Jump to content


Yamaha RX-780 Enough Power to Drive KEF Q750?

Recommended Posts

Posted (edited)

Hey Guys,


I have a Yamaha RX-780 and looking to upgrade my speakers for my HT system. After some information if my AVR is up to the task of driving the following speakers to reasonable levels (from what I've read the KEFs need a fair amount of power)
KEF Q750 
KLIPSCH R41M (Sorrounds)

I have tried to compare the specs of each of the models to determine this but I cant seem to get my head around it. The Yamaha can drive 2CH at 95W and the KEF amp requirements are 15-150W. So to run the KEF at complete full output you would need 150W on each channel? I understand you would never do that in reality and 95W would get it to a very loud level but once you add the center and surrounds how much of that power is relocated and lost? Would I end up with less then ideal power going front and centre. I'd imagine those specs are measured in a lab and are not accurate with real world application too.


I have searched through forums which lead to mixed messages from 'should be fine' to do not do it. Can anybody throw some wisdom my way or have first hand experience?

I could look at going down the path of power amp at the added cost or go for a more efficient speaker such as the Klipsch RP line. 


Appreciate any help or insight from the community.



Edited by Lenidudee

Share this post

Link to post
Share on other sites
Posted (edited)

This would relate to these KEF speakers having lower speaker sensitivity. See:




KEF Q750 is 88db, KEF Q250C is 87db, while the KLIPSCH R41M is 90db.


You could give them a try on your Yamaha RX-A780. If the output from the Receiver isn't sufficient, you could add a Power Amp.


Your Yamaha RX-A780 has Front Left & Right Pre-outs, so you could certainly add a power Amp to take some of the load off the Receiver.




I'm sure some others will jump in with some additional advice.

Edited by bizzibee

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Classifieds Statistics

    Currently Active Ads

    Total Sales (Since 2018)

    Total Sales Value (Last 14 Days)

    Total Ads Value (Since March 2020)
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...