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Can my receiver power two kilpsch bookshelf speakers ?
I have a onkyo tx-nr 509 in my possession but im liking the RB-61 reference series bookshelves speakers from klipsch as my left and right speakers but don't know if my receiver will power them. will I need a bigger receiver. Clueless.
Amplifier and speaker wattage ratings are a subject of much controversy and misunderstanding. While it is true that more speakers are blown by underpowered amplifiers than over powered amplifiers, the main consideration for providing a definitive answer to your question depends on your listening habits. If you are the type of person who likes to blast music loudly enough for the neighbors to call the cops you will likely need a bigger amplifier or risk blowing the speakers. If you are more the type who will turn it down when it starts to hurt you ears you should be fine. Klipsch speakers, in general, are very efficient. These produce 95 dB @ 1watt. The Onkyo is rated at 80 watts into 8 Ohms. At 80 watts these speakers will produce sound pressure levels high enough for most people to be yelling "Turn it down!" Now, we aren't taking into account one very important factor: You state that you will be using these as left and right speakers implying that this is part of a surround system, most of which include a subwoofer. If so. That will limit the power going to the Klipsch speakers as the subwoofer will have the low frequencies directed at it. Almost without exception, modern subwoofers are active speakers - they have a built in amplifier. Most of the power is in the low frequencies - the frequencies the subwoofer handles. Lets put it this way: You flip in your Favorite Barry Manilow CD. Set the volume at about 3/4 the way up. By using the Klipsch speakers all by themselves they would receive a maximum of 80 watts. However with a subwoofer hooked up and the Onkyo's internal crossover filtering out the low frequencies, the Klipsch would only get a fraction of that. Lets say 55 watts and that is all the Onkyo would be putting out as the sub has it's own amplifier and will be doing most of the work. So, this is well within tolerances and probably plenty loud enough to have a cop knocking on your door and all the neighbors wondering why someone like you is listening to Barry Manilow in the first place.
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