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  1. #1

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    Default Help identify this tweeter?

    I've got a few sets of these tweeters but have no information on them. There are no logos or markings I can see on the front or rear. I believe they should be oem replacements for some production speakers maybe from late 1990's. Can anyone help with more info?
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  2. #2

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    Pics of the back? With that heatsink, it kind of reminds me of a Paradigm tweet.

    -Dave

  3. #3

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    Thanks much Dave, here are a few more views.
    Attached Thumbnails Attached Thumbnails Click image for larger version

Name:	Heatsink_tweeter 001.jpg‎
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ID:	53440   Click image for larger version

Name:	Heatsink_tweeter 002.jpg‎
Views:	44
Size:	347.1 KB
ID:	53441   Click image for larger version

Name:	Heatsink_tweeter 003.jpg‎
Views:	33
Size:	236.0 KB
ID:	53442  

  4. #4

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    Possibly an early "Energy" speaker model. They usually have the defraction plate like those.

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    yeah...dumb question time again. Is that really a heat sink on the back?
    --Gary--

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    Quote Originally Posted by halo71 View Post
    yeah...dumb question time again. Is that really a heat sink on the back?
    Absolutely.

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    I'm thinking they are Boston Acoustics VR series?

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    I'm going with BA as well.

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    Quote Originally Posted by dorokusai View Post
    Absolutely.
    Told ya it was a dumb question! :tongue:
    --Gary--

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    are there any markings under the heat-sink?
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  11. #11

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    Quote Originally Posted by halo71 View Post
    Told ya it was a dumb question! :tongue:
    Not a dumb question. I've thought the same thing in regards to computer motherboard components(non-processor) as in, how on earth could that thing get so hot? It's so small! It's the overall architecture and usage that creates the heat. I never knew it that way.

    In a tweeter diaphragm, it moves so fast, so many times in a nanosecond that it generates heat. Even if it's a small amount, to a delicate structure such as a tweeter, this is an important factor. This will vary widely in construction in modern and vintage tweeters so not every design would require such a heatsink. That's what is so interesting about audio, is the overall design that these engineers figure out. Amazing.
    Last edited by dorokusai; 11-22-2010 at 07:12 PM.

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    Quote Originally Posted by dorokusai View Post
    In a tweeter diaphragm, it moves so fast, so many times in a nanosecond that it generates heat.
    It's the current flowing through the voicecoil that produces the heat not the movement.Anywho with some of the modern tweets utilizing smaller(but more powerful)neodymium magnets in their motor structures means there is less surface area for heat disipation vs tweets using the large ferrite magnet structures.So the addition of the heat sink helps in that regard.Here is another example,a popular budget unit from Vifa. http://www.madisound.com/store/produ...oducts_id=8352

  13. #13

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    That's correct as well....we're talking about the same thing essentially. If you didn't have current, you wouldn't have movement of the voice coil or structure at all. Anyways, good link and post.
    Last edited by dorokusai; 11-22-2010 at 10:27 PM.

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