Amps, Audio Electronics and the Engineering Side of things

Discussion in 'Amps and Cabs [BG]' started by Junior Patrick, May 29, 2019.

  1. I wanted to put this post out there to answer anyone who is curious about the engineering side of things and why they work the way they do without the colorful descriptions musicians tend to give to topics. Combine the two together and I think you will have an awesome understanding of things.

    Paul has been working more on the audiophile side of the house so he designs for optimizing the balance of pros and cons inherent in every amp for those priorities but you can learn what you need from his great short simplified explanations of hundreds of audio topics. I lost count over 600 was his video list last time I was listening...Anyway I hope you enjoy a little engineering education side of the art.

    What are the differences between Class A, AB, and Class D amplifiers?

    How to make Class D sound better

    The future of Class D amplifiers

    Are vacuum tubes worth it?

    Why do tubes sound different than transistors?

    What's the sweet spot for an amplifier?

    Big amps vs. little amps

    Can small amps power big speakers?

    Are expensive amps overkill?

    How do watts work?

    Are all amplifier watts the same?
    Are all amplifier watts the same?

    What's the difference between amplifier gain and watts?
    What's the difference between amplifier gain and watts?

    Does higher wattage mean better sound?
    Does higher wattage mean better sound?

    What should you look for in a power amplifier?
    What should you look for in a power amplifier?

    Why do capacitors sound different?
    Why do capacitors sound different?

    Ported loudspeakers
    Ported loudspeakers

    Can you run 4Ω speakers on an 8Ω amp?
    Can you run 4Ω speakers on an 8Ω amp?

    How to match amps to speakers
    How to match amps to speakers

    Do expensive cables matter?
    Do expensive cables matter?

    NKBassman, jw23mind and crguti like this.
  2. This is all just a taste sampler, if you really are hooked on learning more just visit PS Audio home page and pick any video that interests you:

    PS Audio
    NKBassman and rugrat like this.
  3. rugrat

    rugrat Supporting Member

    Nov 12, 2003
    Northwest Illinois
    Thanks for sharing!
  4. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    So, a big red flag comes up on your post and other posts that have absolutely nothing to do with bass guitar and everything to do with marketing of products unrelated to bass. You are a brand new user, from the audiophile community, posting links to PS Audio which is a commercial company specializing in selling VERY expensive "things" (including $150 power cords, $300 power receptacles and $8000 power conditioner/regenerator/regulator devices) to consumers.

    My red flag BS-O-Meter goes full tilt boogie because I spent some time early in my career working in that industry, I posted a story of why I left, but crooked (as an entire industry) is the main reason. The sole goal of the "audiophile" industry is to separate people from their money by promising things that unicorns are made of.

    Sorry, but I don't believe in the "hand jive" that the industry thrives on.
    bass nitro, Ronzo, nomaj and 22 others like this.
  5. My tip from just seeing the screen shot, Do not use that small pa speaker. :smug:
    He took over six minutes mostly talking about the heat and efficiency of a class A amp to say "a preamp" in a seven minute video. :bored:

    Hi @catcauphonic!
    edited to say hi to a friend.
    Last edited: May 29, 2019
  6. Yeah, this is spam.
    nomaj, Tommy V, matante and 3 others like this.
  7. All these videos are pure BS
    It should change it's name from "PS Audio" to "BS Audio"

    Hop over to Ethan Winer's channel and see where Ethan offered $1000 to debate Paul

    Paul is a no-show
    thehindteet, matante and packhowitzer like this.
  8. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
    The audiophile marketing community is made up by many who would make P.T. Barnum proud.
    Clark Dark, lowendrv, matante and 3 others like this.
  9. Jaco who?

    Jaco who?

    May 20, 2008
    agedhorse likes this.
  10. Element Zero

    Element Zero Supporting Member

    Dec 14, 2016
    Not even gonna bother listening. Super spammy post. Bleh.
    matante likes this.
  11. JW56789

    JW56789 Guest

    Feb 18, 2017
    I used to read The Absolute Sound, marveled at all the beautiful equipment and ecstatic reviews of every 'next big thing', until it dawned on me that these schmucks were buying 1000-dollar speaker cables as big as welding cables to drive their 50-grand speakers . . . . . that when you looked inside, from the jacks to the individual drivers? Tiny, tiny wire like in a 10 dollar transistor radio. I then wondered why TAB wasn't sold next to the Enquirer in the check-out line at Publix . . . . .
    agedhorse and BOOG like this.
  12. BoogieZK


    Sep 28, 2008
    Toulouse, France
    There is some serious BS infos with PS audio.

    Most important thing in audio ?
    Learn your sound by yourself and it does not matter if you play with a super Class H amp or a toaster as long as you like what you do and if it serves the music you play.

    Class D, A or AB ... Depends on the power and weight you need, the preamp is 99 % of the tone of an amp.
  13. Dear OP,

    Those of us who are more scientifically minded get our jollies there with the science while the others are hugely thankful for their dedication to the craft. The others have spent time in another aspect of creation. By how they touch those strings and make the pres react with the amp while paying close attention to the cabs affect on the emerging notes they help you remember or forget the someone you lost. They might not dial back the “colorful descriptions” they sometimes give topics because, “give me some more purple” is a language too. :)

    Not to derail because that’s some questionable audio marketing.

    There’s a difference between a musician saying he wants warmth and immediacy and an engineer interpreting that into “tone monster gear” :) that responds as a musical instrument, and selling something from an idea to an idea.
    Where’s that School? Oh yeah. Placebo U.
    bass nitro, agedhorse and BoogieZK like this.
  14. BOOG


    Dec 13, 2016
    Cleveland, Ohio
    Is Publix still in business?!
    JimmyM likes this.
  15. Turbo Sparky

    Turbo Sparky Supporting Member

    May 14, 2018
    South Eastern U.S. sure to check the box that affirms "Commercial User."
    nomaj and agedhorse like this.
  16. 40Hz

    40Hz Supporting Member

    May 24, 2006
    I was about to ask the OP that same question. As in are you?
    Turbo Sparky likes this.
  17. It's really a textbook example of a cult. Those that subscribe to it completely ignore theory and empirical knowledge.
    It's interesting that you never find these crazy suppositions that they promote, deployed in professional broadcast, recording and sound reinforcement industries.
    S-Bigbottom and agedhorse like this.
  18. cactus1


    Oct 6, 2009
    Ft Myers
    Strange question. Publix is the third largest grocery chain in the US with almost 2000 stores.
  19. mmbongo

    mmbongo I have too many basses. Supporting Member

    Publix is one of the top grocery chains in the USA.

    Publix - Wikipedia
  20. BOOG


    Dec 13, 2016
    Cleveland, Ohio
    ahhh, that explains...
    When I was a kid the best bookstore in Cleveland was Publix (sp?) and located downtown near the theater district. I thought it was a private small business but the earlier post led me to assume it may have been a small chain/franchise. I never heard of the one you mention. :laugh:
    mmbongo and cactus1 like this.