Supertweeters?

Discussion in 'Speakers' started by legal eagle, Aug 30, 2017.

  1. teebee

    teebee Well-Known Member

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    If a supertweeter is of very small diameter, such as a 3/4, 5/8, or even 1/2", it's most notable benefit would not necessarily be supersonics, but better off axis dispersion, ala Sony's recent offerings.
     
    Last edited: Sep 13, 2017
  2. slow_jazz

    slow_jazz Lunatic Member

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    14,089
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    SE Michigan, Downriver....
    Big fan here.
     
  3. Poultrygeist

    Poultrygeist Addicted Member

  4. absolve2525

    absolve2525 AK Subscriber Subscriber

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    Thanks for the link. I don't quite understand how the sound radiates from the rear, as mentioned above? Maybe I misread lol. I have a few pairs of the Realistics, and they're definitely worth having.
     
  5. Poultrygeist

    Poultrygeist Addicted Member

    It radiates from the rear once it's removed from it's plastic pod and mounted as shown in these OB's.

    P1010029.jpg
     
  6. absolve2525

    absolve2525 AK Subscriber Subscriber

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    Very cool!!
     
  7. toddalin

    toddalin Super Member

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    Hard to beat the old stand-bys:

    [​IMG] [​IMG]
     
    Alobar likes this.
  8. Poultrygeist

    Poultrygeist Addicted Member

    what are they?
     
  9. kahler

    kahler AK Subscriber Subscriber

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    Yeah, are there cheap super tweeters available anyway? Very interested in the idea, would love to try some
     
  10. toddalin

    toddalin Super Member

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    JBL 075/2402 bullet and 2405/077 slot.
     
  11. Aptone

    Aptone AK Subscriber Subscriber

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    So I have been thinking of modding a pair of Magnepan MG-IIb with Infinity Emit tweeters to see if that adds some sparkle. I know the Emit is not technically a supertweeter, but some go up to 32 or 45 kHz. I got a pair of model 902-4941 Emits with the samarium cobalt magnets (orange lettering on a round face plate). Supposedly they came out of a RS 8, but I am having a hard time finding a schematic with the 902-4941 as the specified tweeter to make a mini crossover. Any help?

    I did find a RS 8 schematic with a 902-5023 here http://www.infinity-classics.de/technik/manuals/RS_8_technical_sheet.pdf and will assume it is close enough unless if better info appears. Thanks.
     
  12. stevo137

    stevo137 AK Subscriber Subscriber

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    Pioneer HPM 150/1500 super tweeter.

    It is a polymer horn loaded omnidirectional which gives a 270 degree dispersion.

    I had both 1500's and 150's in the past and the best thing about the speakers is that the tweeters give a great airy sound that fills the room with fantastic imaging when set up properly.

    Some say that you can't hear them but thats totally NOT true.

    You can hear them if they are working and I still have a spare that I'm keeping.

    Also had two sets of HPM 900's and those super tweets were pretty nice but not even close to the level of the 150's.

    I think that you need the 150/1500 crossovers to make them work but not sure about that.

    IMG_4935.PNG
     
    Last edited: Sep 14, 2017
  13. tubed

    tubed Lunatic Member

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    Aztlan
  14. tubed

    tubed Lunatic Member

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    Aztlan
    HPM-200 tweeter and supertweeter.
    [​IMG]
     
  15. Poultrygeist

    Poultrygeist Addicted Member

    At over $700 wouldn't be most folk's standby
     
  16. Poultrygeist

    Poultrygeist Addicted Member

    Just ordered these B&C DE35 neodymiums from PE. At $150 they're the most expensive tweeters I've purchased. If they don't beat the Eminence ASD 1001 they're going back. But based on their reviews I have high hopes they will.

    [​IMG]
     
  17. PianotunerNJ

    PianotunerNJ Active Member

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    Yeah, only musicians that use the piano as an ensemble instrument notice. Like the church that wants to play piano and organ together for example. A few people register perfect pitch and require A440. Because of my background as a piano rebuilder, my perspective is that tuning pianos is a tension game. They're designed to function best when the strings (about 230 of them) are in a balanced state of tension at standard pitch. Not only does that result in the intended sound of the piano in terms of tone and resonance, it also helps the piano achieve a higher level of stability. I try to keep all of my customers pianos at A440. Sometimes it's not possible for physical or financial reasons.
     
    stevo137 likes this.
  18. vinyl fiend

    vinyl fiend Active Member

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    Newburgh, NY
    will adding an extra super tweeter and requisite crossover affect the speaker load? I have 3 ways now with a regular Phillips mylar tweet. I would to add a pair of electro statics on top.
     
  19. PianotunerNJ

    PianotunerNJ Active Member

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    Location:
    Central NJ
    All you need is logic on this one. Real life has no boundaries on frequency. The wider the frequency range of your system, the better chance it has of recreating a true to life sound. If your listening experience says otherwise then you're possibly less discerning or maybe your hearing isn't as sharp. Since I've made efforts to broaden the range and dynamics of my system with better speakers and higher resolution source material, it has improved my listening experience and made it more fun, for me. I have friends and a wife who don't notice a difference, and I have friends that are amazed at the difference. The results are real and measureable, but not totally tangible or justifiable to everyone.

    An audiophile is essentially a stereo gearhead. Would you build a race car and hit the track with regular unleaded in the tank? Stock tires? No way. You go slicks and octane boost and whatever mod they will allow to squeeze all the power and speed you can out of the car. whatever budget will allow, right?
     
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  20. mhardy6647

    mhardy6647 AK Subscriber Subscriber

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    No, they shouldn't (radiate from the rear if the enclosures are removed). They're 'sealed back' drivers, to the best of my recollection.

    Any decent capacitor would be an improvement over the stock NP electrolytic.

    FWIW (and I may well be wrong!) I think I remember that at least some of the 40-1310 'supertweeters' had second-order XOs in them (cap plus inductor). If yours are so equipped, I'd (ahem) humbly suggest bypassing/removing both elements of the stock XO and just swapping in a good capacitor at a very high nominal XO frequency (10kHz or even higher "knee"). For testing purposes, I'd further encourage you to consider installing a variable L-pad to 'dial in' the supertweeters (by ear or with the aid of a FFT spectrum analysis gizmo). In principle :) the series and parallel resistances for the "best case" attenuation may be measured, and the variable L-pad replaced by a fixed L-pad consisting of two decent quality resistors. Alternatively, one may choose to experiment with fixed L-pad attenuation from the get-go; calculators are available on line (e.g., http://www.erseaudio.com/CrossoverCalculators/L-Pad-Attenuation)

    My apologies if this is utterly irrelevant to the questions asked! :p

    In my own defense, I do have a pair of 40-1310s, NIB, down in the basement, someplace.
     
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