[John Casler]

Or put cement blocks under your chair. 

I had actually done something similar when I thought it was needed .



I guess a better solution would be to angle the tweeter down some at its mount on the V60 to hit the same sweet spot.

I think you'll find that you won't need to adjust your listening height, but you may need to "slightly" adjust the "balance" between the tweeter and the panels.

You'll notice that VMPS speakers "don't" rely or suggest that the tweeter be at ear level.  In fact each design is slightly different with only the RM40 and the RM v60 set up in a "balanced" line.

We did have the RM/x with the Free Swinging Tweeter (FST) that DID have a vertical convergence angle, but you never heard that the highs sounded like they were coming from over 6 feet high.  In fact the soundstage height was virtually the same as the RM40 and RM v60. (depending on your listening distance)

Having significant experience with the 626R, the RM30, the RM2 has shown me that excellent results can be achieved with the tweeter significantly above or below the ear. (this is true to a lesser degree with the Spiral Ribbon which has slightly reduced vertical dispersion)

The RM30 High Boy Tweek was actually the most telling example of this where the tweeter was approaching a foot above the ear, and highs were perfectly integrated.

Also in my RM40s, the tweeter is well below my ear, yet the highs are wll distributed to my listening height (I'm 6'3")

I think it has to do with 1) The general vertical dispersion of the specific tweeter, and 2) the enhancement to that dispersion via the "line array effect".

All these comments are relating to the speaker "without" CDWG.  If you use the CDWG then the directivity and dispersion charachter of the tweeter is enhanced even further.

So I think you can put away the jackhammers and cement blocks

A few quick adjustments to the L-Pads or the D-OXO and you should be just fine.

[John Casler]

Hummmmmmmm! #2 Will you make matching risers available to raise the height of the VLA's for those of us who are handicraft handicaped? (With all Dave's talents you could always farm out the production to him if you didn't want to bother yourself) 

Paul

That is what the new SUPERTOWER Subs are for

[John Casler]

Ah, but the Satin or Gloss Black will work on the bottom of any finish and look spectacular.

And the bases of the standard VLAs, which are satin black, could be extended to be at the same height also.  Now see what you have done!  Here I am thinking crazy thoughts when I am already busy redesigning my room treatments .

http://www.audiocircle.com/index.php?topic=69957.0

Thats the thing about Brian.  You won't find him sitting on his hands (except maybe at a Green Bay Packers Football game) and there is absolutely no moss grwoing under his feet.

He is always looking to move things up a notch, (or 50 notches) when he can.

[John Casler]

Brian Cheney Signature Edition RM v60
I think this will likely be the system for CES/THE SHOW this year and maybe in a TRINAURAL set up (but that is not in stone)

I would think a Trinaural set-up in a Live vs Recorded demo would be very difficult and present even more challenges, considering the singer(s) would need to be about where the center speaker would be sitting.  I suppose that speaker could be on low casters of some sort tied to a neatly bound umbilical of speaker cables allowing it to be moved in and out easily.

The TriNaural can be used with three different speaker configs.

1) The suggested set up which is a standard ITU semi-circle which would not affect the singer, but would mean that the Piano might require adjustment

2) A Straight line set up which would put the CENTER behind the Singer

3) An Advanced CENTER which would not work well due to your observances, but also would not sound as good as the other two options, puting the burden on the CENTER.

The advantages of using the TriNaural are:

1) Greater sound distribution over the audience which SHOULD lead to a more LIVE sound

2) More cohesive and realistic soundstage for a greater number of seats

3) Ability to achive higher SPL's distributed over 3 speakers which is in such a large room always a limitation.

BUT.  . .

They certainly would be more logistically and sonically challenging.

As I said, the TriNaural is just under consideration.  Maybe B will think the BCSE and maybe a pair of the SUPERTOWER SUBs a great enough improvement.

[PLMONROE]

How would placing this second bass unit on TOP of the RM-V60 (which would ease placement) effect the sound? Also this would not raise the tweeter height. Good idea? Bad idea? Just an idea? 

Paul

[John Casler]

How would placing this second bass unit on TOP of the RM-V60 (which would ease placement) effect the sound? Also this would not raise the tweeter height. Good idea? Bad idea? Just an idea? 

Paul

Hi Paul,

Again "great minds". . . . .

I also considered that possibility and only B could answer that accurately, but adding the second bass module directly to the first creates an "array".

Most are familiar with "line arrays" and some even understand the psychoacoustic physics that the array will generate.

However one of the most significant properties is that an "array" or group of "like" drivers in close enough proximity to each other and in a "like" frequency range and physical spacing that will not cause negative interaction cancellations, (comb filtering) will "improve" the performance overall.  This is due to the fact that they tend to "act" more like a larger single driver.

My thought is that spacing those frequencies (you can get by better with much lower frequencies as in the RM40) may cause a reduced performance over the "array" effect.

But as in all matters of this type, B, would be able to advise from a far greater understanding of the physics involved and I defer to him.

Also, As I mentioned earlier, raising the tweeter will not likely cause any problems at all.  Some may even think it an improvement.

[Brian Cheney]

I would not try to balance a second base on top of the V60 wing.  JC is correct about the "array effect" of placing the second base on top of the first.

Raising the tweeter has proven to be beneficial.

[PLMONROE]

Ohkkkkkkkkkaaaay! I knew that (sure) It's a good thing we have someone like Brian around to design speakers and not me.

Paul