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  1. #11
    And all this is exactly why I recommend matching to the RMS rating of the speakers... If you need more overall volume in your rig, then you need another amp, and more speakers, or a bigger amp with speakers that can handle more power. The actual SPL's that are gained by having any "extra" power are minimal, and the risks outweigh the benefits.

    That said, pros can get away with lots of things, because they are careful. the average MI-grade gear and the expected user of such gear is most likely going to blow his stuff up..

    Please, refrain from using the term 'Underpowered' .. It doesn't happen. Having a smaller amp will blow your speakers because the clipped signal may cause the amp to produce a peak of many times the max output rating of an amp. SO the term is, and always will be 'over powering'.... Drive a 500 watt box with 20 watts of good clean *nominal* signal, without driving the amp into thermal issues, will last for ever. so you cannot underpower a speaker....

    Seriously. DOn't believe the Sweetwater sales hype.

  2. #12
    New Member
    Join Date
    May 2010
    ive got a profile bridgeable amp ,but need to know the use of the colored wires

  3. #13
    guys, can explain to me how ohms work with the speakers?

  4. #14
    Resistance is measured in Ohms. Typically 4 or 8 for a speaker box. 'How they work' is really more a matter of how they work/affect the amp output and how they interact when multiple speakers are in-line on the same amp output .

    Say you have two 8Ohm speaker cabinets and you 'daisy chain' them on one amp output (plug the speaker cable from the amp to one cabinet and from that cabinet to the second cabinet), since most speaker jacks are wired in Parallel, the resistance at the amp would be 4Ohms.(called the 'Load')

    Inside of speaker cabinets, serial wiring may be used. This is often seen in guitar speakers. 2 8Ohm speakers in series will have a resistance of 16Ohms.

    Most amps are rated down to a certain 'Load'. This means that if the amp indicates a minimum load of 4Ohms, you cannot hook up speakers with a total resistance (LOAD) that is lower than the rated limit without some serious issues.

    Not to complicate the matter, but the resistance rating on a speaker is not a 'set' or 'firm' number, it is a constantly changing resistance that is dependent on the frequency of the material that is being reproduced.

    For the technical explanation of Ohm's Law, see

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