235 Build - Page 6

Hmmm. Interesting. If those harmonics exists, and I believe you are correct that they do, wouldn't they have been recorded when the music was played originally, and then the harmonic itself be played by the speakers. That is, the harmonic exists in the encoding on the disk, or mp3, or whatever it is, so your processor actually sends the signals to your speakers to play the harmonic as well as the actual note at 500K

The flip side to that are not recorded, but are generated by the man behind the mixing board.

Wow! Great list NicksHitachi.

Yeah, that is what I meant to say in my post:p

I am considering DIY and I am not trying to hijack the thread at all. But, maybe 235 would like to know what DIY speaker you are building.

I honestly did not think human hearing extended beyond 20K at least appreciably so that is new info for me. I am curious to know how high I can reliably hear and more importantly what my ability is to pick out those frequencies amidst all of the other noise from the recording. There is an online hearing test around here somewhere but I don't know how accurate it is.

So personally I would go for below 20 if I had to choose just one because I know I can feel just fine. I think most people can hear to about 15-20. I would consider DIY subs much easier than DIY speakers and you could get to below 20 for a lot cheaper that way.

Again, my understanding only, I'm not an expert.....

I don't recall ever actually hearing the difference tones recorded. I've only experienced it live (both playing and listening). I did see a couple of 'net references that theorize that is has to do with how the human ear responds to the two tones. The recording mikes would not necessarily respond in the same way so may not pick it up.

And again if I recall from college, 22K is the limit.



And back on topic a bit...I'm surprised at all that there are speakers in these ranges. Maybe I'm not looking at high end enough speakers, but it seems to me that all of the speakers I've looked at are at least 20-20K, with some going down to 15 - 20K. I can't recall seeing any that only go to 15K.

Remember +/-3db actually means it could be down 6db, it just depends on where you draw the FR line. ;)

 

This speaker is specd to 100KHz +/-3db, but get your checkbook.  However it has relatively low sensitivity and would never provide 105db cannon blasts at the seated position.  Its still an awesome speaker, just not the tool for the job in HT.

 

Now This speaker is specd to 18KHz +/-3db, so theoretically it could(its probably not) be down 6db @18Hz depending on where we draw the line on the FR.  Now couple that with a db or two loss in the upper frequencies from firing through the screen, and you guys see where we are at.... pretty clost to 15KHz for a flat line.  However it can deliver the cannon blasts with enough umph to scare you(and your guests :P) and would most likely do admirably(but not perfectly) with music as well since this isn't a critical listening room and blah blah blah.

 

Check this out:

 

Speaker Directivity

 

THX Reference

 

Speaker Sensitivity

Sweet looking...! What kind of seating is that hiding behind?

Some very fine looking speakers, Ill bet they just sound terrible!

Oh I go week in the knees when I see those towers naked! Let me tell you they sound better than they look which is really saying something as they are beautiful speakers. I should know I own a set in the matte finish. What did you do as your center and surrounds? I went with the matching center and the 170 SE as my surrounds. You will LOVE these speakers, a very honest and true sound and they will really rock. I have mine paired with a Yamaha Aventage 1010 and an Emotiva XPA-3......I don't lack for power. I topped it all off with a Rythmik FV15HP and I could not be happier!

Enjoy your new babies!

Regards,

RTROSE

Same seats i'm looking at because of the shorter overall width, give us a review once you've had a chance to try them out.

Likely to get the tweeter up and away from any shelf or whatever your sitting on for diffraction mitigation. Always bring the center out to the edge of shelf so edge of shelf lines up with the plane of the baffle or slightly behind if possible.

Also to get tweeter closer to ear height.

That center is gorgeous too!

Yes it is...!

Its probably not that big of a deal but ideally those side slats of the column should be plumb with or slightly behind the baffle. Now will you hear it? Prob not but it probably causes a measurable diffraction/reflection artifact.

A bigger issue i would consider addressing is turning those surrounds vertical and angling toward the listener. Are you running the surrounds @90degrees or slightly behind?

Nick,

I think he wants to mount them as in the diagram so he can taper the columns at a steeper angle. I think in an ideal world you would want to mount them vertically and aim them towards the listener. I would guess that while not ideal you might not actually perceive much difference even if there is a measurable one.

I would however try to keep the edge of the speaker away from the edge of the slats as Nick points out. I would guess thought that if you are going to stick with the drawing then I would keep the orientation with the tweeter down as it is closer to the listeners ear that way.

BTW those Ascends are gorgeous, but I'm a little biased!

Regards,

RTROSE

Not sure if there are correction tables for that meter? The ones ive seen were black, had a guage at top, and a line out so you could send that signal to measurement software.

So what exactly were the "adjustments" that were needed? Also, how are you liking the chairs overall, etc?

Those look great! What is the width of the back row in that configuration?

Very nice seating 235!  I have a sectional in my living room and its awesome to lounge on or entertain, but nothing says lets get busy watching a movie like theater recliners!  Period.

Thanks for posting 235! These are the seats I am looking at, look good,

Whats the input sensitivity of the EPX4000?  Ive never had any probs driving a pro amp to clipping with most modern AVRs......