|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
Post #1464:
Eu
|
by
N-set
on
2015-11-21
|
|
|
I forgot to mention that I'm in Europe so phase splits is not an issue.All 3 lines I mentioned are connected to a single phase at a dedicated panelright after the power meter. Paul, where is your bleeder connected? Aslo to the neutral at the panel?Ch...
|
|
Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...
|
|
One advantage of the use of a phase plug in a midbass horn is that it will beam less at higher frequenzies than a horn without phase plug. If the phase plug is designed for the specific horn and driver it will help "steer" the HF.
Me and a friend ...
|
|
also the phase you mean is actually reverse amplitude without delay. Which, on a 2 feet distance in HF, has absolutely no audible relevance. Its important in either lows or when operating dipole, as the distance of source in depth is near 0 so that t...
|
|
I did not like the two slit configuration of the phase plug..but the five to one compression ratio produced low distortion,,,but i was not impressed with its bandwidth,,,JBL also used a eight inch speaker assembled to a special phase plug,, You will...
|
|
I think this is the one w/ the ribbon driver . Seems more innovative than contemporary Western Electric approach. That is the planar driver would not require a phase plug ?Western Electric's mid 1930's phase plug passes sound thru narrow slits and ot...
|
|
Regarding L1 and L2 outputs and bi-amping:
Romy wrote:"...The unfortunate part is that if you still intend to run a dedicated cable to your let say LF section and if you use Lamm preamp then you can’t... his preamps (L1 and L2, I do not know h...
|
|
[quote user="noviygera"]
Romy,
I tried non-symmetric crossovers (freq and slopes different for
channels) but had to go back to symmetric because the phase response
sounded very wrong to my ears. I learned that I could get used to a bad
freq...
|
|
Romy,I might have overlooked something on your site but I understand that your ULF amp is driven directly by the preamp line stage. If that is the case, you may want to consider an old technique for integrating subwoofers and drive your ULF amp w...
|
|
Yesterday I finalized everything, made the crossovers permanent,
arranged the cables, check the phases and levels per each channel and officially
declared to my wide that the listening room setting up is over. Then as the kids
went to bed I decide...
|
|
I sat down today to listen what is going on with sound of my dedicated lines. Last night I shot down heating in my house and let the dedicated lines to care 3K heater (1.5K on each phase split) for enter day. So it is not brand new copper anymore...
|
|
Re: the guy from “Enjoy the Music :Nice to finally see this. Romy wrote:"...Do not forget that I have a LOT of mid-upper-bass tool in disposal. I have 6dB extra in my current upper-bass horn and I have high-pas my injection channel at 120Hz…"6dB extr...
|
|
My approach of the Mid/Upper bass horn and design decisions have been pursuant to a specific acoustic performance target first, quality of construction second, and cosmetic appearance of the finished horn the third. (I believe I was clear in a ...
|
|
I once came across this article on Stereo and Phase by JM LeCleach. It has interesting considerations on the subject of imaging:
[i]Quels sont les objectifs de la stéréophonie? - reproduire l'évènement musical ou sonore - recréer l'ambiance sonore ...
|
|
[quote user="amdismal"]The crossovers were fourth order, which is what I use on my horns. Second order, I have found, can give a better blending, but reduced the delicacy and transparency in my system. But it's very complicated, and further exacerb...
|
|
John mentioned phase issues. In the US, a residential service it typically referred to as "single phase 240V". For hi-fi it is well to note that US (and similar) 240 is "split" at the service panel into 2X 120V rails that have 180 degree phase shif...
|
|
[quote user="cv"]Little suggestion should all else fail - you could have a rudimentary phase plug machined that would give you the same (or similar) compression ratio as the original but only one annular exit path. This might preserve the driver char...
|
|
[quote user="oxric"] RF at Ona wrote:Now the same issues and analysis applies to your woofer towers and with the new placement of the towers some of these effects may have become exposed.If these effects are significant than your new wider spaced UL...
|
|
[quote user="msaudio"]When you set in your chair looking and listening 2 your sound system you are trying to create in your mind and your ears the illusion of instruments placement on the stage in front of you, to make it more lifelike and real. So y...
|
|
Angelo, I do not think this site add anything applied to the subject. I personally do not feel that upper bass horns require any phase plugs; quite in contrary they are dreadful for upper bass horns. When a straight horn employed then the horn does n...
|
|
[quote user="N-set"]I didn't make it to the 2nd video before and it's indeed interesting.Esp. how he describes the result of his trick: "addition of HF transforming into more air and resolution in the MF instead of more glow at the top"(around 2:30 a...
|
|
The ECL82 = 6BM8 was used a lot in low-end amps, both push-pull and single-ended. Actually, according to your radio's schematic to which you posted a link, they are not being used "one per channel," rather it is a mono radio (nothing wrong with that...
|
|
[quote user="zako"]THE ONLY COMPANY THAT HAS ADVANCED THE DESIGN OF A MODERN DRIVER IS JBL,,, GOING FROM THE WESTERN ELECTRIC DESIGN TO THE 375,,376...PRO VERSION 2440,,2441... TO the 2450 types..USEING COHERIENT PHASE PLUG DESIGN TOPOLIGY that unit...
|
|
[quote user="Paul S"] As a certified non-expert I wonder about 1st order XO with the tweeter, because of the phase issue. Probably stupid, but I always figured that at 180 degrees you could just switch the wires... Do I remember reading somewhe...
|
|
Here are some of my observations regarding the Wolf von Langa RCA 1428 replica. I long time wondered where mr. von Langa gets his phase correction elements and the diaphragm for his RCA 1428 replica. It's obvious that a niche-manufacturer such as W. ...
|
|
I think we are all agreed that if time alignment and space were not issues, a bass horn would be the way to go.Now, I'm fairly convinced that the overwhelming benefit of horns in this range is the phase response, ie flat group delay vs frequency. Mos...
|
|
John, I am bit puzzled with your response. I do not know what would be a proper material for cone/dome of diaphragm. The source where “tone” is born in compression drivers is absolute mystery to me and I in my holly naiveté believe that no one else k...
|
|
[quote user="Bud"]The sine wave actually looks quite good no hint of saturation, clipping or wave deformity. Only a single trace, rather than a twisted rope. I suspect that when placed under a load much of the "broken" curve will smooth out. I would ...
|
|
[quote user="hagtech"]Ah, think of it this way. Imagine floating the input to your ET step-ups. Don't ground it. Let the primary and phono cartridge float. This is a similar situation but far far more sensitive. It's a m...
|
|
[quote user="zako"]I did not like the two slit configuration of the phase plug..but the five to one compression ratio produced low distortion,,,but i was not impressed with its bandwidth,,,JBL also used a eight inch speaker assembled to a special...
|
|
|
|
|
All context of this site except the Forum's posts
Copyright © Roman Bessnow 2004-2024
All messages within the Site’s Forum Copyright © by
authors of the posts
|
|
Last 24-hours posts: |
0 |
|
 |
|
|
Total human visitors: |
42,827,554 |
|
|
|
|
|
|