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Showing content with the highest reputation on 12/20/2018 in all areas

  1. 3 points
  2. I am glad that I have a stand-up desk at work, because I can't help dancing to this... the last song "Hialeah" - rips
    1 point
  3. Got hung up in the aftermath of this today. But it's also a reminder that you don't HAVE to shoot everybody who dares you to do it.
    1 point
  4. You should send us review samples. *wink wink* oh wait, wrong website. ?
    1 point
  5. I'm pretty sure I dismissed it as dork fantasy in 2007. Finishing the first disc of Season 1 and the show's writing has surprised me with its combo of smarts, humor, and sheer entertainment value. And Sarah in her underwear... less surprising with each episode, but much appreciated nonetheless. Something else I noticed recently... when I'm reading Wikipedia entries on older tv shows, a lot of them are starting to mention the soundtracks getting pulled or replaced due to music rights. That's one reason I prefer to watch some things on disc instead of streaming.
    1 point
  6. A CRC filter is something along these lines: In that diyAudio post, both capacitors were 4700uF and the resistor was 4ohm. Have a look e.g. here: http://www.learnabout-electronics.org/PSU/psu12.php for the theory behind it.
    1 point
  7. not now, but last night local boeuf, marinated, seared served on sticky rice, reduction of marinade for dippin sauce, homemade pickles from lemon cucumber sourced from coworkers garden pickings, homemade kimchi on day three of fermentation garnished with freshly toasted sesame seeds, and simple sho chiku bai sake for sipping was oraait
    1 point
  8. FIf you are working with the "new" power supply, the one with opamps, then each opamp compares the reference 12V voltage (supplied by D1 or D2) with the portion of the output voltage from the R8/R7 or R9/R10 voltage divider. If the voltages differ, the opamp drives the pass transistor so that the voltages become equal. With the 511/750 ohm divider, V(out) = 12V * (511+750) / 750 = approx. 21.2V. If you want a lower output voltage, you can reduce the value of the top resistor in each divider (R8 and R9). For example, 499ohm instead of 511ohm would give you 12V * (499+750) / 750 = approx. 20V, 475ohm would give you 19.6V, and so on. Paralleling 2kohm with the 511ohm gives you 1/(1/511+1/2000) = 407ohm and approx 18.5V. However, if you bias is too high, a better thing to do may be to carefully tweak resistors around V(be) multiplier (Q14) in the amp itself. Reducing R19 from 825ohm and/or increasing R18 from 221ohm would decrease bias. Be careful though - should R19 be missing, your bias current would be very high.
    1 point
  9. It appears that the 750R / 511R voltage divider feeding the opamp is what sets the gain, but I didn’t find a formula for calculating the output voltage. One guy dropped his to 19V by paralleling a 2k resistor with the 511R. https://www.diyaudio.com/forums/headphone-systems/109618-krell-ksa5-10.html#post5190186 Sent from my iPhone using Tapatalk
    1 point
  10. Chuck was fun - and they found a way to have Sarah in her underwear in almost ever episode (good writing)
    1 point
  11. Nice and sunny here again after a few cloudy days, rare here, so time to take the can-am out.
    1 point
  12. I was just wondering how this amp would work as a headphone amp. It doesn't have a headphone jack but the speakers are connected with rca plugs into rca jacks on the back of the amp. It is rated at 1.2 watts at 1000 Hz with 10% distortion. I read that it puts out .75 watts per channel with very low distortion into 8 ohm speakers. My question is how would it work to connect headphones directly to the speaker jacks with an adapter? Would any modifications need to be made? These little amps actually sound really good with small bookshelf speakers and are dirt cheap. Thanks a lot, Gene PS I have asked this same question on several forums this morning. Sorry if that is frowned upon. Thanks again!
    0 points
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