Audio note capacitors review12/11/2023 ![]() If I ever get rid of them, I’m sure I’ll regret it even more than the QUADs. The Audio Note Es that sit in the corners of my room are there to stay I hope. It was in that pursuit that the Audio Note E speakers entered my life. I got off course for a few years and wandered into the land of soundstage and pinpoint imaging, but my love of music brought me back to the original pursuit. I spent a lot of time trying to find a speaker with the strengths of the QUADs and Klipsch, but without their shortcomings. There were many others that came home with me for evaluation, but there’s only one that I wish I had never gotten rid of, the QUAD 57s. ![]() Contemplating the roller coaster again on my new amps.There are a lot of speakers I have liked and owned: Advent, Altec, Celestion, Gershman, Infinity, KEF, Klipsch, Spender, Spica, and Vandersteen. Mundorf needs to run in all their caps at the price they charge. The new owner of the amp keeps calling and texting me to tell me how much better it sounds compared to the same amp with different caps, side by side. The 50 year tech warned me to "get ready for a roller coaster ride" with those caps for at least the first 3-4 months". I swear those darn caps were still settling in after 400+ hours. It took a bit just to find the darn part numbers on the non-oil version. The designer was right, he told me over and over to "go with the non-oil Evo Supremes" in my amp. Guess which ones sounded fuller after 300+ hours of long and painful burn in. I have the Mundorf SGOs in my MHDT Orchid DAC and the Mundorf Evo Supreme Silver Gold (non-oil) caps in my former tube amp. The designer had to beat it into my head a few times for me to believe it. And, I was advised by a 50 year tech and a designer of my amplifier on two things. Hope that compared the bass response of these two caps? It's been too long for me to accurately comment, but I want to guess that they're more tonally similar than different (whereas V-Cap TFTFs and Mundorfs will definitely both shift the tone in different directions). I think whether the Deulunds are worth it or not (vs the Miflexs) will really depend on the depth capabilities of your system's imaging. They're also a little cleaner and more precise in terms of locating instruments in the soundstage. Moving on to the Duelund's probably took out that extra foot, but made the sound more real/natural. Moving up to Mundorf Silver/Gold/Oils added another foot to the depth of the imaging (and also reduced the bass to a level that I couldn't accept until I added in new subwoofer amplifiers that could boost my bass a bit). I didn't know what I was missing, but in comparison, the Miflexs were almost two-dimensional. I really enjoyed the Sach's pre and was feeling content with it, but when I installed the Mundorf Supremes, all of a sudden I had another 2-3 feet of meaningful depth to the imaging. In mine, they sounded good, but removed almost all the front to back layering that my system is capable of. Hi a lot of people seem to love the Miflex's and I'm sure they are great performers in many systems. R in this case is the input impedance of the amplifier. Ideally you want the -3dB point (which is what this formula gives you) to be no more than 2Hz- allowing the preamp to then have no phase shift at 20Hz which will give you neutral bass. Its a bit inconvenient as stated, but if you replace 1,000,000 for the 1, then R will be in ohms, C will be in microfarads and F will be in Hz. There is a timing constant involved (which sounds like you might already know) the formula is F = 1/R x C x 2Pi (This is why we have direct coupled outputs on our preamps- this problem is avoided.) The output section probably the least, but in many cases, the designer is juggling the inductance that a larger capacitor has against the capacitance- and has arrived at a value that has the best compromise between bass bandwidth and coloration. Yes, actually the original reason I started modifying the capacitors wasīecause the miflexs were right on the edge of being too small for myĪmplifier's input impedance.Be careful- just increasing capacitor values can get you into trouble.
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