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KT88

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KT88 last won the day on November 3 2023

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    Cologne, Germany

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  1. Your Khorns look really nice. I see the rollers under the speakers. Are they temporary or should they stay there? The bass could be better if the speakers are on the floor without the wheels after final positioning..
  2. Yes, that's exactly what I mean. The metal tongues should be firmly tightened, not with too much force of course, you do it with your hands and without pliers. If the metal tongues are nice and tight, there will be no micro-vibrations and the sound will be stable. You can try it out by ear whether you plug plus and minus into the connections for the tweeter or for the bass. I have found that it sounds "rounder" if you use the bass terminals. But some manufacturers, such as Tannoy, recommend the tweeter terminals. It's up to your ears. The difference is only very subtle.
  3. I understand that there are separate connections for bi amping. Biwiring should be done by whoever wants, I have not recognized any advantage in 40 years, only disadvantages, you get a pseudo sense of space and sacrifice timing. The most absurd thing is that today there are extra short cable bridges from HF to LF that can cost 300 USD instead of the metal tongues from the factory. The best connection if you do without biamping would be one pair of cables to the crossover, or both internal pairs of cables to one contact point each for HF and LF.
  4. A question about the correct connection of the mains cable. On old devices with transformer power supplies, you can measure the voltage at the housing vs. earth. If I turn the mains plug 180 degrees in Europe, I have a worse sound if the AC voltage between the housing and earth is higher and I have a better sound if I measure a lower voltage. This type of measurement does not work for devices with a switching power supply without a real transformer. The Node is such a device. I have found out which way round the mains plug has to be so that it sounds better to me. I would like to know whether my subjective impression corresponds to the correct recommendation. So my question is, on which side of the two-core Euro cable should the "hot" wire be regarding the Node? Looking from the back, left or right? Or is there a general way to find out the correct polarity of the power cable for switching power supplies, other than by ear?
  5. Do you drive the AMT actively to compensate for the lower efficiency?
  6. Does the AMT1 have to be open at the back @babadono? Or could it also be placed between the bass and the K402 so that it is positioned center center, so to speak, and only protrudes slightly? I have seen 100dB efficiency 1w1/m. So that seems to be enough to hear a difference? A really interesting project. It remains the two-way principle but with a little more "air". Do you hear a change in the spatiality? The staggering of the instruments etc.?
  7. From what I see on Decware's website, the main difference is that the SE84UFO25 uses three separate rectifier tubes, one for each tube in the signal path. The "simple" UFO and UFO2.1 do not have this complexity and they use only one rectifier tube. I wonder if that has anything to do with the hum?
  8. I do not know the H4 so I am just curious. Which freq. region do you address concerning box resonances?
  9. I have a question about this. Let's assume we have a baffle of 2 (high) x1 (wide) meter e.g. We install a 15" driver at the center. In a second baffle of the same size we install an 8" driver in the center. Now, regardless of the fact that the larger driver can move more air (and regardless of influence of a given resonance freq. of the drivers) would the OB with the 8" driver go lower in frequency because its diaphragm is further away from the side ends of the baffle? And therefore the acoustic short circuit occurs later (in the sense of a longer wave length)?
  10. I'm pretty sure they sound good with this setup. they have such a wide dispersion factor...a real 2" driver without a narrowing adapter like some 1,4“ drivers need plus Roy's additional phase plug will be ok with this setup.
  11. Truly an aristocratic sound system! And he has enough spiritual drinks in case his ears need a fine-tuning😀
  12. And not only re metal…Mostly to my ears the original mixes sound the best, also with rock, pop and jazz.
  13. I can only tell you from my own experience with my 1977 LaScala that your current autoformers and coils are worth their weight in gold. Everything else (and Crites does not have the original values of the autoformers) is an audible deterioration. That leaves the capacitors. I have had bad experience with Crits Sonicaps. I don't know what he sells today. But just buy new capacitors from JEM. They will give you the original sound of your Heresy. Please take care of all other components forever and don't replace them.
  14. Is the H1 not the only one with the same squaker drivers and tweeters as LaScala and Khorn at that time? Which must not be a bad thing.
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