DA-2277 FEATURES: • Wireless Receiver Base Charges Wireless Microphones and Also Serves as a Microphone Docking Station • 11-Step Digital Key Controller • Professional Digital Echo with Repeat and Delay Controls • Vocal Cancel and Vocal Partner Features to Remove Guide Vocals from Multiplex Karaoke Media • Two Additional Mic Inputs for a Total of Four Microphone Channels w/ Individual Volume Controls • Digital Echo On/Off Switch on 3 Mic Channels • Music Bass, Treble and Volume Controls • Microphone Master,
DA-2277 Digital Key Control Mixer with Dual Rechargeable Wireless Microphone System Contents Cautions and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Listening for a Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Features and Specifications . . . . . . . . . . . . . . . .
Safety Instructions CAUTION RISK OF SHOCK CAUTION: To reduce the risk of electric shock, do not remove cover (or back). No userserviceable parts inside. Only refer servicing to qualified service personnel. Explanation of Graphical Symbols The lightning flash & arrowhead symbol, within an equilateral triangle, is intended to alert you to the presence of danger. The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and servicing instructions.
CAUTION: Read this before operating your unit CAUTION The apparatus is not disconnected from the AC power source so long as it is connected to the wall outlet, even if the apparatus itself is turned off. To fully insure that the apparatus is indeed fully void if residual power, leave unit disconnected from the AC outlet for at least fifteen seconds. 1. To ensure the finest performance, please read this manual carefully. Keep it in a safe place for future reference. 2.
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.
The DA-2277 Features DA-2277 FEATURES: • Wireless Receiver Base Charges Wireless Microphones and Also Serves as a Microphone Docking Station • 11-Step Digital Key Controller • Professional Digital Echo with Repeat and Delay Controls • Vocal Cancel and Vocal Partner Features to Remove Guide Vocals from Multiplex Karaoke Media • Two Additional Mic Inputs for a Total of Four Microphone Channels w/ Individual Volume Controls • Digital Echo On/Off Switch on 3 Mic Channels • Music Bass, Treble and Volume Controls
Before Getting Started: Things to Consider It is very important to read the following instructions prior to starting any installation procedures. Doing so will ensure a correct installation and may save you some time as well. Protect Against Power Surges • Connect all external components before you plug any of their power cords into the wall outlet. • Turn off the DA-2277 before you connect or disconnect any cables. • Make sure all cables are properly grounded.
Microphone Basics Wireless Microphones - The Basics • Every wireless microphone system must operate on a specific frequency range. • The government dictates the frequency ranges available for use with consumer wireless devices. • Wireless frequencies are shared with TV stations, communications equipment and a large number of wireless microphone systems.
Microphone Basics Avoiding Feedback Acoustic feedback can be a problem in any sound system. Audio systems that include wireless microphones are somewhat more prone to feedback than those using only wired microphones, simply because the freedom of movement with wireless makes it more likely that the user will walk in front of the speakers. Take steps to make it less likely that the wireless user will walk in front of the speakers.
Front Panel Descriptions and Controls 1 2 3 4 5 6 7 Digital Key Control Mixer with/Dual Rechargeable Wireless Mic System Delay 0 DIGITAL KEY CONTROLLER POWER Down Normal Up 0 Vocal Partner Vocal Cancel A/V Source Music 0 Repeat 10 0 Digital Echo 10 0 Mic 4 Echo On 9 5 0 10 Mic Master 0 -15 +15 Bass Mic 3 Mic 1 (wireless) Mic 2 (wireless) 10 Echo On Echo On 0 -15 +15 Treble Remote Key Control Mic 4 Input Mic 3 Input 1.
Front/Top Panel Descriptions and Controls TOP VIEW OF DA-2277 8 14 Digital Key Control Mixer with/Dual Rechargeable Wireless Mic System Delay 0 DIGITAL KEY CONTROLLER POWER Down Normal Up 0 Vocal Partner Vocal Cancel A/V Source Music 0 Repeat 10 0 12 Digital Echo 10 0 Mic 4 Echo On 9 5 0 0 10 Mic Master Volume -15 +15 Bass Mic 3 (wireless) Echo On Mic 2 (wireless) Echo On 0 -15 +15 Treble Remote Key Control Mic 4 Input Mic 3 Input 11 9 Mic 1 10 13 10 8.
