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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Andy 1) Actually the most interest was in the fact that I was not asking two questions but one question at the same time as I see both of the questions are inner-related. I was under presumption that in my asking I automaticall...
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Since the new revised Rohde & Schwarz EU-6201 become a leading recoding tuner and since I bound with Lavry A/D, the Lavry prosessor makes a good come back. The competition between Lavry AD122 and Pacific Microsonics never was finalized and I...
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I was waiting someone last night in “Borders” and whale I was waiting I glanced through the current “Absolute Sound Magazine”. There was there a very short article with Prof. Johnson telling about his “new” HRx format. I smell some dead fish in what ...
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Paul,I first got into the geometry of playback after spending some time with John Eargle when he was at Delos. He had a simple microphone setup and demonstrated how to record and playback a 22 meter stage, or 25 or 16. Many of his recordings at Delos...
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So I gave a serious listen to the vinyl source vs. the digital playback to try to get some idea of how much damage the AtoD -> DtoA does. I matched the volume levels as well as I could using my ancient radio shack SPL meter. To me it seems t...
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It of course is hard to say anything about the midrange without hearing the speaker. LF and HF are surely standard yellow cone.It is cold in Germany this time of year. A GM100 amp would be an inefficient but beautiful heater in the 20 square meter ro...
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As all the parts for the full range Melquiades are making their way to meet me,I'm faced with the need for a 12v-5v service power supply (fan , hour meter, LEDs ).How to approach the issue ?1.buy regulated switched (and cheap) power supply and be don...
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couldnt get "insert iamge from gallary" to work so i attached it. Had it working for a couple weeks. Single stage 6e5p testbed. The B+ rcore and output transformer is underneath. In the end r23 of 30k worked with 30h choke. no choke on gas tubes...
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[quote user="Romy the Cat"]fiogf49gjkf0d1) 3) The common mode filter you have at the PS’s input- why do you use them? They do eat some dynamics. As many time I removed them from all imaginary components as many time I witnessed better sound. ...
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Ive tried various configurations but was unable to produce a recording that is similar to the fm transmission, although its not too terrible. I monitor the sound by using the same output of the Sansui that goes into the DAW. Replaying the file, I n...
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[quote user="hagtech"] It's difficult for me to guess exactly what the possible sonic effects of the ripples would be. I see a tube operating at a fixed point, having a particular distortion spectrum. Say -42dB 2nd harmonic. Then, t...
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Ok, I did it a little different this time. At full power levels, the dB meter still showed wideband response. However, looking at the scope I could see distortion in the waveform. So instead, I lowered the input level to -3dB from f...
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hi RomyConfusing description this headphone alikeliness. I heard couple of strong beaming horns and noticed despite the good resolution (equivalent to dampened room) also a very narrow stage. Especially the center usually being like a meter or two cl...
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But Stich firmly believes that EMT is a rubbish and he grounds his believes on some "laws of physics" or something like that ;) The remark of the guy in the original threadthat EMT must be CORRECTLY setup is crucial here. From my experience it seems ...
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Hmmmm. Nset I will tell you something that will disturb you but it is what it is. If you did not use transformers and your phono was noisy and shielding did help it to be not noisy then you do not a proper grounding in your phonstage. The non- shield...
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Mani, Pacific is freaky and it detects HDCD code only at the resolution that it was encoded. If it was coded at 16 bit then it will not read the HDCD at 20 Bit. There is an option in there that set the HDCD detection death… I did not play a lot ...
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The station that I most listen to is 105.9 MHz that broadcasts from one location 50 miles away at 100kW power and that is detected by 2 FM aerials mounted as a parallel array with rotator and ~ 40 feet of coaxial cable to the TU-X1. T...
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I'm strugling with dreaded Mcintosh Mr67 tuner . I borrowed one from a friend and it was very nice ;clear , crisp , dynamic so I went out and bought one for myself . It sounds like a mud and matches 100% of your description of average tube tuner...
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"Indeed for classical work I often find a slightly under damped bass response to be emotionally evocative and of benefit to the illusion of the acoustic"Have you looked at the primary cause of this issue with most SET amps? I can tell you that ...
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[quote user="jessie.dazzle"]A possibly dumb question here: When you and Paul give figures in milliamperes, where are you measuring the current (at what points), or are you extrapolating the figure? [/quote] The 6C33C current is measured in mA. The wa...
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Wise words that mirror my own renewed concerns, Romy.Any recommendations for a particular tester, anyone? The last time I put my hands on a tester to use it was in a drugstore, one of the many places you could find them back in the day when rad...
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Of course you can do it all by ear, and I found that there were times when "my ears disagreed with the meter". As you note, signal strength and "quality" also relate to "mode" (such as Multipath), and not only broadcasts but also tuners vary as to wh...
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Hi! Here is the measured response in 2,5 meter distance living room. 1st order 750. And you can see the roll off after 5k. I know german, so its no problem :) So you have no opinion on the coral crossover from my last post? Only 26 minutes left for b...
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For horns mounted on or near the floor, we have a phantom image below the floor plane. In theory, this means we could make that horn a half circle or similar, with a tremendous advantage in real estate. The theoretical advantages of reduced diffracti...
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[quote user="anthony"]That is what I
meant, an ammeter for the DHT plate current. I don't see that the plate
current is adjustable anywhere in the circuit, and you don't show the meter in
the circuit diagram so I wondered if you actually used one...
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Hi again Domidaw. Your latest results look inconsistent: a 38V drop across 50-ohm R22 would imply 0.76A or 760 mA flowing through R22. If C10 is not leaking any significant DC current then this 760 mA should be the current through R21 and point D. Bu...
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Ok the Macondo is all done in new room, including the bass channel. I am uploading the calibration check sheet not as much for you but rather for me. I have been keeping it got years and constantly am loosing it, now I will know where to find it. BTW...
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Today I listened for the first time to an interesting CD that's been sitting there unopened for some time, namely Mahler 3 by the Koln Phiharmonie, on the new-to-me WDR "label" (Westdeutscher Rundfunk), conducted by Semyon Bychkov. I will get into t...
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It is interesting… I have a very precisely calibrated ¼db resolution AV meter and I decided juts for fan to see what the channels of Super Milq will do in the real life. I kept my Mocondo, along with the woofer towers connected to the Super Milq’s 3 ...
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Romy wrote: "...I still do not know why you have weakness in 80-160Hz octave. Your upperbass shall cover it perfectly fine..."The last time I measured the upper-bass horn, it started tailing off just below the horn's physical cutoff (115Hz); lets see...
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