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    ... Back in the 70's

    If one had the $$$ and wanted to put what would essentually be a recording studio set-up in their home...,

    Marantz and triamped Altec Big Red Supers. Chartwell LS3/5A's for nearfield monitoring....
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    Probably better to just elevate and/or tilt the...

    Probably better to just elevate and/or tilt the cabinet so the tweets face your head.
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    Could this come down to damping factor?

    Could this come down to damping factor?
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    Actually, I was thinking that there is a way to...

    Actually, I was thinking that there is a way to at least A/B it with the current set up as the 10" and Heils are separate from the 18"s and a simple double throw switch could be used to select which...
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    If you saw the spectra for two speakers and one...

    If you saw the spectra for two speakers and one was obviously smoother than the other, wouldn't you want to go with the visibly smoother pair even if you didn't think you could hear a difference? I...
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    3"

    3"
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    Vertical alignment vs offset certainly shows up...

    Vertical alignment vs offset certainly shows up on the RTA as peaks and dips.
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    Spectrum of the 2241H at the seating postion. I...

    Spectrum of the 2241H at the seating postion. I get similar from the 10" except that the dip is shifted by one band on the analyzer. May be floor and/or back wall bounce.

    I did put a piece of...
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    Did Karlson Blow the Kurve?

    I am trying to reduce floor bounce interference and moden technology typically lines up the woofers vertically to distribute the bounce over a longer area reducing its impact.

    My intent is to do...
  10. So What's More Important..., a Smooth Frequency Response or Time Alignment?

    I have noticed that when using the RTA in the seating position with the Ethyl Mermans, I get a smoother frequency response at the bottom end of the frequency range (big dip is mostly removed) when...
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    I use a Behringer Ultracurve Pro deq2496 for the...

    I use a Behringer Ultracurve Pro deq2496 for the RTA. It has 61 bands so basically there is a separate band for every two notes of the musical scale.

    https://youtu.be/mYZVFjxkMq8
    ...
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    Actually, you can't not eq for room problems when...

    Actually, you can't not eq for room problems when that is the only space you have to develop/test in.

    Whatever problems are in the speakers and in the room will show up on the RTA and will be...
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    No, the test is inconclusive in so many ways. ...

    No, the test is inconclusive in so many ways. The results may be so small as to be hearable, but not readily discernable on the meter that is in continual fluxuation of "whole numbers." ...
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    I made up a charge coupled first order (two 10...

    I made up a charge coupled first order (two 10 mfd Spragues, 2.2 meg resistor, 9 volt battery) and connected it to a Heil.

    The RTA shows no discernable difference in the spectrum of pink noise...
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    It's not that it "doesn't work," but maybe it...

    It's not that it "doesn't work," but maybe it doesn't work exactly the same as a non-charge coupled version without the extra caps and dead/missing battery..., and isn't that what we are trying to...
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    Not quite the same. Nobody builds a regular...

    Not quite the same.

    Nobody builds a regular crossover by building a charge coupled crossover and leaving out the battery, and without comparing a "dead" charge coupled crossover to a regular...
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    Thanks for the invitation.

    Thanks for the invitation.
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    They look very nice. Is there any way that we...

    They look very nice. Is there any way that we can hear a video? Do you have some recording method of quality?
  19. Note that the 18"s are completely sealed off with...

    Note that the 18"s are completely sealed off with the foam core. It costs some deep bass, but I'm thinking that cutting it away from the ports would help that.
    https://youtu.be/2NUSWBgk0-E

    ...
  20. Thinking Outside of the Box Leads to Closing the Box

    I've been dealing with a suck-out in the Ethyl Mermans ~250Hz. I get it on both the 18" and 10" (not so much on the L300s), close in frequency (adjacent band on the RTA 1/6th octave apart) and I...
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    Doesn't matter the absolute polarity of the...

    Doesn't matter the absolute polarity of the components, only the relative polarity after the crossovers that can shift their phase and it's not always easy or clear and cut. I use an RTA and look...
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    There are mistakes! From discussion here, seems...

    There are mistakes! From discussion here, seems like about 1 in 50 is backwards. I have a pair of 2241Hs and they are different in that one moves the cone out with + on red while the other goes in...
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    Yes, designed them myself with lots of tweaking...

    Yes, designed them myself with lots of tweaking and some dumb-azz luck due to a miswiring that sounded "right" (the black art everyone talks about).

    I don't quite understand how the 6.8 through...
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    Latest and Greatest! ...

    Latest and Greatest!

    http://www.audioheritage.org/photopost/data//500/medium/ScreenHunter_211_Jul_30_11_40.jpg

    Joni Mitchell doing "Woodstock" on the Ethyl Mermans. This is why I call them the...
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    Just have to know where to look. I used these on...

    Just have to know where to look. I used these on the Ethyl Mermans for the 16 ohm 2251Js. You can also get them on ebay if you look for Fender L-pads. Ebay doesn't list the impediance, but uses...
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