Closed Thread
Results 1 to 11 of 11

Reload Thread: Wiring effect on amps -- 1 ohm vs 4 ohms?

  1. #1
    Roland's Avatar
    Roland is offline Senior VIP Member



    Join Date
    Dec 2012
    Location
    Atlanta
    Posts
    164
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Wiring effect on amps -- 1 ohm vs 4 ohms?

    Im just trying to understand amplifier and speaker realtion ship a little better.

    The amp has more power than what needed for the speaker.
    The amp is 1 ohm stable, i can wire it ether way 1 or 4 ohms and still achieve max watt rating of the speaker.
    Is there a benefit for the amp, (or the sub) in wiring the sub for 1 ohm or 4 ohms?

    Here's the example;

    (Precision Power PDX-10K)
    Amp output
    4 ohms: 3,700 watts x 1 chan.
    2 ohms: 6,100 watts x 1 chan.
    1 ohm: 6,100 watts x 1 chan.

    (Image Dynamics 12" Dual 2 ohm ID MAX V.3)
    Speaker Power Handling:
    Peak: 1800 watts
    RMS: 1000 watts
    Recommended Power Range: 200-1000 watts







  2. #2
    Falcons's Avatar
    Falcons is offline that **** i dont like



    Join Date
    Jan 2011
    Location
    Albion, New York, United States
    Posts
    5,224
    Post Thanks / Like
    Mentioned
    19 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    More efficient the higher ohm rating you go.



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

  3. #3
    Roland's Avatar
    Roland is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2012
    Location
    Atlanta
    Posts
    164
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    Quote Originally Posted by falcons03079313 View Post
    More efficient the higher ohm rating you go.
    So 4 ohms would use less amps from the charging/battery system to produce the same sound?




  4. #4
    Sonic.'s Avatar
    Sonic. is offline Senior VIP Member



    Join Date
    Jul 2012
    Location
    Toronto
    Posts
    455
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    Higher the ohm load, more efficent the amp.

    Higher the ohm load, less strain on your electrical system. I=V/R , assuming the voltage is constant, higher the resistance lower the current.

    For the sub it self, it does not matter, but what will matter is how it effect the rest of the system, hence, if your amp have the capacity to give the sub adequate power at the higher ohm load, overall it would be better.




  5. #5
    Roland's Avatar
    Roland is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2012
    Location
    Atlanta
    Posts
    164
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    Cool, sorry i may be a little slow at this and thanks for your patients.

    So if i understand this right.
    100 db of tone X, from our speaker =/needs 100 watts at the speaker. (regardless of ohms...)?

    So,
    At 1 ohms the amp would use 200 watts from the electrical system to deliver 100 watts to the speaker. = 50% efficient
    At 4 ohms the amp would use 150 watts from the electrical system to deliver 100 watts to the speaker. = 75% efficient.




  6. #6
    DDtC's Avatar
    DDtC is online now High Output SQ



    Join Date
    Apr 2011
    Location
    Va Beach, Va
    Age
    33
    Posts
    7,392
    Post Thanks / Like
    Mentioned
    47 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    You might want to read the specs on that amp again. Also you are trying to run that power and don't even know the basics? Good luck



    • 2010 Scion tC
    • Pioneer DEH-80PRS
    • JL 450/4v2 Active (Mid range, tweeters) JL 300/2v2 (Mid bass) DD M4(Subs)
    • Hertz HV 165XL
    • Hertz HT28
    • JL ZR800
    • 2 x DD 9512i
    • Singer 300 amp 15.1v bypass, 3 XS D3400s
    • Viper 5701 with Smart Start

  7. #7
    Join Date
    Oct 2011
    Location
    ATL.
    Posts
    222
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    how many of those subs are you tring to hook up to the amp??? lots of power and money if you are not going to use all that wattage.. btw, glad to see some more ATL rep on here!




  8. #8
    Roland's Avatar
    Roland is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2012
    Location
    Atlanta
    Posts
    164
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    LOL,

    DCTC, It is a hypothetical question. I'm trying to understand the theory better. Get some clarity on the subject.

    A lot of folks say that more resistance (higher ohm number) is more efficient. Efficiency has a lot of different meanings, I was trying to clarify what others mean by when they say that?




  9. #9
    neo_styles's Avatar
    neo_styles is offline AKA Pop Twidget



    Join Date
    Sep 2012
    Location
    Porter Ranch, CA
    Age
    28
    Posts
    3,581
    Post Thanks / Like
    Mentioned
    50 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    You're more efficient and have a better chance of prolonging the life of the amp and your electrical system running at 4 ohms vs 1. People like 1 ohms because it means you can get more power for less dollar nine times out of ten.



    Deck: JVC KD-A95BT
    Speakers: PHD FB mid, JBL MS tweets
    Amps: Boston Acoustics GT-2125, Zed Minotaur III (x2)
    Sub: 10" SSA ICON, IA Death Penalty 18" (coming soon)
    Starr Mountain Sound Nuthugger #2 (I'm a #2 lol)
    dcarcustoms Nuthugger #1
    Spotify: http://open.spotify.com/user/neo_styles/playlist/6t9ru42j0wbEsuo4bXqXD8
    PROUD MEMBER OF TEAM VERTEX

  10. #10
    trumpet's Avatar
    trumpet is offline Supporting Vendor trumpet is a Supporting Member of the forum!

    trumpet is a Supporting Vendor of the forum!

    Join Date
    Jan 2011
    Location
    Langdon, ND
    Age
    33
    Posts
    4,399
    Post Thanks / Like
    Mentioned
    75 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    Higher efficiency means the amplifier produces less heat. Heat from your amplifier is wasted power.

    For your example, if you really have the charging system upgrades to handle that amplifier you definitely want to wire the sub for 4 Ohms. As it stands that is way too much amp for that sub.




    Small town service, family owned and operated. See our new mobile friendly web site at www.513electronics.com
    Home to CDT Audio's Systems Design Specialist
    Our CDT Audio dealer store, Clarion,_JBL,_Pioneer,_Precision_Power,_RE_Audio,_DB Drive,_Metra,_T-Spec, perfect fit speaker kits for your vehicle
    My system: Pioneer AVH-4000NEX, JBL MS-8, Clarion XC6610 x 2, CDT 6.7"/4"/1.1" in the front doors, 4"/1.1" center channel, QES-1220 12" x 2, Clarion SRG-1622R rear fill

  11. #11
    Roland's Avatar
    Roland is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2012
    Location
    Atlanta
    Posts
    164
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Wiring effect on amps -- 1 ohm vs 4 ohms?

    Wow, thanks Neo and Easy Way, that is what I was tring to find out. If one way or the other was better to minimize load on a alternator...

    And as far as speakers are concerned 1 watt to db ratio is 1 watt no matter how its wired.

    I probably should have found a better example. Thanks again




Closed Thread

Similar Threads

  1. Replies: 2
    Last Post: 08-28-2009, 02:15 AM
  2. Wiring help on amp and subs
    By mrmugen in forum Wiring, Electrical and Installation Help
    Replies: 8
    Last Post: 01-27-2009, 07:52 AM
  3. Help on wiring ohms on amp for subs
    By BoneStockSystem in forum Subwoofers
    Replies: 2
    Last Post: 02-11-2004, 06:57 PM
  4. Help on wiring ohms on amp
    By BoneStockSystem in forum Wiring, Electrical and Installation Help
    Replies: 1
    Last Post: 02-06-2004, 09:39 AM
  5. Wiring Job on Amp
    By AkumaSG in forum Amplifiers
    Replies: 1
    Last Post: 08-09-2002, 11:58 PM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts

1e2 Forum