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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="dazzdax"]Romy, are you sure the unborn fetus is exposed to sounds in the 200-400 Hz range? I think it's more of 30-200 Hz (conducted sounds of mother's heartbeat and footsteps). I think babies are also sensitive to these range of sound: ...
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It might not be directly related to the subject of this thread but I would like to pass this comment. Over the years of observing the better and worst in upper bass I come to an observation that the front loaded horns with dampened cones might not be...
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Great! Please let me know when you are ready to unveil it. In the meantime, is there something I could start working on? Can you pass me transformer parameters? What about tubes and sockets? Caps?
Thank you....
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Having made my last comment based on what I 'heard' via my laptop speakers, I took the clip to the workshop monitors last night to have a further listen - not to examine the weird processing, but to come to a refreshed idea of what kind of sound...
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Hi Paul,Could you help me understand what you mean?Are you saying that even without a high-pass filter, a <8" driver has an imbalance of 'harmonic development' above and below 150Hz... and that this is not the case above and below 400Hz?If we ...
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Not to go overboard after only 2 days of operation, but the Bent TAP (transformer-attenuator [passive] pre-amp) is a pip in my system. It is as "neutral" as anything I am familiar with, compared to by-pass (with CD). I love havi...
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I'm sorry, I thought I mentioned that I was responding to the earlier post about HF, up the thread. I guess I misunderstood from other reading that you much preferred your crossovers at line level, while I was proposing it a...
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This is probably the reason I can listen to EV Patrician IV in relatively small space and close to the speaker without much of fatigue. The other factor must be that it's 4- way design with narrow band-pass for each horn. EV T25 2" phenolic com...
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Oops... Ok, I admit it, I was up all night with an Excel-based profile generator.I wrote :"...I will pass on carbon purely out of financial considerations... At 40€/m X 100m, we are into the sort of cash that I'd rather put toward real...
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Celsius, I think you do not take in your equation the input voltage. If you bias 6E5P with 4.1V then it can pass 4V with no feedback. Since the tube has under normal circumstances 33 times gain then you have 132V RMS from your driver stage, wish is ...
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[quote user="Romy the Cat"]Celsius, I think you do not take in your equation the input voltage. If you bias 6E5P with 4.1V then it can pass 4V with no feedback. Since the tube has under normal circumstances 33 times gain then you have 132V RMS from ...
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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...
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Here is the list of the thing to do with Vitavox S2 in order to use it in 4-ways installations. The S2 must not be used in 2, 3 ways systems. It possible to do with S2 whatever you wish but pretty much any other way to utilize them produces some very...
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This subject of digital crossovers became quite popular during last few years and many audio-people give up and go for a simplicity and painlessness of digital crossovering. There is an army of people out there who would swear by a complete transpare...
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[quote user="Marc HENRY"]La Grande Castine will not be as expensive as Cessaro Gamma.
i am sorry but i cannot answer to all questions, for several reasons you can understand.we have tested many drivers since the early prototype of La Grande Ca...
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I did not make my mind about it but I have some “concerns”. Using SS amps and hearing different SS amps I do not like their bass and the notion of a powerful enough DSET to be able to drive ULF in A1 was born. Sounds logical. However, recently I ...
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[quote user="Gregm"]"ASR do not use the regular ICs but the ICs that they removed form the demilitarized Russian nuclear missiles console and fallen Chinese satellites" ...which means that they use cheap, used ICs. So, the dealer has a better m...
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In context of my resent observation and my desire to get more softness from my lower bass:
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=15814
I spoke last night with a friend of mind who pitched me very interesting idea. I told him th...
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[quote user="Romy the Cat"]
twogoodears wrote:I'm following with interest the thread and must say that I'm baffled: Goto's "instructions" are - SIMPLY said - a mix between non-existent and wrong... I love what Goto's did in my system... BUT I thi...
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[quote user="msaudio"]Putting The Mid Bass horns behind your head will not work. This thread was about Mid Bass Horns Project, do you thank you will be able to use any frequency above 80 cycles with rear fired horns that are behind your head? Tha...
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[quote user="speedysteve"]I have found
that 8th order X/O works best with them and I cross at 90Hz these days.
4th order is ok but you get minor colourations and some bleed through
that just aren't a distraction on 8th order. The bass horn takes ...
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Jessie, 45Hz horn with 6”-7” throat around AK151 driver is from my perspective is the best thing might be theoretically built around a cone driver. I really envy of you and if I had room I would unquestionably go for it; this is why I keep a pair of ...
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I do not think so. There is no such a sing as optimal generic DSET but there is a concept of optimal DSET for a given situation. So what I think would be nice if some kind of company come up with a Reconfigurable DSET . The Reconfigurable DSET, or RD...
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[quote user="Wojtek"]It should not be a problem for you to borrow one of those plastic 150-200 Hz horns for your REPS .[/quote]I heard it a couple of times in a different settings several years ago. Although I was interested in the application ...
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[quote user="Bud"]These are sensationaly deep recordings, just as you said they would be. DYNAMICS from a distance, and no artificially sick or flat notes, or hidden masses of groaning monsters.Romy you need to help this man, put his recordings on yo...
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In my bathroom there is two type of literature: toilet reading and bath reading. The toilet reading is mostly audio publications about equipment. While I am on toilet then good 4 pagers review about some kind of flagman speaker or amplifies take me...
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Romy:Going back, you said:"Vitavox S2 does OK up to 12.5K ("strong, clean and in character") on it’s center but I never use this driver pointed directly to me but rather at good 20 degree off. (I hardly can tolerate any compression driver point direc...
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It is good, very good. Actually I did not expect that it would be so easy and some resentful at the same time. I was running the new horn, juts single horn, listing it here and there, trying to get a precise high-pass crossover point. The 18.5uF turn...
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Thanks for your help Romy. Have a look at this (barely legible) sketch so we have a common reference:This is Channel B First Stage bias circuit. All is identical to your published schematic apart from R9 which I had to increase to get the other sta...
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This is very interesting, Anthony. I do think that absolute polarity has own role to play. Also, do check the DC that might be sent out of your preamps, certainly with Placette and with your 10Y before the transformer. Chas it with disconnected Milq ...
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