home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky rec.audio:15214 alt.hackers:1701
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!ames!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!spool.mu.edu!yale.edu!qt.cs.utexas.edu!news.Brown.EDU!noc.near.net!bigboote.WPI.EDU!banzai.WPI.EDU!lancer
- From: lancer@banzai.WPI.EDU (Stephe Lewis Foskett)
- Newsgroups: rec.audio,alt.hackers
- Subject: almost free speakers from household stuff...
- Followup-To: rec.audio
- Date: 17 Nov 1992 01:17:07 GMT
- Organization: Worcester Polytechnic Institute
- Lines: 100
- Approved: Stephe@NonDes.home
- Distribution: world
- Message-ID: <1e9h6jINNq4e@bigboote.WPI.EDU>
- NNTP-Posting-Host: banzai.wpi.edu
-
- People were complaining that there were too many "My stereo is more
- expensive than yours" articles and too few "what can a poor college
- student do to improve his stereo?" articles on rec.audio. Here's my
- answer. I threw these together in a few hours yesterday and they
- sound pretty good, considering that they're made from 10 year old, 1.5
- watt speakers and other stuff I had lying around my room. Oh, and if
- you don't have the speakers, I'd bet the Radio Shack 40-248 3"
- speakers would work pretty well, and at $2.99 each you won't break the
- bank either...
-
- I use them as sound reinforcement speakers in my room, above my head
- when I sit in bed, and they work great.
-
- If you get really wild, you could add a tweeter or something with a
- crossover. And if anyone has any suggestions on improving them,
- please email me! But nothing expensive, please!
-
- My next project: A subwoofer to go with these for less than $20...
- I'll post if/when I do it...
-
- Enjoy!
- .s.
-
- -- cut here --
- Stephe's Really Cheap Speakers
-
- ingredients:
- 2 3.25" speakers (I got mine from an old portable radio)
- 2 1lb coffee cans
- a piece of old window screen (I used the speaker grilles from the radio)
- 6 old plastic grocery store-type bags
- 2 old speaker terminals (I got mine from an old receiver)
- epoxy glue
- solder
- electrical tape
- 2 feet of wire
- tools:
- wire cutter (or nibbling tool)
- small sharp knife
- soldering iron
-
- First, test the speakers. Mine are rated to 1.5 watts, but they sound
- better when I put 10 or 20 watts through them :).
- Use the wire cutter or nibbling tool to cut a hole large enough to
- accomodate the speaker terminal in the can near the base. I cut mine
- in the UPC symbol to remove that unsightly blemish.
- Solder a 6 inch segment of wire to each speaker terminal. Solder the
- other end of the wires to the appropriate pins on the back of the
- speaker terminals.
- Tape the terminals to the inside of the can so they protrude from the
- holes and epoxy them in place. Make sure the epoxy covers the holes
- entirely. You may have to let it dry a bit before you can use it to
- cover any large gaps. The point is to make it relatively airtight to
- provide a reasonable accoustic suspension.
- While the epoxy dries, use the knife to cut a round hole just a bit
- smaller than the diameter of the speaker in the lid of the can. Cut
- the screen as shown below and cut slits in the lid for the screen tabs
- to fit into. Fit the lid over the speaker and fold the screen tabs
- around the edges to hold it in place as shown below. It doesn't have
- to hold very well, because the plastic bags will hold it in place when
- the lid is closed.
- When the epoxy is dry, fill the can with crumpled up plastic bags,
- packing them in a bit but not really forcing the issue. About 3 per
- can should do it.
- Fit the lid with the speaker on the top of the can and you've got a
- nice, cheap little sattelite speaker.
-
- Neat-O, way overdone, and probably redundant ASCII pictures:
-
- Lid configuration (pretend these two are round, ok?) Screen
- ____ --
- lid ----------->/ __ \ __ | | __
- / ------ \ / \
- hole -------/->/ \ \ / \
- | | | | _ | | _
- slits -----|->|| || | |_ _|
- | | | | | |
- \ \ ______ / / \ /
- \ -- / \ __ __ /
- \ ____ / | |
- --
-
- What-the-speaker-looks-like-when-attached-to-the-lid-when-seen-from-the-side:
-
- screen -------------> /------------------------------\
- lid ------------> ----|-------------| |-------------|----
- tabs ------------|--->| ____________|__|____________ | |
- |____\ \___________| |___________/ /____|
- \--\ |--| /--/
- \ /
- \ /
- __\_________/__
- speaker ---------------------> | |
- ---------------
-
-
- --
- - so spake lancer@wpi.wpi.edu - - so speak the Posies: -
- - Life's never been a great mystery to me, -
- - It begins and winds slowly to the end -
-