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    Please can someone answer this?

    i have asked this question numerous times and no one has answered me..... at least not clearly.

    say you have a kicker amp 2ch (50RMSX2 @4ohms) (100RMSX2 @ 2ohms)(bridgeable 400RMSX1@4ohms stable at 4 ohms)

    now if you bridge a speaker thats 4 ohms does the resistance get split between the two speaker terminals making it a 2 ohm speaker load? i read this in the jlaudio gain tutorial......

    or do only some amps have this problem(or feature?)

    Please someone just tell me.....



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    Re: Please can someone answer this?

    What speaker? Is it a sub? Is it dual voice coil? When u bridge an amp, you just take the two outer outputs. say its +-+- you would take the first possitive and the last negative. Then it simply becomes a mono amp. Just look up mono wiring diagrams.





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    Re: Please can someone answer this?

    ok i know how to wire the speakers and they have a final impedance of 4 ohms (2 8 ohms SVC wired in paralel) but i read in that tutorial though that when you bridge the amp the impedance is split between the two channels making a 4 ohms wired speaker to 2 ohms....



    '99 Toyota 4Runner
    _____________________________Condition_____Price Paid
    H/U: Pioneer Premier DEH-630 ____(Installed)_____$100 Used
    Front: Orion P6.2 Comps_________(Installed)_____$150 New
    Rear: Alpine Type R 5.25 Comps_ (Not Installed)___$50 New
    Subs: (1) 10" Alpine Type X Sealed. (Installed)____$50 New
    Sub Amp: Hifonics BX1500D ________(DOA)______$80 Used
    Comp Amp: Orion 8004 100 RMS X 4 (Installed)____$230 New



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    Re: Please can someone answer this?

    i am sorry if i sound like a newbie but i have a amp thats supposed to be stable at 4 ohm bridged but when i hook it up it take like 5 minutes for it to go into safe mode even with the gains all the way down.......



    '99 Toyota 4Runner
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    Subs: (1) 10" Alpine Type X Sealed. (Installed)____$50 New
    Sub Amp: Hifonics BX1500D ________(DOA)______$80 Used
    Comp Amp: Orion 8004 100 RMS X 4 (Installed)____$230 New



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    Re: Please can someone answer this?

    Something is wired wrong.




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    Re: Please can someone answer this?

    u still havent said what amp and subs





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    Re: Please can someone answer this?

    Quote Originally Posted by Norcalracer283
    u still havent said what amp and subs
    yes, that would help out alot




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    Re: Please can someone answer this?

    The amp spilts the load and it recognizes the 4 ohm mono load as 2 separate 2ohm loads, as if it were running two 2 ohm drivers in stereo. Hence the supposed quadruple in power.



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    Re: Please can someone answer this?

    Im planning on gettin a 1 L7 and a audiobahn that handles 800 x 1 at 4 ohm. If the sub im getting says it is a dual vc, how do i wire it so it works witht he 4 ohm in mono?




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    Re: Please can someone answer this?

    im not familiar with the L7's ohm ratings.. nonetheless this should cover u

    http://jlaudio.com/tutorials/wiring/index.html




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    Re: Please can someone answer this?

    X2 on that link.




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    Re: Please can someone answer this?

    Quote Originally Posted by Tirefryr
    The amp spilts the load and it recognizes the 4 ohm mono load as 2 separate 2ohm loads, as if it were running two 2 ohm drivers in stereo. Hence the supposed quadruple in power.
    OK YOU HIT THE NAIL ON THE HEAD. i misunderstood what i read. i thought it meant that the 4 ohm gets split to a single 2 ohm load(not 2ohm per channel stereo)

    BTW the speakers are in my sig.. but thanks a ton i was so confused....



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    _____________________________Condition_____Price Paid
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    Rear: Alpine Type R 5.25 Comps_ (Not Installed)___$50 New
    Subs: (1) 10" Alpine Type X Sealed. (Installed)____$50 New
    Sub Amp: Hifonics BX1500D ________(DOA)______$80 Used
    Comp Amp: Orion 8004 100 RMS X 4 (Installed)____$230 New



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    Re: Please can someone answer this?

    Quote Originally Posted by themainjam
    OK YOU HIT THE NAIL ON THE HEAD. i misunderstood what i read. i thought it meant that the 4 ohm gets split to a single 2 ohm load(not 2ohm per channel stereo)

    BTW the speakers are in my sig.. but thanks a ton i was so confused....

    Actually all of that was mostly wrong. Impedence/resistance is NOT set by the amp. The speaker sets the resistance or OHM load going to the amp, depending on how the speaker was made to run (2 ohms, 4, 6, 8, 16 etc..). By bridging your amp, no resistance or OHM load is set until you hook up a speaker. In your case you'll get a 4 ohm load. No amp splits resistance... thats just silly. Bridging means you're combining two channels into one hence the term MONO.

    Your amp going into protection mode is probably because of a bad ground, or your wiring in parallel.. not in series. Making the final load less than 4 ohms.
    Last edited by johnecon2001; 09-30-2004 at 04:11 PM.




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    Re: Please can someone answer this?

    Quote Originally Posted by johnecon2001
    Actually all of that was mostly wrong. Impedence/resistance is NOT set by the amp. The speaker sets the resistance or OHM load going to the amp, depending on how the speaker was made to run (2 ohms, 4, 6, 8, 16 etc..). By bridging your amp, no resistance or OHM load is set until you hook up a speaker. In your case you'll get a 4 ohm load. No amp splits resistance... thats just silly. Bridging means you're combining two channels into one hence the term MONO.

    Your amp going into protection mode is probably because of a bad ground, or your wiring in parallel.. not in series. Making the final load less than 4 ohms.

    And when in mono mode each channel is still being driven as if it were seeing a 2 ohm load. Thank you very much. Now if it were a final load of 8 ohms in mono, the amp would in effect be seeing 4 ohms per channel. I am NOT wrong.



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    Re: Please can someone answer this?

    Quote Originally Posted by johnecon2001
    Actually all of that was mostly wrong. Impedence/resistance is NOT set by the amp. The speaker sets the resistance or OHM load going to the amp, depending on how the speaker was made to run (2 ohms, 4, 6, 8, 16 etc..).
    Correct

    Quote Originally Posted by johnecon2001
    By bridging your amp, no resistance or OHM load is set until you hook up a speaker.
    Still correct

    Quote Originally Posted by johnecon2001
    In your case you'll get a 4 ohm load. No amp splits resistance... thats just silly. Bridging means you're combining two channels into one hence the term MONO.
    Right...it's still a 4ohm final load. But each channel on the amp will carry ("see") half of that load....so each channel would "see" a 2ohm load. Did ya ever notice it was kinda odd how the 4ohm mono rating was the sum of the power output per channel at 2ohm?? Think there is a reason for that?? Yes, there is a reason for that.....and it's because each channel essentially has a 2ohm load on it.




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