VocoPro Microphone UHF 6800 User Manual

THE SINGER'S ULTIMATE CHOICE

UHF-6800

UHF PLL 100-Frequency Dual-Channel Wireless Microphone System

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Welcome

And Thank you for purchasing the UHF-6800 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, 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

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Features and speciﬁcations

Features

• UHF System ranges from 700MHz - 850MHz

• Two mic channels each with individual volume controls

• PLL synthesized for an even clearer signal

• 100 manually switchable frequency channels to avoid interference

• Individual Balanced XLR outputs and one ¼” Mixed output

• Individual Squelch controls for each channel

• Detachable antennas

• LCD displays on mics and receiver

• Low battery indicator on each mic

• Rack-mountable in 19” rackcase and requires just 1 RU

Speciﬁcations

Frequency range.............................................. 620-950MHz

Band range..................................................... 25MHz

Frequency stability ........................................... ±0.005%

Active range ................................................... 110dB

Peak frequency................................................ ±45KHz

Frequency response......................................... 60Hz-18KHz (±3dB)

Noise ratio ..................................................... >105dB

Default ratio.................................................... <0.5%

Receiver

Wireless input................................................. BNC Jack

Sensitivity ....................................................... 12dB(80dBs / N)

Noise limit ...................................................... 0 - 40dB

Noise resistance ............................................. >80dB

Frequency/output: Unbalanced.......................... +4dB(1.2V) / 5K Ohms

Balance.......................................................... +10dB(2.5V) / 600 Ohms

Voltage........................................................... DC11 - 16V

Current:

Single Channel............................................ 200mA

Dual Channel.............................................. 350mA

Microphone (Transmitter)

Output power.................................................. 30mW/5mW (HI/LO switch)

Noise resistance ............................................. --60dB

Battery .......................................................... AA x 2

Current.......................................................... <80WA (low powered);

<110MA (high powered)

NOTE: All information is subject to change without prior notice

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Getting started

Mounting the UHF-6800

The UHF-6800 can be mounted into a 19” rackcase and requires 1 RU(1.75”) of available rackspace.

What you will need:

• 19” Rack case (not included)

• 1 RU of available rack space

• 4 Mounting screws (not included)

• Phillips-head screwdriver (not included)

To mount:

1. Carefully line up the holes on the UHF-6800’s rack ears with holes on your rack case.

2. Screw in the mounting screws in an “X” formation to ensure even alignment and tension.

Mounting

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Getting started cont.

Connecting the Antennas

1. Screw on each antennae to the BNC connectors on the front of the UHF-6800. Twist clockwise until it is secure.

Antennas

Connecting the AC adapter

Caution: Before connecting the power supply, make sure that the power switch on the reciever is switched OFF.

Note: For additional protection, it is recommended that you plug in the power supply to a surge protector/Power strip.

1. Connect the output end to the AC Power input on the rear panel of the UHF-6800.

2. Connect the AC adapter to a power outlet.

NOTE: It is recommended that you connect to a power strip/surge-protector for added protection.

Installing New Batteries

NOTE: The UHF-6800 requires 2 AA rechargeable batteries.

To install:

1. Slide off the battery compartment cover completely until the battery slots are exposed (Fig. A).

2. Insert both batteries and make sure that their polarities are facing the proper direction (Fig. B).

3. Reattach the battery compartment cover by sliding it back on until it is secure again.

Batteries

Fig. A

Fig. B

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Getting started cont.

Setting Up on Stage

If you will be using the UHF-6800 with stage monitors and/or a 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.

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Getting connected

The UHF-6800 gives you two options for outputting vocals

1. Each channel independently using the BALANCED A and B XLR outputs

2. Each channel together using the MIXED ¼” output

There are a number of ways to integrate the UHF-6800 into your audio system:

Connecting to a Mixer

Connect each mic channel to separate channels on the mixer using the BALANCED XLR outputs (Fig. A) or output both

channels to a single input using the MIXED ¼” output (Fig. B).

Mixer

Fig. A

PKJ-9090

UHF-6800

Fig. B

Connecting to an All-In-One System

Using a ¼” cable, connect the MIXED output to a ¼” mic input on your all-in-one system.

All-In-One System

GIG-MASTER

UHF-6800

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Front panel controls and functions

Front Panel

3 4 5

1. Display LCD screens - Displays the Frequency/Channel number and UHF signal strength for each microphone

channel.

2. Arrow buttons - Use to navigate through the Frequency/Channel select menu on the receiver, when choosing a

frequency for each channel.

