My receiver is 85w into 6 channels (Yamaha-to be upgraded quickly). If my R+L are 5 ohms, my center is 6 ohms, and my three surrounds are 8 ohms; am I OK ? As I prepare to buy a new receiver what do I look for in terms of impedance/resistance ? Just more power ? I have been looking at the Yamaha RXV-1800. A wise choice ? Denon AVR-2808 ?
Impedance/resistance
- Thread starter Mark B
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Mark, assuming it's for your Montage set-up you should be fine, their sensitivity is 90db, remember the 5ohm figure is a nominal one.
On the subject of receivers (I too am gathering info for replacing one in a secondary system), my current favorite is the Integra DTR 7.8. It is well within the price range of the Yammie you mentioned, maybe even a couple of $$ cheaper. I believe it to be superior to both the Yammie and Denon in the area of dynamic headroom.
On the subject of receivers (I too am gathering info for replacing one in a secondary system), my current favorite is the Integra DTR 7.8. It is well within the price range of the Yammie you mentioned, maybe even a couple of $$ cheaper. I believe it to be superior to both the Yammie and Denon in the area of dynamic headroom.
Impedance is (simplified) the opposition to a varying AC current whereas resistance is the opposition to a non-varying AC or DC current. Parallel impedance is given by the equation (1/X + 1/X + 1/X) ad infinitum /1.
In your instance the parallel impedance would be less than one ohm (1/5 + 1/5 + 1/6 + 1/8 + 1/8 + 1/8)/1 but since each amp module drives its own speaker you don't have to worry about it:music:
In your instance the parallel impedance would be less than one ohm (1/5 + 1/5 + 1/6 + 1/8 + 1/8 + 1/8)/1 but since each amp module drives its own speaker you don't have to worry about it:music:
