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Nimrodor

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About Nimrodor

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    Veteran

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  1. Nimrodor

    Will the ALC 1220 handle the beyerdynamic DT 770 PRO 250Ω ?

    I would get the headphones first then decide. The X6 can supply more power than the ALC1220, but its quality is significantly worse than the motherboard codec. ALC1220 Measurements DAC-X6 Measurements
  2. Nimrodor

    Will the ALC 1220 handle the beyerdynamic DT 770 PRO 250Ω ?

    ALC1220 is usually somewhere between 1.5-2Vrms 15-20mA maximum output, based on what few measurements exist online (there is no datasheet available). Assuming 250Ω 100dB/V for the DT770 Pro, that means you should get up to around 105dB SPL peak (or ~90dB average listening level with high dynamic range music) without clipping – as long as you don't listen to music super loudly (anything above these levels would be borderline harmful to long-term hearing TBH), you should be fine. I'll add that my HD650 (300Ω 103dB/V) gets more than loud enough for normal use with an ALC1150, which doesn't have as much output as the ALC1220. I would not get that amplifier. The schematic says they use 47Ω output resistors, which implies that the op-amps they're using for the headphone outputs aren't ideal for headphone use to begin with.
  3. Nimrodor

    Psu went bang

    Probably NTC thermistor inrush current protection. Those tend to produce an exciting bright explosion when they fail, and they also tend to fail on startup.
  4. They sound fine from most modern motherboards. Find a chance to try them out with fancier electronics at some point in the future, but don't sweat it too much.
  5. Nimrodor

    Beyerdynamic DT 990 Pro question

    Onboard is (probably) fine. 2Vrms means they're running a unity gain output stage with the RC4580. Assuming power from the 12V rail, that gives them ~±30mA of output current at full scale output. There's no good data on it running low impedance loads, but tests of other devices using it as an output stage seem to indicate that it's fine as long as you don't push the output current. For the DT990 250Ω with 99dB/V, this 2Vrms peak output (I hate how that works) translates to 105dB SPL peak, so you'd be limited to about 90dB (average) listening levels on high dynamic range music. Output current should be low enough with this load that it does not clip significantly on max output. I would be hesitant to recommend this for low impedance headphones (<64Ω).
  6. Nimrodor

    Need advice on a full audio setup

    Noise cancellation will essentially come down to how close you can get a unidirectional microphone to your mouth. Noise cancelling microphones do exist, but they still depend heavily on your voice being louder than your surroundings. You can share the same microphone if you don't use speakers.
  7. Nimrodor

    Studio headphone question

    Sonarworks (or any conventional equalizer, for that matter) can't correct for headphone distortion (the M20X has significant distortion at low frequencies) or underdamped physical resonances (the M20X has a massive ringing null at 5.5kHz, and many more smaller ringing peaks). The M20X will sound significantly worse than better headphones, even with a good equalizer. Similarly, good headphones EQ'd to have the same frequency response as the M20X will still sound better than the M20X. I am not aware of Sonarworks having physical phase correction.
  8. Nimrodor

    dac to pair with the THX AAA™ 789 LINEAR AMPLIFIER.

    The caveat is that running single ended stages in parallel doubles power by doubling current, and reduces noise levels by 3dB, while balanced/differential doubles power by doubling voltage, and increases noise levels by 3dB. In both cases signal-to-noise ratio improves by 3dB, but with a final amplifier output noise level is more important than the on-paper SNR since the listening (reference) level is held constant.
  9. Nimrodor

    dac to pair with the THX AAA™ 789 LINEAR AMPLIFIER.

