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Zoef

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    JWC Bass Horn

    in Technical/Restorations

    Posted




    There are specs of the K-31 in the original AES Jubilee description article.  That is all I'm aware of.








     








    The original minipunch had this woofer.....as this is the only 12" I had at the time.








     








    BoB Crites 12" woofer should work.  There are really many options.  Again Delta LFA would be my first rec as it is not that expensive.  K31's will work great....if you can fine any.  I had a bunch in the day.....all gone now. 




    Thank you!

    JWC Bass Horn

    in Technical/Restorations

    Posted

    If my eyes don't d.... he is using tc1244 woofers to test the bins.
    Got the same questions, is it universal, size etc.
    And do you need a tester in the netherlands[emoji56]
    (To see if the kit survives the long transport ofcourse [emoji12] )

    .

    in Technical/Restorations

    Posted

    Maybe this question is a old one... (sorry)

     

    Is there a ideal dcr value for the bass section?

    (for the AA and the Alk universal)

    If i understand correctly: lower dcr is not always better. Correct?

     

    .

    in Technical/Restorations

    Posted

    On ‎2‎-‎9‎-‎2016 at 11:42 PM, karlson3 said:

    hi Zoef  - I'd really like to pay no more than what Erse Pulse-X cost  - -  I'm curious about the "tone" of electrolytic caps battery biased and wonder how Nichicon FG back to back with their center ++ junction biased with say 9vdc and 200K would sound vs cheap film caps  (?)

     

    Budget wise i would not know of a "better" cap to use. One comes to mind..wima mkp10.... but now i'm being a heretic ha!

    Wire recommendation

    in Technical/Restorations

    Posted

    I'm using 16AWG Silver Plated PTFE Wire  (from john on ebay, about $15 for 25 feet.) for all my projects.

    Even in my amps. My whole system uses the same wire. Yes i'm crazy ha!

     

    In a (universal) crossover i used  the 10 awg version of this wire for ground path.

    Overkill i know.

     

     

    Edit: imo this is about the best you can do for wire/cable if you are on a "budget". (bang for the buck) We can always do better.....at what price and gain?

    A good pure/oxygen free copper (with or without silver plating) wire/cable with ptfe insulation is always a good upgrade if your speakers have the old 70s wire.

     

    I do not know john...no advertising.

     

    First Watt Clone - The DIY M2

    in Solid State

    Posted

     

    Good work!!!

     

    Got a mini-aleph ("half"a Aleph 3) i am working on. Wish i did it your way and used a ready made chassis...... still got 200+ holes to drill :wacko:

    For the extra $40 / $50 or so dollars to get the fully drilled and tapped chassis - it's worth every cent and that = equals money well spent

     

    YES!

    • Like 1

    8 ohms bass drivers. Cabs and crossovers. updated

    in Technical/Restorations

    Posted · Edited by Zoef

    Guys,

    Would it be possible to use a 8 ohms bass driver in a La Scala, Klipschorn or Belle?

     

    ((EDIT: To be more specific.. we are only talking about 4 ohms vs 8 ohms.

    I am awere about all the other parameters needed in a speaker design)

     

    Also, can it be used with a Universal or (super)AA crossover?
    Since it is only a 2.5mh inductor in the bass section i don't see a problem there. Am i wrong?

    I know the Ap12 was designed to be a 6 ohms crossover with the 1 mh (Le) voicecoil of the k33 in series with the inductor. So a 8 Ohms driver would be a no go?

    Br

    Beyma 15p80fe/n any thoughts?

    in Technical/Restorations

    Posted · Edited by Zoef

    It's a design for a midbass horn using the Beyma driver, with about twice the mouth area of a LaScala.

    It doesn't go any deeper than a LaScala, but is smoother because of it's larger mouth.

    It would probably work well in the Klipschorn and Belle, it may require a cabinet modification to fit the LaScala.

    It will also need a front gasket spacer for any of those.

    Beyma make very good drivers, I have a bunch of their 700W 12LX60.

    http://www.usspeaker.com/beyma%2012LX60-1.htm

    Thanks!,

    About the gasket. How thick does it have to be? And are these drivers efficiënt enough? ( 8 ohms )

    Beyma's and faital are cheaper to buy for me.

    I pay double for us stuff....taxes taxes taxes...........

    Would like to buy "universal" drivers. (Hope explain this ok) i mean drivers i could use in any of the big klipsch designs.

    Next to the beyma's i am very interested in the faital 15pr400

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