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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Taming strange fullrange drivers is fun, doesn't cost an arm and a leg and there is always room for a second, third, etc. system. E.g. what to do with such a ridiculous unit? http://www.ciare.com/pdf/catalogo/HX135.PDFBack-loading? No problem when th...
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Well, ultimately dropping the signal driving level to the 2A3 is the best approach for reasons already noted. If you can get a closer idea to how much you really need to drop, the simplest approach is having a custom IT wound with the correct r...
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I bought those tweeters for Be Yamamura (second hand from Paul at Wembly Loudspeakers, in London) I also took Be to Heathrow Airport to take a plane to Brazil to install one of his truly superb VT4c stereo amps! It was the morning of a great wind ...
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Hi Romy. Have you tried a large cone high efficiency tweeter? I have used a Saba 4 inch diameter 'green cone' 99 dB/w without a horn and found it to be interesting. Have you tried some kind of horn loading with such a tweeter? Steve...
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[quote user="Jeffrey Jackson"] Ming would like to provide this custom basshorn service to his customers in the US market.. Goto Japan has nothing to do with this... [/quote]
Very cool, the more “hornier” the better as far as I concern.
[quote user...
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I find the fascination of boutique parts amusing. In the case of vintage tubes, using them is a guarantee that one day you will never be able to replace them. In my world, I want to optimize with „sensible“ parts, maybe even stockpile some extra tube...
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amplifier should not clip before loading the room by speaker , this is the minimum power we need.I think 92db needs over 60w for medium size rooms....
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Are you absolutely sure that the headshell mass loading you use has not had an effect on the life of this cartridge?I have my reasons for asking but the explanation is too convoluted to write at this moment!...
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Hi Romy,did you experiment with either primary or secondary SUT loading using your various carts? If so would you mind to share any of your findings?Thanks,AxelPS: Not sure if you have any 'knowledge tree' info about MM carts, or are you still of you...
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Uni,There is a Bruckner Motet in that stained glass I posted. You will have to turn off the amplifiers to hear it. Listen to the space with that glass in it. Don't you hear the Bruckner's contrapuntal modes loading the room? You don't need a sound to...
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Since I know about a few ongoing attempts out there by different people to build Melquiades I would like to share with some of my observations regarding corrections, simplification and possible modifications of Melquiades amplifier.
Obviously you ha...
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So it basically remains a hard-wired, series drive line, and also powered like a discrete monoblock amp? Do you mean to treat it like a single-stage channel?What are benefits of hard-wired mutual (one pot) source for tetrode and DHT filament/cathode...
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Interesting. with sealed 280 sq feet and 8 drivers per side along a long wall you very much migh be able to use a singe 6C33C. With proper loading, good trasformer, DSET and these drivers you should be able to get bass that I doubt you will be able t...
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Romy, I'm of course familar with your MF design and Jim's 6E5P curves is what I base my considerations on at this moment (along with the corresponding Spice model).Your DHT MF is quite self-balancing due to the large cathode resistor. WhatI have in m...
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To use a Class D amp on those SG-146LD GOTO drivers? Is it what GOTO proposes? Hm, I do not know, the more I learn about them the more question I their sanity. The SG-146LD does not adjustable resonance frequency. It means that in whatever horn i...
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Ric, I will not be using sand for decoupling. In fact I fill that sand is not good load bearing decoupler as I will have more or less point loading and sand will not work. I will be using sand for damping the horn surface, primary atop of the horn. A...
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Just looked at the linked picture. Obvious "problems" are varying/variable driver loading and interaction in the "acoustic environment" inside the box and inside the "horn". Like the bumble bee, this "should not fly", for many "fundamental" reasons...
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[quote user="Kcct82"] Bridging the 200-400hz gap3) Bridging the perceived "speed" difference between 11" cone midbass driver and 2" diaphragm Goto driver…..[/quote]I do not know how you drive the things but if you have spare power at the amp the driv...
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Hi Romy Thanks for your reply.I am in the market for either a new pre-amp or phono and line stage.I know they need around 47k for optimal loading, but what else might I be concerned with.Did you have a look on Agon ...
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hehe following your advice loading the Vitavox into small horn... you'll slowly get like the Vox Olympian :)Now some compromises for the usual domestic customer, and you can understand how Kevin got his concept in the first place ...
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Paul,Well if we are trying to *load* the room, to make the space we inhabit come alive to the gods of music then we have to either get the phase mostly right or overcome it with sheer force which is... um... kinda loud. Phase cancellations klll the r...
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I would like to pass some summarizing observations and some generalizations regarding the entire “Water Drop” project.
THE IDEA
The idea of trying to find a tweeter to compliment Macondo was a good idea. Many of you know that I was proudly declari...
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First off, I forgot to mention an interesting observation: Before running the sweeps (previous post), since the drivers in the upper-bass horns are new, I decided to verify/optimize rear chamber volume (they are easily adjustable)... I wasn't expecti...
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After I spend so much time in experiments with ports, I found some interestind aspects in port loading. Our primary objective is to eliminate the nasty air resonances in port at middle frequencies, which kill all the lower midrange sound. It is achie...
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With near 1R impedance I
presume you will have multiple bass drivers paralleled. That is perfectly
legitimate way to operate but there are a few things you might consider. The mistakes at 1R are more effective then at high impedance.
If you have...
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[quote user="be"] The best driver I have heard is the TAD 4003.
It does not use the secondary resonance of the suspension, as described by Duke LeJeune above for the TAD 4001-4002, to extend the response towards 20 kHz, but has a natural roll off fr...
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First of all: I have moved this thread into the Milq Forum…..
[quote user="RonyWeissman"] I'm going to try and build a Melquiades type amplifier (with some help from friends) following the advice given above to make it as simple as possible.&n...
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Well, spent a few more hours to listening Avicenna. Although it has much better sound then from the wall but there are a lot of moments in this sound that I do not like. It is kind of freakish and demoralizing as Avicenna feeds system with absolutely...
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T, although I am not in disagreement with what you suggest but I have to admit that your expectation of user applications dose not make sense to me. I’m taking the use of a transformer in a system and getting a result out of it instead of building a ...
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[quote user="Dominic"]I'd put your sub horns above your head. There are some big issues with that but you save a lot on concrete engineering, and assuming space remains in future you could apply what you learned from the overhead wood horns to a more...
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