Closed Thread
Results 1 to 13 of 13

Reload Thread: Is there any difference running 4 or 2 ohms?

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



    Join Date
    Jul 2007
    Location
    honolulu, hi
    Posts
    291
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Is there any difference running 4 or 2 ohms?

    i have an amp that can push 1000w rms in 2 and 4 ohms...is there any difference between the two?....will the amp perform better running in 2 or 4?.....(i mean better like run cooler, more efficient...ect.)....thanks guys.



    VEHICLE - 2003 Jaguar X-type 4 door Sedan
    HEAD UNIT - Alpine - IVA - W200 double din
    COMPONENTS - Pioneer - ts-c520prs x4
    SUBWOOFER - 12 Inch Image Dynamics Idmax d-4
    ENCLOSURE - 2.0 cu. ft. @ 30hz
    POWER - Optima Red Top Battery
    Optima Yellow Top Battery
    AMPLIFIERS - Alpine - PDX - 4.150
    Alpine - PDX - 1.1000




  2. #2
    funkdoktor's Avatar
    funkdoktor is offline Senior VIP Member

    Threadstarter


    Join Date
    Jul 2007
    Location
    honolulu, hi
    Posts
    291
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    nobody?



    VEHICLE - 2003 Jaguar X-type 4 door Sedan
    HEAD UNIT - Alpine - IVA - W200 double din
    COMPONENTS - Pioneer - ts-c520prs x4
    SUBWOOFER - 12 Inch Image Dynamics Idmax d-4
    ENCLOSURE - 2.0 cu. ft. @ 30hz
    POWER - Optima Red Top Battery
    Optima Yellow Top Battery
    AMPLIFIERS - Alpine - PDX - 4.150
    Alpine - PDX - 1.1000

  3. #3
    Join Date
    Jul 2007
    Location
    ELMHURST
    Posts
    32
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    doesnt the pdx put out its rated rms at anywhere between 1 to 4 ohms?




  4. #4
    bushtree's Avatar
    bushtree is offline CarAudio.com Elite



    Join Date
    Sep 2003
    Location
    San Diego
    Posts
    547
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Run it at 4ohm.. It will be easier on your electrical system..



    Ref: WkbdKid, djchinky, Polkat, wesl56, swc204, Colt9699, wcarson8911, WDLock, tdawg30, Bloodstalker999, Zeuslicious, ribeiro953, kberkel, latinplaya22

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

    Threadstarter


    Join Date
    Jul 2007
    Location
    honolulu, hi
    Posts
    291
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Quote Originally Posted by excluesiveonez View Post
    doesnt the pdx put out its rated rms at anywhere between 1 to 4 ohms?
    i only see 2ohm and 4 ohm ratings on the box so not too sure....i might have to check up on that.



    VEHICLE - 2003 Jaguar X-type 4 door Sedan
    HEAD UNIT - Alpine - IVA - W200 double din
    COMPONENTS - Pioneer - ts-c520prs x4
    SUBWOOFER - 12 Inch Image Dynamics Idmax d-4
    ENCLOSURE - 2.0 cu. ft. @ 30hz
    POWER - Optima Red Top Battery
    Optima Yellow Top Battery
    AMPLIFIERS - Alpine - PDX - 4.150
    Alpine - PDX - 1.1000

  6. #6
    reed dollaz's Avatar
    reed dollaz is offline CarAudio.com Veteran



    Join Date
    Apr 2007
    Location
    Ocala, FL
    Age
    29
    Posts
    2,750
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    the lower the ohm level is set the more voltage youll be pulling. but did you say it runs at 1000w at 2 AND 4 ohms? why is that? wouldnt it be something like 500 at 4ohm and 1000 at 2ohm. never seen an amp put out the same wattage on two different ohm levels



    S.O.U.N.D Q.U.A.L.i.T.Y

    HU: Eclipse CD4000
    Front stage amp: Eclipse EA2000
    EQ: Clarion 7 band. EQS
    Front components: Digital Designs DDC6.5
    Rear: Dayton DC 6 1/2 midbass IB
    Rear amp: TBD

    Refs; (SOLD to, Caraudio.com) sgdenny, coolahan, bow125106, killahbean, nismos14
    Boughtfrom; Bjfish, JimJ



  7. #7
    Qbenjamin's Avatar
    Qbenjamin is offline CarAudio.com Veteran



    Join Date
    Jan 2007
    Location
    London, UK
    Posts
    3,502
    Post Thanks / Like
    Images
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    3 Post(s)

    Icon32 Re: Is there any difference running 4 or 2 ohms?

    Quote Originally Posted by reed dollaz View Post
    the lower the ohm level is set the more voltage youll be pulling. but did you say it runs at 1000w at 2 AND 4 ohms? why is that? wouldnt it be something like 500 at 4ohm and 1000 at 2ohm. never seen an amp put out the same wattage on two different ohm levels

    Have you never heard of the following?

