VocoPro Musical Instrument DA 900 User Manual

Features:  
Dual EQ Design with Slider LED's and EQ On/Off Toggle Button  
10-Band EQ for Music Channels and 5-Band EQ for Microphone Channels  
Digital Echo, Repeat and Delay Controls with Separate Mic Channel Echo Level  
Controls  
Two 1 / 4" Microphone Inputs with Individual Volume Controls  
Gain Pad for On-the-fly Mic Channel Boosting  
Large Stereo Spectral Analyzer with Normal and Reverse Display Modes  
Pink Noise Generator for Performance Testing and Diagnostics  
Two RCA-style Audio Input Channels for Source Devices  
One RCA-style Mic-Only Audio Output Channel for Dedicated Vocal Output  
Two RCA-Style Audio Outputs (REC and Pre-out) for External Amps, Recorders and  
Mixers  
Sleek, Roadworthy Two Space Rack-Mountable Construction  
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MASTER  
10-Band Stereo Equalizer  
SPECTRUM GRAPHIC EQUALIZER ANALYZER  
DA-900  
DIGITAL KARAOKE  
MIXER WITH EQ  
MIC1/VOL  
MIC1  
NORMAL  
GAIN  
MIC2  
MIC2/VOL  
POWER  
EQ MODE  
DISPLAY MODE  
INPUT  
DVD  
CDG  
NORMAL REVERSE  
OFF  
ON  
PINK NOISE  
DA-900  
Digital Karaoke Mixer  
With Dual Equalizers  
 
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  
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.  
instructions should be retained for future reference.  
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 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.  
1
 
SAFETY INFORMATION (U.S.A.)  
CAUTION:  
READ THIS BEFORE OPERATING YOUR UNIT  
1. IMPORTANT NOTICE: DO NOT MODIFY THIS  
UNIT!: This product, when installed as indicated in the  
instructions contained in this manual, meets Q.C.  
requirements. Modifications not expressly approved by  
Vocopro may void your warrenty.  
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.  
3. Do not operate the unit upside-down.  
3. NOTE: 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. 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:  
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.  
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).  
7. Do not attempt to clean the unit with chemical solvents:  
this might damage the finish. Use a clean, dry cloth.  
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.  
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.  
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.  
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.  
CAUTION  
NOTE:  
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.  
Please check the copyright laws in your country  
before recording from records, compact discs,  
radio, etc. Recording of copyrighted material may  
infringe copyright laws.  
2
 
DA-900  
Digital Karaoke Mixer with Dual Equalizers  
Contents  
Specifications  
POWER CONSUMPTION  
10W  
Introduction  
Safety Instructions..............................  
Welcome……………………………….  
Specifications.....................................  
Listening For a Lifetime………………  
1-2  
3
4
INPUT SENSITIVITY  
65mV  
5
S/N RATIO  
Before Getting Started  
Unpacking..........................................  
Mounting............................................  
78 - 5dB/80dB (0-55mV)  
6
6
FREQUENCY RESPONSE  
30Hz - 16kHz  
Getting Connected  
Source Inputs.....................................  
Pre-Out..…….....................................  
Line Out.............................................  
Music Out...……................................  
Mic Out..............................................  
Mic Inputs..........................................  
Powering Up......................................  
Sound Check.....................................  
7
7
8
8
8
9
9
9
FREQUENCY LIMITATION  
30Hz  
60Hz  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
+/- 7dB - 5dB  
120Hz  
240Hz  
480Hz  
1kHz  
2kHz  
4kHz  
8kHz  
Controls and Functions  
Front Panel.........................................  
Rear Panel………………………….....  
16kHz  
10  
11  
POWER INPUT  
110V-240V  
Operations  
INPUT SENSITIVITY  
Source Music Output...........………….  
Digital Echo Settings...........................  
Microphone Output.............................  
12  
12  
12  
50mV  
ACCESSORIES  
Operating Instructions  
Warranty Card  
1
1
4
 