    The post confuses balanced connections and differential signaling. As long as the impedances of both lines are equal, common mode noise rejection will happen, whether or not one of the lines is "ground". Not that common mode noise is much of a problem in practice anyways unless you're running multiple cables with different signals bundled together. As for ground loops – well, headphones can't get ground loops, and headphones are inherently balanced. Benchmark has a much better explanation, even if they too mess up some of the terminology. For the most part, it boils down to "balanced interconnects have a higher SNR not so much due to noise reduction (noise levels are 3dB higher in truly differential outputs!) but mostly because differential signalling doubles the signal level without requiring higher rail voltages". There is no advantage to a balanced headphone amplifier except in some niche cases like a differential tube amp where even-order distortion cancellation may occur, or in cases where additional drive voltage is needed (but at that point get a better single-ended amplifier).
  10. Nimrodor

    Hyper X cloud 2 no sound out of right ear

    It's almost 100% the cable if fidgeting with it made it work again. The "easiest" repair is most likely to remove the current cable and route a new one through the cable opening, soldering the wires to the appropriate pads as described in this mod. If you have the parts you may instead want to attempt a removable cable mod to prevent this sort of failure from happening again.
  11. Nimrodor

    HyperX Cloud Alpha + 7.1 HyperX Amp

    I'd say no. If you're talking about the HyperX USB dongle, you're essentially swapping your cheap Realtek codec for a cheap Cmedia (most likely) codec. Here's a comparison of some specs. All ratings are for the integrated headphone amplifier into a 32Ω load, at 48kHz sample frequency. ALC892 CM6533 CM6571 Full Scale Output 1.1 Vrms 0.99 Vrms 0.82 Vrms -60dB Dynamic Range 93 dB (A) 92 dB (A) 92 dB (A) -3dB THD+N* -75 dB FS -71 dB -82 dB (A) Crosstalk -80 dB -60 dB -72 dB Output Impedance 2 Ω 32 Ω ? 20kHz Response -0.05 dB -0.95 dB -0.94 dB *THD+N numbers are not directly comparable due to different weightings and references. For the most part, USB dongles are a sidegrade to entry-level desktop motherboard audio.
  12. Music and voice and pretty easy to make out too. Human hearing works off spectral integration, so as long the noise is uncorrelated it's not difficult to hear a signal.
  13. Nimrodor

    New headset have sharp sound when the letter S is heard

    Like most headphones with ringing, some people love them because they inject fake detail ("Wow, I never noticed how much sparkle this track had before!"). Grados, HD700, some Hifimans, most flavor-of-the-month Chinese closed-backs have the same issue. Takstar Pro 80 is a good choice if you like its sound signature. It responds poorly to EQ. Same deal with the HyperX Clouds; Kingston changed very little. The damping scheme is identical.
  14. Nimrodor

    New headset have sharp sound when the letter S is heard

    Not happening with the HyperX Clouds. At sibilant frequencies the phase response is so wonky that there's a dip in the absolute amplitude charts that masks a long-lived ringing resonance in the time domain. Lowering the higher frequency peak attenuates all the nearby non-problematic frequencies while not solving the real problem. Similarly, boosting the trough on the amplitude chart doesn't boost those frequencies appreciably in the physical response since there's a near-perfect phase cancellation there. It does manage to make the ringing at the harmonics even worse. Yep. Sibilance is often due to a high-Q resonance in the headphones, which can't be fixed effectively using conventional amplitude-based EQ. Damping the resonance physically is the only "simple" way to effectively fix the problem. Add damping, reducing the efficiency of the headphones, then amplify them back to normal levels and try to fix the new lower Q resonances with EQ. It's a lot easier said than done – toilet paper is far from a cure-all! Here's a good teardown with some modding ideas for the Takstar Pro 80, which the Clouds are based on. Honestly, I'd recommend that OP sell the HyperX Clouds if he's sensitive to sibilance. There's no easy physical mod that improves the treble appreciably without ruining other aspects of their sound. It usually takes a good amount of time-consuming tuning to get a mod to sound better than the original headphone.
  15. In practice, yeah, it's hard to think of a "normal" music file that would benefit from more than 16 bits of resolution. But purely talking "bits" of resolution, humans can hear signals well below the noise floor, so it's a difficult argument to make based on SNR alone. At normal listening levels in my current environment I can reliably make out a 1kHz tone 36dBrms below white noise (I could probably go further with more practice and a quieter setup but that's enough to make the point). Since well-designed electronics should be dominated by thermal noise, this implies that with enough amplification even a 21 bit ENOB DAC would be able to produce audible tones beyond 24 bits. Not that it matters in practice. Normal people don't listen to music loud enough in an environment quiet enough for this to be audible.
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