7/6/2023 0 Comments Gallien krueger 600 backline![]() ![]() The GKBL has two outputs wired in parallel. There are hundreds of pages of Tube amp information on my library page. Two 8 ohm 410s, (one plugged into each jack) would yield a 4 ohm load. ![]() This would also be the same as if you daisy chained the cabs, and used only ONE output jack. You would then have the full 300W capability of your amp, pushing eight 10" speakers. This will still use all 300W of power from the amp, but you will not be pushing as much air, as you are only driving four 10" speakers, as opposed to eight of them.Ĭonversely, you may only have an 8 ohm 410. This will not utilize the amps 300W capabilities, as you are doubling your load (or your impedence). Now you're amp will only generate about half (or a little more) of it's 300W cabability. So NOW you will have 150-200W driving 4 10" speakers. Now, I'm not saying that watts equal volume here, but TYPCALLY, if we are comparing identical cabs and speakers, with the only difference being impedence, then you will get a perceivably higher volume out of the 4 ohm cab, than you will from the 8 ohm cab. Now, you might be wondering which sounds louder: four 10" speakers (4ohms) running at 300W RMS, or eight 10" speakers (8 ohms) running at 150-200W RMS. Well, the eight 10" speakers will be pushing more air, but you won't be realizing the full potential of your amp.ĮDIT: Ok, I just re-read the whole thread 3 times, and I think I finally understand what you were trying to say. To answer your question, you will be fine running only ONE cab, through ONE output, as long as the minumum impedence doesn't drop under 4 ohms. The higher your cab's impedence is, the less watts you'll be working with. In order to maximize your amp, your final impedence should be 4 ohms. Not true based on your assumptions, the most important being "identical" cabinets and speakers. Given the same sensitivity, volume displacement, you will not notice a difference in volume.Īs you probably know, volume is perceived in a logarithmic fashion. what this means is that even seemingly large changes in wattage represent fairly small changes in volume output, all other factors being equal. What you may not know is that it takes a 10dB increase in power to equal a doubling of volume. That means that a 3dB change in power represents a much smaller change in volume - one that is perceptible, but not significant in most cases.Īnd it just so happens that the 8O power of the backline 600 is 2.2dB below the 4O power:Ģ.2dB is not likely to sound louder, though it might sound more dynamic or better. ![]()
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