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    W15gti

    I know the W15Gti subwoofer doesn't get much love here, but in my opinion (after having owned the 2235H, 2245H, 2241H, and 2242H) its just as good as the rest of them.

    The only thing that...
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    No. I'm pretty sure Mr. Widget was talking about...

    No. I'm pretty sure Mr. Widget was talking about the JBL Sub1500. Few years back Parts Express had a blowout sale on them. I don't think the Sub1500 is around anymore.
  3. Vertical Response

    Here is the measured vertical response of the Heil AMT1 (ignore the SPL magnitude - these measurements were taken 1M from the AMT at 90db volume).

    Vertical response is good to 10K +/- 10 degrees,...
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    Is the 80-90db at 1m?

    Is the 80-90db at 1m?
  5. Widget - see this crazy thread at Klipsch Forums...

    Widget - see this crazy thread at Klipsch Forums - https://community.klipsch.com/index.php?/topic/188177-double-stack-ess-amt-1-with-wings-possible-kit-for-heritage/
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    Duly noted - I'll take additional measurements at...

    Duly noted - I'll take additional measurements at 90db and will show 2nd, 3rd, and 5th.
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    Few Measurements

    Took few measurements this evening:

    (1) Sample 1 vs Sample 2 - Frequency Response
    (2) Sample 1 - Distortion (2.83v at terminal - mic 20in from driver)
    (2) Sample 2 - Distortion (2.83v at...
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    Thank You! - I look forward do it.

    Thank You! - I look forward do it.
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    You are right. I'm in the process of building a...

    You are right. I'm in the process of building a bass cabinet to go along with these. I'll see how difficult it would be to get them to match (moreorless) via the crossover.
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    Need Measurements

    Hi All,

    Can someone please post raw measurements of the AMT drivers? Both Left and Right - just the AMTs.

    I just measured my pair and there is about 3-4 db in overall variance, with one...
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    I don't think I will use a protection cap. They...

    I don't think I will use a protection cap. They can be safely played down to 800hz with a second-order crossover <- that makes them pretty robust in my book. Plus given their efficiency, I plan on...
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    The Heils have arrived!

    Per UPS tracking, the Heils have arrived. I plan on taking measurements later today/tomorrow.

    Wanted to know if people are using a protection cap (e.g. 50uF or 80uF) in series for measurement...
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    Thanks, Earl! That is pretty impressive range...

    Thanks, Earl!

    That is pretty impressive range (500hz - 20Khz). May not be untrue that it can be crossed as low as 800hz. Mine will not be shipped now until tomorrow; thus, I don't expect to have...
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    Rob - I believe that design was from early 2011. ...

    Rob - I believe that design was from early 2011.

    I really doubt my driver measurements will match Dennis's.

    I must say you got your hands on a pretty decent pair. While there may be response...
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    Gate Measurement

    Jmpsmash,

    Have you tried gating your measurements? Your measurements seem to include the room response.

    You can look at the Impluse Response to see when the first reflection arises, and then...
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    I just ordered a pair

    I just ordered a pair. I will try Dennis's crossover, but before I do, I want to make sure my raw measurements are consistent with his raw measurements.

    For those at that are curious, see...
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    100% agree with this!

    100% agree with this!
  18. Anyone in the DC/MD/VA Area Own a TAD/Yuichi Based Speaker System

    As a wood working project, I would like to attempt building a pair of Yuichi horns.

    However, I don't what to pursue that endeavor without having listen to a similar system.

    I was fortunate...
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    I ended up selling the Cornwalls a few years...

    I ended up selling the Cornwalls a few years later for $1,000. At that time I had purchased them, I had no idea that the "Decorators" (were the cheapest option when they first sold), they were the...
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    Good Sound

    I was born in the mid-80s and grew up listening to mp3s players and basic Best Buy budget speakers.

    One day (in 2007), while visiting my sister, I was perusing through local classifieds...
  21. This is great idea. I will take all measurements...

    This is great idea. I will take all measurements with cap in place, and then remove it for my final measurements. I am using sweeps to take measurements - so I'll adjust the bottom end to start the...
  22. Sorry - to be clear, this won't be for...

    Sorry - to be clear, this won't be for active/bi-amp setup.

    I'm just delving into speaker design and learning how to take measurements and then using simulation software (e.g., Xsim, VituixCAD,...
  23. When measuring compression drivers with waveguides/horns.....

    Is there is a need to include a series capacitor to protect the CD? I'm not measuring at loud volumes on anything.

    If the answer to the above question is "Yes" - would it not impact the measured...
  24. Troels is a great guy. Always happy to answer any...

    Troels is a great guy. Always happy to answer any questions. His designs are highly appreciated in the diy community and he is very thorough with his documentation with the design/build process.
    ...
  25. Troels G. - "The Loudspeaker" - Inspired by JBl 43xx series.

    I thought some would enjoy this:

    http://www.troelsgravesen.dk/The-Loudspeaker.htm
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