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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Romy,I am designing the power supply chassis for the DSET at the moment and hope that you can remember some things about how you managed the grounding.All power supply components up to but not including the filter caps for each power supply will b...
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[quote user="Romy the Cat"] anthony wrote:My transformer
winder has completed the first prototype DSET bass OPT. He was quite
excited when he called me and used the word "phenonomenal" to
describe its performance into a reflective 1R load. At 4H...
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[quote user="Romy the Cat"]
Output transformer. Here is
what the thing become complicated. Of you drive ultra-low impedance with step
down transformer then your secondary turns will decrease. They primary will
have whatever they have for all cas...
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Kodomo, what is your ear height when you are sitting in your listening chair? I guess it is less than 120cm. Perhaps when you finish setting up the horns and remove the wheels effectively lowering them you may be in the position of lowering the twee...
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[quote user="kodomo"]Hello AnthonyYou can see the two main problems being 70hz and 200hz in this graph. 200hz is from the floor bounce of the basshorn. I will add absorbers to the floor. The 70hz peak is from the Tad bass units sidewall reflection. T...
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[quote user="kodomo"]I took the 200hz horn 5 centimeters higher and it really helped with the reflections of 1400 hz jmlc. I found out, every driver needs a bit more space than I assumed. So the system is now about 13 centimeters higher. When I cut t...
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[quote user="Romy the Cat"]
Anthony, the rock located in a middle gives a
great advantage of shortest and symmetric cables.[/quote]But it is only the interconnects to the amplifiers that need to be longer...no others...speaker cables stay as is...a...
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[quote user="Romy the Cat"]If I position Macondo across the room then I would have
great benefit that the equipment rock can go between the speakers with multiple
benefits of this setting. Romy[/quote]Romy, what do you see as the benefits of having...
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I have just started thinking of something like this for midbass/ULF: floor firing one-eigth horn (TuneAudio Anima inspired) with the scanspeak array (in green) attached to the side.There is the obvious problem of time alignment, but I can see no wa...
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...maybe a little earlier they will start to be able to be negotiated with and take directions and play by the rules. If you are lucky they become pliable at about 18 months of age.It is a long time to wait...and then there are the children that fol...
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...like their own music when they can put it on, and they are 4 and 7 years old. Once they were old enough to negotiate with (somewhere around 2yo) they learned very quickly not to touch my stereo gear and the lessons have stuck to this day.I love t...
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[quote user="kodomo"]Great project! I have a similar project going on. Your frame ideas are looking beautiful, however I decided to take a more utilitarian road. I can adjust all my channels in horizontal or vertical axis. I am finishing my crossover...
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[quote user="Romy the Cat"]
Well, acg, I am not wild about your idea of the curved frame,
primary on the reason of esthetics but it is your speaker not mine and you
shall do whatever pleases you. A few mandatory things that I would like to
men...
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[quote user="Romy the Cat"]I sometimes visit an Australian site and familiarize myself
with progress of “acg” who it trying to build Macondo like acoustic system.
http://www.stereo.net.au/forums/index.php/topic/75784-deep-end-diy-my-first-speak...
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Romy, I have seen you mention setting speakers up across the long wall before but never got to the base of your reasoning? Could you please elaborate? Is it to do with the delay of first reflections?...
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[quote user="Romy the Cat"]Output transformer. Here is
what the thing become complicated. Of you drive ultra-low impedance with step
down transformer then your secondary turns will decrease. They primary will
have whatever they have for all case b...
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Hi Romy,So it is time to think about the bass output transformer in my DSET. My bass channel will be 8 x 25W/8565-00 each side set in a sealed box and will cover the frequency range below say 100Hz. These drivers can be wired anywhere between 1R an...
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Yes, I cannot help but regularly make those kinds of observations on audio forums, and if I am honest with myself I used to be one of those taste testing different bits of audio gear and forming an opinion based on my objectives and audio knowledge a...
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There should be an 111dB tap on the Lazy Ribbon, but perhaps you have tried that already. Other than that, perhaps talk to RAAL to see if they can improve the sensitivity a little more with a transformer change (or something else)...it might be quic...
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Looks like you still have the protective shield over the front of the RAAL ribbon in the video. Is the RAAL in use or turned off?...
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I am certainly looking into an integrated solution. The first thing that I need to do is determine a safe distance to keep those 6C33C's from the wood or drivers. I have listened to Tax's fullrange Melquiades once but was not thinking at the time a...
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...because I have never built a big horn such as this. My knowledge is theoretical only. But the way that I understand it is as follows...
[quote user="xandcg"]1 - in a room around 15m x 9m x 5m (675m³) with the horn ...
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[quote user="xandcg"]Many thanks!How do I calculate horn mouth, cycles and length?[/quote]The required full-mouth radius of a circular horn is given when the circumference of the mouth equals the full wavelength of the frequency in question. So give...
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[quote user="xandcg"]Romy,In general thinking, I mean in average, a horn to be used with ALE P160 or GOTO SG-146LD with a mouth of 2.8m x 2m (5.6m²) or 110" x ~79", is appropriated to going down to how many cycle, considering full mouth? What should ...
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[quote user="Murataltuev"]Actually you might get some TS parameters for
Gotos if you find right people to ask. I do not have them but I am sure there is
somebody out there who do. The problem is that those parameters are very much irrelevant
and ...
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So I am currently working towards this concept for my Macondo (see below) and I have just the Upperbass horns left to turn and prep. I am thinking about how to best integrate the DSET with Macondo and have come up with something like this… Perha...
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[quote user="Murataltuev"]Here is frequency response without horn:Here is in my 46Hz horn (green is GOTO, blue is Supravox):[/quote]Perhaps that GOTO hole centred on about 225Hz is to do with using the incorrect throat in the horn? First thing I wou...
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[quote user="Murataltuev"] Paul S wrote:Mura, it sure seems like a good 12" driver would be OK above 300 Hz. So, what's up?
Best regards,
Paul SI'm not sure that it is driver issue. May be 42hz horn equalization is effective only in 70-300 range.R...
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[quote user="Romy the Cat"]
[/quote]It will be a favourite, but you had better hide your foot pedal for starting/stopping the Melquiades....
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[quote user="noviygera"]Thank you for your response. I do find myself in a better position to optimize. Last thing is damping inside the chamber. Are there good rules of thumb on this, just like with volume tuning?thank you. Gera[/quote]...if you had...
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