to connect an external effects unit, such as a key controller or EQ. After  
removing the LOOP-BARS, connect a patch cable from the OUTPUT jacks of your external effects unit to the EFFECT LOOP IN  
jacks. Connect a second patch cable from the INPUT jacks of your external effects unit to the EFFECT LOOP OUT jacks on the  
DA-3700PRO. NOTE: Do not discard the loop-bars. It is necessary for the loop-bars to be in place when there is no external  
effects unit being used.  
11  
 
Remote control description  
1
2
b
#
LOW  
NORMAL  
HIGH  
3
4
1. INPUT SELECTOR buttons - Use these buttons to toggle between the two available input channels A and B.  
2. DIGITAL KEY CONTROL - Use these buttons to raise or lower the musical key of your source music (CD/DVD player). The  
LEDs indicate where the current key of the music is.  
b
- Lowers the key of the music  
- Restores the music back to its original (natural) key  
# - Raises the key of the music  
3. MIC MASTER VOLUME control - Use this to control the overall volume of both microphone channels. Turn clockwise to  
increase the master microphone volume and counter-clockwise to decrease the master microphone volume.  
4. MUSIC MASTER VOLUME control - Use this to control the overall volume of the music from the CD/DVD player that is input  
into the DA-3700PRO.  
12  
 
Basic operations  
Switching between input channels  
Use the A and B input buttons on the DA-3700PRO’s front panel or remote control to switch between the two input channels.  
b
#
LOW  
NORMAL  
HIGH  
Using Digital Key Control  
Digital Key Control enables you to adjust the key of the source music (CD/DVD player) to fit the vocal range of the person who  
is singing. The key can be adjusted by using the key control buttons on the DA-3700’s front panel, the remote control or from a  
Remote Key Control microphone.  
b
- lowers the key of the music  
- Resets the key back to its original (natural) state  
# - Raises the key of the music  
b
#
LOW  
NORMAL  
HIGH  
13  
 
Advanced operations  
Balancing the Music with the Vocals  
The DA-3700 Pro has MASTER, HIGH, MID and LOW controls for both the music and the microphone levels, which enables you to  
adjust your mix levels with precision, resulting in a professional-sounding mix. If you find that the music is too loud, simply adjust the  
MUSIC VOLUME control. Also, keep in mind that HIGH, MID and LOW levels also affect the overall “sound” and can be adjusted to  
correct sound balancing problems. Excessive high (treble) frequencies can lead to feedback, so be careful when adjusting them.  
Balancing a Microphone Channel  
When adjusting Mic levels, it is recommended to do so in this order:  
1. First adjust the MIC VOLUME control to approximately 50%. (Shown on Fig. 1)  
2. Then balance the LOW, MID and HIGH controls to approximately 40-60%. (Shown on Fig. 2)  
3. Start background music with the MUSIC VOLUME set at approximately 50%. (Shown on Fig. 3)  
4. Fine-tune each MIC CHANNEL as necessary till you get a clean balanced mix  
5. Remember to compensate if the background music has striking volume changes. To do this, you can utilize the -20dB GAIN PAD.  
The -20dB Gain Pad toggles between a current volume level and reduced gain volume level. This control can be used to immedi-  
ately go from one volume level to another by a quick push of the button.  
6. Once all the settings are complete, do a complete song for complete balancing success.  
Fig. 1  
Fig. 2  
Fig. 3  
50%  
40% -60%  
50%  
VOL.  
VOL.  
LO  
MID.  
HIGH  
-15  
+15 -15  
+15 -15  
+15  
0%  
100%  
0%  
100%  
0%  
100%  
Balancing the Music Channel  
When adjusting the music levels follow the same procedure as seen above for Mic levels.  
14  
 
Troubleshooting  
CAUSE  
SOLUTIONS  
PROBLEMS  
Input Selector is set incorrectly  
No sound coming from  
selected music source  
Change Input Selector to the  
correct current playing source  
Music Master Volume control is  
set to minimum  
Raise Music Master Volume level to  
an appropriate level  
The Effect Loop bars are either  
not inserted or inserted  
incorrectly; or the device  
connected to the Effect Loop is  
incorrectly working  
Connect the Loop Bars horizontally  
(L-OUT to L-IN and R-OUT to  
R-IN); or reconnect the connected  
device as stated in the instruction  
manual  
Speakers and Speaker Cables  
are either not connected, loose or  
malfunctioning  
Check Speakers and Speaker  
Cable connections. Tighten or  
replace if necessary.  
Source player is functioning  
incorrectly  
Replace player and reset the  
DA-3700PRO’s power supply  
Video cable(s) are not properly  
connected  
There are no graphics  
on the screen.  
Reconnect cables firmly to correct  
video jacks as stated in the  
instruction manual  
Disc medium is not a CDG  
Insert a CDG for playback  
TV or monitor device is not set to  
the correct video setting  
Change TV or monitor settings to  
accept video  
Microphone is pointed to, or to  
close to speakers  
High pitched squealing  
occurs when using the  
microphone  
Move microphone away from  
speakers  
Treble level(s) are too high on  
microphone channel(s)  
Turn down treble level(s) on  
microphone channel(s)  
The microphone is not turned on  
No microphone output is  
present  
Turn on the microphone  
The microphone cable is either  
loose or not functioning  
Tighten or replace the microphone  
cable  
The Microphone Volume for that  
channel is set to a minimum  
Turn up the Microphone Volume for  
that channel  
The microphone is not functioning  
correctly  
Replace the microphone  
15  
 
R
THE SINGER'S ULTIMATE CHOICE™  
© Vocopro 2005 V 1.0  
WWW.VOCOPRO.COM  
 

Technicolor Thomson Stereo System CS606 User Manual
Telex Network Card IP 223 User Manual
Toshiba Laptop 2550CDT User Manual
Tote Vision Security Camera MX 85 User Manual
Triarch Indoor Furnishings 33124 User Manual
Tripp Lite Mouse IN3007KB User Manual
Tripp Lite Switch PDUMH15AT User Manual
Verona Appliance Trim Kit VEGCT424F User Manual
Verona Range VEFSGG 244 User Manual
Weber Gas Grill 1000 Series User Manual