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67 posts

Master Geek

#56785 23-Jan-2010 18:52
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Hello All, I am after some advice (sorry this is so long)...

I currently have a Yamaha HTR-6030 AV Receiver with a Yamaha NS-P270 speaker set (5.1 Surround Sound - 4 Satellites, 1 centre + Sub).

According to the speaker manual, the satellite speakers have the following specs (NX-E270):

Maximum Input Power: 80 W
Impedance: 6 Ohms
Frequency Response: 100 Hz - 25 kHz (-10 dB)

And the Centre speaker has the following spec (NX-C270):

Maximum Input Power: 100 W
Impedance: 6 Ohms
Frequency Response: 130 Hz - 20 kHz (-10 dB)

Now, from what I understand, you should never connect speakers to a Receiver that has a greater output?

My current Receiver has the following specs (in theory this means the satellite speakers are under-powered already)?

RMS Output Power:
100W x 5

Total Power (20Hz - 20kHz)

Anyway, my question is, will my existing speakers work on the Yamaha RX-V765? I know my speakers are not great and I will look at replacing them one day, but I can't afford a new amp and speakers all at once.
Below are the specs of the new amp:

Minimum RMS Output Power (8 ohms, 20 Hz–20 kHz, 0.08% THD)
Front Channels 95 W + 95 W
Centre Channel 95 W
Surround Channels 95 W + 95 W
Surround Back Channels 95 W + 95 W
Maximum Power (8 ohms, 1 kHz, 10% THD)
Front L/R Channels 135 W + 135 W
Centre Channel 135 W
Surround L/R Channels 135 W + 135 W
Surround Back Channels 115 W + 115 W

Thank you...

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23088 posts

Uber Geek


  #292613 24-Jan-2010 03:12
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The recivers rating it what it will put out at a given set of other paramters when you ask that of it.

If you dont turn it up that much, then it will not be putting out that much power. - there is stuff all difference between 80 and 95 watts, and as you can see, the amp will do 135 if you are happy with it distorted to hell.

If you turn it up too loud, one of the things will distort - in your case probably the speakers, so turn it back down and you will be fine. The wattage ratings on speakers are usually pulled out of someones butt or similar anyway. If you were to put a real constant 80 watts into almost any domestic speaker it would be smoke and broke within seconds.


67 posts

Master Geek

  #292759 24-Jan-2010 22:05
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Now it looks like I can get a set of Yamaha NS-333 bookshelf speakers for $275, would they be an OK replacement for 2 front speakers?

The new speakers are:

Frequency Response: 65 Hz - 35 kHz
Sensitivity: 87 dB/2.83 V/1 m
Input Power (Maximum / Nominal): 150W / 60W
Impedance: 6 Ohms

What do you all reckon?


23088 posts

Uber Geek


  #292765 24-Jan-2010 22:22
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Bookshelves are bad for bass generally. Yamaha do make some of the better ones. If you like it loud you will have to have a sub, and set the crossover on the reciver at about 120Hz at the lowest or the speakers will bottom out.

Ignore the stated freq range, thats normally done at 1 or 0.1 watt or something equally stupidly low.


67 posts

Master Geek

  #292772 24-Jan-2010 22:30
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I have already got a Yamaha SW-P270 6.5" 100W advanced-YST subwoofer - Would the bookshelf speakers be ok with that??

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