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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Firts of all apologies for not going through all 49 pages of the thread and asking probably a well known question with a well known answer.I'm slowly gravitating towards that black hole of a "clean power". As a first obvious step I'm thinking of a de...
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[quote user="Romy the Cat"] Sean19 wrote:Both versions of
802's have GPA diaphragms both are used on the same horn in a model 19 clone.
Over longer periods of time the older versions are easier on my ears. You deal with random result. Pretend that ...
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Happy New Year to everybody![quote user="Paul S"]N-Set, how do you plan to convert the 3 phase back to 1 phase? Also, it is likely that the whole house system uses the same ground. [/quote] Paul, each phase to neutral is 230V, so as I understand in...
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I have always thought my old Altec 802's with the concentric ring phase
plug sounded better than my newer 802 G with the Radial phase plug. If i
had to describe the difference i am hearing i would say the concentric
ring style just simply sound...
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I hope this is on-topic.I want to understand more about effect of phase on audio.There is a product, ZVOX, which is alternative to 5.1 surround for home movies. It is stereo system, but it has phase settings (which you can adjust) that make soundstag...
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Well, what I told you that I am a Moron and you did not believe me then you were fools. Here is a case to point. This week I deeded to connect my Holrick mechanical motor-generator in use. I did not mean to listen the sound of it. My objectives were ...
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Well, the third phase is a bitch. If I have a n extra motor then I might try this
http://www.team.net/www/shop-talk/hm3phase.html
but for now I think I will try a regular capacitive static converter with a cap to convert the US st...
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I think that nuances with phases synchronization from multiple channels is the last thing that I need to do in my room. I mend the aspects that were exposed in the few recent posts about the practical binaural nature of sound at HF
http:...
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In context of the recent changes in my playback regarding the electricity and the consequential effects:
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=9252
I have revised and reinstated my interest in the DHT experiment. In addition to a...
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Paul:To build on your thoughts -- I have a sound bar for my TV which manipulates phase so you can pick between the audio seeming to come from a wider source, or from a focused point source. So, for your action movie set it on wide, and for your perio...
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N-set, this might be a case where you can start with the 6E5P without working it so hard and still have enough gain , and correct as you go, because of the diminished frequency range requirements, and because of the third stage. Am I talking heresy ...
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...with your amplifier project in mind, remembering the elegance of rectifying three phases....
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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...
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Well, this is the difficult time, embedding a changing, complex system into a new, large room. I am not clear if the sound has changed over time (since you were more positive about the sound, earlier) or if you have just become more aware of aspects...
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If one is using multiple in phase drivers, they are spread out over space and help reduce resonance by interference. Another possibility would be a B&W like lightweight matrix enclosure to move resonance UP, where it is more easily damped. A thir...
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what do you base "should be" on?My experience shows considerable improvement in the "sweet spot" window when we align properly. Things like sibilants become much more natural. The "improved" uhf makes my hf more effortless. The sense of space seems m...
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[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...
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Dear Romy,OK, some more about the midbass.Well, it was not really a surprise to us that the horn without the phase plug was dissapointing. Without the plug we had a horn that was a bit too short, had too large front cavity and less compression than w...
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Ronnie,
There are no needs to be funny about it and there are no needs to get a daytime job.
A phase tester and RTA analyzer are absolutely obligatory thighs to employ and they are inexpensive and very simple to use. A simplest phase tester you mi...
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[quote user="N-set"] Anotheraxiom was to make it DC coupled so that there is nothing but tubes in the chain.[/quote]Of course I was not very precise here: not pictured but a 1:1+1 phase splitting input transformeris inevitable...still I believe it is...
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My own experiments along these lines suggest that relative motion of the driver itself is a factor, along with attendent augmentation and/or cancellation of certain frequencies, depending on whether the frequencies and/or resonances in question are u...
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Hafler, Carver, polk and most professional mastering has a technique that actually came from MS recording techniques. A MS microphone array has a "mono" microphone and a figure 8 bipole microphone above it. The stereo spread is controlled by altering...
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Well, you did not say it had nothing to do with "space" or "ambience", which are of course at the root of both rear and "scatter" channels, including side and "aimed-away" channels. Side and scatter channels might not require delay; but th...
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Hello Andy,I like your recordings although i am listening on headphones which i normally do not use. My Main setup is not operational right now.They do sound clean, clear and dynamic.Can you let us hear a recording of the live vs playback? This would...
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Something they mustve obviously done better than others using beryllium. Judging the sound. In a positive way. The lower 3 are titanium, but all upper 3 are 4/3/2 inch BE sourced from truextend. The suspensenion however is soft and allows excursion.I...
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Hi Jeff,I am certain that the best midbass was NEVER in a corner horn. Every fold in the horn is a new resonance. Corner horns need many folds...In addition, if you are very "anal retentive" about phase alignment - how do you integrate a corner horn?...
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The back chambers are complete. All primary and secondary elements are glued. The only thing that we did not do for my Sunday, August 12 checkpoint is the final sanding and priming the horns. We decided to do final sanding after the horns are upstair...
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"Meanwhile, I suppose we mostly tend to think of "phase" as a 180 proposition, +/-, either/or." Not I, sir! Phase is a matter of degrees. Polarity is a total flip, which is why it's a far better word for the two conditions under discussion.So let's p...
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[quote user="jessie.dazzle"]I've been listening for about one week now with the filters set so the hand off from lower-mid to upper-mid happens higher up (upper-mid S2 is high-passed at 4800Hz instead of 3200Hz), meaning the small 400Hz horn is doing...
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KOTriode, …no one questions the usefulness of having a regulator and the ability to adjust voltage and current independently. However, it is necessary ONLY during a design phase and sine you have figure out the optimum operation point for a given tub...
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