patrikmarky Posted March 15, 2013 Share Posted March 15, 2013 Need help...please ..I have a gallien fusion 550 amp and I'm putting it through a genzbenz 2 x 12 at 4 ohms..have just cooked a speaker and replaced with a eminence 400 w...thinking would give a.little more headroom..I've Been told putting an underpowered amp through a bigger cab can do as much damage as to bigger amp through smaller cab..I was under the impression you would damage the amp if you had the earlier set up... Quote Link to comment Share on other sites More sharing options...
BobVbass Posted March 15, 2013 Share Posted March 15, 2013 no, you just won't be able to driver the unit to it's optimum that's all, wont damage the speaker... Quote Link to comment Share on other sites More sharing options...
icastle Posted March 15, 2013 Share Posted March 15, 2013 [quote name='patrikmarky' timestamp='1363358683' post='2011790'] Need help...please ..I have a gallien fusion 550 amp and I'm putting it through a genzbenz 2 x 12 at 4 ohms..have just cooked a speaker and replaced with a eminence 400 w...thinking would give a.little more headroom..I've Been told putting an underpowered amp through a bigger cab can do as much damage as to bigger amp through smaller cab..I was under the impression you would damage the amp if you had the earlier set up... [/quote] No mate, it's a much repeated urban myth. Quote Link to comment Share on other sites More sharing options...
SteveO Posted March 15, 2013 Share Posted March 15, 2013 The Amp`s power rating is the theoretical maximum that it will produce, in your case 500W driving 4 ohms and 350 driving an 8 ohm cab. At the other end of the cable is the Cab. Its power rating is the theoretical amount of watts that it can handle before it gets damaged. In theory, Cab power greater than amp power is good. Amp power greater than cab power is risky. In practice any mix is OK, but common sense is required. You can generaly hear a cab distorting before it gets damaged. I regularly run my 1000W amp through a 250W cab when we`re playing small gigs, but I wouldn`t turn it up to 10. Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted March 15, 2013 Share Posted March 15, 2013 [quote name='SteveO' timestamp='1363360224' post='2011820'] Amp power greater than cab power is risky. [/quote] In my experience only if the person using the amp is a tool. I've driven cabs rated at a couple of hundred watts (as little as 120w) with amps that can deliver 1000 watts+ (presently driving a 300w cab with an amp capable of 1600w RMS)... with absolutely no problem. If you are silly enough to connect a high power amp to a low powered cab, dial the gains on full and whack the strings then the result will be unpleasant but then refer back to my first point; you would be a tool to do that! Quote Link to comment Share on other sites More sharing options...
patrikmarky Posted March 15, 2013 Author Share Posted March 15, 2013 thanks all .. you pretty much mirrored my thoughts ..... doubts were there simply because of the advice a " specialist speaker supplier " who will remain nameless gave me.... Quote Link to comment Share on other sites More sharing options...
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