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different ohms


saqle

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A simple question. Is it alright to use two cabs with different ohm´s. Like one 8ohm and one 16 ohm.

This would make 5.33ohms right, ok this is gonna sound stupid...is that more that 4ohms(with a amp 4ohm.min.)I know how to count i just get confused about ohms.

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Originally posted by saqle:

How about using two(1x15) 8ohm 120watt connected= 16ohm 240watt

& one 16ohm 300watt.

The 3 cabs together total 8ohm.

Would that work fine with my amp thats a 4ohm(ashdown)575watt.

i dont think it works like that. I think you might end up with 4ohms. But I may be wrong.

 

see 1 8Ohm + second 8Ohm = 4Ohm + ??? im confused now

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you'd have to get inside the cabinet to wire the two 8 Ohm cabinets in series to make them 16 Ohms total impeadance. if you know how to do that, you can make it so.

 

you may still have issues about some cabs being louder than others, but i guess if you're using three cabs, that may be a moot point.

 

phil6006 -- to quote jack black in high fildelity, "you can be, and are, wrong." don't worry about it, though. most people get all tripped up on impedance and power ratings for their cabinets.

 

as i wrote above, you can change the internal connections of two cabinets so that they are connect in series instead of parallel. it would be possible that way to use two 8 Ohm cabinets with a 16 Ohm cabinet and get a total impedance of 8 Ohms.

 

robb.

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Originally posted by robb.:

[QB]you'd have to get inside the cabinet to wire the two 8 Ohm cabinets in series to make them 16 Ohms total impeadance. if you know how to do that, you can make it so.

Oh, no i dont know how to do that. I didnt know it was that complicated.

 

Would the two 15" speakers still be louder since they are originally 8ohms(lower that the 16ohm)and are they in risk of getting blown because of the lower wattage.

 

Thanks for your replies.

phil6006, Im also just now trying to learn a little more about this.

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Originally posted by saqle:

Would the two 15" speakers still be louder since they are originally 8ohms(lower that the 16ohm)and are they in risk of getting blown because of the lower wattage.

because you have two speakers, i'm guessing they'll be louder.

 

[simplification]of the three speakers, the two 15s would get half the power, and the 16 Ohm cabinet would get the other half. so each 15" cabinet is getting 25% of what the amp is creating.

 

in any case, i wouldn't worry about overpowering any of your speakers with this amp. i can explain it if you want.

 

robb.

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