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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="Merlin"] I have … yet to hear a bass unit that can provide the low end quality whilst still allowing a first order slope. Unless we are happy to accept copious quantities of 2nd Harmonic of course. I would love to know of one.[/quote]
F...
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[quote user="Antonio J."] Regarding the C2 thing, He said that I misunderstood his proposal, what he says is using five double 200uF+200uF cans (400 uF each cap), which are rated for 500V (not 200 as I misunderstood) to get the 2000uF needed for C2, ...
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1.- Finding specific solutions to specific problems[quote user="drdna"] .... I have high-sensitivity horn loudspeakers and use some 2A3 SET amplifiers, which make very good sounds but I am looking to get closer to the Sound, which to me is feeli...
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[quote user="Romy the Cat"] For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to ac...
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Sine I finished the acoustic room treatment and the final setup of my playback in my new room I got good Sound. There are some minor aspects with which I will be working on – I know exactly what I need to do but they will be minor and incremental...
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Last night I was experimenting with integration of ULF and midbass and was playing relatively loud. The ULF woofers is at second order at 35Hz and the were located outside of my listening room, in the next room with a large wale between then, but...
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In this case something like 5khz to 15khz -- only for the tweeter and only for DELAY. However, if the cellular midrange horns have smooth coverage above 5khz, all the better. But I have no experience with them - maybe they sound good to 8khz....Of co...
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[quote user="rowuk"]I see a problem with any „coaxial“ attempt in one horn. The length of the horn is correct for one band, but not both HF and MF. If the horn is optimized for MF, if is too long for HF and works like a transmission line at those fre...
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[quote user="noviygera"] rowuk wrote:I see a problem with any „coaxial“ attempt in one horn. The length of the horn is correct for one band, but not both HF and MF. If the horn is optimized for MF, if is too long for HF and works like a transmission ...
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Romy, thank you for your thoughts. First off, my further thought on the system and specifically the implementation of the high freq section: Yes, the time alignment would be a challenge but possible. This is the main compromise, in my view but the le...
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[quote user="oxric"] You have often questioned the nature of my relationship with Fane. There is none but as this project comes close to a final conclusion, I would say there have been moments when Fane have been less than helpful. They had never men...
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I'd like to ask if anyone sees and appreciable problem with the following.I'm trying to arrange a 4-way, 3 horns sitting on top of a big bass box. As I have it the 42cm midrange horn (800-8k) is in front of the 95cm lower midrange horn (250-800hz). T...
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[quote
user="kodomo"]I don't think you can align the tapped horn. My tapped
horn has a total length around 5 metres. To time align that with my other drivers,
its got to be around 5 metres closer than others. The only other solution is
delaying t...
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Josh, I am sorry, I
missed from you original post the fact that you delay the back tweeters. It just
looked and it is there, I just did not registered on me…
Yes, the play with delayed
channels is very cook thing. I did play with 10-30ms delay ...
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[quote user="oxric"]Mike duly explained to me that he would not vouch for the work of anyone not qualified and experienced with Vitavox drivers, given both the complexity of the work and the number of parts that go into making these drivers. I as...
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Skushino. Yes TH is designed to play 2 octaves and no more, this derives from the design which actually uses a labrynth, in the shape of a horn, to return (and amplify) the back wave of the driver to the front and add its strenght to the output, no...
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Kerry, from what you have said so far, I am not surprised that you have gone whole-hog digital. I see that yours is an HT system. The first thing anyone here would say is, physically time-align your HF, although I suppose you "could" do that with DEQ...
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Hi Jim ! You wrote about "hysteresis" in the 6C33C curves - it seems to be a very interesting point ! Maybe Romy told you about one fault of this kind of tubes - some old ones have a bad tendency of "thermal breakdown" . I mean positive thermal ...
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AlloWell, I hope I wasn't threadjacking too much; as far as I see it, the best case for digital processors is for messing around with the time domain, not for x/o'g. Ah, so you feel a bit of phase shift at LF is beneficial... interesting. I've a...
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[quote user="jessie.dazzle"]Assuming situation 2 is possible, receiving mid-bass primarily as reflected sound, one would have to take into account the reflected path of that sound, and how it describes the mid-bass part of the image, relative to the ...
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*** I too have thought a while about exactly this... there is something that troubles me deeply though about this approach. I have a theory that too small a cap may not work out as well as one might hope. Now, shall I do a Romy and delay revealing my...
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[quote user="Chirag"] Hey, what kind of crossovering is the DimAmp seeing? Are you sticking to 1st order slopes even with the nasty breakups higher up in the 21W carbon woofer? [/quote]Sure, my 21W has no “nasty breakups higher up”, well it per...
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I have recently acquired a pair of (2000 vintage, I think) Lamm ML2s and would like to share impressions and development strategies with other ML2 owners, including former owners, and perhaps I may learn from any pertinent experience.
In addition to...
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[quote
user="steverino"] If the aim is not to hear the music accurately but
instead to be overwhelmed by it then some kind of sensory overload is the goal.
[/quote]
Steverino, I think that your
question contained the answers. If you get “overw...
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Eli, I do not think that it is PurePower objective to grab your money and to run. They are notorious with delays and it certainly might be unpleasant. With all due respect: 2 month delay is kind of nothing and if the unit does work as it expected th...
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I want to let Paul S know that if he found our QC to be not up to his standards in the past, that he give us a second look. Many of our response timing issues of the past few years were the result of time delays between our Canadian personnel and our...
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HiFi store in the Czech Republic is an excellent, knowledgeable dealer and more than reputable. PurePower did have a 3 week shipping delay in December for the 3000 while we resolved a parts quality problem from a vendor. The engineering delay was exa...
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Keith,
Very good, thanks for the images. It would be very interning to learn what the bandwidth of the horns, the bandwidth of the drivers and the specificity of crossovers you eventually chose to use with each channel. It might take for you for a w...
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A correction: the installation above is not Reinhard’s but by Klaus Speth. Klaus and Reinhard experiment with audio together and Reinhard has his own Goto setup. Here is more information about Klaus’ system with Reinhard’s comments:
Midb...
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I find that one of the most interning and stimulating ideas that you expressed was your experience with your bass horn
[quote user="Reinhard"] Midbass horns: are there are two 20 cycle bass horns which normally have 6,50 m in length and 3,20 i...
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