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Mike1234

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Posts posted by Mike1234

  1. Posted · Edited by Mike1234

    Robert: Thanks for the info. For IB I don't think Qts is terribly important provided I keep it below .7, Fs is fine as long as it's below 25. The most important thing is finding those with strong linear motors with low distortion. I'm using a BFD to smooth the response and EP2500's to power them.

    M5: You're right about that but, as per above, I think it'll be okay.

    Frito: I'll research the RS390 a bit more. I don't intend to overdrive these subs so perhaps the tin can pop won't be an issue. Oh... and don't smoke your sub. Just buy another one for eardrum popping output, heh, heh.

    You gouys rock!! :slayer:

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  2. Posted

    The Dayton RS390HF is definitely a welcome option. I've heard many good things about them. However, I've also heard that their cones can pop like a tin can if driven hard. That worries me. I'm sure I can build a box strong enough to handle the Axis.

    A TL, eh? Can you post a pick or link? TL's do intrigue me but I'd probably take the easy route and use reinforced Sonotube.

    I haven't use my axis in a sealed box yet, im afraid it will rip the box apart. it seem you know more about things than me too, but i use a trans line in the corner of my room, that is the box that caused everythin to rattle, i also have good experience from my dayton hf 15, it cant take all off the 500 watts in the trans line enclosure, but it definately had great sq and rattled walls, i know that wasnt one of your options, but its another sub from PE
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  3. Posted · Edited by Mike1234

    I'm not yet sure whether these will be Infinite Baffle (mounted in manifolds with rear acoustic output vented into the attic) or large sealed boxes. I prefer IB but the layout of my living room may make this impossible. Most likely two pairs will be corner loaded (facing the corners) in the back of the room. A pair of 18's will be located centrally between the mains. Each pair will have one driver facing inward and the other outward to cancel motor nonlinearities (a type of distortion). This is not isobaric (face-to-face) mounted but rather they'll be in separate chambers so I don't lose total SPL capablities.

    EDIT: And I WANT my walls to rattle!! :-)

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  7. Posted · Edited by Mike1234

    I'm in the market for 4 new 15-18" subwoofers for HT and music. SQ is my major concern. SPL is important too but only if SQ is not compromised.

    Of those listed in the title which would you recommend and why? These will either be in sealed boxes with a Q of .5-.6 or mounted in IB manifolds. In either case they'll be crossed and EQed digitally so driver Q doesn't really matter. Efficiency doesn't matter either because brute power is fairly cheap these days.

    BTW, the Audiopulse is on a one day sale for $348 at PE and the AE AV15's are on their last day pre-order price of $219. So... I need help TODAY!!

    Feel free to make other suggestions but please explain your reasoning.:D

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  12. Posted

    I can't say yet. I'm not trying to blow you off. I'm just waiting for the mods to let me list them... I don't want to break forum rules. Suffice it to say that these will make someone very happy.

    Mike, what choo got?
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  18. Posted

    Right-click the file, select "Open With" from the pop-up menu, select "Coose Program", scroll through the pop-up window and select the application you want that type of file to open with, click the radio button labled "Always use the selected program to open this type of file", click "Okay". This is Windows XP but they're all about the same... maybe not Vista, which I have never used... or Mac OSx either.

    Quicktime probably set itself to be the default player for all videos.

    Just need to reset the other programs to be the defaults instead.

    How to do this, I have no idea. :D

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  19. Posted

    Did you ever build your TL? You can decrease the length of your tube by building a concentric design... a smaller tube inside a larger one. The sub mounts to one end of the smaller tube and the smaller tube is inserted centered in the larger tube, which is capped off at the far end. The open end of the smaller tube is held away from the capped end of the larger tube with stand-offs. This creates a 180 degree bend through which the sound travels and reverses direction traveling back through the larger tube. This design cuts the length of the tube(s) in half. However, you must use the right size tubes or tuning will be impossible. If you really wanted to shorted the length, you could use three tubes. Of course, choosing the right sizes becomes more complicated.

    It's just another option.

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  23. Posted

    Not intending to argue but, depending on the size of his other drivers, he may cross them as high as 120Hz. This is directional even in a car. Yes, it would be silly to cross subs at different frequencies... not what I said :-)

    It depends on the x-over point and the source material =-)
    What about two HQ 8" subs? You can run them in stereo.

    Lol subs in stereo. That's pretty funny.

    Again, like Jim said.. not in a vehicle.

    What do you mean by crossover point? It'd be pretty silly to cross each sub of the same type over differently.

    And source material? Do you know anyone that has 11.2 surround in their car? Because I sure don't. There are few theatres that even use it. 5.1 = mono sub(s).

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