Homemade
Speaker Competition
Background
Design teams of three st=
udents
per team will build and test a simple speaker. The following information will pro=
vide
further details. The only pro=
vided
materials are AWG 30 magnet
wire, a
0.5” x 0.25” Neodymium magnet, and plastic
cups. A mono audio jack (1/8”) is available in the classroom f=
or
testing.
![](3D"HomemadeSpeakerCompetition_files/image002.jpg")
The Task
Part 1=
Phase 2
Resources
=
1. How Speakers Work: http://electronics.howst=
uffworks.com/speaker1.htm
=
2. How to make a Speaker: http://www.josepino.com/?ho=
wto-speaker
=
3. Plate Homemade Speaker
Instructions: http://josepino.com/othe=
r_projects/?homemade-hifi-speaker.jpc
=
4. More homemade speaker
instructions: http://www.instructables.com/id/Homemade-speaker/
=
5. Soda Bottle Speaker: http://physics.=
mercer.edu/marone/soda/sbsintro.htm
=
6. Similar Speaker Project =
and
Directions from EE Department at Southern Methodist University: http://lyle.smu.edu/ee/1382/Speaker%20Lab.doc=
Design and Report
Speakers
will be evaluated based on their loudness, audio quality, and style. The accompanying web links are des=
igned
to help educate you on speaker design fundamentals and perhaps inspire you =
to
come up with a particularly innovative design. You are welcome to use the instrum=
ents
and tools in the classroom for construction and pre-testing of your speaker=
. The use of manufactured speakers or
speaker components is not allowed. <=
/span>
Groups
may consist of no more than three students. You must submit individually a rep=
ort of
five pages in length which should include sketches of your design as well a=
s a
discussion about the theory behind your design and any difficulties you may
have encountered. Your entire lab report must be your ow=
n.
If
members of your design team are not contributing to the design activity, you
may choose to outline the contributions of every team member in an appendix=
to
make the graders aware of the lack of contribution.
![](3D"HomemadeSpeakerCompetition_files/image004.jpg")
The
lab report format should be as follows:
I.&n=
bsp;
Title Page
II.&=
nbsp;
Introduction
III.=
Background & Theory of Operatio=
n
IV.&=
nbsp;
Materials List and Cost Estimate
V.&n=
bsp;
Procedure
VI.&=
nbsp;
Data & Drawings
VII.=
Analysis & Discussion
VIII.
Conclusions
|
Assessment
|
|
|
|
|
Hom=
emade
Speaker Project<=
/p>
|
|
Performance
|
|
Max
|
Score
|
|
|
Speaker
Built
|
9
|
|
|
|
Sound
is Heard
|
9
|
|
|
|
Sound
is Distinguishable
|
9
|
|
|
|
Words
Are Distinguishable<=
/p>
|
9
|
|
|
|
Loudness
|
9
|
|
|
Write-Up
|
|
|
|
|
|
Title
Page Included
|
5
|
|
|
|
Introduction
in Paragraph Form
|
5
|
|
|
|
Background
and Theory Described (w/diagrams)<=
/span>
|
5
|
|
|
|
Materials
List and Cost Estimate Included
|
5
|
|
|
|
Procedure
Complete
|
5
|
|
|
|
Data
Presented, Diagrams / Pictures Shown
|
5
|
|
|
|
Analysis
Describes Designs Considered
|
5
|
|
|
|
Analysis
Explains Why Final Design Chosen
|
5
|
|
|
|
Conclusions
Describe Improvement Opportunities=
|
5
|
|
|
Aesthetics
|
|
|
|
|
|
Neatness
|
5
|
|
|
|
Style
|
5
|
|
|
|
|
|
|
|
Total
|
|
100
|
|
&=
nbsp;
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