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thicc_boi

Member
  • Content Count

    4,183
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About thicc_boi

  • Title
    Wannabe Audiophile & crazy chemist
  • Birthday 1869-06-07

Profile Information

  • Gender
    Male
  • Location
    Czech Rektpublic

System

  • CPU
    Ryzen 5 1600 @ 3.9GHz 1.3625V LLC5 flatline
  • Motherboard
    Strix X370-F
  • RAM
    Corsair LPX 16gig kit, 3266MHz 16-16-16-35 1.375V
  • GPU
    Strix GTX 1060 OC 6GB
  • Case
    Phanteks P400S TG
  • Storage
    120SSD + 1TB HDD
  • PSU
    RM650x
  • Cooling
    NH-U12S + be quiet case fans
  • Sound
    Sennheiser x Massdrop HD58X + FiiO Q1 MK1

Recent Profile Visitors

5,691 profile views
  1. yep, probably the transistors. I rigged out that amplifier a while ago and i use just the power amp board. It's very clean with great sound and a lot of power, so it was not worth trashing the amp just because of bad tone controls.
  2. It was white noise-ish. The resistors were on the input iirc. Yep, i was also told it was most likely caused by old transistors. The pot itself was logarithmic.
  3. There was never any signal played when i tested the noise. Here are schematics from the Harman amp. I am going off from what i was told caused the hissing issue. The resistors at the base of Q501 are 140K total. The 100K volume pot with it's 4.7K resistor is like 4900 ohms total. Now what? What's the total input impedance ?
  4. What? The official specs list 180mW/300R and 450mW/100R. That is around 6.7Vrms at 100R and over 7Vrms at 300R, 7.3Vrms at 600R. The DT770 is rated for 5Vrms/100mW/107dB SPL If he is pushing them over the limit, not wonder he's got rattling and distortion. Channel balance maybe, Johnson resistor noise? Not a chance. I was repairing a vintage HK 6500 amplifier once. It had a 100K volume pot and fully bipolar preamp w/tone control stage. The more i turned the knob up (and increased the input impedance), the higher the noise output from the preamp was. I have a Magni 2 Uber, fully bipolar headphone amp, and even on low gain with IEMs, the more you turn the amp up, the more noise you get. Yes, but in his case, if he pushes more bass power it's bad since the amp can damage the headphones already. Pushing more frequencies which can easily break stuff is no good Yeah youre probably righy my dac knowledge is old school. Also, i blew up 60W speaker with 70W of music with basically no bass at all.
  5. You can sell it as junk with those faults. The current sensing and startup ciruits are hardcore screwed. I'd say keep it, tuck it into box and put under your bed. When you get soldering stuff maybe in a few years you can fix it to play fine and dandy. In the meantime, you can get one of the cheap Class D amps.
  6. idk who would that for you. If he's a jerk, he can charge a lot. If not, like maybe 80-100 euros
  7. Also, try the iPad Pro commerical. The intro has a lot of bass.
  8. Oxidized switch or just old capacitors, idk. The thing is old and hasnt been serviced.
  9. Take a multimeter and measure it, Here, everyone says 220, but IRL, it's between 238 and 241 measured with my TRMS BM238
  10. You can get yourself different op-amps and improve the sound quality for just a few bucks, here are some useful links. Dont do the trick that makes the amp even louder though, youll blow your head off. https://www.reddit.com/r/headphones/comments/af5sxm/fx_audio_dacx6_op_amp_rolling/
  11. ok. Have you messed with the FX Audio X6 on the inside?
  12. Depends. If you have a DAC (or an onboard card), those will have some noise floor. But your amplifier has also noise floor. If you play full blast from your dac, you can turn the volume knob on your amplifier down, which will minimize the noise coming from the amplifier. That is usually greater than the DAC noise floor, so you want the DAC to be as loud as possible and just control it on the amplifier. The biggest problem with windows volume control is that it cuts the bit depth (which gives the sound amplitude in digital to analog conversion), effectively lowering the quality of the digital files. Imagine that a 16 bit 44Khz file played at 60% will be like 12 or 14 bit, therefore reduced quality. This reduced bit depth introduces the quantization noise. The higher the bit depth, the lower the quant. noise.
  13. You can do it, but it's bad for your case since you have nearly blown your headphones up. Also, its usually preffered to not EQ your headphones and just enjoy them the way they are.
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