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Maerst

Waist Hanged Rechargeable Portable Voice Amplifier

Digg(105) ( 10 Reviews)
       
US $48.39
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Price USD$ 46.94 USD$ 46.45 Wholesale Price >>
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Maybe you're a lecturer, teacher, exercise instructor or presenter. You are looking for a Rechargeable Voice Amplifier. Come on! We will give you a good Voice Amplifier. This Portable Voice Amplifier can give you the freedom to go around your stages or classroom at your will with no leads or cords attaching you to one point. Broadband sound quality speakers, sound quality has improved significantly. This Rechargeable Voice Amplifier will be your good partner and friend. Adopt ABS engineering plastic, impact resistance, tone clear, Applicable area of 400 square meters, Battery (lithium battery) use time long, can reach 15 hours ,Battery life can reach 2-3 years. Cooperate with wearing type microphone,Amplification effect is good,Easy to use, can make MP3 player.Of course you can buy it for your friends as a gift. They also will love it.
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Product Description

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  • Specifications:

    • Output Power: RMS12W
    • Frequency Response: 100HZ ~ 13,000 HZ + 1db
    • Consumption Current: 150mA
    • Voltage: DC 7.5, li-ion battery
    • Battery Type: Lithium Battery
    • Size: 105 x 84 x 35mm / 4.1 x 3.3 x 1.4in(L x H x T)

    Features:

    • The Rechargeable Voice Amplifier adopts ABS engineering plastic, impact resistance
    • Tone clear
    • Applicable area of 400 square meters
    • This Portable Voice Amplifier gives you the freedom to move around your stage or classroom at your will with no leads or cords attaching you to one point
    • Battery (lithium battery) use time long, can reach 15 hours ,Battery life  can reach 2-3 years
    • Cooperate with wearing type microphone
    • Amplification effect is good
    • Easy to use, can make MP3 player

    Details:

    Maerst Waist Hanged Rechargeable Portable Voice Amplifier

    • This Rechargeable Voice Amplifier gives you the freedom to move around your stage or classroom at your will with no leads or cords attaching you to one point

    Rechargeable Voice Amplifier

    • Applicable area of 400 square meters
    • This Rechargeable Voice Amplifier will be your good partner

    Portable Voice Amplifier

    • Battery (lithium battery) use time long, can reach 15 hours

    Size in Detail:

    Voice Amplifier

    Audio Amplifier Technology:

    Audio amplifiers feed electric power to speakers to reproduce music or other sounds at a wide range of volume and frequency levels, according to Audioholics A/V Magazine. These devices build up a "storehouse" of electrical power, then release that power in a way that precisely replicates the original sound wave pattern it receives from a playback device. The best amplifiers perform to exacting specifications, delivering as little sound distortion as possible to the speakers.

    Operation

    • Amplifiers make use of an exterior alternating current, or AC power source, collecting the power from an ordinary wall outlet and storing it up in a set of capacitors. It also receives a second, weaker AC signal that contains the audio sound wave information from the music player. The weaker signal from the input stage "tells" the the output stage how much electricity to release from the amplifier's stores, recreating the sound waves in a more powerful form to drive audio speakers.

    Types

    • Amplifiers use either vacuum tubes or solid-state transistors to modulate their signals, according to Audioholics. While both technologies create a certain unavoidable amount of distortion as the amplifier adds more power to the audio signal, tube amplifiers tend to distort in a more harmonically agreeable way than solid-state amplifiers which tend to add a harsh, unmusical distortion known as "clipping."

    Classes

    • Manufacturers construct different classes of amplifiers that offer different levels of power efficiency. Class A amplifiers send a constant flow of power through the output transistors, resulting in low distortion but high heat and just 20 percent efficiency. Class B amplifiers divide the waveform reproduction between two alternating output transistors that shut off completely when so signal reaches them, yielding up to 70 percent efficiency. Class A/B amplifiers allow the switching between transistors to overlap slightly, reducing potential distortion but reducing efficiency to 50 percent. Class D amplifiers, which use ultra-high frequencies to regulate switching operations, offer efficiencies of up to 90 percent.

    Performance Measurements

    • The best amplifiers perform to precise frequency, distortion and power measurements. Audio enthusiasts look for the flatness of the amplifier's frequency response indicating that the device performs evenly throughout all the frequencies from 20 Hertz and 20,000 Hertz. They also prize a harmonic distortion level under 0.5 percent, the level in which any distortion the amplifier introduces becomes inaudible underneath the music. Power levels of at least 50 to 100 watts per channel enable the amplifier to handle a wide dynamic range without distortion.