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  
40  
50  
60  
70  
80  
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  
Example  
90  
Subway, Motorcycle, Truck traffic, Lawn Mower  
Garbage truck, Chainsaw, Pneumatics drill  
Rock band concert in front of speakers  
Gunshot blast, Jet plane  
100  
120  
140  
180  
Rocket launching pad  
-Information courtesy of the Deafness Research Foundation  
5
 
Before Getting Started  
Thank you for purchasing the DA-900 Digital Karaoke Mixer with Dual Equalizers. We know the DA-900 will provide years of high-  
quality enjoyment and reliable music entertainment for you when used properly. Please read this manual carefully before using your  
new DA-900 to ensure best performance.  
Unpacking the DA-900  
Carefully remove the DA-900 from its carton. It is recommended that the original packaging materials be retained, should it become  
necessary to return the product for any reason.  
Be Sure You Have the Parts and Components Included with theDA-900:  
Parts  
1- DA-900  
1- RCA Patch Cable  
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MASTER  
10-Band Stereo Equalizer  
SPECTRUM GRAPHIC EQUALIZER ANALYZER  
DA-900  
DIGITAL KARAOKE  
MIXER WITH EQ  
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
POWER  
EQ MODE  
DISPLAY MODE  
INPUT  
DVD  
CDG  
NORMAL REVERSE  
OFF  
ON  
PINK NOISE  
Mounting the DA-900  
To mount, carefully place the DA-900 Pro in the 2 rack-space area of your case. The DA-900 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.  
Side Mounting  
EQ  
DISPLAY  
MIC EFFECT  
MIC EQ  
MASTER  
10-Band Stereo Equalizer  
SPECTRUM GRAPHIC EQUALIZER ANALYZER  
DA-900  
DIGITAL KARAOKE  
MIXER WITH EQ  
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
POWER  
INPUT  
EQ MODE  
DISPLAY MODE  
DVD  
CDG  
OFF  
ON  
NORMAL REVERSE  
PINK NOISE  
6
 
Getting Connected  
The DA-900 has two audio input channels for source players. Each device connection will require one RCA-type stereo patch cable.  
To connect the source players, follow the steps below:  
(a) Connect an RCA-type stereo patch cable from the AUDIO OUTPUT jacks on the SOURCE PLAYER to either of the two AUDIO INPUT channels on  
the DA-900.  
(b) Repeat the above for a second SOURCE PLAYER using the available INPUT on the DA-900.  
Source Inputs  
CAUTION  
RISK OF SHOCK  
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
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.  
OUT  
OUTPUT  
INPUT  
OUTPUT  
LAVERNE CALIFORNIA  
U.S.A  
SERIAL NO.  
To Audio Out  
To Audio Out  
MP3 PLAYER  
CD PLAYER 2  
While both input channels are designated with a device name (DVD and CDG), any compatible device can be connected to them. NOTE: If there is a  
needed video connection from one of the source players, connect the video straight from the source player to the TV or display device. The device  
names are for convenience only, and not meant to prevent one from connecting a different compatible device.  
The DA-900 has four pairs of RCA-type OUTPUTS for connection to external devices:  
PRE-OUT (1): This OUTPUT is for connecting the DA-900 directly to an external amplifier. Output signals from these PRE-OUT jacks are suited for  
amplifiers with no VOLUME control. If your amplifier has input jacks other than RCA, obtain an appropriate set of cables to match the inputs on your  
amplifier  
(a) Using an audio patch cable, connect the RCA side to the PRE-OUT jacks on the DA-900 and connect the other sides plugs to the amplifier's AUDIO  
IN or CH. A/B jacks.  
Pre-Out  
CAUTION  
RISK OF SHOCK  
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
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.  
OUT  
OUTPUT  
INPUT  
OUTPUT  
LAVERNE CALIFORNIA  
U.S.A  
SERIAL NO.  
To Audio In  
AMPLIFIER  
7
 
