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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.

Microphone Position

The UHF-3800 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, there is no one "correct" microphone position.

Proximity Effect

When the sound source is less than 1/4 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-3800.

Feedback

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

any open microphone and is amplified again and again and again. 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 Basics

5

Summary of Contents for UHF-3800

Page 1: ... 8 Channel UHF Dual Wireless Microphone System POWER LEVEL A LEVEL B AF AF 30 15 5 0 5 15 30 15 5 0 5 15 8 Channel Dual UHF Wireless Microphone System ANT A ANT B ...

Page 2: ...r other appliances including amplifiers that produce heat 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 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...

Page 3: ...728 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 info vocopro com Tech Support techsupport vocopro com Remember Our Website Be sure to visit the VocoPro website www vocopro com for the latest information on new products packages and promo s And while you re there don t fo rget to check ...

Page 4: ... ...

Page 5: ...ave 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 un...

Page 6: ...d richer bass sound than when farther away This effect known as proximity effect happens only in unidirectional dynamic microphones like the UHF 3800 Feedback Feedback occurs when the amplified sound from any loudspeaker reenters the sound system through any open microphone and is amplified again and again and again Most commonly feedback is caused by the following conditions placing loudspeakers ...

Page 7: ... ...

Page 8: ... POWER LEVEL A LEVEL B AF AF 30 15 5 0 5 15 30 15 5 0 5 15 8 Channel Dual UHF Wireless Microphone System ANT A ANT B ...

Page 9: ...t to the same pre set For example if this is set to 1 both mics must also have their channels set to 1 to work 9 FUSE terminal This terminal houses the system fuse Only replace with same type rating of fuse 10 VOLTAGE selector Selects between 110 120V and 220 240V power settings 11 AC POWER terminal MAINS POWER jack for connection to a compatible AC outlet POWER LEVEL A LEVEL B AF AF 30 15 5 0 5 1...

Page 10: ... LED ANT MIC A ON OFF STANDBY ...

Page 11: ... rear panel first 3 While aligned use rack case screws not included in the order shown below to stabilize the UHF 3800 in its space using the X rotation numbered below will ensure even tension and plush alignment See diagram below NOTE Depending on your rack case design it may be necessary to allow for sufficient space for the antennas NOTE Do not tighten screws firmly until all screws are in plac...

Page 12: ...V DC 12V 2A FUSE AC INPUT AC 110V 240V 50 60Hz 1 5A CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN TO REDUCE THE RISK OF FIRE REPLACE ONLY WITH THE SAME TYPE AND RATING OF FUSE UTILISER UN FUSIBLE DE RECHANGE DE MEMETYPE AC110V AC240V VOLTAGE SELECTOR www vocopro com POWER LEVEL A LEVEL B AF AF 30 15 5 0 5 15 30 15 5 0 5 15 8 Channel Dual UHF Wireless Microphone System ANT A ANT B ...

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Page 16: ...y glow the problem is elsewhere in the sound system Received signal is noisy or contains extraneous sounds with the microphone s ON Check microphone s batteries and replace if 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 Noise coming from the receiver with the micro...

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Page 18: ...www vocopro com UHF 3800 Owner s Manual version 2 VocoPro 2007 ...

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