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Building a wedge monitor

Discussion in 'Amps and Cabs [BG]' started by JayPeaTea, Jan 2, 2002.

  1. JayPeaTea


    Jul 24, 2001
    Hello everyone!
    This is my first post here.
    (Finally got enough courage to actually post
    something. I've been lurking for over a year :).)

    And now I need you gyus to check my (looney)idea

    I've been thinking about getting a new cab - 115 or something,
    to go with my 410. I purchased a new amp a while ago so I left
    my Hartke 2115 combo at the 'other bands' practice place
    (I really hated carting it between practices... ).
    I used the 410 and 115 together, so now my 'self esteem'
    is 15"shorter/lower (hence the need for
    another 115 or 210) :p.

    I'll soon (next monday) take part in a 'basic/advanced woodworks' class
    at the local 'institute'... They have pretty much anykind
    of wood-/metalworking equipment available for us to use...
    (it'll last till April = only 42 h. in all tough.)
    So I tought; "while I am at it, why not just build a new cab - Yeah!
    ...in wedge shape - yeah, even better."

    The 410XL goes nicely to 30Hz so the wedge won't have to go that low.
    But it would be nice if I could use it on its own too...
    I was thinking about getting either JBL or Eminence speaker.

    JBL looked nice until I checked the frequency bandwidth...
    So based on the specs I'm leaning towards Eminence Legend B15 or B102

    I'll build it almost like the Fane's 'large wedge'
    (60, 30 and 90 degree 'standing' angles, already forgot the website I
    got the blueprints from...)
    I'll use two round vents istead of Fane's square duct
    and use just the 1x15, 1x12 or 2x10 not the tweeter like on Fane's desing.

    Check the eminence specs @

    http://www.eminence.com/Pages/Legend/leg b102.html
    http://www.eminence.com/Pages/Legend/leg b15.html

    don't know about the prices yet tough...
    Unfortunately they don't seem to have 12" 'er designed for bass :(.

    I'd rather make 115 or 112 since it would be easier and probaply cheaper than
    1X+tweeter or 210.
    (ie. no extra electronics like a crossover).
    I am open for suggestions!

    Ok, so now tell me if therse's something wrong with this desing
    and give me some recommendations for the woofer

    What I think I'd need:
    - 8 ohms or 4 ohms if just one 10" er.
    - 'about' 200W RMS power rating (box total)
    - freq bandwidth atleast 40-4000Hz .
    - adequate Xmax (?).
    ( - No need for perfect hifi sound, it's just a monitor remember!)

    Ps. Thanx for having the patience to read the whole thing :).
  2. Ok go to www.siliconchip.com.au and email them in regards to a foldback wedge they published in their magazine about 2 years ago. I forget the issue. I bought the mag but lost it. or someone took it (ahem singer-boy!).

    It was 2x10 with a horn. Very good response, be perfect for what you need. Ask them what issue it was and if they could post a back copy. or even a photocopy of the article. They may even email you the lot.

    Just a thought. They did all the hardwork, you just follow the steps.


  3. Almost as easy as Paint by Numbers
  4. JayPeaTea


    Jul 24, 2001
    Ok. The mail is on the way.

    Can you gyus remember what kind speakers were they using...
    That's what it all comes down to, right - the speaker of choice
    ('cab to match the speaker...'). Not too shure if they are available
    here on the other side of the planet.
    ...though I could just mod it a bit to match some
    available speakers that was kind of the whole idea in the first place.

    But I am still open for a good suggestion as what 12"/15"
    speaker (available in northern Europe)should I use if I'd just take the easy
    route and build either 112 or 115...

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