Rear Panel Descriptions and Controls 1 2 4 LA VERNE, CALIFORNIA USA 3 3/L BALANCED OUT 4 3/R 2 5 1 A4/VCD A3/LD A2/CDG 6 V3/LD A1/DVD V1/DVD 7 1 9 SERIAL NUMBER MIC OUT ONLY VIDEO IN VIDEO OUT ANT 2 www.vocopro.com AUDIO OUT VIDEO IN V4/VCV V2/CDG ! CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT REMOVE COVER SCREWS NO USER-SERVICEABLE PARTS INSIDE.
Microphone Descriptions and Functions 5. WINDSCREEN/CAPSULE 1. POWER LED 2. 3. CHARGE LED POWER SWITCH 4. BATTERY COMPARTMENT 1. POWER LED indicator – This LED lights up when the microphone is turned on and in use. 2. POWER switch – This switch turns the microphone ON/OFF. 3. CHARGE LED indicator – This LED lights up when the microphone is being charged. 4. BATTERY compartment – This is where you insert the microphone batteries. 5.
Replacing/Recharging the Microphone Batteries Replacing Microphone Batteries • Unscrew the BATTERY COMPARTMENT cap by twisting it counter-clockwise. BATTERY COMPARTMENT BATTERY LID • Insert 2 new RECHARGEABLE AA batteries into the BATTERY COMPARTMENT with the polarities matched as shown in the diagram located in the compartment. BATTERY COMPARTMENT BATTERIES • Replace and retighten the BATTERY COMPARTMENT cap by twisting it clockwise.
Getting Connected Connecting A/V Source Players to the DA-2277 For each A/V source player, you will need an A/V patch cable (red, white and yellow plugs). • Connect one set of red and white plugs to the AUDIO OUT jacks on your source player and the yellow plug to the VIDEO OUT jack on your source player.
Getting Connected Connecting Video to Display Devices • For each VIDEO OUT connection, connect a single RCA patch cable from the VIDEO IN jack on your display device to the VIDEO OUT (1 or 2) jack on the DA-2277. • If the TV does not have a VIDEO INPUT jack you may connect that end of the cable to the VIDEO INPUT of a VCR and connect the RF OUTPUT of the VCR to the TV ANTENNA INPUT jack. • If there is no VCR present, you will need to use an RF Modulator.
Understanding and Avoiding VHF Interference Recognizing Interference The ways of recognizing the type of interference present are observing the receiver LED indications and carefully listening to the audio. A set of headphones can be a useful tool in isolating and analyzing interference problems. With headphones it is easier to listen to one wireless channel at a time, even when the system is in use. Below are some interference descriptions.
Understanding and Avoiding VHF Interference Avoiding Basic Problems Sometimes interference problems have very basic causes. To avoid wasting time on an easily correctable problem, check the following items before proceeding: • Make certain than no radio transmitters are allowed to come closer than approximately 10 to 15 feet of the wireless receiver antennas. This can overload the receiver and increase the chances of interference.
Understanding and Avoiding VHF Interference Frequency Conflicts There are two primary ways that other wireless systems and TV channels cause interference. The first is a direct frequency conflict. If two wireless systems are on the same frequency, usually neither system will be usable unless the other is turned off. This problem is more common than might be expected, especially when all the equipment is the same type. This is because most systems have only a limited number of standard frequencies.
Troubleshooting PROBLEMS Battery is running low even when just charged. CAUSE SOLUTIONS The microphone is not recharging Reinsert the microphone into the because it is not placed in the recharging terminal and gently turn it till recharging terminal correctly. the CHARGING LED indicator is illuminated. Battery is not fully recharged Replace with new rechargeable batteries. after 8 hours of recharging due to it being too old. No sound output. Microphone output is low.
Glossary of Terms Digital Echo - Digital echo is a synthetically processed sound effect that mimics natural echo. Echo in general is the "bouncing" of waves back and forth between 2 surfaces. This effect gives a spacious or ambient feeling that works great with vocals. Repeat - Repeat is facet of the echo process. Repeat refers to the frequency of echoes within a period of time. Delay - Delay is also a facet of the echo process. Delay refers to the amount of time that exists between echoes.
Glossary of Terms A/V - A/V is an abbreviation for Audio/Visual. Y-Adapter - Any type of connection that splits a signal into two parts. An example would be a connector with one male RCA jack on one end, and two female RCA jacks on the other end. Woofer - A speaker, (driver), used for low-frequency reproduction. Usually larger and heavier than a midrange or tweeter. Midrange - A speaker, (driver), used to reproduce the middle range of frequencies.
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