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In the Forum: Audio Discussions
In the Thread: Crossover Design
Post Subject: Re: EdgarHorns crash survival guidePosted by drdna on: 12/4/2005

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 Romy the Cat wrote:

Drdna, generally I would not agree that your assessment of the EdgarHorns is correct. There is nothing fundamentally wrong in them that would prevent them to "disappear" in the room.



Well, this is good news.  It means I have a goal which is achievable.

 Romy the Cat wrote:

Yes, the upper bass horn is not time aligned, rectangular and more sounds like a direct radiator then a bass horn but even as is it should be all necessary loudspeakers "disappear" tricks. What you describe sounds to me more like you confused the polarity of your loudspeaker connections. Check the acoustic phase of each drive with a phase tester. The damage you are describing is too sever to be a “design fault”


Well, I did already switch the phase and then it truly did have the spacy out of phase sound, so I thought this was not the issue.  However, I am going to go back and check this again with tweeter, midrange and lower midrange again.  BUT, I think it is more exactly what you say that the midrange horn is round and the lower midrange horn is rectangular.  They sound different and it is more easy for me to hear the presence of the rectangular horn.


 Romy the Cat wrote:

Well, I do not know your system and I do not know what in your case means “EdgarHorns”.


These are the EdgarHorn Titans with the folded bass horn.

 Romy the Cat wrote:

Then I would acoustically time-alighted all channels. After this I would disconnect a LF section and tweeters. Then I position the speakers at the distance of your choose, pointing them toward to your shoulders. Then I would move the speakers apart form each other, keeping them aiming to your shoulders, unit the mile image being to step back. After this I would push the EdgarHorns 2-3” back closer to each other and begin very slightly tow-in and out them until the imaging between then would not get a curve that you find “correct” for your room. Hereafter, play with minute towing-in and out of EdgarHorns and tune the space between the speakers more priestly. After you find a correct approximate positioning of your MF section begin to play with the output volume of your upper bass channel. The EQ that Bruce did in his default crossover is too generic to be correct for any room and you should tine your upper bass horn +/- 1dB -3dB to make sure that it would turn your room on. (An RTA would really help). Then add the LF channels at approximately minus 3dB of thier normal volume. Listen like this for a week, get use to and do not introduce the full LF bloom. Then slightly increase the LF, until it becomes flat at your RTA. An a few weeks you might begin o ass tweeters, very slowly and very concretively


Yes, I have done a sloppy job of this, just hooking up the speakers and moving them until I found the best position for them which is a kind of DPOLS; if I move the speakers even a fraction of an inch in any direction there is a big drop off in sound quality and it becomes really intolerable to listen to it and I have the big urge to jump up and move it quickly back that 1/4 of an inch, BUT I did this just setting up the speakers and moving them as a unit and NOT moving the lower midrange and tweeter sections individually so this maybe is the problem.

I will take this advice and go back and check the individual speaker sections to make sure they are aligned and in an optimal position individually.

Adrian

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