[dorkbotnyc-blabber] mono powered speakers

[Zach 'Hoeken' Smith]

does anyone have any suggestions (other than keeping your phone away from
speakers) on how to prevent that?  thats the biggest problem with listening
to music via iphone right there.

~Hoeken

On Jan 25, 2008 5:50 PM, Jascha Narveson <jnarveson at wesleyan.edu> wrote:

>
> Ah, that was it - i just called myself and heard the burst of noise.
>
> thanks,
>
> j
>
>
> On Jan 25, 2008, at 2:40 PM, Kevin Balktick wrote:
>
> > Is it near something that would create radio/magnetic interference,
> > such as your cell phone?
> >
> >
> >
> > Kevin.
> >
> > On Jan 25, 2008, at 2:27 PM, Jascha Narveson wrote:
> >
> >>
> >> Hi, Brent -
> >>
> >> Hm, this is interesting.  I've purchased a $20 pair of computer
> >> speakers and have cut one off.  Right now I'm playing a CD walkman
> >> through the other one, and I do notice occasionally the speaker
> >> will cough up little bursts of noise - not super frequent, but
> >> once or twice every few minutes or so.  Is this the kind of
> >> behavior which I can expect from having chopped the other speaker
> >> off?
> >>
> >> thanks,
> >>
> >> jascha
> >>
> >> On Jan 23, 2008, at 9:29 AM, Brent Buescher wrote:
> >>
> >>> You won't get cheaper than half a normal computer speaker set; in
> >>> fact
> >>> you should be able to find computer speaker sets with one dead
> >>> speaker
> >>> for free.
> >>>
> >>> The only problem with that approach is that computer speaker
> >>> amplifiers (and similar things for mp3 players and such) have fairly
> >>> low-impedance inputs.  This means they put a load on your circuit
> >>> when
> >>> you hook them up to it, which can make it behave differently than
> >>> when
> >>> they're not hooked up.  May or may not matter for your application.
> >>>
> >>> The little Radio Shack speaker has a high-impedance input, or at
> >>> least
> >>> older models did.  I have one in my toolbox for tracing out audio
> >>> signals and so on.  It is a little expensive for what you get and
> >>> adding a wall wart doesn't make it any cheaper.
> >>>
> >>> If you want something bigger with high-impedance inputs, watch
> >>> discount stores like Wal-Mart and Target for when they put their
> >>> cheap
> >>> little guitar amps on sale.
> >>>
> >>> Another approach: if you trace out radios you can usually find the
> >>> input to the audio amplifier and add an auxiliary input.  Wal-
> >>> Mart has
> >>> $5 clock radios that would be easy to convert into little mono
> >>> amplifiers.
> >>>
> >>> Brent
> >>> ....................................................................
> >>> ....
> >>> .........dorkbot: people doing strange things with
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> >> .....................................................................
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> >> electricity..........
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> > ......................................................................
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> > electricity..........
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>
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