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#1
10-28-2009, 01:32 PM
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8 ohm amp output into a 16 omn speaker?
Folks:
Will it hurt an amp with a 8 ohm output going into a 16 ohm speaker cab? Any thoughts? Thanks
__________________
"The truth lies somewhere in the middle" 
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#2
10-28-2009, 01:40 PM
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I have never had problems with a 2-fold mismatch, ie, 8 Ohm amp into a 4 Ohm load or into a 16 Ohm load. However, the amps that I have used in this way have all been modern amps, no vintage pieces.
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#3
10-28-2009, 02:07 PM
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Most tube amps will tolerate the speaker load being one impedance step higher but, as the speaker impedance is increased, the risk for flyback voltage arcing the output transformer and tube sockets also increases.
A lower than normal speaker impedance will stress the output tubes as they will try to produce more current than they are capable of delivering...but they are self current limiting so they can't deliver enough current to damage an output transformers primary winding. So, genearlly speaking, a lower than normal speaker impedance is generally considered safer than a higher than normal speaker load...but, one impedance step mismatch should be ok.
__________________
VaughnC'ism's: "Life is too short for a "B" rig" "I ain't pretty enough to be a poseur...so gimme a guitar with tone & feel and I'll deal with the rest" "Turn down the gain and play guitar, not amp"
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#4
10-28-2009, 07:08 PM
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I'm far from being an expert but I'm pretty sure you SHOULD NOT try this with a tube amp. It's ok with SS; you'll effectively cut your wattage in half - bfd. I've been told by very knowledgeable people to not miss match impedance on a tube amp.
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#5
10-28-2009, 07:37 PM
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Quote:
__________________
"Reality is an illusion albeit a very persistant one " Albert Einstein Was I crazy? I began to wonder, for such an appalling lack of perspective seemed near being just that.
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