Results 1 to 22 of 22

Thread: help with an amp

  1. #1
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default help with an amp

    ok i just got 2 12's the are ma audio, and are like 800 watts each http://cgi.ebay.com/ebaymotors/800-W...QQcmdZViewItem
    and so i want an amp to get the most out of them, what kind of amp should i get?, and what is the difference between mono, 2, 4, channel amps? how manny watts to power two? thanks reps wil be givin



    Contact TRS at [email protected] or call us at 480-745-3990

  2. #2
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    oh an one more thing do i need one of those coil things? just tell me all that i need so i wont blow anything



    Contact TRS at [email protected] or call us at 480-745-3990

  3. #3
    Moderator BanginJimmy's Avatar
    Join Date
    Oct 2005
    Location
    Hiram, GA
    Age
    46
    Posts
    7,499
    Rep Power
    31

    Default

    not sure what you mean by coil thing.

    The amp you need will do ~800wrms at either 4 or 1 ohm.

    Mono, 2ch and 4ch are just the number of channels the amp has.
    Mono = 1
    2ch = 2 seperate channels
    4ch = 4 seperate channels.

  4. #4
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    sorry i found out its called a capacitor, do i need it?

    what is the difference in ohms?



    Contact TRS at [email protected] or call us at 480-745-3990

  5. #5
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    and one more question, would this box be good for those 2 MA audio subs? would there be too much pressure?

    here is the box
    http://www.preludepower.com/forums/s...d.php?t=274967



    Contact TRS at [email protected] or call us at 480-745-3990

  6. #6
    Senior Member redgst97's Avatar
    Join Date
    Nov 2002
    Location
    Cumming, GA
    Age
    53
    Posts
    1,318
    Rep Power
    25

    Default

    If the install is done properly, you will not necessarily need a "coil thingy" or a capacitor. Make sure you have proper sized power and ground cables. Depending on how old your car is, you might want to investigate upgrading/replacing the factory ground and power cables. Things like battery to chassis, battery to fuse panel, alternator to battey, etc. Replacing these old/too small/corroded/oxidized cables will be an improvent to start with, and if you go up a size in cable (suggested) you will be even better off.

    I did not ready the whole thread you listed above, but at first glace, that box seems to be built fairly well.

    2007, 2008, & 2009 IASCA National SQi Champion Pro Ultimate
    Total of 5 National Sound Quality Championships.

  7. #7
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    ok thanks and what gauge wire will i need



    Contact TRS at [email protected] or call us at 480-745-3990

  8. #8
    Blacc Panther member
    Join Date
    Jan 2007
    Location
    look to ya left
    Posts
    8,540
    Rep Power
    31

    Default

    4 gauage or better... no wal- mart kits either son

  9. #9
    IA's Instigator
    Join Date
    Jul 2006
    Location
    Statesboro
    Age
    35
    Posts
    2,972
    Rep Power
    23

    Default

    to be honest ive been pleased with a few wallmart kits, but at the time it was usually 10 at night when we were installing it and too lazy to wait tillt omorrow. never had issues, but it was installed professionally, but not in a shop.

  10. #10
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    there are 3 ways you can wire these subs up; 1. run parallel into 1ohm 2. in series to an 8ohm laod or 3. you can run these in a 4ohm operation. to rin these in 1ohm, connect the positive side of the sub to the other positive side of the sub and wire both subs together this way then connect it to the box. for 8ohm operation the positive side of the sub to the negative side on the same sub and connect it to the other sub the same way. for 4ohm connect one side positive to one side negative on the same sub then connect it to the other sub, on this one you want + to + and - to - and you will yield a 4ohm load.

    as far as your amp is concrened both of your subs are 800watt max and 400watt rms (continuous power) so you will need an amp that is capable of a 1ohm load which would let you run a smaller amp and still get mega power. i would recommend a mono amp that will push 400watts rms @ 1ohm. why? because your subs will sound like 800 watts. how? each sub will see 400watts of power not just one of them. and its easier for an amp to push that kind of power at 1ohm and it will be harder to find one and more expensive to push that @ 4ohms. 400watt mono amps that are 1ohm stable can get you 400watts rms, @ 4ohms you would need a really good 800watt amp. can you see the price difference?

    as far as the box, all of them have pros and cons. if you want to save money just go off the shelf sealed box. bandpass and slot ported have pros and cons but sound best when you get them custome built.

    LMK if u have anymore questions

  11. #11
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    oh and amp kits are all the same what seperates all amp kits are the rca cables. as long as the wires are the correct size you'll be fine.

  12. #12
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    ok thanks, so what is the difference in th ohm rating in the amps?



    Contact TRS at [email protected] or call us at 480-745-3990

  13. #13
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    ohms is the resistance, less resistance = more power out of that amp. ie; 800watt max amp that would be 4ohm and 1ohm stable @ 4ohms you would look at around (depending on the amp) 400watts continuous and @ 1ohm you would be around 800watts continuous. better quality amps underrate their stuff like JL Audio, Rockford Fosgate, Memphis....etc.

