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  1. Replies
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    2214's should work fine based on use in the 4425....

    2214's should work fine based on use in the 4425. I use AMT's down to 850 Hz no problems.

    Rob:)
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    Hello Eric It's not the T/S parameters it is...

    Hello Eric

    It's not the T/S parameters it is the graph of specific magnets properties. I have attached a graph that shows the demag points. Please don't ask me to explain it :) Just do a Google...
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    Hello I will give it a shot. If you graph the...

    Hello

    I will give it a shot. If you graph the parameters you end up with an sideways L. The knee being the bend on the curve where you see a more rapid change in value. Once you go past that...
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    This is how the round overs work with the...

    This is how the round overs work with the waveguides. Not bad it's not flush but the proud portion of the waveguide I don't see as an issue. Working on the bass cabinets over the weekend with all the...
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    Without a rather concise description of what you...

    Without a rather concise description of what you did and how they are configured with the Rane you won't get much help. There is absolutely no reason to tri-amp them. If your crossover is using 24DB...
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    http://www.audioheritage.org/vbulletin/showthread....

    http://www.audioheritage.org/vbulletin/showthread.php?4031-The-Great-Alnico-Ferrite-Debate

    Rob:)
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    Hello Unfortunately that's not my kit. I am...

    Hello

    Unfortunately that's not my kit. I am also wondering how the tweeter is attached the the Le-14. Normally the LE-14A has a vented pole piece. This appears to be blocked by a solid label. I...
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    Here this might help. Do a Google image search ...

    Here this might help. Do a Google image search

    http://www.troelsgravesen.dk/JBL_LE20-25.htm

    Rob:)
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    Hello Ian Yes I looked at it but I didn't see...

    Hello Ian

    Yes I looked at it but I didn't see a worth while improvement going bigger compared to using a bump filter. I reversed and found a smaller box sweet spot using the bump filter I had...
  10. Thread: L 300 do-over

    by Robh3606
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    Very Nice! Rob :)

    Very Nice!

    Rob :)
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    As opposed too "Here's what I did on my summer...

    As opposed too "Here's what I did on my summer vacation"!!!! Well if we all have some forced time off that may not be a bad idea. Beats wasting the time and doing nothing or watching sports reruns...
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    Just bringing this back to life. Starting to cut...

    Just bringing this back to life. Starting to cut wood on the cabinets wondering how some of you have used your 2216nd's. I am going passive and not trying to clone the M2. Same with the cabinet I am...
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    Hello Widget I have a pair of 2216Nd's so I am...

    Hello Widget

    I have a pair of 2216Nd's so I am going to build a bottom cabinet same volume as a 4700 system. Tuning TBD. Similar to the Le-14H-3 bases I built for my Arrays. I also have 476Mg's...
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    Well it's official just got the balance of the...

    Well it's official just got the balance of the materials for my cabinets at Home Depot. Figured I had better get them now before they get locked down with the corona closings. They are talking about...
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    Whats the problem? They should work just fine in...

    Whats the problem? They should work just fine in passive mode.

    Rob:)
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    Place Holder Robh :)

    Place Holder


    Robh :)
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    How are the tweeter leads brought out to the...

    How are the tweeter leads brought out to the terminals on the frame? That has to be a key factor when you re-cone. How do the tinsel leads attach to the tweeter VC??

    Rob:)
  18. Hello Ian Wow that's something to remember. I...

    Hello Ian

    Wow that's something to remember. I have re-foamed a decent amount of drivers over the years including 2 pairs of 2235 and Fs were within a hertz or 2. Same with 2122's 2108 125 2214...
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    I will cast another vote for Emotiva as I have...

    I will cast another vote for Emotiva as I have some of their gear and it's well made and sounds great. Revel speakers even new offer really impressive performance I really like my Performa F206's The...
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    Those are something! Change is good Rob:)

    Those are something! Change is good

    Rob:)
  21. Good point I am taking it as sheer impact you...

    Good point I am taking it as sheer impact you know the visceral impact. A pair of 15's, especially depending on box tuning and placement can damn near beat you to death. Especially 100db 1 watt...
  22. Easy just do an impedance sweep and the lowest...

    Easy just do an impedance sweep and the lowest value between the 2 peaks is your box tuning. As long as your are in a Hz or two all should be fine.

    Rob:)
  23. You have me scratching my head. If you don't have...

    You have me scratching my head. If you don't have it now more power is not going to do it. You should have the "kick" at any power level. Even if you X4 your power it's all headroom and at...
  24. Make sure when you run your tests the vent isn't...

    Make sure when you run your tests the vent isn't blocked. That low FS? could be a very tired spider. My 2216Nd have a lower than spec FS. They were subjected too the 100hr power test so well broken...
  25. Thread: Harkness C-40

    by Robh3606
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    I would check them out as well. If the drivers...

    I would check them out as well. If the drivers are in good shape I bet they would be quite nice!

    Rob:)
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