# Power and Cabs

Discussion in 'Amps and Cabs [BG]' started by Pre EB, Aug 7, 2002.

1. ### Pre EB

Mar 15, 2002
Denton, Tx
Ok, I'm going to ask again cause I didn't quite understand any of the answers I got..... if I run two cabs off of the same channel of my amp, how is the wattage distributed? Is it equally among the number of speakers combined (4-10s + 1-15), or number of cabs? Would it be 1100w divided by five speakers or 550w into each cab.
Joe

2. ### Scutterflux

It depends on the ohms of each cabinet. for example if u have 2 8 ohm cabs than the power is distributed equally, but if one is 8, and the other is 4 than the 4 ohm cab will get 2x the power. also the efficiency will determine the volume the cab creates, but you didn't ask about that!

3. ### Pre EB

Mar 15, 2002
Denton, Tx
They are both 8ohms. That's what I want to do- increase the volume of my rig by adding a 15 to my Acme. It doesn't make sense to me, though. Why would it be distributed equally when both cabs are run from the same channel? Wouldn't that, in effect, make it like a Boogie powerhose 1000? You know, the one with 4-10s and a 15 in one cab?

4. ### Scutterflux

I don't know how the 1000 works, but maybe you could shed some light on it. If you already have 2 8 ohm cabs, and run both of them off the same channel they will get the same amount of power. If you are getting a 3rd 8 ohm cab(is this right?) and run 2 off 1 channel, and 1 off another, than in theory they should all still get the same amount of power, because one channel will have a 4 ohm load (2 8 ohm loads make a 4 ohm load.), and the other will have an 8 ohm load. Theoretically they will all get the same amount of power, because the channel with a 4 ohm load will be able to put out twice the power of the channel with the 8 ohm load. But in reality the 8 ohm load will probably recieve an unnoticable amount of power more. An ohm is a mesure of resistance. More electrons can flow more easily through a speaker of less ohms. An amp can distribute more electrons through a speaker of less ohms, and therfore can create more power with a lighter load(less resistance(ohms)). In your case the ohms are measured for the cabinet as a whole, not each induvidual speaker.