    JL slash series (1.5-4ohms same power)
    Phoneix Gold Xenon (1-4ohms same power)
    JBL BP series (2;4ohms same power)

    Normally lower ohm loads produce less efficiency. I dunno how that applies when talking about the above amps though.
    Last edited by Qbenjamin; 08-01-2007 at 09:59 PM. Reason: y




    Sold to Ref's: IonSQL; envengineer; BAD_MAYHEM; oxsign; dvrmstrng; corto; wong05tsx; mrdurden; dirtyg; Cheesemind; gladiator_jai; bumpincrv; nycking23; slikvik; Mr.Ronin_2U
    Traded with Ref's:: Spike_e; jnoel; Sundownz

    Stock H/U; AudioControl Lc6i; Alpine PDX-V9; Focal Components & Coaxials; DD 2510; Ported Enclosure; Second Skin Damplifier Pro

    What sounds good to you, may sound like crap to me...

  8. #8
    reed dollaz's Avatar
    reed dollaz is offline CarAudio.com Veteran



    Join Date
    Apr 2007
    Location
    Ocala, FL
    Age
    29
    Posts
    2,750
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Quote Originally Posted by Qbenjamin View Post
    Have you never heard of the following?

    JL slash series (1.5-4ohms same power)
    Phoneix Gold Xenon (1-4ohms same power)
    JBL BP series (2;4ohms same power)

    Normally lower ohm loads produce less efficiency. I dunno how that applies when talking about the above amps though.
    no. never heard of that. nice bit of info tho.



    S.O.U.N.D Q.U.A.L.i.T.Y

    HU: Eclipse CD4000
    Front stage amp: Eclipse EA2000
    EQ: Clarion 7 band. EQS
    Front components: Digital Designs DDC6.5
    Rear: Dayton DC 6 1/2 midbass IB
    Rear amp: TBD

    Refs; (SOLD to, Caraudio.com) sgdenny, coolahan, bow125106, killahbean, nismos14
    Boughtfrom; Bjfish, JimJ



  9. #9
    helotaxi's Avatar
    helotaxi is offline Kilroy was Here



    Join Date
    Dec 2003
    Location
    South Central (New Mexico that is...)
    Age
    39
    Posts
    8,933
    Post Thanks / Like
    Images
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    The PG Xenon amps in particular were MUCH more efficient into a 4 ohm load. All of those amps will be more efficient into the 4 ohm load. Simple Ohm's law stuff. Same power into a lower impedance means higher current on the outputs. Higher current means a higher voltage drop. Higher voltage dropped wih higher current menas more power lost as heat.



    Artificial Intelligence is no match for Natural Stupidity.

    Never underestimate the power of stupid people in large numbers.

    Life's tough...it's even tougher when you're stupid.

  10. #10
    velobard's Avatar
    velobard is offline Junior Member



    Join Date
    Jul 2007
    Location
    St Louis MO
    Posts
    10
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Technically speaking, you'll have less distortion at 4 ohms than 2 but I'd wager that the average person wouldn't hear the difference.




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

    Threadstarter


    Join Date
    Jul 2007
    Location
    honolulu, hi
    Posts
    291
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    thanks guys.



    VEHICLE - 2003 Jaguar X-type 4 door Sedan
    HEAD UNIT - Alpine - IVA - W200 double din
    COMPONENTS - Pioneer - ts-c520prs x4
    SUBWOOFER - 12 Inch Image Dynamics Idmax d-4
    ENCLOSURE - 2.0 cu. ft. @ 30hz
    POWER - Optima Red Top Battery
    Optima Yellow Top Battery
    AMPLIFIERS - Alpine - PDX - 4.150
    Alpine - PDX - 1.1000

  12. #12
    helotaxi's Avatar
    helotaxi is offline Kilroy was Here



    Join Date
    Dec 2003
    Location
    South Central (New Mexico that is...)
    Age
    39
    Posts
    8,933
    Post Thanks / Like
    Images
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Quote Originally Posted by velobard View Post
    Technically speaking, you'll have less distortion at 4 ohms than 2 but I'd wager that the average person wouldn't hear the difference.
    With a decent amp you'd have a time of it measuring the difference. The distortion should remain well below 1% in all cases.



    Artificial Intelligence is no match for Natural Stupidity.

    Never underestimate the power of stupid people in large numbers.

    Life's tough...it's even tougher when you're stupid.

  13. #13
    azbass's Avatar
    azbass is offline the salty ca.com mod



    Join Date
    Sep 2004
    Location
    Long Beach, CA
    Posts
    34,922
    Post Thanks / Like
    Images
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Is there any difference running 4 or 2 ohms?

    Quote Originally Posted by bushtree View Post
    Run it at 4ohm.. It will be easier on your electrical system..
    hows that..




Closed Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum