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OOOOMYGOSH These things are incredible. I cannot believe the difference.What was once blurred is now focused. Everything is clearer: voice, instruments even the bass is somehow clearer.
Started this project three weeks ago. Admittedly I procrastinated being unconvinced that 45ft of PVC plumbing could improve my audio experience.
Let me explain.....my listening room, actually my living room with it's 24ft vaulted ceilings and adjacent rooms on both floors and carpeting, was I thought, architecturally sound.
Boy was I wrong. The most noticeable change was the abscence of vertical reflections/reinforcements(not really sure what to call the phenomenon).
Without the roomlens, I noticed that moving my head up and down would coincide with tonal and imagery changes. So the best listening position without the RoomLens was with my head tilted up slightly......No, no I'm not a snooty person...really.
With the RoomLenses, a different story. Look up look down, hardly any changes. There still some which I think is normal.
I do still have an issue with violin instruments. Some selections from Sarah Chang "Sweet Sorrow"(EMI) have imagery problems. Especially the violins, in which the sound seems to dance around from center to off-center left or right. Is this a recording problem? Any ideas on how to fix this?
If you haven't tried DIY RoomLens or think that you don't need it. Try the vertical test. Tilt your head up and down while listening....was there any changes in the imagery?...If so you may benefit from a RoomLens.Thanks to Jon R. for the orginal DIY RoomLens post.
What are these? What do they do? How does one get them?
Playing with the placement of the lenses should help with imaging. As a quick summary, my experience is that the outside lenses - next to your speakers - control width of the image and the central one (two in my case) control depth of image.I started out with the outside ones about 12-15" from the outside front speaker corner with a line from the tweeter to the side wall early reflection point going through the gap between the 2 tubes closest to the speaker corner, then using the tube closest to the speaker as an axis and rotating the unit away from the speaker until I couln't see the tweeter through the crack while standing on the wall side of the unit. That location and angle in relation to the speaker was probably a little further away from the speaker than Argent recommend and it was a workable placement. I've slowly moved them closer to the speakers - about 6" separation between the tube closest to the speaker and that front, outside corner and the furthest tube maybe a little more toed in towards the speaker. You'll know when you get it right, as the soundstage becomes noticeably wider on discs with a wide soundstage.
The central tubes are easier. They're parallel to the rear wall so no angle problems. Just try moving them back and forward and see what happens. Back seems to deepen the soundstage unless you go too far when you lose focus.
Apart from that, yes, they are impressive, aren't they? I'm very glad I build my set.
David Aiken
I can second most of your placement, with one exception. In my case, I've found that the side units worked out better when placed about 15 inches from the corner of the cabinet (in my case, Snell A-IIIi's....so the larger cabinet may or may not explain the added distance.)I've tried using none on the side and two lined up in profile in the centre between the speakers as has been suggested hereabouts. Each time I did find that it narrowed the focus somewhat. But.....eventually I have always returned to the standard one on each side and one in the centre set-up. Have experimented enough now that I tend to leave them set this way and no longer fiddle with them. I have occasionally thought to make another pair and experiment with the double-wing set-up....but I don't really have the room for it.
Another item I've found to be helpful. Although there a couple DIY versions which don't mention it, I have found that making and installing a brace at the top of the tubes to be of benefit. I made my Lenses about a month ago and at first did not bother with a hat as they seemed close enough to spec not to require it (...not to mention I hadn't thought of an acceptable way to make them.) However, I have found that bracing does give slight benefit to focus. Whether this is because they are preventing certain resonances in the naked tubes....or my tubes just happened to fall far enough out of spec without the bracing...I don't know. But I can remove and replace the braces and hear the difference.
.....sT
I remenber the british actor Roger Moore playing the character of the series " The Saint " and his name was Simon Templar. That was a long time ago, about 1966-70. Later the movie came out with Val Kimer as the new Simon .You may consider to do one yourself, just keeding. The RL certainly are a great tweak.Thanks for the feedback.
Thanks for the info. I'll try your suggestions this weekend.
Hi Dave,What differences did you hear from having one lens (central) compared to having a pair in the middle?
Thanks,
Joven
Never tried one in the centre - couldn't fit one there because that's where the equipment rack is. I figured the best compromise in the circumstances was simply to stick one on each side of the rack, as close to the rack as I could make them. Given the standard Argent setup, I thought that symmetry would be important.David Aiken
Hi David,
Yeah, I have a TV in the center. I removed the stand and now it sits on the floor out of the way and below the speakers level. I'm planning on having a pair for the middle also because I have a window in the center that will be blocked if I just put one in the middle.Thanks
Joven
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