Getting Connected cont...  
LINE OUT (1): This OUTPUT is for connecting the DA-900 to a secondary mixer or recording device. NOTE: Output from these jacks is NOT affected by  
the MASTER VOLUME CONTROL.  
(a) Using an RCA-type patch cable, connect the plugs from one side to the LINE OUT jacks on the DA-900 and the connect the other sides plugs to the  
external device's AUDIO INPUT jacks.  
Line Out  
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
To Audio In  
OUT  
OUTPUT  
INPUT  
OUTPUT  
RECORDER  
MUSIC OUT (1): This OUTPUT is for connecting SOURCE PLAYER output exclusively to a recording device, secondary mixer, effects or other device.  
(a) Using an RCA-type patch cable, connect one side to the MUSIC-OUT jacks on the DA-900 and connect the other sides plugs to the recorder's,  
mixer's, effects unit's or other device's AUDIO INPUT jacks.  
Music Out  
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
To Audio In  
OUT  
OUTPUT  
INPUT  
OUTPUT  
MIXER  
MIC OUT (2) : These OUTPUTS are for connecting the DA-900's microphone output to a recording device, secondary mixer, effects or other device.  
(a) Using an RCA-type patch cable, connect one side to either of the MIC-OUT jacks on the DA-900 and connect the other sides plugs to the recorder's,  
mixer's, effects unit's or other device's AUDIO INPUT jacks.  
Mic Out  
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
To Audio In  
STAGE  
MONITOR 1  
STAGE  
MONITOR 2  
OUT  
OUTPUT  
INPUT  
OUTPUT  
RECORDER  
8
 
Getting Connected cont...  
The DA-900's two microphone jacks accommodate microphones with ¼" style plugs. Microphones with an 1/8-inch mini-plug can also be connected with  
an 1/8-inch to ¼" adapter.  
(a) If the microphone cable is detachable, plug the XLR end into the microphone firmly till it "locks" into place.  
(b) Unravel the microphone cable to prevent tangling and connect the ¼-inch plug in one of the DA-900's microphone jacks.  
Mic Inputs  
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
Mic 1  
Mic 2  
Powering Up  
(a) Plug the AC power cord's female end into the DA-900 and plug the other end into a 110-240V AC wall outlet, but do not turn on the DA-900 yet.  
NOTE: The DA-900 can be used with 110V-120V and 220V-240V power supplies. Please set the VOLTAGE SELECTOR to match your AC power  
supply. If plugged into a AC power outlet with the VOLTAGE SELECTOR set improperly, the DA-900 may malfunction, possibly to the point of  
system failure. In this case, the product warranty would become void.  
(b) Turn on power to all connected external devices.  
(c) If dealing with VIDEO, be sure your TV is set to receive video input from the source player's VIDEO OUTPUT jack. (Some TV's use a VIDEO INPUT,  
AUX or CHANNEL 0 as a "dedicated" video channel). Check you TV's instruction manual to see how it selects its video channel(s).  
(d) Turn on the power to the DA-900.  
Sound Check  
(a) Select the correct input on your amplifier. For example, if the LINE OUTPUT from the DA-900 is connected to the LINE 1 INPUT on the amplifier, set  
the amplifier's INPUT CHANNEL to LINE 1.  
(b) Set the MASTER VOLUME control on amplifier to moderate level for testing and adjust the MUSIC E.Q. as desired.  
(c) Set the DA-900's MIC 1-2 VOLUME controls to 50% and set the MIC E.Q. as desired.  
(d) Set the DA-900's INPUT SELECTOR to the correct channel that a source player is connected to. For example, if you wish to play from the player  
connected to the DVD input channel, press the DVD button.  
(e) Start playback from source player and ensure the connected MIC is on. Begin to sing and you should hear the music playback and your vocals mixed  
together from the speakers.  
Your sound check is now complete!  
9
 
