Speakers Having More Power than Reciever? - AVS Forum
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post #1 of 12 Old 08-12-2008, 12:05 AM - Thread Starter
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I have been reading a little bit on the forums here about damaging speakers if they are not getting enough power... The receiver "clips" or something like that... I am not exactly sure of what that means...

Here is the question I ask..

I am going to be getting an Onkyo TX-SR606 and was thinking about getting the Energy RC-50s as they are on sale for a pretty good price... The question I have is, is this going to be a problem?

The 606 outputs 90 watts RMS per channel... It looks like the RC-50's power is rated at 225 watts... Is this a big problem or am I just being paranoid?

Thanks for any information. I did try to do some searches, but it didn't help very much unfortunately
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post #2 of 12 Old 08-12-2008, 12:10 AM
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Your speakers will become very uncomfortable on your ears before they will blow. Keep the volume below distortion and you will be fine.

-Thirsty
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post #3 of 12 Old 08-12-2008, 12:28 AM
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You'll be fina as long as you don't blast them.
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post #4 of 12 Old 08-12-2008, 12:32 AM
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The RC's are sensitive, handle up to 225 watts and 91dB, easy to drive. That Onkyo should be fine. I have the 50's and prior to my current setup was using an older Yamaha HTR, rated at 90 or 100 wpc, cant remember right now, drove them fine. Very nice speakers.

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post #5 of 12 Old 08-12-2008, 12:37 AM - Thread Starter
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Awesome. Thanks guys... You all are extremely helpful!
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post #6 of 12 Old 08-12-2008, 06:31 AM
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If you run a sub crossed over at 80hz and set speakers to small you will be fine.
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post #7 of 12 Old 08-12-2008, 08:02 AM
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Quote:
Originally Posted by oztech View Post

If you run a sub crossed over at 80hz and set speakers to small you will be fine.

Since the bigger danger of damaging a speaker is more related to over driving the amplifier/receiver into clipping and frying the tweeter - how would setting speakers to small be 'safer' if you over drive the amp into clipping?

Thanks,
Erik
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post #8 of 12 Old 08-12-2008, 08:18 AM
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Well, by setting the speakers to small, the amp is no longer responsible for reproducing the bottom octaves as those are handled by the amp in the sub. Further, in ported speaker designs it's common to see a low impedance trough or two in those regions which call for the amp to provide more current. If the amp doesn't have to handle that, then it's better capable of handling everything else. It's not a guarantee, but it does improve your odds that your amp won't be clipping.

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post #9 of 12 Old 08-12-2008, 09:43 AM
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I'm gonna get people riding me like I'm Seabiscuit for this but, are you doing 7.1 or 5.1?

If you're doing 5.1 you're going to have 2 unused amplifier channels just idling along. Why not use one of the features your 606 provides you with and bi-amp your front speakers? IMHO this will further reduce the possiblity of feeding your tweeters a clipped signal. Speaker wire is cheap and, as I have claimed for myself, you'll appear more sophisticated.
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post #10 of 12 Old 08-12-2008, 09:45 AM
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All the answers are correct, but the premise of the question is wrong. There is no need to match the maximum power output of the receiver to the maximum allowed input of the speaker.

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post #11 of 12 Old 08-12-2008, 09:45 AM
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Quote:
Originally Posted by Chu Gai View Post

Well, by setting the speakers to small, the amp is no longer responsible for reproducing the bottom octaves as those are handled by the amp in the sub. Further, in ported speaker designs it's common to see a low impedance trough or two in those regions which call for the amp to provide more current. If the amp doesn't have to handle that, then it's better capable of handling everything else. It's not a guarantee, but it does improve your odds that your amp won't be clipping.

True - but now you're throwing money away on a tower speaker that can dig down to to the 34hz range. Also, we don't even know if Morgan has a sub!

Morgan - those 50's will be fine. As bob mentioned, the 50's are a very sensitive speaker and don't need a lot of power to drive them very loud. The only way you'll clip your amp is you have a very large party with a lot of people you don't know who want to turn up the volume on your receiver to '11'. Or, if you watch movies very loud and there is particularly dynamic sequence that causes the speaker to draw more power than the Onkyo is rated for.

As an FYI - I use a 100 watt/channel H/K amp for my RC-70's (which are rated for max power of 250 watts). My H/K receiver (AVR-520) is possesed. Every once in a while (like about 3 times a year, if that much) without warning, the volume just starts to increase. I've run Polks (RT800i's), Ascends (340's), and these Energy's off the receiver/amp combo for 6 years now (wow - time flys). Anyway, for all these speakers, I've had the receiver go to full volume before I could get there (usually doing some kind of work when it happens). The receiver or amp NEVER damaged the speakers. It plays really really LOUD, but zero damage.

The reason is it's a 'high current' amp and it can supply the wattage required for short bursts without 'clipping'. I'm no 100% sure, but I think your Oink is also a high current receiver. If so, you'll be fine for those one off movie sequences.

"it's better to have it and not need it than to need it and not have it"
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post #12 of 12 Old 08-12-2008, 09:54 AM
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I don't see it as money thrown away as you gain enormous flexibility with respect to speaker/sub positioning while still retaining the other benefits of the speaker. I figure he's got a sub seeing as he's not posting in the 2 channel area.

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