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ramteid

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Everything posted by ramteid

  1. ramteid

    glassing MDF enclosure

    If put a piece of tape on the end of a bound up slinky and then let it go does the tape move?Can you move in a sine wave without any velocity? Can you do a hair trick if the air isn't moving? Does water move when you push your hand through it? Do you need me to go on? The examples you have given arent that great. A better example would be putting a piece of tape on a part of a slinky and move one hand side to side. The energy transfers throug the slinky, making the slinky move to a certain extent, but once the energy dissipates the slinky will be in the same exact resting place as it was before the energy transfer, thus the tape would also be in the same place. Or, you could see it as a rope that is held on both ends, when someone moves one side up and down quickly you will see the rope form a wave of energy that is transfered from one end to the other, the rope itself will go back to the same resting place it was previously. That is how sound waves are transfered through mediums such as air.Maybe you should stop trying to read what isn't there.If you constrain the slinky in the stretch/compress direction it is akin to holding your speaker cone completely still. Perhaps when you move your hand through the water in a lake/bathtub/pool the water doesn't move in your mind, but I bet it is moving. And btw, sound is only transferred when it moves energy. Same with any wave. They are all kinetic. Curious in your example, did your hand 'move' the slinky? Han transfer energy to it, just as with the rope example. But if a sub moved air would it not create a vacuum? If so then how would the sound wave continue to travel past the vacuum? Apparently phsyics is completely incorrect about how sound travels. http://www.physicsclassroom.com/class/sound/u11l1c.cfmI already know that. All im trying to say is that air is the medium with which the sound travels and basically, the medium does not move. All the medium does is transfer the energy.
  2. ramteid

    glassing MDF enclosure

    A loss of energy is a loss of energy. I would think there would be much less loss with a good seam compared to a terrible seam and more loss compared to the wave traveling through the tiny pores of the wood, which is why the gain of glassing the inside is minimal?
  3. ramteid

    glassing MDF enclosure

    If put a piece of tape on the end of a bound up slinky and then let it go does the tape move?Can you move in a sine wave without any velocity? Can you do a hair trick if the air isn't moving? Does water move when you push your hand through it? Do you need me to go on? The examples you have given arent that great. A better example would be putting a piece of tape on a part of a slinky and move one hand side to side. The energy transfers throug the slinky, making the slinky move to a certain extent, but once the energy dissipates the slinky will be in the same exact resting place as it was before the energy transfer, thus the tape would also be in the same place. Or, you could see it as a rope that is held on both ends, when someone moves one side up and down quickly you will see the rope form a wave of energy that is transfered from one end to the other, the rope itself will go back to the same resting place it was previously. That is how sound waves are transfered through mediums such as air.Maybe you should stop trying to read what isn't there.If you constrain the slinky in the stretch/compress direction it is akin to holding your speaker cone completely still. Perhaps when you move your hand through the water in a lake/bathtub/pool the water doesn't move in your mind, but I bet it is moving. And btw, sound is only transferred when it moves energy. Same with any wave. They are all kinetic. Curious in your example, did your hand 'move' the slinky? Han transfer energy to it, just as with the rope example. But if a sub moved air would it not create a vacuum? If so then how would the sound wave continue to travel past the vacuum? Apparently phsyics is completely incorrect about how sound travels.
  4. ramteid

    glassing MDF enclosure

    If put a piece of tape on the end of a bound up slinky and then let it go does the tape move?Can you move in a sine wave without any velocity? Can you do a hair trick if the air isn't moving? Does water move when you push your hand through it? Do you need me to go on? The examples you have given arent that great. A better example would be putting a piece of tape on a part of a slinky and move one hand side to side. The energy transfers throug the slinky, making the slinky move to a certain extent, but once the energy dissipates the slinky will be in the same exact resting place as it was before the energy transfer, thus the tape would also be in the same place. Or, you could see it as a rope that is held on both ends, when someone moves one side up and down quickly you will see the rope form a wave of energy that is transfered from one end to the other, the rope itself will go back to the same resting place it was previously. That is how sound waves are transfered through mediums such as air.
  5. ramteid