Front Panel: Description and Functions  
1. POWER button - This button turns the DA-900 ON/OFF.  
2. 10-BAND GRAPHIC EQ - This GRAPHIC EQ is used to BOOST and/or CUT particular frequencies from SOURCE MUSIC output. Each slide fader  
process' a particular frequency range indicated by the number above it. Frequencies from 30Hz - 120Hz constitute the very low to low range. Frequencies  
from 120Hz to 1kHz are the mid-range and frequencies from 1kHz to 16kHz make up the high to very high range. To adjust slide the fader up to boost the  
frequency presence and down to cut the frequency presence.  
3. SPECTRUM GRAPHIC analyzer - This displays a GRAPHICAL representation of the master AUDIO OUTPUT and FREQUENCY levels. Use this  
display to MONITOR your AUDIO OUTPUT signal for sound quality assurance. As with the graphic EQ, each LED bar represents a particular frequency  
range indicated by the number above it.  
4. INPUT SOURCE buttons - These buttons select devices connected to the (DVD) and (CDG) AUDIO INPUT channels for active audio playback. For  
example, let's say you have player A connected to the DVD channel and player B connected to the CDG. If you wanted playback from player A, you  
would press the DVD button and for player B, the CDG button.  
5. PINK NOISE button - When pressed, this button generates a PINK NOISE signal that is routed through the AUDIO OUTPUTS to connected devices.  
This is designed for quick and easy testing that the DA-900 is outputting a signal to external devices. NOTES: To test sound quality, it is recommended to  
use a media track or microphone rather than the pink noise generator. It is recommended to keep the master volume on the DA-900 and external  
amplifier to a moderate level suitable for signal transfer.  
6. EQ MODE ON/OFF buttons - These buttons turn the EQ off and on.  
7. DISPLAY MODE control - The SPECTRUM display can be REVERSED for different metering needs and techniques. Press NORMAL for standard  
metering, and REVERSE for reverse metering.  
8. EQ DISPLAY fader - The SPECTRUM display's graphic leveling can be adjusted for INCREASED or DECREASED peak valuing. Slide fader up to  
INCREASE and DOWN to decrease.  
9. DELAY fader - The DELAY fader adjusts the length of each echo interval with ECHO is applied. As more DELAY is applied, there will be more "space"  
between the starting and ending point of each echo interval prior to fade out. Slide upward to increase DELAY and downward to decrease DELAY.  
10. REPEAT fader - The REPEAT fader adjusts the number of echo repetitions prior to fade out by adjusting the echo interval's full-cycle time. As more  
REPEAT is applied, more echoes will occur prior to fadeout. Slide upward to increase REPEAT, and downward to decrease REPEAT.  
11. MIC 1-2 ECHO faders - These faders adjust the level of ECHO applied to the MICROPHONE channels 1 and 2 individually. Slide upward to increase  
VOLUME, and downward to decrease VOLUME.  
12. MIC 1-2 VOLUME controls - These controls adjust the VOLUME levels for MIC channels 1 and 2 individually. Turn clockwise to increase VOLUME,  
and counter-clockwise to decrease VOLUME.  
13. MIC 1-2 INPUT jacks - These ¼" MIC jacks are for connecting microphones with a ¼" type plug.  
14. MIC GAIN/MORMAL button - Activate the MIC GAIN button for a boost to the MIC output. This is handy when singing along with source audio tracks  
that differ in volume levels.  
15. MASTER VOLUME fader - The MASTER VOLUME fader is the MASTER LEVEL control for the DA-900's OUTPUT. Turn clockwise to increase and  
counter-clockwise to decrease MUSIC VOLUME.  
Front Panel  
10 11  
9
8
3
2
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MASTER  
10-Band Stereo Equalizer  
SPECTRUM GRAPHIC EQUALIZER ANALYZER  
DA-900  
DIGITAL KARAOKE  
MIXER WITH EQ  
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
POWER  
EQ MODE  
DISPLAY MODE  
INPUT  
1
DVD  
CDG  
NORMAL REVERSE  
OFF  
ON  
PINK NOISE  
14  
13  
12  
15  
4
5
7
6
10  
 
