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Thread: Mounting amps upside down.

  1. Back To Top    #11

    Re: Mounting amps upside down.

    If you mount the amplifier upside down, but the woofers are rightside up, would you have a reverse phase?

    Measure with mics, mark with chalk, cut with torch, grind to fit, sand to finish, paint to match.
    Do it for them.

  2. Back To Top    #12

    Re: Mounting amps upside down.

    EDIT: (thought it would generate a preview)

    Answer: you will have this phase:
    https://youtu.be/ebuSVeTogSs


    Last edited by geolemon; 1 Week Ago at 09:56 AM.

  3. Back To Top    #13

    Re: Mounting amps upside down.

    Quote Originally Posted by Justin Zazzi View Post
    If you mount the amplifier upside down, but the woofers are rightside up, would you have a reverse phase?

    Depends on how far away your amps are from the speakers. Or more importantly. If your wires are the same length.

  4. Back To Top    #14
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    Re: Mounting amps upside down.

    Yeah that looks nice. I appreciate you sharing.

    Quote Originally Posted by TheTodd View Post
    I had a Soundstream Ref amp, which are notorious for running warm, mounted upside down for years and never had issues. As mentioned before as long as you leave enough room for cooling you should be fine.

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  5. Back To Top    #15
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    Re: Mounting amps upside down.

    Yeah Al, I was thinking about that too....only because I do like to get down from time to time....I presume I'd mount the Zapco to sort of hide it from people just walking by and it would be running 4 ohm but I'll run the sub amp in another location because that would be 1 ohm. I'll figure it out.


    Quote Originally Posted by BigAl205 View Post
    It also depends on how hard you're planning on running it. If you're going to run full blast with a 1 ohm load, it might go into protect sooner than if mounted another way. But for the average user, you should be fine.
    Man cannot remake himself without suffering....for he is both the sculptor and the statue.

  6. Back To Top    #16

    Re: Mounting amps upside down.

    Quote Originally Posted by Justin Zazzi View Post
    If you mount the amplifier upside down, but the woofers are rightside up, would you have a reverse phase?

    Thta is how they do it down under.
    (similar mechanism to the water going backwards when you flush the toilet.)

  7. Back To Top    #17

    Re: Mounting amps upside down.

    Here's an ugly view of that old winterbeater Pathfinder that I had that I mounted an amp rack (and passive Xover network) in the roof of:
    Click image for larger version. 

Name:	FB_IMG_1589063461707.jpg 
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    That amp was being pushed hard too, powering 2 subs, 4 midbass, 6 widebands, and eventually 2 tweeters as well, plus it's pushing everything through lots of passive Xover components.
    This amp was running at 2 ohms for the subs and 2 ohms for the midbass - I don't recall what impedance the widebands were but there were three so I suspect about 2.6 ohms there as well - and it never broke a sweat.

    The amp internals are still using the heatsink to draw off heat - and all you are doing is making it a tiny bit less efficient, by mounting it up where "heat rises" to. It's really not much less efficient than mounting it flat on the floor. The most efficient way is to mount it on a wall, because the rising heat will actually create a slight airflow - but again slight is the word.

    It's a much bigger deal if you enclose it in a small space, or bury it with your gym bag, or mount it to your sub box and then shove that back into your rear seatback, etc.

    No manufacturer ever asks "Where was the amp mounted?" in a warranty return.

  8. Back To Top    #18
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    Re: Mounting amps upside down.

    That looks badass man. Wow.....well that's good to know. I'm thinking of the Zapco going on the rear deck and figuring out how to allow for heat to escape from the trunk possibly through my factory 8 inch sub opening without causing issue by doing that. Or....OR! putting a fan there lol. That would be cool.

    Seriously though, thanks for the input on this guys. I want my install to be as stealth as possible so I can surprise people when I pop the trunk and you don't really see anything except the cones of the woofers.

    Quote Originally Posted by geolemon View Post
    Here's an ugly view of that old winterbeater Pathfinder that I had that I mounted an amp rack (and passive Xover network) in the roof of:
    Click image for larger version. 

Name:	FB_IMG_1589063461707.jpg 
Views:	20 
Size:	24.6 KB 
ID:	14607

    That amp was being pushed hard too, powering 2 subs, 4 midbass, 6 widebands, and eventually 2 tweeters as well, plus it's pushing everything through lots of passive Xover components.
    This amp was running at 2 ohms for the subs and 2 ohms for the midbass - I don't recall what impedance the widebands were but there were three so I suspect about 2.6 ohms there as well - and it never broke a sweat.

    The amp internals are still using the heatsink to draw off heat - and all you are doing is making it a tiny bit less efficient, by mounting it up where "heat rises" to. It's really not much less efficient than mounting it flat on the floor. The most efficient way is to mount it on a wall, because the rising heat will actually create a slight airflow - but again slight is the word.

    It's a much bigger deal if you enclose it in a small space, or bury it with your gym bag, or mount it to your sub box and then shove that back into your rear seatback, etc.

    No manufacturer ever asks "Where was the amp mounted?" in a warranty return.
    Man cannot remake himself without suffering....for he is both the sculptor and the statue.

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