    glassing MDF enclosure

    Im pretty sure that is incorrect. In order for it to create a vacuum it has to literally move the air, but it only does to a certain extent. The air near the subwoofer wont end up near the operator of the vehicle; its just a transfer of energy. Rareification is just the dip in between each wave, or form of energy. There is still air molecules there, they just are not as compacted because the wave of enerfy has either passed by there or the next wave has not reached that point yet. Im pretty sure im correct on this point. Btw, sorry OP, not meaning to thread jack.
  6. ramteid

    glassing MDF enclosure

    That explains some, but at the same time i still dont think it moves air, as in pushing the air, if it did, would it not create a vacuum? My understanding is that it vibrates the air, not necessarily move it.
  7. ramteid

    glassing MDF enclosure

    Correct me if im wrong, but on the whole vacuum thing, is that not completely irrelevant? A vacuum sucks in air, so it is able to move air through the pores of the mdf. With a subwoofer however, it does not move air at all, it is exciting the air molecules and basically there is a transfer of energy from one molecule to the next. So, since it is not actually moving air like a vacuum, then it is not anywhere near capable of producing the same results, making the argument of using resin in the whole enclosure invalid? Or is my extremely basic understanding of physics incorrect?
  8. ramteid

    Subs are peaking high

    I want it at 32. 35 is a rough estimate because the hifonics amp goes 30 to 250 so im not really sure spot is correct. Just try to get as close as possible. You clearly dont have a clue what your doing. First you need to educate yourself as to what the settings are for on an amp before messing with them. The LPF means it shuts off all frequencies above that setting. So if you did set it at 32 it will not play any bass at 35, 40, 45hz etc. You need to turn the LPF dial to between 80 and 100. The SSF will not let the sub play anything below what its set to. So generally you would want to set it around 25 or so unless your box is tuned higher. They roll off, not cut off. The subs will still play those frequencies above, or below, that set point, but it rolls off until it is inaudible.
  9. ramteid

    What happened to DC Creations?

    Mine was due last week of September 2013, and I have lost my patients and no longer care about being quite or nice about it.I remember he had that almost complete and then he said there were changes being made and had to rebuild but i dont know what happened after that.
  10. ramteid

    Enclosure Pricing

    Way better pricing and craftsmanship than the overwhelming majority of stereo shops around here.
  11. ramteid

    HDC4 Break in Coil smell

    May i ask which track level you used?
  12. ramteid

    Wtb kicker kq30

    How much are you wanting to spend on one? You can get them on ebay for $200~300
  13. ramteid

    Box Build for an SSA ZCON 18!

    Haha yeah, my last enclosure too a dump on me(i screwed up on part of it while building), so i designed this up and had miles build it. It is a tad bit bigger and 34~35hz tuning instead of 36hz
  14. ramteid

    Box Build for an SSA ZCON 18!

    My batteries are in the spare tire well and my amps are on the back of the seats.
  15. ramteid

    looking for clean bass music

    I edit songs, if you would like to download them send me a message.
  16. ramteid

    about the hdc4

    Taken to court by audio quest i think.
  17. ramteid

    4th order help for two zv4 18s

    Wow, so childish.. I hope you stay off this forum.
  18. ramteid

    4th order help for two zv4 18s

    Youre going from non wall to a wall, just walling and doing a ported enclosure will net you those results, if done properly.
  19. ramteid

    4th order help for two zv4 18s

    Dd-1 doesnt look for clipping. Also, just because you use a dd-1, or even an o-scope, does not mean that you will have no issues
  20. ramteid

