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  1. Dave_Gib

    time correction

    John, it just came to me, I think what you are talking about with these speaker builders putting the tweeters further back has more to do with higher frequencies transitioning to the far-field further down range than freqs coming from the mids. It sounds interesting, I'll have to look into...
  2. Dave_Gib

    time correction

    yeah, the doppler effect.......doesn't have anything to do with higher frequencies traveling faster....if they do..... What I was looking to eventually do is play with time correction on the horns for different listening positions. For a long room, I play the Wii game system about 5 feet...
  3. Dave_Gib

    time correction

    I got it, sound waves in a line array have no special propagation characteristics. I have no problems at all. I got a new head unit for my truck with time correction it made a really big difference, just thinking of something for the house. I could build a crescent moon enclosure to take...
  4. Dave_Gib

    time correction

    I have some hybrid line arrays, a line of mids matched up with a single compression horn tweeter. I know that the difference in intensity between a line source and point source gets more dramatic the further away you get. Does the rate of propagation change? The speed of sound is still the...
  5. Dave_Gib

    little help with bracing

    Sorry, should've mentioned, it's a sealed enclosure.
  6. Dave_Gib

    little help with bracing

    Do you think the hole is big enough. The braces don't go all the way to the back corner, or all the way out to the side corners, but is the hole in the middle big enough, it's about 4.5 inches in diameter, I could cut another one right behind it if necessary. Where the braces need to be for...
  7. Dave_Gib

    18" subs

    Not with the amount of power I can give them, even with a 15 cu.ft. box. And I really doubt my neighbors can hear me
  8. Dave_Gib

    18" subs

    yeah, I just looked into that, great deal, but at 4 ohm stereo with my amp it's barely a step up I feel like I am wasting too much time on this, I think I will just build a new box for the daytons and spend the money on a new center channel
  9. Dave_Gib

    18" subs

    right, but a XXX 18 has 34% more displacement, for ~$30 more, which I think would put me right where I want to be, for now...... pluggable ports does sound like a good idea, I guess I could use plumber's fittings on the end, like a 4" pvc pipe with a screw on cap......maybe paint it black...
  10. Dave_Gib

    18" subs

    it all looked good until I saw the Pnom, I guess that's thermal. I'll be driving the sub with a QSC 1450 RMX @ 4 ohms mono, might smoke it after a while. Espeacially with some of the parties around here;) I think I will go ported tuned to ~30Hz, right now those daytons are tuned to about 16...
  11. Dave_Gib

    18" subs

    I'm looking for an 18" supersub or maybe a couple of desent ones for my HT. The 4 12" Dayton DVC's just aren't doing it for me anymore, I need to move some more air. I have been looking at an RE 18" XXX, or maybe a couple of the SX 18's, I will probably go with one of those choices if you guys...
  12. Dave_Gib

    Just never happy

    the enclosure in the truck is tuned to the mid/low 20's, because in a small pickup you don't have as much cabin gain as you would in most other cars, I used my little 10" Dayton DVC in a sealed enclosure .707 alignment to find the cabin gain in the truck before I built the box, the response...
  13. Dave_Gib

    Just never happy

    I really do, I just like the headroom
  14. Dave_Gib

    Just never happy

    well the living room is in the middle of the house, it connects the upstairs to the den, so yeah, there is alot of air there to be moved as far as normal listening levels in the truck, I'd say I keep it under 130 dBs most of the time, it'll do 150's below 30Hz on an AC mic, the best I ever...
  15. Dave_Gib

    Just never happy

    Hey, Offering this one up for ideas, I wanna hear your thoughts, and mostly the reasoning behind your suggestion. So, I got this living room, 13 X 16 X 8, it's a little small, but huge compared to what I am used too in an automobile. Anyway, enough with the background, I got a problem...
  16. Dave_Gib

    Jasper Jig Model 200 deficiencies

    I'm a big fan of my Jasper jig too, it's the model 200, I have had it for about 2 years now, I've never worried about it breaking, I take care of it. The only bad thing I see about the perfect aluminum from the link is every time you go back to do one size hole you have to measure and set it...
  17. Dave_Gib

    My DIY sub

    the internals are 28" x 28" x 22", before bracing, the port is folded on the bottom which gave it a total height of about 40"
  18. Dave_Gib

    My DIY sub

    I would, but it weighs more than me, without the subs, and all that stuff in front of it would have to be moved again
  19. Dave_Gib

    My DIY sub

    yeah, took the crossover plans from HERE I went with a slot port, but essentially the same design
  20. Dave_Gib

    My DIY sub

    it's a little over 9 cu.ft. internal, I first had it tuned to 20 Hz, before I put the oak panels on, so I played with the port, it should be around 16Hz, haven't taken any measurements, but it sounds like mid to upper teens
  21. Dave_Gib

    My DIY sub

    it's 4 12" Dayton DVC's off a 1400w QSC amp I've had it for a while, but just got the picture trail account and now I can post pics I just watched "Attack of the Clones", caught the end of it on HBO, from where they were in an arena and had to jump on those crazy animals, from the...
  22. Dave_Gib

    Need to flush mount a 3" speaker?

    I use a circle cutting jig, and the size bit that the jig is set for, I think it's 1/4 inch, just do the outside diameter first and work your way back in at the same depth
  23. Dave_Gib

    port theory

    people on CAF said it would act more like a 2 inch wide port, but the 4 inch half at the end of the port would cut back on wind speed I will test it when it's done and post results
  24. Dave_Gib

    port theory

    if I have one port, with 180 degree bend( the port doubles back on itself ) now the first part of the port is 2 inches wide, and the second part of the port(after the bend) is 4 inches wide all other parameters equal, does that give me a 3 inch wide port?
  25. Dave_Gib

    HT school of thought

    in car audio you want the music to sound like it is coming from in front of you so you cross your subs over as low as your midbass drivers will allow as far as choosing your midbass driver you are much more limited in a car than you are in a house. being able to put an 8" woofer in the...
  26. Dave_Gib

    DIY crossover for subwoofer

    it's an unfinished basement
  27. Dave_Gib

    DIY crossover for subwoofer

    I read that on these forums in one of my searches, when I brought it up at parts express the guy looked at me like I was crazy, oh well, silly salesman. Parts express has Behringer products now, they had another Behringer product there that was just a crossover, for $90, I thought about it...
  28. Dave_Gib

    DIY crossover for subwoofer

    yeah, I did bottom them out playing video games, but I wont watch movies loud enough to do any damage, I'm not worried about them too much, they've seen much worse abuse I got to do something for now, I can't see any problems from using a car crossover in the house, what could go wrong...
  29. Dave_Gib

    DIY crossover for subwoofer

    I still haven't found a grill to cover the hole, I need to look harder I did get the amp, I hooked it up to a coulpe of high excursion car audio subwoofers in a 3 cu.ft. ported box tuned to ~30 Hz I have watched some movies, played some video games, and listened to music, I see now why you...
  30. Dave_Gib

    Some crazy DIY sub questions...

    I love your box with the 2 Stryke 15's but a box with a sub on each side would have some bad cancellation issues http://www.teamgates.net/bronco.html all that equipment and when they first hooked it up, it was only playing in the 140's, they had cancellation from the subs facing those...
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