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[Peter Z Collins]

Anyone know the power rating in amps for the Yamaha DBR12 speakers and the DXS12 MKII Sub ?

I am trying to find a suitable AVR and conditioner

[Mac Kerr]

I am trying to find a suitable AVR and conditioner

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Mac
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[Lyle Williams]

Anyone know the power rating in amps for the Yamaha DBR12 speakers and the DXS12 MKII Sub ?

I am trying to find a suitable AVR and conditioner

Why would you do that?  Don't they both have autoranging switched-mode power supplies?

[Chris Grimshaw]

The DBR12 pulls 74w when run up to 1/8th average power. ie, just clipping a signal with a 9dB crest factor.
The DXS12 MkII pulls 100w under the same conditions.

I'll leave it up to the reader to determine whether those conditions are realistic or applicable - I'm not willing to spoon-feed all the answers when finding the numbers was as easy as searching "[model] manual" and scrolling to the correct part.

Chris

[Jean-Pierre Coetzee]

I will assist some more with a formula.

P=I*E

P = Power(watts)
I  = Current(amps)
E = Voltage(volts)

Now you need to figure out basic algebra and how to use a calculator

[Mike Sokol]

I will assist some more with a formula.

P=I*E

P = Power(watts)
I  = Current(amps)
E = Voltage(volts)

Now you need to figure out basic algebra and how to use a calculator

Here's the Ohm's Law chart which is what all my basic audio electronics students learn.

[Stephen Swaffer]

Just a pet peeve of mine-why is that chart easier to learn than:

P=I*E
E=I*R

and use basic algebra?

[Bob Taylor]

I will assist some more with a formula.

P=I*E

P = Power(watts)
I  = Current(amps)
E = Voltage(volts)

Now you need to figure out basic algebra and how to use a calculator

Actually this gives you Volt Amps.

Now the Electrical Engineer side of me wants to toss in that this actually only works with DC to get to Watts. When you look at Watts in AC, It's Volts times Amps times Power Factor. Power Factor is the Cosine of the Angle between Volts and Current. Capacitive circuits will lead in Power Factor, (Current is ahead of Voltage) Inductive Lags in Power Factor.(Voltage ahead of Current) This is why Generators have 2 power ratings, KVA and Watts. Don't exceed either to live long and prosper.

Speakers are Reactive, Meaning they can have Inductive or Capacitive traits. Just measuring the Voltage, and using that across the specified Impedance may be close, but there is much more happening in that circuit.

AC power is a different animal than DC, Just keep that in mind as terms are tossed freely around. Current times Volts will get close, but could also kill you for not knowing there is a difference.

Bob T

[Lyle Williams]

Start with the fundamental question.  Why does the OP want an AVR/conditioner on autoranging/switched-mode supplies?

[Scott Holtzman]

Actually this gives you Volt Amps.

Now the Electrical Engineer side of me wants to toss in that this actually only works with DC to get to Watts. When you look at Watts in AC, It's Volts times Amps times Power Factor. Power Factor is the Cosine of the Angle between Volts and Current. Capacitive circuits will lead in Power Factor, (Current is ahead of Voltage) Inductive Lags in Power Factor.(Voltage ahead of Current) This is why Generators have 2 power ratings, KVA and Watts. Don't exceed either to live long and prosper.

Speakers are Reactive, Meaning they can have Inductive or Capacitive traits. Just measuring the Voltage, and using that across the specified Impedance may be close, but there is much more happening in that circuit.

AC power is a different animal than DC, Just keep that in mind as terms are tossed freely around. Current times Volts will get close, but could also kill you for not knowing there is a difference.

Bob T

Bob, have you ever heard ELI the Iceman pneumonic for current lead/lag?

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