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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Thanks for the comments Romy. Would appreciate pointing out where the schematic is for the 7788 phono preamp or even better your friend´s 7788 mic preamp schematic. I can use the phono stage circuit minus the RIAA as a starter and th...
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Come on, Thomas, no one talks about the 75-85db of gain at MM level. However, the higher gain does has some things that I find is very useful and I find it is much worth to burn extra 15dB in prams then to have a preamp wide open and run photo at low...
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I dont want to hack this thread into TH, I tried them with sub-amps 150 watts and they didnt sound good, but I was using a passive preamp, when I added an active preamp things started to get better, now with 12 watts and a a lot of gain, bass is ama...
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[quote user="jessie.dazzle"] "Short the ML2’s inputs and the hiss should be gone"
I assume it is not a mistake, and that you mean short the unused input on each POWER AMP (as opposed to the PREAMP).
(I am currently using the XLR connections becau...
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Roman,[quote user="Romy the Cat"]May I ask you, this realization of yours… dose it has any “sound”. [/quote]The one we have build which is a little different (6S45 not C3g, also tried WE 417A, 437A, TX-101 Copper not silver, AN UK Line Output Transfo...
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[quote user="Antonio J."] If the Melquiades can do that right then it would be the most impressive piece of electronics I might listen to. If a single preamp could do it with any "average" power amp then my life would be much easier, ha ha ha. I don'...
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The answer will be a complicated one, as the preamp is driving an active crossover. The many storage elements means the impedance is a function of frequency. There is no "10k ohms" answer. I hope you are driving these network with s...
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"As for the preamp, realistically 70db is a very large dynamic shift for most music as you note. A preamp that could do 70db perfectly would be much superior IMO to one that did 90db in mediocre fashion."Bingo! And therein lies the problem with digit...
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I am in the process of setting up a DAW to record fm broadcast. Recently I installed a M-Audio 2496 DAC in a computer to do the recording. I am using a Yamaha T-85 tuner. Prior to routing the i.c. cables through the DAC I had no background noise f...
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Jessie, this is a whole idea: do not get a signal into the ML2. It is NOT an operations sate but juts immediate testing. Do NOT short the ML2 input when preamp is connected to ML2 XLR inputs. By shorting the amp’s inputs you hear the inner-noise of t...
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That is truly great and IO would like to express one more time my esteem to active Placette preamp.
I play with 3 tuners and multiple stereo decoder options trying to gig out the minute differences and aspect of sound of those units. It is a pure an...
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Hi Romy,I was wondering if you put in any other preamps while your placette was away for mods? I decided to take mine out of my system temporarily (just to mimic you 8-) ), and put back in an old custom made tube preamp. Well it is very interesting...
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Are you sure the remodeling didn't do it? I assume you mean you moved it back into the remodeled room.One time some years ago I was in a recording studio and wanted to use my Millenia mic preamp into the ADC. So I asked them to turn off the mixing bo...
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PartsConnexion has has PurePower 2000 and 3000 units on sale 35% and 32% off:http://www.partsconnexion.com/fin_prod_purepower2000.html?utm_source=getresponse&utm_medium=email&utm_campaign=1express&utm_content=pcX%E2%80%99s+BIGGEST+Promoti...
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Alrhough the phasure stuff does sound very good, I do not consider it to be “the bleeding edge”. I consider a preamp allergy to be very typical of those “making a point” for instance! Declaring that only 0.6V sounds good on the DAC demonstrates yet m...
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building a preamp based in the same tube you're using on the Melquiades and results aren't what you expected. Have you?I wish I knew how to do it, I'd love receiving a compilation of your favourite music. Anyway, why do you think you'll get better re...
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Paul McGowan is a regular poster on youtube. I have to take his presentations with a grain of salt as they always conform to sales pitch for PS Audio products, but they are interesting. Recently, he asserts that tubes in preamp stage will provide h...
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My playback is disarray and distraction for weeks. My preamp is being rebuilt by Guy Hammel and without it my playback feels like a playground of WWIII. Nothing could be connected; nothing can drive anything – sucks in other words. But is it coming,...
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My sub-bass amp is back but I am not sure if I am comfortable with it. The guy from QAudio did a wonderful job to fix my modified B-2 power amp and now I have my amp for ULF with passive line level filter in it. So, Now I have two identical, fully fu...
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I thought about this for many years... but, to make the story short:I agree with that idea for Loudspeaker manufactures, this makes a bit sense, but even here you will have experiences, which will make you die 10 years earlier.Avant-Garde for example...
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Let's see if this design of him will get such an enormous feedback on diyaudio as his BlowJob preamp (no idea on the sonics of both though,never heard them)...
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[quote user="Romy the Cat"]
Anyhow, here is what I think I would do if I use the Alnic’s Preamp. Get rich the 7721 and 7788 and to put in there my 6E6P-DR in triode mode. The tube has very same pins and a full equivalent. Increase the plate voltag...
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When you use more than one set of outputs in a pream many BAD
preams will die, but this is also would be depending of the power amps’ input impedance.
If two sets of long interconnects caused
sound degradation then it was not bad preamp but VERY ...
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[quote user="KOTriode"]Romy, in the contrary, it is very unfair to compare my 845 amp with the 6C33C. The main reason is the 845 amp used the best output/interstage transformer available, while the 6C33C's output xformer is pretty good but far from b...
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Regarding L1 and L2 outputs and bi-amping:
Romy wrote:"...The unfortunate part is that if you still intend to run a dedicated cable to your let say LF section and if you use Lamm preamp then you can’t... his preamps (L1 and L2, I do not know h...
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[quote user="Romy the Cat"] The idea was very simple: to convert the C filter into RC filter, to employ the Silicon Carbide Schottky rectification diodes that showed themselves so nice in 6-ch Melquiades and to beef up the preamp with large bet...
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Since I was wondering at Soundstage site I come across Marc Mickelson review of Einstein preamp.
http://www.soundstage.com/revequip/einstein_the_tube.htm
I am not familiar with this unit and but there was in there something that “attracted” me in t...
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An Audio Amplifier Design Philosophy
By David Berning ( Courtesy Meta-Gizmo.com )
I became interested in audio at a very young age because I liked music, but was too uncoordinated to be able to p...
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[quote user="Romy the Cat"]Again, it was very interesting, but… Let agree that methodologically you did not try Placette as it performance was masked out by you need to use your Neurochrome buffer to get gain. Your chain will sound as the worst eleme...
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[quote user="N-set"]
Hi Anthony,
trying to copy a known good solution - too little time for experiments recently.[/quote]Well, Romy had great results with the Placette and his Dannoys, so that is the known good solution as far as I am con...
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