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  1. DVDdoug

    Main speakers have lower extension than subwoofers

    Note that with MOVIES a subwoofer is REQUIRED to get the "point one" LFE channel. You can configure the bass management in your AVR to keep the regular bass in the regular channels, and then the sub will only get the LFE channel (when it exists)..
  2. DVDdoug

    Surround Sound / Home Cinema Amp with decent phono

    Most phono preamps are better than the records themselves. ;) You may hear some hiss from the preamp, especially when turned-up with headphones. But once the stylus is in the grove, record noise will dominate. Personally, when listening to regular stereo recordings I like using a "hall" or...
  3. DVDdoug

    Ampliefiers, distortion, headroom - help understanding

    It's the peaks that clip. The percentage of rotation with an analog volume control isn't calibrated to anything... Feed a louder signal into the amp and it will clip at a lower setting. Most amplifiers have enough extra gain so can go full volume (or more into distortion) with a slightly...
  4. DVDdoug

    Liquid immersion cooling advances in data centers | the next audio snake oil?

    They've had liquid cooling for CPUs for a LONG time. It seems to be popular with gamers... Maybe related to overclocking?[/B] Or maybe because it's "cool" (unavoidable pun). But it looks like they're still using fans for the radiator. It's probably just not a good economic trade-off with...
  5. DVDdoug

    Zidoo New Dac

    They say "digital" so that's software/firmware. You can variably "blend" left & right easily with analog but creating an "immersive" sound is easier to do digitally... Once you have a DSP processor, just about everything is better and easier with software/firmware. But looking quickly at...
  6. DVDdoug

    What is the Reason For This Driver Design (Large Dust Cap)

    "Dome like"? There's more than one way to do everything and there are trade-offs in speaker design as with anything else. There's rarely "one best solution". The manufacturer will always tout there decisions as "features" or advantages but the performance is what counts.
  7. DVDdoug

    Inherited record players that won't play

    Yes, you need a phono preamp. In the analog days it was built-into the receiver and there was a special phono input. These days not all AVRs & receivers have them. Some newer turntables have a preamp built-in but the "high end" ones are like the old days and they don't come with a cartridge...
  8. DVDdoug

    Amplifier choices

    You ONLY need a DAC for DIGITAL sources like HDMI or S/PDIF from a TV, or DVD/Blu-Ray player, etc. You generally get a LOT more for your money with a receiver or AVR than with an integrated amp or separates. My basic Sony 5.1 channel AVR was only around $300 USD and I'm happy with it. I...
  9. DVDdoug

    Help me choose my amp

    Most amplifiers don't have a "sound" unless you over-drive them into clipping (distortion) or if they have tone controls/EQ. I've never heard distortion from ANYTHING that wasn't broken or overdriven... Except sometimes from viny records... ;) I'd look at the power, features, appearance and...
  10. DVDdoug

    How many of you are satisfied with your space?

    Ha! No, I am not!!! And I never will be satisfied... I've had my speakers in "dance halls" a few times for DJ gigs and they sound much better in a larger space. The natural reverb is wonderful. And there's something about a larger space that makes it more comfortable (for me) to...
  11. DVDdoug

    Can the Android 48khz sample conversion be measured in the form of distortion+noise, has anyone done this?

    I don't know if you can measure the conversion without going through the DAC, and of course there are no "bits" coming out of the DAC. There WILL, of course, be digital differences that you MIGHT be able to measure as "distortion". But it's usually not audible. The best experiment would be a...
  12. DVDdoug

    Foobar2000 & Tidal Static noise on some tracks but not others...

    As it relates to ReplayGain: With the normal default settings ReplayGain reduces the volume of most tracks. That's the only way to volume-match without clipping because many quiet-sounding tracks have 0dB peaks. The louder tracks have to be lowered. If you amplify with the preamp, some...
  13. DVDdoug

    ifi micro iUSB3.0 USB Filter Review

    And the worse measurements were related to grounding and noise getting to the DACs analog circuitry. Probably noise related to the isolated/re-generated power. It seems to have been caused by removing the ground. Sometimes removing one ground eliminates a ground loop problem and eliminates...
  14. DVDdoug

    ifi micro iUSB3.0 USB Filter Review

    Streaming can be a different master or a different mix from your local copy. And most streaming services use lossy compression (but usually it's VERY' GOOD). Or, some streaming services offer lossless high definition (higher resolution than CD) and the HD versions are sometimes from a...
  15. DVDdoug

    What measurements to look at for comparing DAC/Preamp output stage

    I've NEVER heard a difference or defect from a DAC, including the DAC built into my 1st CD player about 40 years ago. (I don't claim to have golden ears but I'm a "picky listener".) Yes, that would be voltage. If a DAC isn't defective it will have flat frequency response over the audio...
  16. DVDdoug

    AVR for music suggestions

    Those aren't characteristics of a DAC. If there's a defect with a DAC it's usually noise (hum, hiss, or whine in the background) but that's also the most likely defect/difference with most electronics unless you overdrive an amp (or something) into clipping/distortion. There could be some EQ...
  17. DVDdoug

    Sanity Check: Can these dinky little wires be a problem?

    It should be fine. They are probably small diameter so they can fit two into one connector.
  18. DVDdoug

    Can I use a single subwoofer with monoblocks?

    Sure. If it has left & right high-level inputs they can both be used.
  19. DVDdoug

    Phase issue

    Strange... The phase (polarity) shouldn't be getting flipped automatically. You should only get wave cancelation if the subs have different polarities, or if the polarity is different from more main speakers at the crossover point where they're both operating together.
  20. DVDdoug

    Fixing inverted polarity of a multi-driver IEM.

    You could do a "clean inversion" easily in Audacity but simulating the interaction between bone conduction would be super complicated and you'd have to know the characteristics. But for monitoring while recording it doesn't have to be "perfect" and it never will be because the playback of...
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