VocoPro Microphone UHF 8800 User Manual

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UHF-8800

8 Channel UHF Wireless Microphone System

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FCC Information

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 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.

4. Never open the cabinet. If a foreign object drops into

the set, contact your dealer.

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

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

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 ensure

that the apparatus is indeed fully void of residual power,

leave unit disconnected from the AC outlet for at least

fifteen seconds.

Voltage Selector (General Model Only)

Be sure to position the voltage selector to match the

voltage of your local power lines before installing the

unit.

110V

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Listening for a Lifetime

Selecting fine audio equipment such as the unit youʼve just purchased is only the start of your

musical enjoyment. Now itʼs time to consider how you can maximize the fun and excitement your

equipment offers. VocoPro and the Electronic Industries Associationʼs 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 Associationʼs 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

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

100

120

140

180

Subway, Motorcycle, Truck traffic, Lawn Mower

Garbage truck, Chainsaw, Pneumatics drill

Rock band concert in front of speakers

Gunshot blast, Jet plane

Rocket launching pad

-Information courtesy of the Deafness Research Foundation

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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.

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.

WARNING

To reduce the risk of fire or electric shock, do

not expose this unit to rain or moisture.

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 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.

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Welcome

And thank you for purchasing the UHF-8800 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 reinforce our commitment

to customer satisfaction, we have customer service and technical support professionals

ready to assist you with your needs. We have provided some contact information for

you below.

VocoPro

1728 Curtiss Court

La Verne, CA 91750

Toll Free: 800-678-5348

TEL: 909-593-8893

FAX: 909-593-8890

VocoPro Company Email Directory

Customer Service & General Information

[email protected]

Tech Support

[email protected]

Remember Our Website

Be sure to visit the VocoPro website www.vocopro.com for the latest information on

new products, packages and promos. And while you're there don't forget to check out

our Club VocoPro for Karaoke news and events, chat rooms, club directories and even

a KJ Service directory!

We look forward to hearing you sound like a PRO, with VocoPro, the singer’s ultimate

choice.

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

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Speciﬁcations

Receiver

Oscillation Mode: Quartz Controlled Fixed Frequency

Stability: 10 PPM

Sensitivity: 1.6uV @ sinad =12dB

Max. Deviation Range: 50Hz

S/N Ratio:>105dB

T.H.D.: <0.5% @ 1kHz

Image rejection: 85dB typical

Spurious Rejection: 75dB typical

Frequency Response: 40Hz~16kHz

Squelch Control: dual-squelch circuit

Max. Output Level: Balance: 0~400mV, Unbalance: 0~200mV

Power Supply: External DC Power Supply, 1.2A, 12~18V DC

Dimensions: 19”(L) x 3.5”(H) x 8.7”(D)

Transmitter (Handheld)

Transmitter Power: 30mV

Spurious Emission: <40dB(with carrier)

Battery Voltage: AA 1.5V*2

Battery Life: 12 hours

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Getting Started

Thank you for purchasing the UHF-8800. Take a few moments to look through this manual. Before setting up, please

make sure the following items are included.

• UHF-8800

• 8 Wireless Mics

• Carrying Case

• Power Adapter

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Returns and Warranty

In the unlikely event that the UHF-8800 would need to be shipped for repair, it is recommended that you keep all the

product packaging and receipt. For detailed warranty information, please visit www.vocopro.com/warranty_extended.html.

To ﬁnd a VocoPro Authorized Service Center near you, please visit www.vocopro.com/servicecente r .html

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Microphone Basics

Microphone Position

The UHF-8800 is ideal for close-up vocals and can be held in the hand or mounted on a mic stand. The

most common applications and placement techniques are listed below. Keep in mind that microphone

technique is largely a matter of personal taste, and there is no one “correct” microphone position.

Proximity Effect

When the sound source is less than ¼ in. from the microphone, the microphone boosts bass frequencies

(by 6 to 10 dB at 100 Hz), creating a warmer and richer bass sound than when farther away. This effect,

known as proximity effect, happens only in unidirectional dynamic microphones like the UHF-8800.

