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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Well, the LL1627A is very good universal transformer with phenomenal flexibility (properly done - with section not with tabs) to load the output stage. It might be a good choice for a full-range amp at 200mA, though I would still prefer to have a tra...
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[quote user="Romy the Cat"]
Drdna, generally I would not agree that your assessment of the EdgarHorns is correct. There is nothing fundamentally wrong in them that would prevent them to "disappear" in the room. [/quote]Well, this is good news.&nbs...
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Somebody in this there warned me that the fiberglass pipe wall finishing that I employed on the wall with my midbass horn, behind my listening location might be environmentally not healthy. I have very high sensitivity to fiberglass and one singl...
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[quote user="RF at Ona"]Reading about the sensitivity of your system to electrical power supply problems reminds me of the days when I used to make my own equipment as much for the learning experience as for the final result.One of the mundane things...
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[quote user="Chirag"]The 6E5P is an interesting device (I did some research after you dropped the "tetrode" hint and bought a few :-)), but the bias scheme with the OA2's is still incomprehensible to me. [/quote]Ok, I will try to explain.
The...
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[quote user="clarkjohnsen"]Since all audio folks know that the wall gives us highly variable power (voltage being just about the least important aspect), it occurs to me that a way to measure it that includes all the various parameters would be highl...
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[quote user="Lx_"] Another example of cannot-measure-it-but-can-hear-it? [/quote]Oh, yes, there is plenty of it in the audio electricity world. It is not that “cannot-measure”, everything might be measured the problem is that we have no idea wha...
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[quote user="Romy the Cat"]Again, it was very interesting, but… Let agree that methodologically you did not try Placette as it performance was masked out by you need to use your Neurochrome buffer to get gain. Your chain will sound as the worst eleme...
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[quote user="manisandher"]I asked Dave Peck of Avid (formerly Euphonix) a few questions regarding the Model Two (otherwise known as the PMI). The responses he received from Keith Johnson (one of the original designers of the PMI, head of Referenc...
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Had problems 2 and 3 here with my British crossovers
Both speakers have the 78 hz. Dip after a 50 hz. Peak. they are probably room resonances. Try moving the speakers and/ or the mike and remeasure.
Also you ha...
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There are some information about that new Japanese amps in the threads below:
http://www.audiocircle.com/index.php?topic=65312.0
http://www.diyaudio.com/forums/solid-state/37247-any-info-manual-about-yamaha-b-2-a.html
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I never hit such a huge jackpot as I just did with the Lavry DA-924. The most funny in that even that I did it absolutely blindly. I had some minor beef with DA-924 sound: upperbass/lower midrange and the slightly too much extended HF (very very clea...
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Well, there are a few places that can re-charge the drivers, GPA can do it for sure but it is not practical in my view as to remove the drivers from attic horns and to ship them is more pain then to pay to GPA $20 to re-charge them. The re-chargi...
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In the TAS that I bought because the Lamm ML3/LL1 review I found Jim Smith add about a new Engström & Engström Lars amp from Sweden. Jim tells the story about the Engströms and about the 20 Lars’s rules that reportedly assure “good sound”. Th...
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This thread has been pretty interesting overall. I've read most of it and would at least like to provide some feedback on the technical side of designing with the 45 and 2A3 DHTs... at least from my personal experience. A few years back I decid...
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OK, after a few days to straggling with this damn tweeter I might report that the Water Drop actually made itself to sound civilized. It sounded somehow fine alone but it was a real nightmare with Macondo, I juts was not able to integrate it. I measu...
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First of all thanks to all who assist me with this project, including those who did not post here.
Jim, Electraprinted Jack is great guy but he does not believe in exotic cores, very unfortunate because I like to deal with him.
Jessie, you are righ...
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I have drawn up my 20Hz subwoofer horn in Google SketchUp 3D. This horn is more for home theater than for music. My smaller 40Hz loaded with B&C Speakers 8PE21’s is more musical and articulate. The 20Hz tapped horn is loaded with two Tang Ban...
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[quote user="Romy the Cat"]As much as caps in speaker
crossovers makes deference, so do they make in coupling applications. In Milq
the cap is light duty as the amp never goes A2 and the cap is not change the
polarity, still the coupling caps do m...
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[quote user="zako"] All music performed is live,,,and at times localzation is not percieved,,,How is mono haveing practical advantage over propertly implemented stereo???? This argument came up in recording Myron Salvador at the organ and choru...
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I was sit today to do the calibration of my infinite baffle.
I connected my 20Hz 4th order tube crossover with frond-end modified
Yamaha B-2. The RTA did show a very easy gain exactly where should be, the
transition slope doe the magic. I rolled ...
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[quote user="peter foster"] The feature that I find the most useful is being able to select the soundstage characteristics. There is a noticeable difference between the various settings that assist with stereo imaging of players / instruments…....
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[quote user="drdna"] Now I have had the EdgarHorns in my system for a number of weeks and have been moving them around the room and moving things in the room around to make them sound their best. [/quote]
If you are not familiar with horns then it u...
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I very much do not mind to try the biggest Khorn bass
section with my setup. I am trying to figure out how to do it with buying the damn
thing…
I need to say that the best midbass I hear in my life was
from Khorn, well not from Khorn itsel...
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[quote user="pe1mmk"]Well Cat you can call me whatever you like, but you still did not answer my question. Both have a horn for highs, for mids and for lows, only the sub lows are handled differently. [/quote]
I do not think I called you with names...
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Head today to another local audio guy who listen to my new
configuration. The reaction was fascinating. He was asking: what the hell I had
done to midrange? Of course, I did nothing, but the question was very accurate.
A lower mid-range changed ve...
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Looks fine, Anthony. I am not sure what resonance frequency tells
you. Anyhow, a great advantage of your pipe topology for LF is that you will be
able to pile up as many drivers as you need in order to hit the desired
reference DB level. There is...
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[quote user="Romy the Cat"]Guys, I am not looking or care about the design specifics but rather looking for some fresh idea and inspirations that would make me to think further. You see, if I shut down Macondo and measure just ULF channels then I...
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[quote user="anthony"]Can you remember what caps
you used in the HF filter? They are certainly not standard values and I
do have a memory of you trialling air caps. [/quote]
I presume you ask about the F amplifier channel. I use air
caps 530pF...
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[quote
user="anthony"]Romy, I understand that at some stage you trialled a
number of different capacitors and settled upon Electrocube 950B/D not
necessarily for the Melquiades but perhaps for some other project. I was
wondering if you ever expe...
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