Closed Thread
Results 1 to 4 of 4

Reload Thread: Can a crossover change the ohms of a speaker?

  1. #1
    ace_800's Avatar
    ace_800 is offline CarAudio.com Veteran



    Join Date
    May 2004
    Location
    Lajes Field, Azores, Portugal
    Age
    33
    Posts
    5,213
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    428 Post(s)

    Can a crossover change the ohms of a speaker?

    OK kind of a strange senario. I have a set of Boston Pro60 running off a Zapco 360.4. Once in a while the amp would go into protect. When the right rca was not plugged in it would not go into protect. Just touch the RCA to the input and it would go back into proctect for a few second at a time then turn back on for a second. I was told to send the amp in for repair, came back clean. No problems. Reinstalled it, worked great for about 2 months, started up again. I check the ohms from the speakers and coming out ot the crossover. Left side- tweeter @6.0, [email protected] at the crossover the same, and at the output to amp @3.5 roughly. Right side- Tweeter @6.0, speaker @3.4-3.6, at the crossover same. Heres the kicker. When the amp was going into protect I checked the crossovers showed the same at the inputs from the spakers and tweeters, but the right crossover output was fluctuating from under 1ohm to 3.6ohms. When it was working normally the ohms showed around 3.5ohms. So I guess the crossovers going bad???



    Current set up: Island bombed out 92 mazda 626. Stock rust bucket

    66 Pontiac GTO, modified stock radio, Crossfire CFA 302, Kicker KS6.2's in the front kicks, Crossfire CFA 452 for the 6x9's I need.





  2. #2
    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: Can a crossover change the ohms of a speaker?

    Sounds like the case.



    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.

  3. #3
    Speedyd718's Avatar
    Speedyd718 is offline G.O.M.A.B.



    Join Date
    May 2004
    Location
    Cincy, OH by way of Cleveland, OH
    Posts
    1,206
    Post Thanks / Like
    Images
    10
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Can a crossover change the ohms of a speaker?

    hey man my zapco did the same exact thing when i had a set of comps bridged to it. i think that the amp is sensitive to running below that 4ohm bridged resistance. that's all i could come up with when talking to zapco (i sent mine back too).



    Setup in the Wagon
    GONE!!


  4. #4
    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: Can a crossover change the ohms of a speaker?

    BTW, were you checking the resistance of the speakers at the crossover while still hooked to the powered on amp? If so, that is what was causing the variation in resistance. Also, resistance isn't an accurate indication of amplifier load. 3.4 ohms measured with a DC ohmeter will most always present an amp with a load in the 4-6 ohm range.



    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.

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