3. SET button - Use to make a selection when navigating through the Frequency/Channel select menu on the receiver.

4. Volume controls - Controls the volume for each mic channel. Turn clockwise to raise volume and counter-clockwise

to lower the volume.

5. Power button - Turns the UHF-6800’s receiver on and off. Press once to turn the receiver on and hold down for 3

seconds to turn the receiver off.

6. Antenna connectors - Connect antennas here. See the “Connecting the Antennas” section for instructions on

connecting the antennas.

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Rear panel controls and functions

Rear Panel

1. AC Power jack - Main power jack for connection to an AC electrical outlet or power strip/surge protector.

2. Squelch controls - Use this to adjust the squelch to limit unwanted interference. See the “Adjusting the Squelch”

section of this manual for instructions on when and how to adjust the squelch level.

3. Balanced A and B outputs - Outputs each mic channel independently using a Balanced XLR microphone cable.

4. MIXED output - Outputs both mic channels together using a ¼” microphone cable.

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Microphone control functions

1. Grill - Protects the microphone cartridge and helps

Microphone

reduce “breathy” and wind noise pick-up.

2. Display Screen - Displays the microphone’s current

Frequency/Channel and the batteries’ charge level.

3. Up and Down (^ and v) buttons - Use to navigate

through the Frequency/Channel select menu on the

microphone, when choosing a frequency.

4. 0 (select) button - Use to make a selection when

navigating through the Frequency/Channel select menu

on the receiver.

5. Power switch - Turns the microphone on and off. Slide

up to turn the mic on and slide down to turn the mic

off.

6. Battery compartment - Removable lid hides and

protects the microphone battery.

7. RF Power HI / LOW switch - Allows you to set the RF

power level. Set to Low when you are in a smaller

room and the mic is relatively close to the receiver (i.e.

living room and small stage). Set to High, to increase

the RF power level when the singer is a farther distance

away from the receiver (i.e. large stages and clubs).

8. Microphone Lock switch - Switch On to lock the ^ and

v buttons on the mic so that the singer does not

accidentally change the frequency while holding the

mic. Switch the lock Off when changing the

microphone’s frequency.

FRONT

BACK

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Microphone basics

Microphone Position

The UHF-6800 is ideal for close-up vocals and can be held in the hand or mounted on a mic stand. Keep in mind that

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

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)

• 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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Operations

Turning On/Off the UHF-6800 Receiver

NOTE: Before turning on the UHF-6800’s power, be sure that it is plugged into a power source. For maximum protec-

tion, use a power strip or surge protector.

To power on:

1. Hold down the POWER button for 2 seconds while the unit is on.

To power off:

1. Hold down the POWER button for 2 seconds

Turning On/Off the UHF-6800 Mic

Slide the power switch to the ON position to turn the mic on and slide it to the OFF position to turn the mic off.

Power Switch

Balancing the Volume

Use the mic volume controls on the front to adjust the balance of the two mic channels. Turn the controls clockwise to

raise the volume and counter-clockwise to lower the volume.

Volume Controls

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Operations cont.

Selecting a Frequency

NOTES:

• When selecting a frequency, the frequency on the receiver must match the frequency on the mic. Mic Channel A and

Mic Channel B must be set to different frequencies.

• Make sure that the LOCK is set to OFF on the microphone and the receiver. See the “Locking the Frequency” section

in this manual to lock and unlock the frequency.

Setting the Receiver’s frequency

1. Select the mic channel that you are selecting a frequency for; either Microphone Channel A or Microphone Channel B.

Press the LEFT arrow button to choose mic channel A or the RIGHT arrow button to choose mic channel B.

2. The LCD screen for the selected mic channel will begin blinking.

3. Use the UP and DOWN arrow buttons to scroll up and down through the 100 different frequencies.

4. When you ﬁnd the desired frequency, press the SET button to set it as the current frequency for that channel.

5. Now repeat the above steps with the other Mic Channel.

Setting the Microphone’s frequency

1. Press the UP and Down buttons on the microphone to scroll through the available frequencies.

2. Press the center circle button on the microphone to select the desired frequency.

3. The number will stop blinking and the frequency will be set.

Changing the Display

The UHF-6800 gives you the option of viewing the actual frequency number or the frequency channel number.

