Green Mountain Audio Chroma HX

As the original poster on this thread, I just want to comment that both Duke of Audiokinesis and Roy of Green Mountain Audio are among the good people of this industry.  I don’t currently own any of Roy’s speakers, but we have spoken on the phone at length on numerous occasions. I’ve never had the opportunity to hear any of Duke‘s creations, although we, too, have spoken on the phone a few times and I am impressed by his genuineness and desire to make a great product. Whether or not a speaker from either of these people floats your boat is a legitimate question, but in my experience, they are both  very clever, qualified designers who pour themselves into their work. 

Wikipedia says "Ad hominem, short for argumentum ad hominem, is a fallacious argumentative strategy whereby genuine discussion of the topic at hand is avoided by instead attacking the character, motive, or other attribute of the person making the argument,"

That sounds like what you're doing Audiokinesis. You accuse me of dishonesty and question my motives all the while avoiding addressing any of the criticsms I've made to justify my belief that the product is flawed.

I've made my points in the other green mountain audio topic.

If you want to respond to the points feel free. 

@rebbi 

 

I don’t currently own any of Roy’s speakers,

why not?
What made you decide not to buy them?

Kenjit: "That sounds like what you’re doing Audiokinesis. You accuse me of dishonesty and question my motives all the while avoiding addressing any of the criticsms I’ve made to justify my belief that the product is flawed."

So now you accuse me of doing what you did (avoiding questions) when you NEVER directed a question at me until just now?  Kinda hypocritical, don’t you think?

I expect you to answer my questions about your room and amp in exchange for my responding to your criticisms.

Quoting kenjit again:

"1. Wrong box / woofer combination
2. The tweeter used in mine were not impedance corrected and not rolling off sufficiently.
3. Crossover was not optimized"

Here are my responses:

1. All box/woofer combinations involve tradeoffs.  You may disagree with Roy’s choice of tradeoffs, but that does not make them “wrong”.  A bigger box might go lower at the expensive of pitch definition.  A different woofer might have more bass but not meet the requirements for a time-coherent two-way speaker.  Did you try positioning the speakers to take full advantage of boundary reinforcement?  The speaker/room interaction dominates the bottom few octaves.

2. A tweeter does not necessarily need to be impedance corrected; competent designers aren’t limited to cookbook approaches.  And a first-order filter (essential for a time-coherent design) inherently has a gentle rolloff slope, so you have confirmed that Roy was doing that right.  Some tweeters can handle it and some cannot, it all depends on the specifics, but Roy is plenty smart enough to choose one that can.  I bet you could too if you had the right test equipment and used it properly.

3. How in the world do you know that the crossover is not optimized?  Have you seen the measurements?  Were you there when Roy presumably said, “It’s been a long day, I’m not going to optimize this crossover”?  What in the world basis do you have for making this kind of statement?  You don’t like the speaker, that’s one thing, but don’t start making things up.  There’s a word for that.  And aside from an incredible stroke of good luck, it is impossible to even approach time coherence without a LOT of optimization.

Now it’s your turn.  Show us that you’re not a hypocrite.  Tell us about your room and your amp.

Duke

Have you seen the measurements?

I asked green mountain but they refused.

Tell us about your room and your amp.

That would be off topic. This is about the green mountain chroma speakers. Not rooms or amps. I tried different rooms and had the same problem. How do you explain that? How do you explain that the green mountain authorized dealership came round and set them up using the same room and amp and made no comments about them?
Where is the proof that the green mountain chroma speakers are time and phase coherent?  Where is the proof it's response is flat? Where is the proof the cabinet is inert and free of resonances? 
Where is the proof that using a smaller box for that woofer brings any advantages?  have you heard the speakers?  Taken them apart? Modified them? I've done all those things. I know what I'm talking about. Putting a woofer into a cabinet changes it's response in the upper range. Do you agree? Therefore a 0.21mh coil will not automatically result in perfect first order acoustic roll off. That inductance is arrived at for an electrical 4 ohm load at 3khz crossover point. To get a first order roll off, you'd need to measure the raw woofer in the cabinet. Then you'd need to do a series of simulations to get the desired acoustic slope. Where is the proof this has been done? It obviously doesn't look like it has. So why is it wrong for me to state that no measurements were made?