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  1. #1
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    Default Fountek NeoCd3.5H Horn Tweeter

    all measurements were done with 20mfd capacitor in series
    on axis response was taken on a 5'x10'
    tweeter was surface mounted.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  2. #2
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    CSD and nonlinear were taken 0.5 meter.
    Off axis response was taken at 1 meter on the 14"x14" baffle mounted on the rotating stand.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  3. #3
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    I have also measured Fountek NeoCd3.0M. If anyone is interested, I'll post it as well.

  4. #4
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Quote Originally Posted by r-carpenter View Post
    I have also measured Fountek NeoCd3.0M. If anyone is interested, I'll post it as well.
    Sure, it would be an interesting comparison.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

    http://www.diy-ny.com/

  5. #5
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    here it is, same conditions
    tweeter flush mounted.....was easy enough
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  6. #6
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    ...
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Thanks for posting the results, looks like the 3.0 is better all around. What's with that nasty energy storage at 2khz on the 3.5?

  8. #8
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    I don't know man. I was a bit surprised myself. They both have it but the horn loaded ribbon has a bigger problem, it appears.
    I am thinking LCR with second order around 2800hz should do the trick.

    3.0 got my vote as well. Few more $ but I think it's worth it.

  9. #9
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Thanks for letting us know thie information you found out.

  10. #10
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Quote Originally Posted by r-carpenter View Post
    I don't know man. I was a bit surprised myself. They both have it but the horn loaded ribbon has a bigger problem, it appears.
    I am thinking LCR with second order around 2800hz should do the trick.

    3.0 got my vote as well. Few more $ but I think it's worth it.
    Yea I suppose the 3.0 is twice the price so it should be better. 2800hz would probably be fine, above 3500hz it looks great.

  11. #11
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Though 3.0 seem to have better response . The 3.5 still looks usable. Carpenter
    since they are fresh on your ears. Would you say the 3.5 is still a good bargain for the price?

  12. #12
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    I think 3.5 is a good tweeter. It's more limited because of the energy storage issue and nonlinear products then 3.0 The question really is, what can you use it with?
    Dome mid range or a 3" woofer with linear response extending in to 3500hz area?
    I haven't build the systems with either one yet but will soon.
    Good for the money? If used within it's limits, I guess so.

  13. #13
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Which are you thinking of pairing them with 1st and 3 inch woofer in a 2 way or a mid range for a 3 way?
    Actually you can also get a 4 inch woofer to reach 3500. Look at the B4n, TB titanium and bamboo drivers.

  14. #14
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Is the SPL really that low on the 3.5? Or did you not have the voltage at 2.83VAC?
    Later,
    Wolf
    "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
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  15. #15
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Voltage was about 1-1.5.

  16. #16
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    The performance above 3000Hz looks very nice. Distortion is quite low and response pretty smooth.

    Thanks for posting that data.

  17. #17
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    I am impressed with horizontal off axis of 3.0. But yeah, I think CD 3 is a new find for me and will provide for a couple of good ribbon designs. The 3.5H is good to but not as good as 3.0.

  18. #18
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Quote Originally Posted by Pete00t View Post
    Which are you thinking of pairing them with 1st and 3 inch woofer in a 2 way or a mid range for a 3 way?
    Actually you can also get a 4 inch woofer to reach 3500. Look at the B4n, TB titanium and bamboo drivers.
    I have a couple Jordan 92s laying around and also going to build Dayton RS150 2.5 for a friend. So, that 2.5 may become 3.5 with 4 rs150 per side, and couple of dome mids with 3.5H in the center. BBMTMBB.

  19. #19

    Default Re: Fountek NeoCd3.5H Horn Tweeter

    [QUOTE=r-carpenter;1647369]I The question really is, what can you use it with?
    Dome mid range or a 3" woofer with linear response extending in to 3500hz area?
    I/QUOTE]

    Given the high sensitivity, i'd pair it with a Fostex 4" fullrange as a mid crossed to the woofer section in the 5-600hz range.

  20. #20
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    Default Re: Fountek NeoCd3.5H Horn Tweeter

    Quote Originally Posted by r-carpenter View Post
    I have a couple Jordan 92s laying around and also going to build Dayton RS150 2.5 for a friend. So, that 2.5 may become 3.5 with 4 rs150 per side, and couple of dome mids with 3.5H in the center. BBMTMBB.
    Sounds like good plans ... they'd be a nice match for the Jordans or dome mids. Best use of them looks to be crossed at 3.5khz or slightly higher.

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