Feedback

Feedback occurs when the amplified sound from any loudspeaker reenters the sound system through

any open microphone and is repeatedly amplified. Most commonly, feedback is caused by the following

conditions: placing loudspeakers too close to microphones, having too many open active microphones,

boosting tone controls indiscriminately (mainly treble) and performing in areas with high ratios of room

surfaces that have hard and reflective surfaces such as glass, marble and wood. What to do if feedback

occurs before the sound system is loud enough?

• Request that the talker speak louder into the microphone.

• Reduce the distance from the talker to the microphone. Each time this

distance is halved, the sound system output will increase by 6dB.

• Reduce the number of open microphones.

• Move the loudspeaker farther away from the microphone. Each time this

distance is doubled, the sound system output can be increased by 6dB.

• Move the loudspeaker closer to the listener.

• Use an equalizer/feedback reducer to cut the frequency bands in which

the feedback occurs.

Microphone Placement & Tone Quality

Lead & Backup Vocals

Lips should be less than 3” from or even touching the windscreen on an axis to the microphone. Doing this

creates a robust sound, emphasizes bass and provides maximum isolation from other sources.

Speech

When giving a speech or simply speaking, place the microphone 4” to 10” away from the mouth, just above

nose height for a natural sound with reduced bass. You can also place the microphone 8” to 16” away from

the mouth, slightly off to one side, for a more “distant” sound with highly reduced bass and minimal “s”

sounds.

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Mounting

To install the UHF-8800 to a 19” rack case, complete the steps below.

1. Align the UHF-8800 with the desired space in rack and slowly slide in, rear panel first.

NOTE: Depending on your rack case design, it may be neces-

sary to allow for sufficient space for the antennas.

2. While aligned, use rack case screws (not included) in the order shown below to stabilize the UHF-8800 in

its space, using the “X” rotation (numbered below) will ensure even tension and plush alignment.

NOTE: Do not tighten screws firmly until all screws are in place.

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Getting Connected

System Connection

1. Connect the AC POWER ADAPTER to the UHF-8800 receiver’s POWER INPUT connector, then

plug the ADAPTER into a compatible AC electrical outlet.

2. Connect the UHF-8800’s receiver to a sound system, mixer or amplifier’s microphone input(s) with

either two ¼” output jack for a mixed channel output, or up to eight XLR output jacks for separate

output for each mic.

DSP ECHO

UHF-8800

CHANNEL

MIN MAX

CHANNEL

MIN MAX

CHANNEL

V.CANCEL

V.PARTNER

UHF-8800

TAPE REC.

Professional

Channel UHF Wireless Mic System

VOCAL CANCEL/PARTNER

SINGLE CHANNEL WIRELESS MICROPHONE RECEIVER MODULE

OUT

DSP

REVERB

SONIC

ENHANCER

POWER

CHANNEL

ANT-IN

POWER

SINGLE CHANNEL WIRELESS MICROPHONE RECEIVER MODULE

LEVEL

LOW

HIGH

Deciding Between Mixed or Separate Output

Mixed Channel Output

Pro: Uses only 2 mic input on an external mixer/amplifier.

Con: External mic adjustments are only applied to all mic channels.

Separate Channel Output

Pro: External mic adjustments can be applied on one or all mic channels.

Con: Uses up up to 8 mic inputs on mixer/amplifer.

Antenna Connection

Place antenna’s TNC connector on the TNC jack and twist clockwise to fasten.

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Descriptions and Functions

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1. ANTENNAS - Provide both RF and AF signals.

2. POWER (LED) - Indicates whether the UHF-8800 is ON or OFF. When it is lit, the power is ON.

3. RF (LED) - Lights when RF signals are received from the microphone channels.

4. AF (LED) - Lights when AF signals are received from the microphone channels.

5. SQUELCH controls - Manual controls for controlling each microphone’s signal strength for best

performance. Turn clockwise to increase SQUELCH control and turn counter-clockwise to decrease

SQUELCH application.

6. VOLUME controls - Adjusts the individual VOLUME of the receiver’s 4 microphone channels.

7. MICROPHONE modules - Contains the SQUELCH and VOLUME controls for each of the 4 wireless micro-

phones. Each module can be easily removed individually.

8. POWER button - Turns the UHF-8800 ON/OFF.

9. AC POWER connection - Main power jack for connection to an AC electrical outlet or power strip/surge

protector.

