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  • #16
    Originally posted by Fishchris View Post
    Why do guys like Steve Meade, or JPrice run 40 to 100Kwts ? They don't know what they are doing either ?
    Different design goals. And the smaller the boxes, the more power you've got to feed them to get to a specific SPL level. From the looks of it, those speaker boxes on the Dancetronaut's vehicle were not small.
    Brian Steele
    www.diysubwoofers.org

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    • #17
      Originally posted by Brian Steele View Post

      Different design goals. And the smaller the boxes, the more power you've got to feed them to get to a specific SPL level. From the looks of it, those speaker boxes on the Dancetronaut's vehicle were not small.
      Well just to be clear, I'd love to have one of those crazy high end systems like SMD, or JP's...
      But for one thing, I don't have sponsors, nor $10's of thousands to spend on the equipment needed. Also, I can't imagine going up against guys at that level.

      I'm more into SQL anyway. Have you seen SMD's Lexus ISF build ? Thats "only" like a 7Kwt system, but ultra clean, plus that car is deadened like a bank vault ! That is more of a dream system for me, and maybe more obtainable ?

      Comment


      • #18
        Originally posted by Fishchris View Post

        Hey Bill, I'm sure I do have a lot to learn. So are you saying I could have a crazy loud, clean, earth shaking system with like 1/10th the wattage I'm talking about.... Or something to this effect ?

        Why do guys like Steve Meade, or JPrice run 40 to 100Kwts ? They don't know what they are doing either ?
        If you stick around in this hobby long enough, with a learning attitude not a combative one, you will learn why some need a small nuclear power plant to power their radios.
        http://techtalk.parts-express.com/fo...khanspires-but
        http://techtalk.parts-express.com/fo...pico-neo-build
        http://techtalk.parts-express.com/fo...ensation-build

        Comment


        • #19
          Originally posted by Fishchris View Post
          So are you saying I could have a crazy loud, clean, earth shaking system with like 1/10th the wattage I'm talking about....
          1/10th the power is a 10dB reduction in level. A horn loaded driver can run with 10dB higher sensitivity than when direct radiating, so you can reach the same level with 1/10 the power and a far lower driver count as well.
          Why do guys like Steve Meade, or JPrice run 40 to 100Kwts ? They don't know what they are doing either?
          They know that kiddies of all ages are impressed with big numbers.

          I can see why
          Look at the speakers, Mike. look at the speakers.
          www.billfitzmaurice.com
          www.billfitzmaurice.info/forum

          Comment


          • #20
            SMD is not as knowledgeable as he seems. Talking bass and power, he sometimes knows. Talking mids, highs, and xovers, he is pretty clueless. A fellow friend of ours here debated xover knowledge and was banned due to disagreement with SMD.

            Some music has 30dB dynamic peaks, so a paltry 10dB headroom will still clip the amp. For an 82dB sensitivity, you require 250W to not clip at moderate levels. Paul's are generally higher than that due to lower BSC and closer room loading. This means he's likely about 85dB and requiring 125W to not clip- even though more average power usage is 20-30W as he says. This is why boosting via EQ or DSP can tax amplifiers heavily.

            Later,
            Wolf
            "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
            "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
            "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
            "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

            *InDIYana event website*

            Photobucket pages:
            http://photobucket.com/Wolf-Speakers_and_more

            My blog/writeups/thoughts here at PE:
            http://techtalk.parts-express.com/blog.php?u=4102

            Comment


            • #21
              There's no "road noise" in my quiet living room and I don't need to have the bottom of my stomach shaken in order to very much enjoy music.
              Paul

              Originally posted by Fishchris View Post

              Paul, then we are obviously on a completely different page. I like to be able to "feel my music in the bottom of my stomach".... Then you have road noise, and my not so quiet truck....
              with dynamic peaks and such, I can easily use up 2 Kwts. Wish I had 10 Kwts even if I only used 3 of them.

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              • #22
                Not to be your mother or anything, and I hope you know this already, but the only way you'll get good SNR in a car is to turn it up to ear-destroying levels.
                Francis

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                • #23
                  ... and have you ever noticed any ear protection used in those spl videos? Or does hearing protection even work at those frequencies and pressure levels?
                  http://techtalk.parts-express.com/fo...khanspires-but
                  http://techtalk.parts-express.com/fo...pico-neo-build
                  http://techtalk.parts-express.com/fo...ensation-build

                  Comment


                  • #24
                    Originally posted by Kornbread View Post
                    ... and have you ever noticed any ear protection used in those spl videos? Or does hearing protection even work at those frequencies and pressure levels?
                    Yeah, I don't like to snipe at other people's hobbies, but that crowd will be candidates for hearing aids soon enough. Their ears to ruin, I guess.
                    Francis

                    Comment


                    • #25
                      Originally posted by Wolf View Post
                      SMD is not as knowledgeable as he seems. Talking bass and power, he sometimes knows. Talking mids, highs, and xovers, he is pretty clueless. A fellow friend of ours here debated xover knowledge and was banned due to disagreement with SMD.

                      Some music has 30dB dynamic peaks, so a paltry 10dB headroom will still clip the amp. For an 82dB sensitivity, you require 250W to not clip at moderate levels. Paul's are generally higher than that due to lower BSC and closer room loading. This means he's likely about 85dB and requiring 125W to not clip- even though more average power usage is 20-30W as he says. This is why boosting via EQ or DSP can tax amplifiers heavily.

                      Later,
                      Wolf
                      Well this sounds to me like a good reason to have lots of extra power on tap.

                      Comment


                      • #26
                        Yes- which means running full-tilt is not advisable if you value the life of your amplifier. I have Crown amps running at home with about 750W/channel, but I too only use on average 20-30W. I will not be clipping my amps with music, even with an 80dB speaker.

                        Later,
                        Wolf
                        "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                        "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                        "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                        "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                        *InDIYana event website*

                        Photobucket pages:
                        http://photobucket.com/Wolf-Speakers_and_more

                        My blog/writeups/thoughts here at PE:
                        http://techtalk.parts-express.com/blog.php?u=4102

                        Comment


                        • #27
                          While you're crunching numbers on your power output, you may want to check these numbers out. https://hearinghealthmatters.org/way...what-pressure/
                          Glenn.

                          Comment


                          • #28
                            So here’s my, “Ok Boomer” thoughts.

                            When I was a kid I too chased good sound in a moving car. Never found, (heard) it! Never! In a moving car.

                            As has been mentioned, you can’t get real dynamic range with that high a noise floor.

                            I get my news and listen to, “Talk” radio in my car. I save the music for my quiet living room.

                            Have Fun! Mark

                            Comment


                            • #29
                              Originally posted by Psycoacoustics View Post
                              As has been mentioned, you can’t get real dynamic range with that high a noise floor.
                              True. At a comfortable, but by no means low, listening level the measured difference between having my radio off versus on is only 10dB, and I'm not riding around in a teenager's ricer, I drive a BMW. Do I care? No. It's not Carnegie Hall. It's a car.

                              www.billfitzmaurice.com
                              www.billfitzmaurice.info/forum

                              Comment


                              • #30
                                When I'm just driving around town, shopping and stuff, my car radio is tuned to the Ohio State University station that plays classical music 24/7, with the volume set for background levels. If I happen to take a road trip, like to InDIYana or PE's MWAF, I take along CDs of small ensembles, like string trios and quartets, where the dynamic range is much less than for a symphony orchestra and a convenient and safe volume level suffices for being able to hear most of the music.
                                Paul

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