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OHMS and watts ???

Discussion in 'Amps and Cabs [BG]' started by Turlu, Nov 21, 2001.

  1. Hi,

    I know a lot of stuff about Basses but I admit that regarding the Amps I have very limited knowledge.

    Anyway, I just bought a Peavey T-Max Head rated at 350 watts at 4 ohms.

    So, my question is: what would be the best Cabinet / OHMS to suit the Head?

    Briefly, can someone explain me the OHMS once and for all?

    I know you can not have cabinet with lower OHMS resistance than the Head but that`s it.

    What happens when the head has 4 OHMS and the Cabinet has 8 OHMS for instance ?

    Let me know. I am sure I am not the only one with this question
  2. JMX

    JMX Vorsprung durch Technik

    Sep 4, 2000
    Cologne, Germany
    Resistance and Impedance are measured in Ohms.

    Impedance is the electronic resistance of an electronic circuit with alternating current (AC), e.g. a speaker.

    In a direct current (DC) circuit it's called resistance.

    The higher the impedance of a cab is, the less power you'll get from the amp and vice versa.
    Higher impedance is no problem for the amp, but if the impedance is too low, you can damage the amp.

    Usually you get the most power with a 4 Ohm load, or 2 Ohm with some newer amps.
    If you use a 8 Ohm cab instead of 4 Ohm, you'll roughly get 30-40% less power.

    The Peavey will give you around 200W with a 8 Ohm cab.