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Wiring mono amp to 3 subs

Discussion in 'Audio & Video' started by tacomonazul, Feb 15, 2014.

  1. Feb 15, 2014 at 4:07 PM
    #1
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    http://www.tacomaworld.com/forum/2nd-gen-builds/227832-my-never-end-build.html
    Trying to wire a Alpine PDW 1000w mono amp to 3 JL w3 10'' subs. The problem is that when I turn the volume up on the bass the amp auto protects and turns off the subs, I was told that probably it was wired wrong so what you guys think it is the problem? Also bought 14 gauge cable and fused terminals.
    Uploading pics while installing new terminals.
     
  2. Feb 15, 2014 at 4:13 PM
    #2
    Justus

    Justus fucks not given

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    Crutchfield has decent write ups.... Not sure how u wired urs
     
  3. Feb 15, 2014 at 4:36 PM
    #3
    ABA180

    ABA180 It burns when I pee....

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    Read this first..shows different ways to wire your stuff.

    http://www.termpro.com/asp/pubs.asp?ID=124

    I'd need to know the subs you have, in particular the Ohm rating on them.

    Looking at the amp quickly it is 2Ohm stable. You might be running it down to 1Ohm with your current wiring which is going to put your amp in protect mode.

    That link I posted will guide you well.
     
  4. Feb 15, 2014 at 6:46 PM
    #4
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    http://www.tacomaworld.com/forum/2nd-gen-builds/227832-my-never-end-build.html
    I have 3 JL 10W3v3-4 10-inch (250 mm) Subwoofer Driver, 4 Ω, in two boxes, one box with one subwoofer and 1 box with 2 subwoofers

    Here are the specs
    Captura de pantalla 2014-02-15 a la(s) 6.43.46 PM.png
     
  5. Feb 15, 2014 at 6:56 PM
    #5
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    http://www.tacomaworld.com/forum/2nd-gen-builds/227832-my-never-end-build.html
    Found this on crutchfield.com will it work?

    [​IMG]
     
  6. Feb 15, 2014 at 7:42 PM
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    ABA180

    ABA180 It burns when I pee....

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    Is this your amp?

    http://www.alpine-usa.com/product/view/pdx-11000/

    If so, not happening. Your amp is only stable down to 2Ohm. That load of less than 2Ohm will damage your amp long term, plus you'll have the same problems you have now. Note the "Warning" on the diagram.

    Your options would be:

    Wire 2 of the subs in that parallel configuration. Can't use the 3rd.

    Buy another amp that is 1Ohm stable and keep the 3 subs.
     
  7. Feb 15, 2014 at 8:00 PM
    #7
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    http://www.tacomaworld.com/forum/2nd-gen-builds/227832-my-never-end-build.html
    Yes that's my amp
    So I can only connect 2 subs? Like this?
    [​IMG]
     
  8. Feb 15, 2014 at 8:20 PM
    #8
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    http://www.tacomaworld.com/forum/2nd-gen-builds/227832-my-never-end-build.html
    Ok so I only connected 2 subs, sounds way better. Didn't find a button or something to change independence so I assume the amp does it automatically, Last thing to do is tune these knobs. How should I tune them?

    IMG_1346.jpg
     
  9. Feb 15, 2014 at 11:41 PM
    #9
    ABA180

    ABA180 It burns when I pee....

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    That's the way..

    The amp is a mono, so regardless of how many speakers you hook up you'll get both the left and right from each speaker.

    The gain you want to turn the radio up about 3/4 of the way. Turn the gain up till you start to hear distortion, then back off a tiny bit.

    Not familiar with the other 3, I'll have to do a little more digging.
     
  10. Feb 15, 2014 at 11:55 PM
    #10
    ABA180

    ABA180 It burns when I pee....

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    OK found it:

    For the SELECT switch, you need to determine the output of your head unit. My guess is the 1-8 volt but merely a shot in the dark.

    LP FILTER is at what point you want it to stop allowing the frequency through. The lower the #, the lower the tone it will block at. My advice is start at the highest setting and play with it from there to what your personal taste is..can't damage the amp with that.

    SUBSONIC FILTER, I'd go with none or 15HZ. Alpine recommends the 15 when using subs such as 10" bass speakers if the sound seems less distorted versus the none setting. 30HZ is for ordinary speakers (such as a mid bass).

    I'm taking a stab you don't have the instruction sheet with this amp. I found it at the link below, only 2 pages so it will download fast..this is where I got the information I listed on this post. I saved a copy in my email, you can either PM me your email and I'll send it or search for Alpine PDX-1.1000 manual at this link:

    http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

    Sorry for the delayed response. Here in MA we've gotten over a foot of snow so I've been dropping in between snowblower runs :)

    I'd see how you like the sound of it and go from there as to your ultimate solution. You may be satisfied as is with the 2 subs. If so, you've got a spare sub in case one pops or can sell one. If not, sell or trade your amp for another. Just make damn sure if you go that route that the new amp is 1Ohm stable. If it is, use the diagram for the 3 subs you posted and you'll be golden.

    Keep me posted how it sounds once you mess with the other 3 settings..
     
    Last edited: Feb 16, 2014
  11. Feb 16, 2014 at 12:42 AM
    #11
    AznTRD

    AznTRD Well-Known Member

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    Since he has the 3 subs in 2 boxes.. If the box with 2 subs is wired in parallel, then wire the 2 boxes in series to the mono amp, wouldn't it bring the impedence over 2 Ohm? Not sure what the watts per sub would be, still need to do the math.
     
  12. Feb 16, 2014 at 12:24 PM
    #12
    tacomonazul

    tacomonazul [OP] Well-Known Member

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  13. Feb 16, 2014 at 2:57 PM
    #13
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    New subwoofer terminals

    IMG_1345.jpg

    IMG_1343.jpg
     
  14. Feb 19, 2014 at 8:56 PM
    #14
    ABA180

    ABA180 It burns when I pee....

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  15. Feb 19, 2014 at 10:21 PM
    #15
    tacomonazul

    tacomonazul [OP] Well-Known Member

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    Tried the amp on the 1-8 volt setting but makes subwoofers hear very low
     
  16. Feb 20, 2014 at 2:54 PM
    #16
    ABA180

    ABA180 It burns when I pee....

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    Toss it back to the 0-1 then if that sounds better..

    How are you liking it so far?
     
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