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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  

 

30 

40 

50 

60 

70 

80 

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  

 

90 

100 

120 

140 

180 

Example 

 

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 

 

Listening for a Lifetime

Summary of Contents for VHF-4000

Page 1: ...VHF 4000 Professional Quad VHF Wireless Microphone System o w n e r s m a n u a l...

Page 2: ...2 Safety Instructions 3 FCC Information 4 Welcome 5 Listening for a Lifetime 6 Getting Started 7 Getting Connected 8 Descriptions and Functions 9 Commonly Asked Questions 10 Table of Contents...

Page 3: ...luding 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 Groun...

Page 4: ...ce 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 electric motors To p...

Page 5: ...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...

Page 6: ...ay 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...

Page 7: ...7 Getting Started WHAT S IN THE BOX VHF 4000 Receiver 4 VHF 4000 Microphones Power Adapter 1 4 to 1 4 Cable...

Page 8: ...to the desired input on your mixer Note To avoid confusion it s recommended that the XLR jacks are attached correspondingly e g CH 1 to CH 1 CH 2 to CH 2 etc as shown 4 Repeat steps 2 and 3 until all...

Page 9: ...r connects 2 Mixed Output This 1 4 jack outputs the signal of all four microphone channels 3 Independent XLR Channel Outputs These four balanced jacks output audio from each channel independently MICR...

Page 10: ...ation issues 3 Will this unit interfere with other wireless microphone systems I have So long as the frequency numbers do not match with any other microphone system being used there will be no interfe...

Page 11: ...11 Notes...

Page 12: ...VHF 4000 Owner s Manual VocoPro 2014 v1 1106 www vocopro com...

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