Rear Panel: Descriptions and Functions  
1. MIC (ONLY) OUTPUT jacks - These jacks exclusively supply mixed-microphone MIC-ONLY stereo signals to external devices such as, effects units,  
additional mixers or other devices. There are two MIC ONLY channels for simultaneous MIC ONLY signal feeds.  
2. AUDIO (CDG/DVD) INPUT jacks - These jacks connect the stereo AUDIO OUTPUT signals from SOURCE PLAYERS (i.e. CDG, CD, DVD players)  
to the DA-900.  
3. MUSIC (ONLY) OUTPUT jacks - These jacks exclusively supply a MUSIC-ONLY stereo signal to an external device such as, an effects unit,  
secondary mixer or other device.  
4. LINE OUT jacks - This OUTPUT is for connecting the DA-900 to a secondary mixer or recording device. NOTE: Output from this jack is not affected by  
the master volume control.  
5. PRE-OUT jacks - These jacks are designed for a direct connection to a power amplifier. Output signals from the PRE-OUT jacks are suited for most  
amplifier inputs.  
6. VOLTAGE selector - This is used to set the DA-900's incoming AC POWER setting to either 110V for North American-based power supplies, and  
240V for European-based power supplies. NOTE: This selector must be set correctly prior to powering on the DA-900. If this selector is set incorrectly, a  
fire hazard may arise and the DA-900 may become inoperable, voiding your warranty.  
7. AC POWER terminal - This AC terminal is for connecting the supplied AC POWER CORD between the DA-900 and the AC POWER OUTLET.  
Rear Panel  
5
4
6
CAUTION  
RISK OF SHOCK  
.
MIXED  
MIC ONLY INPUT MUSIC  
CDG DVD  
ONLY  
LINE  
PRE  
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.  
OUT  
OUTPUT  
INPUT  
OUTPUT  
LAVERNE CALIFORNIA  
U.S.A  
SERIAL NO.  
2
7
3
1
11  
 
Operations  
Customizing Source Music Output  
To get your SOURCE MUSIC to sound just how you want it, use the MUSIC EQ. It's 10-band design provides detailed frequency adjustments. The  
MUSIC EQ does not have to be adjusted every listen. Rather, it should be adjusted when room acoustics, environments, performers, source music or  
other significant factor changes, causing a loss in sound quality and balance. Here are some common uses for adjusting the different frequency settings:  
30Hz - This range is commonly used to adjust the very low SUB-BASS frequencies that form bass traps in bad acoustical environments.  
60Hz - This range is commonly used to adjust SUB-BASS frequencies from subwoofers.  
120Hz - This range is commonly used to adjust the MID-LOW BASS frequencies from musical instruments.  
240Hz - This range is commonly used to adjust UPPER-MID BASS frequencies that either increase definition of bass or reduce a bass signal's  
"muddiness".  
480Hz - This range is commonly used to increase or decrease the "presence" of vocals in a mix.  
1kHz - This range is commonly used to adjust the "color" of speech in spoken word and other similar source ranges. The more allowable  
frequencies in this range, the more definition.  
2kHz - This range is commonly used to adjust the attack or "snap" of percussion instruments. The less allowable frequencies in this range, the  
less attack.  
4kHz - This range is commonly used to adjust the higher frequencies in outdoor environments where rapid loss of those frequencies occur.  
8kHz - This range is commonly used to adjust the sibilance of speech. Sibilance includes the sharp "sssss" sounds of pronunciation that can be  
annoying when occurring repeatedly at high volumes or in closed, reflective quarters.  
16kHz - This range is commonly used to adjust the level of "air" in audio output. Too much "air" results is "hiss", so be careful when adjusting.  
To adjust frquencies, slide the faders up to boost the frequency presence and down to trim the frequency presence.  
Customizing Digital Echo Settings  
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.  
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MASTER  
ECHO  
REPEAT  
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
DELAY  
Customizing Microphone Output  
1. Set the MIC 1 and MIC 2 sliders to their center positions.  
2. Make adjustments to the 540Hz and 1100Hz MIC EQ sliders for fine-tuning "vocal presence". The 60Hz and 2200Hz sliders are also available for  
adjustment of very low/high frequencies in the MIC OUTPUT. However, it is recommended not to apply too much TREBLE as that can lead to  
microphone feedback.  
3. If you know there will be striking VOLUME changes in the MUSIC signal, remember the MIC GAIN button for those times when you temporarily need a  
boost..  
EQ  
DISPLAY  
MIC EQ  
MIC EFFECT  
MASTER  
2
1
MIC1/VOL  
MIC1  
NORMAL  
MIC2  
MIC2/VOL  
3
12  
 
C
Vocopro 2004  
V 1.0  
WWW.VOCOPRO.COM  
 

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