iestynt1 Posted June 2, 2017 Share Posted June 2, 2017 Hi all, I am interested in anyone's experience of plugging an amp into a 8ohm and a 4ohm speaker at the same time. The ampeg pf 500 delivers the 500w at 4 ohms but it came with the 210he cab which gives 450w at 8 ohms. I'm interested to know if there would be any issues plugging in a 4ohm and an 8 ohm cab similaneously? I assume no, but always worth asking Thanks all Quote Link to comment Share on other sites More sharing options...
outsider70 Posted June 2, 2017 Share Posted June 2, 2017 Nope, dont do it. Either use two 8 Ohm cabs, or one 4 Ohm cab. Quote Link to comment Share on other sites More sharing options...
paul_5 Posted June 2, 2017 Share Posted June 2, 2017 Using a 4Ω cab and an 8Ω cab at the same time (assuming that you're using both speaker outputs on the amp) would give you an overall impedance of 2.6Ω and would blow the amp. If you're daisy-chaining one cab into another from [i]only one[/i] of the speaker outputs will give you an impedance of 12Ω (summing the cab impedances together), so you'd move more air, but the power output of the amp would be reduced. Quote Link to comment Share on other sites More sharing options...
barkin Posted June 3, 2017 Share Posted June 3, 2017 [quote name='paul_5' timestamp='1496436357' post='3311502'] If you're daisy-chaining one cab into another from [i]only one[/i] of the speaker outputs will give you an impedance of 12Ω (summing the cab impedances together), [/quote] No, unless there's an unusual arrangement with the speaker leads/wiring, it'll be a parallel connection (2.6 Ohm) just the same. Quote Link to comment Share on other sites More sharing options...
paul_5 Posted June 3, 2017 Share Posted June 3, 2017 Ah yeah, you'd need to go positive from the 1st to negative on the 2nd cab... As you were. Quote Link to comment Share on other sites More sharing options...
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