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Thread: Where to mount the075/077?

  1. #1
    Senior Member jblwolf's Avatar
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    Where to mount the075/077?

    Greetings,
    glad to see everythings up and running,Ive been working on mounting my 2390 horns on top of my cabinets for some time now and I'm at the point that I need some input for the forum,please see picture--I guess my question is,should I mount the 075/077 under the 2390 or mount it on top of the 2390
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  2. #2
    Administrator Robh3606's Avatar
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    Well I would look at the height from the floor as a major consideration. The 2405 is very beamy in the vertical axis so I would mount it as close to ear level as I could. You can go either way. Most of the large format monitors had it next to the midrange horn. The 4333 was above and the Classic Audio Reproduction speakers the Westlake monitors the new 4368 all have it bellow the horn at ear level.

    Rob
    Last edited by Robh3606; 04-18-2003 at 09:05 AM.

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    Administrator Mr. Widget's Avatar
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    I agree with Rob, you want it near ear level, if this isn't possible you can angle it upward or downward toward your expected listening location. Secondarily I would be concerned with the cabinet or mid lens causing early reflections. This can be reduced by using some type of sound absorbing material.

    Finally, yes the 077/2405 is beamy vertically, but the 075/2402 is beamy in both axes.

  4. #4
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    Well.... I prefer the 2405 pointed directly away from the listener, firing into the fiberglass lined loudspeaker enclosure. It's a courtesy thing...

    Now the 077 looks too damn cool to mistreat in such a manner. That baby needs to be up front and center and at eye/ear level; just leave the wires leading to it unhooked

    ROFLOL!

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    Administrator Mr. Widget's Avatar
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    OK Junior Member, don't forget your medication.

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    RIP 2010 scott fitlin's Avatar
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    medication!

    Viagra here, get your red hot Viagras here! Good for when you listen to vintage audio.

  7. #7
    Senior Member jblwolf's Avatar
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    if I mount the 075/077 under the horn it would be ear level-seated-

  8. #8
    Administrator Mr. Widget's Avatar
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    That should work out well then.

    If it is very close to the mid lens but mounted on the plane of the front of the horn and rear of the lens, I would be concerned about the highs bouncing off the underside of the lens.

    I noticed that you have referred to the use of an 075/077. Are you planning on using both for a comparison?

  9. #9
    Senior Member Ian Mackenzie's Avatar
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    Heres a good example that worked well

    Thats what you call WELL HUNG speaker, no viagra required
    Ian
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  10. #10
    Senior Member jblwolf's Avatar
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    Yes,I will be trying out both models,I also be trying out lx5-lx13-n7000-n8000 and rane ac23,I'm still working on the other channels(sub,rear,side)as well,at this point I could add both drivers at the top and bottom,but that maybe overkill,so I think I will just add the driver to the bottom of the horn and see how that sounds

  11. #11
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    Well I am very interested to see what you end up preferring. What was the bass driver again?

  12. #12
    Administrator Mr. Widget's Avatar
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    Yes, what is the driver compliment that you will be using.

    I am not a big fan of the LX-5 N7/8000 vintage crossovers, you might consider building your own based on newer JBL pro designs. I have done this with great success. (With a little help from Giskard)

    I was using the Rane AC 23 in my home theater, I am now using AC 22s for my three front channels. They are very flexible, but I don't think the circuitry is as open and free from a opamp grunge as I want in a dedicated two channel music system.

    Don't get me wrong, music sounds fantastic through them, but just not as good as it can get.

  13. #13
    RIP 2010 scott fitlin's Avatar
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    that opamp grunge

    Mr. widget, what your describing is something Ive experienced with all 24 db per octave filters! Its not open, sounds compressed as you push it. On the other hand, 18 db filters sound the opposite. very open and dimensional and free, at least more free, to my ears from grunge! rane gear in particular has that hashy mid.

  14. #14
    Senior Member Ian Mackenzie's Avatar
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    Guys,

    Keep an eye on passdiy.com, Neslon Pass will be bring out a diy design active crossover soon called The High Low Pass, with discrete Jfet/bjt buffers.

    This will no doubt be very transparent and the navana of bi amping.

    There is a lot of debate on at the moment about the best topology for active crossovers, 4th order L/R on paper looks the best but not always the best sound according to some.

    I found this design on diyaudio which apparently sounds very good

    Ian
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  15. #15
    Senior Member Ian Mackenzie's Avatar
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    The active discrete opamp will look something like this schematic,

    I'll keep you informed about the pass project

    Ian
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