    4th order help for two zv4 18s

    First, 4th order is NOT a bandpass. 4th describes the roll off of the enclosure. A simple ported box is a 4th order.The rest of your babble has me convinced you have been extremely confused by others. You obviously don't care to hear that nor will you do anything different no matter what we say, so that being said I think you should do a 3:1 ratio and just build your box. I'll give you another hint into reality though which you missed the first time. Anything relying on a rule of thumb doesn't always hold true, ie, using a ratio for a box is absurd. Enjoy yours. ratio does matter, tell that to the world champs that ratio dont matter. lolRatio only matters in the sense that the output and frequency response is that of what the person wants. Other than that, there is no magical "ratio" that will get you what you want every time.for me i like 25-45hz.So what makes you thin that 3:1 ratio will acheive that?
  21. ramteid

    4th order help for two zv4 18s

    First, 4th order is NOT a bandpass. 4th describes the roll off of the enclosure. A simple ported box is a 4th order.The rest of your babble has me convinced you have been extremely confused by others. You obviously don't care to hear that nor will you do anything different no matter what we say, so that being said I think you should do a 3:1 ratio and just build your box. I'll give you another hint into reality though which you missed the first time. Anything relying on a rule of thumb doesn't always hold true, ie, using a ratio for a box is absurd. Enjoy yours. ratio does matter, tell that to the world champs that ratio dont matter. lolRatio only matters in the sense that the output and frequency response is that of what the person wants. Other than that, there is no magical "ratio" that will get you what you want every time.
  22. ramteid

    4th order help for two zv4 18s

    ok now i see, you boviously dont understand how 4th orders work. 90 % of music , rap, hip hop, decaf, r&b are in 20-50 hz range. you dont ride around listening to music at 50hz and up. thats the whole purpose of a 4th order to give you a wide range of music. most 4th orders range from 25-45hz which is a excellent range. some of the loudest guys in the world have 4th orders that are very musical and can play wahtever they want at any frequency and do it loudly.The music i listen to ranges from 20hz-20khz, lol im kidding.Anyway, how does a 4th order bandpass equate to having a wider frequency bandwidth than ported? If the frequencies you are worried about is the 20-50 hz range then a 4th order bandpass will be alright, although that doesnt mean it wouldnt be easier to get that from a ported enclosure. If you have a design already in mind then whats the issue? You seem to not care what anyone says, so why not just do what you plan on doing, since thats the route youre going to take regaurdless. Heres the thing im done with ported boxes, its time to move to the next step which is a wall. Im already loud with a ported box now. but thats like saying my ported box which has three 18s in it will be louder than it being walled. it aint happening. Im sorry you cat compare a ported box to a wall, only way that wlll happen if you had a retareded amount of power. I alreadly run 10-12k rms daily. Talking about a ported wall. Just because you are walling it off does not mean that you have to do a 4th order bandpass. The reason a lot of spl competitors use them is just that, for spl, because they can get a huge peak for spl somewhat easier.
  23. ramteid

    DB's doing to your hearing?

    Wouldnt the frequency also have a lot to do with it? Since human hearing is not flat.
  24. ramteid

    4th order help for two zv4 18s

    ok now i see, you boviously dont understand how 4th orders work. 90 % of music , rap, hip hop, decaf, r&b are in 20-50 hz range. you dont ride around listening to music at 50hz and up. thats the whole purpose of a 4th order to give you a wide range of music. most 4th orders range from 25-45hz which is a excellent range. some of the loudest guys in the world have 4th orders that are very musical and can play wahtever they want at any frequency and do it loudly. The music i listen to ranges from 20hz-20khz, lol im kidding. Anyway, how does a 4th order bandpass equate to having a wider frequency bandwidth than ported? If the frequencies you are worried about is the 20-50 hz range then a 4th order bandpass will be alright, although that doesnt mean it wouldnt be easier to get that from a ported enclosure. If you have a design already in mind then whats the issue? You seem to not care what anyone says, so why not just do what you plan on doing, since thats the route youre going to take regaurdless.
  25. Great, now i dont have to watch facebook for updates on this build!!
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