Speakers: Ceramic, Alnico, and Electrodynamic....a Basic Discussion

Comments · 709

• QU

  @quarryfield · 9 years ago

  I just learned more about speakers in 25 minutes that I have in all my 62 years of doing other stuff. Thanks, Uncle Doug and Rusty :-)

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• GR

  @GRobLewis · 6 years ago

  A few things I learned working at Cerwin-Vega (many years ago): <br><br>1. We always called them &quot;spiders&quot; even though they don&apos;t look like arachnids. Interesting to learn the source of the term! Their main purpose isn&apos;t to keep dust out, but to keep the voice coil centered in the magnetic gap. <br><br>2. Besides burning out the voice coil, another cause of failure due to excessive power is overexcursion, which can cause the voice coil form to &quot;bottom&quot; in the magnetic structure, often ruining it (you&apos;ll typically hear a loud &quot;crack&quot; if this happens). Open-back cabinets do nothing to prevent this, though you&apos;re right that the stiff suspensions of guitar speakers make it less likely. Still, playing a bass with a powerful amplifier through guitar speakers in an open-back cabinet is inviting trouble! <br><br>3. Overheating the voice coil may not melt the wire, but it can soften or burn the glue holding the coil together, allowing the coil to &quot;throw a winding&quot; into the gap. Time for a new voice coil. <br><br>4. Magnet size by itself is overrated. My boss used to ridicule the ceramic magnets found in cheap speakers as &quot;dried mud&quot;. They could advertise heavy magnets when what actually matters is magnetic field strength.

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• DA

  @damonztube1 · 7 years ago

  Your Presentation of &quot;Speakers: Ceramic, Alnico, Electrodynamic....a Basic Discussion&quot; is excellent<br>I&apos;ve been on a quest to discover the reason behind the magic of Alnico magnets<br>I climbed to top of the mountain to receive wisdom and Uncle Doug bestowed <br>Thank you

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• JL

  @jlucasound · 12 years ago

  Already have one! (Beer). That was me! Thanks Uncle Doug.

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• TI

  @timsterz1 · 2 years ago

  I don&apos;t know how I missed this one Uncle Doug, but now 9 years later I&apos;ve enjoyed this vid. as much as if I&apos;d seen it then.

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• 2A

  @2angelitolv · 10 years ago

  Thank you Doug for taking the time to make these videos. They are very enlightening for us, the amateurs.

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• RE

  @renemichelnunes · 12 years ago

  I can not resist the charm of the old bad boys and his tones... this is precious info &nbsp;thanks Doug and Rusty with your wishbone :)

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• BU

  @bullthrush · 12 years ago

  Understanding is a wonderful thing, and your videos bring it to a new level. &nbsp;Rusty must have underestimated how much more there is to learn about speakers.

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• L.

  @L.Scott_Music · 9 years ago

  Got a full life with so much to do... and it just got fuller after discovering this channel. &nbsp;Uh oh.

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• BI

  @BicycleJoeTomasello · 5 years ago (edited)

  A classic Uncle Doug, miss Rusty. I love your new format. Time marches on! A humbucker coil, you learn something every day.

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• ED

  @EDKguy · 10 years ago

  The talk of turkey magnet sandwich and can of tuna is making me hungry! Great video! I appreciate you sharing your knowledge and I like your sense of humor too.

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• TH

  @theHAL9000 · 6 years ago

  Not even sure how I came to watching this video but so interesting and well presented. Have much better general understanding of speakers and that makes for 20 mins. very well spent. Thanks!

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