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Thread: the 075 2402 bullet tweeter ? use ina 91db/w system

  1. #1
    Timothy Bailey
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    the 075 2402 bullet tweeter ? use ina 91db/w system

    I have been looking for a tweeter upgrade for my 2-way Foster driver spheres. so far my alternatives include these, the Fountek NeoCD2, and the new Scandianvian ring tweeters.

    the tweets are Foster's 35mm soft domes with a 3rd order HP, and an Fs trap at 1.1 K. set @ 3.5k. Much listening by the listening panel way back when.

    No LP on the mid woofer which rolls off nicely itself (FW202), just Z-rise Rand C across it plus a nichrome wire as a damping R.

    I would like to go even simpler with a 1st order tweeter, just one good cap, plus an in line L-pad.

    I have posted more details - e.g. about flush mounting them - under Widget's 'ring radiator review' thread.

    my tweeter amp is 6 watts only of Leak pp EL84 triode-mode power, currently input RC filtered @175 hz, and am happy to take that up to ~ 875 hz max.

    So, ...... can I get away with a 1st order @ 3.5k cap on these tweeters?

    IF I can find a pair, that is!!!!

    No, I don't listen that loud, except on occasion. And I hate the sound of clipping which occures on 108db peaks!

    So they ain't gonnA see a lot of WATTS.

    TIA

  2. #2
    Administrator Robh3606's Avatar
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    Hello Tim

    JBL used them in a 2 way with a D-130 called the 030 system. The crossover was the N2400. The actual point is around where you are looking and it's a single cap and resistor network set-up. This might work but your going to need more attenuation as the base system sensitivity was quite high. The 88Db is at 15 ft.

    Good Luck

    Rob

    http://www.jblproservice.com/pdf/Net...tics/N2400.pdf

    http://www.lansingheritage.org/image...ome/page18.jpg

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