doubling amp resistance

Is this amp OK?
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Rich4349
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Joined: Wed Jul 30, 2008 10:18 am
Location: Kankakee, IL

doubling amp resistance

#1 Post by Rich4349 » Sat Mar 25, 2017 9:39 pm

If an amp is rated for 2,4, and 8 ohms, will you harm it by running it at 16? Or running a 4 ohm amp at 8?
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

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dswpro
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Joined: Sun Oct 30, 2011 3:17 pm

Re: doubling amp resistance

#2 Post by dswpro » Sat Mar 25, 2017 10:35 pm

Running a higher impedance should not be a problem. There could be exceptions and I wasn't around during the hey day of large tube amps but a higher impedance load is usually OK. If you think about it, an open connector ( no load) has an extremely high (near infinite) impedance while a dead short has a zero impedance. Dead shorts and really low impedance loads cause more current to flow and can burn out parts or if you are lucky, only cause an amp to go into "protect" mode.

CoronaOperator
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Location: Medicine Hat, Alberta, Canada

Re: doubling amp resistance

#3 Post by CoronaOperator » Sun Mar 26, 2017 12:57 am

Tube amps are picky on the impedance. Solid state amps, the higher the impedance the happier they are, just don't go below the minimum or else they will overheat/over current and thermal out.
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