Help identify this tweeter?

rad_ken1
rad_ken1 Posts: 9
edited November 2010 in Speakers
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?
Post edited by rad_ken1 on
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  • DaveHo
    DaveHo Posts: 3,582
    edited November 2010
    Pics of the back? With that heatsink, it kind of reminds me of a Paradigm tweet.

    -Dave
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  • rad_ken1
    rad_ken1 Posts: 9
    edited November 2010
    Thanks much Dave, here are a few more views.
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  • steveinaz
    steveinaz Posts: 19,545
    edited November 2010
    Possibly an early "Energy" speaker model. They usually have the defraction plate like those.
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Source: Rotel CD14MkII CD Player - Speakers: Elac Debut 2.0 B5.2
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  • halo71
    halo71 Posts: 4,637
    edited November 2010
    yeah...dumb question time again. Is that really a heat sink on the back?
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
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  • dorokusai
    dorokusai Posts: 25,576
    edited November 2010
    halo71 wrote: »
    yeah...dumb question time again. Is that really a heat sink on the back?

    Absolutely.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • FTGV
    FTGV Posts: 3,650
    edited November 2010
    I'm thinking they are Boston Acoustics VR series?
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  • dorokusai
    dorokusai Posts: 25,576
    edited November 2010
    I'm going with BA as well.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • halo71
    halo71 Posts: 4,637
    edited November 2010
    dorokusai wrote: »
    Absolutely.

    Told ya it was a dumb question! :tongue:
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
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  • nooshinjohn
    nooshinjohn Posts: 25,963
    edited November 2010
    are there any markings under the heat-sink?
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2800 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon MiND2 Shunyata Triton

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson

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  • dorokusai
    dorokusai Posts: 25,576
    edited November 2010
    halo71 wrote: »
    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.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • FTGV
    FTGV Posts: 3,650
    edited November 2010
    dorokusai wrote: »
    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/product_info.php?products_id=8352
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  • dorokusai
    dorokusai Posts: 25,576
    edited November 2010
    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.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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