    Power Considerations

    • Audiophiles shopping for an amplifier should look for a unit that delivers sufficient wattage per channel for their speakers. Lower-powered amplifiers can actually do more to harm to a speaker system than higher-powered ones. An amplifier that delivers only 10 watts per speaker channel or instance, will lose its ability to feed distortion-free AC signal to the speakers relatively quickly, distorting or "clipping" the audio signal into raw DC current that can destroy the delicate wires that transfer signals to the speakers' voice coils.

    Package Included:

    • 1 x Host
    • 1 x Microphone
    • 1 x Belt
    • 1 x Charger
    • 1 x Manual


Customers' Reviews

Overall:
  ( 10 Reviews)
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I have bought this product

m.b.tilak

from (Hyderabad. India)

Bought this item on

08-24-2011
  • Pros: Crystal clear sound No whistling sounds. Once the battery is charged full it is lasting for long hours (about 13 to 14 teaching hrs
  • Cons: Little bit heavier
  • Other Thoughts: I am very happy in using it my class room teaching. The students also felt happy and insisting the other teaching staff to buy the same. I recommend this item to teachers

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william robinson

Bought this item on

06-13-2011
00:00:00 06-13-2011 Rechargeable Portable Voice Amplifier Overall:  
  • Other Thoughts: This amplifier has been used to give at least four museum tours of form 20 to 40 people. The sound is clear, and it is easy to use. I'm still on the first battery charge, and I have a little concern as to how much warining it will give when the battery is low. I'm very happy with both price and quality.

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Tanya Eberle

Bought this item on

06-13-2011
00:00:00 06-13-2011 great item, love this speaker Overall:  
  • Other Thoughts: easy to use, headset a little difficult to use. could be GREAT with a small microphone that clips on clothes....

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Edward Del Rincon

Bought this item on

06-12-2011
00:00:00 06-12-2011 Waist Hanged Voice Amplifier Overall:  
  • Other Thoughts: SImple to use, works well even in a large conference room and in our church auditorium, unexpected clairity and voice quality.

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john sullivan

Bought this item on

06-02-2011
00:00:00 06-02-2011 Excellent product Overall:  
  • Other Thoughts: As a classroom teacher, I highly recommend this voice amplifier as it helps me to boost my voice in class, so my vocal cord is better protected after teaching a lesson.

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Chandra Benner

Bought this item on

05-31-2011
00:00:00 05-31-2011 Voice Amplifier Overall:  
  • Other Thoughts: This equipment is very good for teachers. It makes your voice louder without stress your vocal cords. <br/>The sound is clear and the it has a good size. <br/>It's very comfortable to use it.

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edwin burt

Bought this item on

05-27-2011
00:00:00 05-27-2011 finally able to communicate Overall:  
  • Other Thoughts: Due to surgery 12 months ago, i could rarely be heard,, Now i can talk..and be heard,,,,,,,love it!

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CRAIG RUSTAD

Bought this item on

05-24-2011
00:00:00 05-24-2011 Waist Hanged Voice Amplifier Overall:  
  • Other Thoughts: The little device performs well, but our band director experienced feed back when the wire between the headset and the amplifier brushed against the music stand. She had better luck putting the wire behind her shoulder and bring it through her belt loop to the amplifier. She had to have the amplifier on the front facing the band. She has opted to purchase a wireless system with a lapel mike because she didn't like having the headset interfere with her hair. The Aker system works well enough however that she wants the band to keep it for times when there is no electricity available and for a general backup. Having her voice amplified definitely helped the band rehearsals go more smoothly.

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Erin Tuttle

Bought this item on

05-16-2011
00:00:00 05-16-2011 Rechargeable Portable Voice Amplifier Overall:  
  • Other Thoughts: I give ghost walk tours and this mic is wonderful. Small, lightweight, attaches to a belt or pocket and also has its own belt. It was loud enough for a group of 200 to hear outdoors. I highly recommend it.

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Didier Filippin

Bought this item on

05-03-2011
00:00:00 05-03-2011 Excellent product Overall:  
  • Other Thoughts: I volunteer at an assisted living facility once a week and some of the residents are nearly deaf. I ordered this voice amplifier and it worked perfectly, but was not quite loud enough for the deaf residents. I contacted the seller, who was extremely helpful. I returned it and purchased the 16 watt, which is exactly what I need for my situation. The 16 watt is probably louder than you would need in normal situations like a classroom, but it has a volume adjustment. My grandchildren also like to use it to song solos for the family.

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