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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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My current speakers are Edgarhorns with the straight 80hz upper-bass shell. The bass never sounded correct to me. The problems with Edgar's mid-bass are well documented at this site and elsewhere. I tried some simple modifications to the crossover...
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[quote user="Tax"] Your post has had the desired effect and I am doing some more research into Fane Studio 8M, 16 Ohm drivers in a 4 inch throated horn tuned to 115Hz with the intention of crossing it from 70Hz to 500Hz . This may be similar to w...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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One of the most interesting outcomes of the Milq conversion into 6 channels is the impact it had to it MF channel. The tweeter is a separate subject, I still work on it, I know how it will be done but I did not hear the final result. I would li...
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Ulf, are you still around?
I would be interested in an update on this project.. are you listening to this setup a year later?
I have a pair of these same drivers (TAD tm-1201) sitting new in boxes and trying to determine what horn profile, tractr...
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[quote user="noviygera"]
For me personally, midbass is the most important frequency range when it comes to sound reproduction. I believe you will be on the right track to focus on this range because so often it is overlooked and treated with super...
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Ronny, it is funny because I was juts about to carve my further observations about the Sound of my monitors. Last night I was listening Rigoletto by Callas and Gobbi on my monitor. I come to an interesting observation that I would like Monitors...
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Hello guy,
Regarding your question : "...What ratio of diaphragm area to throat area did you arrive at (for the large horn) & how did you choose it?..."
The ratio I used for the 45Hz horn is about 65% of the ø of the diaphragm LESS THE SUSPENS...
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[quote user="serenechaos"]At first I plan to power the thing SET, with a known, existing amp (a triode wired EL84) which I've already built and know the Sound. It is not bad, but a little "warm" sounding (second harmonics, and is low powe...
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Romy's quotes in blue:Daniel J. Plach's quote in green:"...The back chamber mechanism is good. Are you planning to do the same in the midbass horn?..."Yes, it will be similar, but more robust; I have an idea for a locking-type seal, which I would pro...
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[quote user="Romy the Cat"]Tax,
do not go over yourself with “building paranoia”, looking for drivers, horns, boxes and etc. If you are looking for 80Hz to 200Hz range (you will need higher upper knee for AG Dou) then you do not need a bass d...
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[quote user="Romy the Cat"]
...this interesting point has no practical answer. First of all in the case of Rakesh horn what N-Set proposed is not necessary. Those 115Hz Hasqiun-style horns that Rakesh emulates are well dumped with own mass and own ...
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Ok, since you people stop to drop the euphoric saliva around the Goto subject I think it would be worth to outline my interest in Goto. Not only worth but I kind of feel an obligation. I feel that my site surprisingly has become a resource that ...
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It looks like the Cogent boys came up with a new design. It is good that they are keep looking, even thogh they unfortunately are restricted with their desire to stretch the use of their drivers over too wide bandwidth….
The new Cogent setup lo...
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[quote user="ulf"]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.
...
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Luc,
I am not ‘lucfm’ and I hope he will reply to you but I would like to pass some of my observation that you might find useful.
In my past when I discovered Fane Studio 8M I went over a number of 5-8 inches. At that time I used AG’s Trio upperb...
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[quote user="TonyB"] So do your horns have 115Hz flare frequency? (and have the rear chamber tuned for 115Hz as well) [/quote]
They are 35”. Do your math. The back chamber tuned at 115Hz.
[quote user="TonyB"] From the pictures the horns look like t...
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Bruce Edgar room was probably the only rooms at the entire show where form my prospective it was possible to begin to talk about "pure audio", so I will.
Bruce picked and smartly holds at "The Show" a wondefull room, the small room, but fr...
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For sure despite my attitude against computer audio I will rebuild
my dyeing machine. However, in addition to regular critiques that I have toward
to computer audio lately a few more points were added. The social and
economical situation in Boston...
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[quote user="oxric"]
Well Jessie, it looks like your wish has come true. The Vitavox site went live at 9 a.m. this morning. It has very interesting implications for the compression drivers landscape in that it suddenly makes buying a hi...
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The last month during the Munich show some folks from Ascendo
Audio 50" showed a new 50” subwoofer.
https://www.youtube.com/watch?v=jIyUmpz9dII
I am not wild about what I saw, it was WAY undersized enclosure
for the displaced volume a...
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[quote user="Romy the Cat"]The last month during the Munich show some folks from Ascendo
Audio 50" showed a new 50” subwoofer.
https://www.youtube.com/watch?v=jIyUmpz9dII
I am not wild about what I saw, it was WAY undersized enclosure
...
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[quote user="oxric"] My mistake. I should not use the term Lecleach on this site. [/quote]
There is absolutely nothing prohibitive in Lecleach profile, it works very nice for HF but the La profile shall not be used in cases where vertical clea...
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Hello Romy,
My apologies for not getting back to you sooner… Moving to the new place has turned out to be a huge task, but worth it, as this new home actually has a place to work, not to mention a much better selection of recorded music at the local...
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[quote user="Romy the Cat"]
Hm, the Injection channel via Lecleach? The MF via Lecleach? I wonder why people then are complaining about the vertical limitations. Anyhow, closer to the point.
[/quote]My mistake. I should not...
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[quote user="oxric"] Firstly, the costs involved and the real chance that this project might not work make this project statistically a horrible waste of money, time and resources which could be better spent in pursuing other solutions which are ...
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[quote user="ulf"]A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound. The improvement was so clear that A/B testing was not needed. [/quote]
For wha...
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Post #83:
Bias
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by
G
on
2018-04-03
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Hi Romy
I have built a Melq prototype and need some help with the bias.
This is my first tube amp build so my understanding is not great.
All parts values were used as per the 4.4 schematics. Rectifier bridges were built with Infineon SD...
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[quote
user="noviygera"]Also you say: "In reality the driver is the
key"So let me ask for advice on suitable driver(s). This be my next step.
Need I select a size? Or driver with certain spec? For example lets say driver
"x" is good for this rang...
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A visitor sent me email “Imitation is the sincerest form of flattery” with a link to (I presume Australian company http://www.goldstandardaudio.com ) that does this:
A works in development.
2.4m high, ...
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