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Headset Microphone (Boom Microphone) Tips
 | The proper speaking distance is 3 - 5 cm from your mouth
to the microphone, for the best sound reproduction. |
| When the microphone is too close to your mouth or you speak too
loud, the speech clarity will be impaired.
| Remember to turn your Microphone "Off" when:
 | you speak to a student privately. |
| you leave the Classroom
 | to speak to someone. |
| to go to the washroom. |
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| Headset Microphones deliver Better Audio Quality than
Lapel Microphones because they are located closer to your mouth. |
| Headset Microphones Pick Up Less Background Noise than
Lapel Microphones because they are Unidirectional and
require Less Amplification (due to being closer to your mouth).
| Headset Microphones are Less Likely to Feedback
because they are Unidirectional and require Less Amplification.
| Headset Microphones Allow for Higher Volume Settings
before Feedback.
| Headset Microphones
Deliver a more Trouble Free Mode of Operation. |
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Body Pack Tips
| Remember - the Microphone Connector Screws on to the Body
Pack. |
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Battery Tips
| Battery Type - One Nine Volt Battery |
| Battery Life and Capacity
| Alkaline Battery
| 10 Hours Continuous Operation |
| 500 mAh |
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| Rechargeable Nickel-Hydride Ni-MH Battery
| 3 Hours Continuous Operation |
| 150 mAh |
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| Ni-MH Batteries have about 1/3 the Capacity of Alkaline Batteries
but they can be recharged up to 1000 times. |
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Battery Charger Tips
| Recharges One or Two - 9 Volt Nickel-Hydride Ni-MH Batteries |
| Rechargeable Ni-MH Batteries have No Memory
they can be recharged at any time. |
| Battery Charge Time = 14 hours for a fully discharged battery |
| Auto Shutoff - after 15 Hours - for Safety Purposes
| To Restart the Charger
| Unplug the Charger and Plug it in Again. |
| or turn the Power to the Charger "Off" and
then "On" Again. |
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| Varta Ni-MH Batteries can be recharged up to 1000 times. |
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UHF "True Diversity" Receiver Tips
| Set the UHF Output Level to Maximum and always use the Amplifier
Volume Control to Adjust the Audio Level in the Classroom.
(It is better to amplify a higher level signal than to amplify a lower
level signal to minimize the amount that you amplify any amplification
noise.) |
| Note: The "True Diversity" UHF Wireless Receiver
constantly compares the UHF Signal Strength from the two antennas and
then chooses the stronger signal to receive. In this way there are no
"drop-outs" or interruptions in the reception due to
variations in the signal strength as the teacher moves around the
classroom. |
| Raise the two antennas at a 45 degree angle outward from a vertical
line. |
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Amplifier Tips
| The A-901A Amplifier and the A-903MK2 Amplifiers are equipped
with a F-121C Equalization Module to enhance the audio quality of the
F-121C Speaker.
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H-3 "Wall Mount" Speaker Tips
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The Sound Source & The Amplified Sound emanate
from
the Same Direction
Using the H-3 Speaker, the Sound Source (the Teacher's Voice) and the
Amplified Voice emanate from the same direction (the front of the
classroom) to deliver the best Audio Clarity & Intelligibility to
the Students. |
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Point Source Sound
The H-3 with its wide dispersion pattern makes it possible to use
only one H-3 Speaker in the Classroom (to have a Single Point Sound
Source) which is the best for listening to Speech, from a Clarity and
Intelligibility Perspective. |
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Flush - Wall Mounting Speaker - Minimum Reflection
Design
The H-3 is a Flush - Wall Mounting Speaker which significantly
reduces sound wave reflections and the resulting sound coloration that
occurs with conventional bracket-mounted "box" type speakers
which do not mount flush with the surface of the wall. |
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Wide
Dispersion Speakers - Minimize the Potential for Feedback
The H-3 Wide
Dispersion Speaker disperses the high frequencies throughout the
classroom and delivers a more uniform audio level throughout the
classroom thereby minimizing the potential for feedback as the teacher
walks in front of the H-3 Wall "Mount Speaker". Standard
Speakers have a high frequency hot spot, directly in front of them,
and are more prone to cause feedback. |
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F-121C "Ceiling Mount" Tips
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Point Source Sound
The F-121C Speaker with its wide dispersion pattern makes it
possible to use only one F-121C Speaker in the Classroom (to have a
Single Point Sound Source) which is the best for listening to Speech,
from a Clarity and Intelligibility Perspective. |
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The F-121C Wide Dispersion Speaker minimizes Hot
Spots
The F-121C Speaker disperses the high frequencies uniformly
throughout the classroom and makes it possible for the Teacher to walk
directly under the F-121C Speaker with a minimum potential for feed
back. |
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Wide Coverage Area
Please see the attached Application Note: F-121C
Application Note.
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Standard Ceiling Speakers disperse sound like
Flash Lights. |
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Wide Dispersion Speakers disperse sound like Light
Bulbs. |
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Flush - Ceiling Mount Speaker - Minimum Reflection
Design
The F-121C is a Flush - Ceiling Mounting Speaker which
significantly reduces sound wave reflections and the resulting sound
coloration that occurs with Speakers that Hang from the Ceiling. |
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Request for More Tips & Comments
|
| What additional Tips would you like to see added to this
website? |
| Please send your them to: webmaster@alphanet.ca
and
we will add them to this website. Thank you |
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