  14. #14
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    obviously a 800watt amp is more expensive than a 400 watt amp, that is why i am advising you to find a 400 or 500 watt mono amp that is 1ohm stable. those MA Audios hit hard i had 1 10 before and it shook my hatch. @1ohm both your subs will see 400watts 400x2=800

  15. #15
    Moderator BanginJimmy's Avatar
    Join Date
    Oct 2005
    Location
    Hiram, GA
    Age
    46
    Posts
    7,499
    Rep Power
    31

    Default

    Quote Originally Posted by BLACK_EK9
    oh and amp kits are all the same what seperates all amp kits are the rca cables. as long as the wires are the correct size you'll be fine.
    actually you are extremely wrong

    All wire is not created equal. Cheap wire is cheap for a reason. Less strands equal higher internal resistance. Also if you look at cheap cable compared to a higher end cable you will see that a higher end cable will have more wire and less shielding.

    RCA's are also a big difference, but not to biggest.

  16. #16
    Moderator BanginJimmy's Avatar
    Join Date
    Oct 2005
    Location
    Hiram, GA
    Age
    46
    Posts
    7,499
    Rep Power
    31

    Default

    Quote Originally Posted by BLACK_EK9
    there are 3 ways you can wire these subs up; 1. run parallel into 1ohm
    correct


    Quote Originally Posted by BLACK_EK9
    in series to an 8ohm laod or
    wrong. running both subs in series will result in a 16ohm load.

    Quote Originally Posted by BLACK_EK9
    3. you can run these in a 4ohm operation.
    correct. This is called series/paralell wiring


    [IMG]http://mobile.jlaudio.com/graphics/S...C_Series_2.gif[/IMG]


    Quote Originally Posted by BLACK_EK9
    as far as your amp is concrened both of your subs are 800watt max and 400watt rms (continuous power) so you will need an amp that is capable of a 1ohm load which would let you run a smaller amp and still get mega power. i would recommend a mono amp that will push 400watts rms @ 1ohm.
    why would you only want 400wrms at 1 ohm when you are using 2 D4 subs that are 400wrms each?




    Quote Originally Posted by BLACK_EK9
    why? because your subs will sound like 800 watts.
    this is a joke right?

    Quote Originally Posted by BLACK_EK9
    how? each sub will see 400watts of power not just one of them. and its easier for an amp to push that kind of power at 1ohm and it will be harder to find one and more expensive to push that @ 4ohms. 400watt mono amps that are 1ohm stable can get you 400watts rms, @ 4ohms you would need a really good 800watt amp. can you see the price difference?
    What the hell are you talking about?



    Quote Originally Posted by BLACK_EK9
    LMK if u have anymore questions
    please dont post in this section anymore. You arent doing anything more than spouting wrong info.

  17. #17
    Moderator BanginJimmy's Avatar
    Join Date
    Oct 2005
    Location
    Hiram, GA
    Age
    46
    Posts
    7,499
    Rep Power
    31

    Default

    ohms is a measure of resistance. Amps are designed to be run at certian resistance loads. It is best to pick your subs and amps to get the ebst from both by matching RMS power output with the final resistance of the subs you use.

  18. #18
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    Quote Originally Posted by BLACK_EK9
    ohms is the resistance, less resistance = more power out of that amp
    i always get confused with parallel and in series . and you were right on the 16ohm as well each sub will see 400watts @ 1ohm, if not explain why . and yea a more expensive wiring kit is better but not necessary, i would just upgrade the rca's as to me are the worst part of wal mart cheapo amp kits.

  19. #19
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    Quote Originally Posted by BanginJimmy
    ohms is a measure of resistance. Amps are designed to be run at certian resistance loads. It is best to pick your subs and amps to get the ebst from both by matching RMS power output with the final resistance of the subs you use.
    isnt that what i said???

  20. #20
    94 acord parting out bb4pimp's Avatar
    Join Date
    Sep 2007
    Location
    douglasville
    Age
    40
    Posts
    864
    Rep Power
    19

    Default

    thanks guys



    Contact TRS at [email protected] or call us at 480-745-3990

  21. #21
    Moderator BanginJimmy's Avatar
    Join Date
    Oct 2005
    Location
    Hiram, GA
    Age
    46
    Posts
    7,499
    Rep Power
    31

    Default

    Quote Originally Posted by BLACK_EK9
    ohms is the resistance, less resistance = more power out of that amp. ie; 800watt max amp that would be 4ohm and 1ohm stable @ 4ohms you would look at around (depending on the amp) 400watts continuous and @ 1ohm you would be around 800watts continuous. better quality amps underrate their stuff like JL Audio, Rockford Fosgate, Memphis....etc.
    QUOTE=BLACK_EK9]isnt that what i said??? [/QUOTE]

    no, you said that less resitance means more power, thats not true. If an amp is designed to have the same power at 1-4 ohms like the JL slash series you dont get more power with fewer ohms. Also, a 2ch gets more power bridged than you will with individual channels.

  22. #22
    Certified Gearhead
    Join Date
    Feb 2006
    Location
    Atlanta, GA
    Age
    41
    Posts
    393
    Rep Power
    20

    Default

    true...not every amp is the same and i hope whoever buys an amp reads or does research on what it can do...most amps dont give the same power at different ohms

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
ImportAtlanta is a community of gearheads and car enthusiasts. It does not matter what kind of car or bike you drive, IA is an open community for any gearhead. Whether you're looking for advice on a performance build or posting your wheels for sale, you're welcome here!
Announcement
Welcome back to ImportAtlanta. We are currently undergoing many changes, so please report any issues you encounter with the site using the 'Contact Us' button below. Thank you!