Frequency number: 740.000 - 765.000 in increments of .250

Channel number: Channel 000 - Channel 100

NOTE: The frequency numbers are subject to change and may be different on your UHF-6800

To change the display option on the Receiver

1. Choose which mic channel that you are changing the display for, either Microphone Channel A or Microphone Channel

B. Press the LEFT arrow button to choose mic channel A or the RIGHT arrow button to choose mic channel B.

2. The LCD screen for the chosen mic channel will begin blinking.

3. Press the SET button once.

4. The word “DISPLAY” while quickly ﬂash

5. Press the UP arrow button to select “Frequency number” or press the DOWN arrow button to select “Channel

number”.

6. Press the SET button to set the selection.

To change the display option on the Microphone

1. Press the center circle button once on the microphone.

2. The word DISPL (display) will quickly ﬂash on the microphone’s LCD screen

3. Press the UP arrow button to select “Frequency number” or press the DOWN arrow button to select “Channel

number”.

4. Press the center circle button again to set the display option.

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Operations cont.

Frequency

By locking a frequency, you can prevent the user from accidentally changing the frequency.

To lock the frequency on the Receiver

1. Choose which mic channel that you are changing the display for, either Microphone Channel A or Microphone Channel

B. Press the LEFT arrow button to choose mic channel A or the RIGHT arrow button to choose mic channel B.

2. The LCD screen for the chosen mic channel will begin blinking.

3. Press the SET button twice.

4. The word “LOCK” will quickly ﬂash.

5. Press the UP arrow button to turn the lock ON or press the DOWN arrow button to turn the lock OFF.

6. Press the SET button to set the selection.

To lock the frequency on the Microphone

1. Slide off the battery compartment cover. The lock switch is located on the lower right hand corner in the battery

compartment and is titled LOC (lock).

2. Flip the switch up to turn the lock ON and ﬂip the switch down to turn the lock OFF.

Lock Switch

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Operations cont.

Adjusting the Squelch

If you are experiencing signal interference, try turning the squelch higher to eliminate unwanted interference signals.

Squelch isolates the strongest signals and cuts out the weaker ones.

To adjust the squelch:

1. Using a small ﬂat-head screwdriver, adjust the squelch by turning clockwise to increase it and counter-clockwise to

decrease it.

NOTE: Only increase the squelch when absolutely necessary as increasing the squelch may lower the overall volume of

the vocals.

Setting the RF Power level

There are two possible settings for the RF Power: High and Low. The RF Power level switch is located inside the battery

compartment of each microphone.

To set the RF Power level:

1. Open the battery compartment by sliding off the battery compartment cover.

2. Switch the RF Power Level depending on your set up.

Set the RF Power level to Low for home use, small stages and other situations where the singer is relatively close to the

receiver. Set the RF Power level to High when the singer/microphone is further away from the receiver such as on a

large stage, large backyard or club.

NOTE: The battery will run out quicker when the RF Power is set to High, so only set to High when necessary.

Squelch/HI-LOW

Squelch

HI-LOW

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Troubleshooting

No sound output

• Make sure the microphone and receiver power switches are set to the ON position.

• Check microphone batteries to ensure that they are providing sufﬁcient power. Let battery charge or replace if

necessary.

• Check receiver’s AC power connection.

• Make sure antennas are ﬁrmly connected and extended to an optimal position.

• If necessary, reduce the distance between the microphones 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 signal LED’s on the display screen. If they glow, the problem

is elsewhere in the sound system.

• Make sure the mic and its corresponding receiver channel are set to the same frequency.

Received signal is noisy or contains extraneous sounds with the microphone(s) ON

• Check microphone(s) batteries and recharge or replace if the charge is low.

• Remove local sources of UHF interference, such as lighting equipment.

• Signal may be too weak. If so, reposition antennas. If possible, move them closer to the transmitter.

• Try increasing the “Squelch” in the receiver

• Try setting the RF Power Level to HIGH. he RF Power Level switch is located inside the battery compartment of

each microphone. See the instuctions for “Setting the RF Power Level” in this manual.

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.

Battery running low even after recharging

• Replace rechargeable batteries (rechargeable batteries have a life of 500 hours of charging and recharging).

The Mic is switched on and the mic’s display screen is on but there is no sound

• Make sure the mic and its corresponding receiver channel are set to the same frequency.

• Make sure the volume on the receiver is turned up.

The microphone is switched on but its display screen is not on

• Replace or recharge the mic’s batteries

The vocals become weaker as I walk further away from the receiver

• Switch the RF Power Level to HIGH. The RF Power Level switch is located inside the battery compartment of each

microphone. See the instuctions for “Setting the RF Power Level” in this manual.

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THE SINGER'S ULTIMATE CHOICE

VOCOPRO 2006

Version 1.0

www.vocopro.com

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