10. MIXED OUTPUT (1-4) - This ¼” unbalanced output jack is for output connection to amplifiers, effects

devices or mixers. All mic channels are output through this jack for mixed output.

11. MIXED OUTPUT (5-8) - This ¼” unbalanced output jack is for output connection to amplifiers, effects

devices or mixers. All mic channels are output through this jack for mixed output.

12. XLR AUDIO OUTS - These XLR balanced output jacks are for output connections to amplifiers, effects

devices or mixers. These are for separate mic channel connections with unmixed mic output.

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Maintenance Procedures

Handheld Microphone Battery Installation

1. To remove the lid, press down on the tab and slide the lid down towards the bottom of the mic.

2. Insert 2 fresh 1.5-volt AA alkaline batteries. Make sure the batteries are inserted in the right direction

according to polarity (+/-).

3. Close the BATTERY COMPARTMENT lid.

Removing the Field Replaceable Modules

Each of the 8 microphone modules on the UFH-8800 were designed in a way that allows them to slide out

without the need for any special tools. This is a convenient feature if ever a module needs to be repaired or

replaced.

Although tools are not necessary it might be helpful to use a flat-head screwdriver to nudge the module out

of its compartment.

1. To remove, simply slide the module out of the compartment

2. To re-insert, slide the module into compartment until it is completely secured

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UHF-8800 & stage monitor/p.a. loudspeakers

If you will be using the UHF-8800 with stage monitors and/or P.A. system, try the following:

• Place the stage monitor directly behind the microphone.

• Locate the P.A. loudspeakers so that they point away from the rear of the microphone. (With the speakers

located in these positions, the possibility of feedback is greatly reduced).

• Always check the stage setup before a performance to ensure optimum placement of microphone and

monitors.

IMPORTANT: Every wireless microphone installation is a unique situation, and can present a variety of

problems. Never attempt a live performance without first conducting a “walkthrough” test of the system in

the performing area. If major changes (additional wireless systems or intercoms, relocation of scenery, etc.)

have been made since the last walk-through test, check the wireless system again, as close to performance

time as possible.

P.A. Speakers Facing Away

From Rear of Microphone

Monitor Directly Behind

Microphone

Operations

1. Press the POWER button on the UHF-8800 receiver’s front panel.

2. Adjust the receiver’s VOLUME controls to approximately 50%.

3. Switch the microphone’s POWER BUTTONS to the ON positions.

4. Talk or sing into the microphones. During normal operation, the RF/AF signal LED’s will light when a

microphone is being used.

5. Adjust the receiver’s VOLUME controls until the output levels are balanced with eachother and other

possible source output i.e. CD+G tracks.

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Troubleshooting

Problems

Solutions

No sound output, RF/AF LED(s) are not glowing

• Make sure the microphone and receiver power

switches and receiver are set to the ON position.

• Check microphone batteries to ensure that they are

providing sufficient power. Replace battery if neces-

sary.

• Check receiver’s AC power connection.

• Make sure antennas are firmly connected and ex-

tended to an optimal position.

• If necessary, reduce the distance between the mi-

crophones and receiver.

• Turn up the receiver’s VOLUME level controls.

• Check for proper connection between receiver and

external amplifier/mixer.

• Talk into the microphone and observe the receiver’s

RF/AF signal LED’s. If they glow, the problem is else-

where in the sound system.

Received signal is noisy or contains extraneous

sounds with the microphone(s) ON.

• Check microphone(s) batteries and replace if the

charge is low.

• Remove local sources of UHF interference, such as

lighting equipment.

• Adjust the squelch controls on the front of the UHF-

8800 receiver.

• Signal may be too weak. If so, reposition antennas.

(If possible, move them closer to the transmitter).

There is noise coming from the receiver with the

microphones turned OFF.

• Remove local sources of UHF interference, such

as lighting equipment.

• Reposition the receiver or antennas.

Momentary loss of sound as microphone(s) are

moved throughout the operating range.

• Reposition the receiver, perform a “walkthrough”,

and observe the signal strengths. If audio dropouts

persist, mark these “dead spots” in the operating

area and avoid them during the performance.

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UHF-8800 Owner’s Manual

v1.0

www.vocopro.com

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