Watts! How many do we need?


Got a new amp. Accuphase P-4600. It’s great. I love it. 
150 watts into 8 ohms, 300 watts into 4 ohms and it has meters so I can see wattage. Have them set on freeze so I can see the highest wattage during the session.

My Harbeth speakers are not very efficient. Around 86db. Their impedance is an even 6 ohms dipping no lower than 5.8 ohms. 

Playing HiRes dynamic classical recordings  ( Tchaikovsky , Mahler) at room filling volumes I have yet to exceed 1watt.. 

Amps today offer a lot of watts some going to 600 even 1200 watts. Even if you have inefficient speakers with an impedance that dips down to 2 ohms do we need all this wattage or should we be focusing on current instead? 

jfrmusic

And my tube amp sounds better in every respect with my speakers in ultra linear mode, which is double the power. Also, with its 60 watt/ch it feels significantly more powerful than my previous 80 watt/ch ss amp at the same volume level. Well, you don't compare VAC to Burson, anyway.

@ghdprentice  I assume it makes a great deal of difference on the individual speaker you are using.  I've always heard there is a difference between "tube" watts and SS watts.  On this very sight I have read that tube watts are roughly 3 times as powerful as SS watts.  To this end I've found this lengthy article penned by Roger Sanders to be quite interesting.  Especially as I am driving a set of SoundLab Majestic 745's.  Cheers.  

https://sanderssoundsystems.com/technical-white-papers/172-tubes-vs-transistors

@bpoletti 

 

That’s the issue I was addressing. The meters in my amp are set to freeze at the highest peak reached. So at the end of the night when I check them they never exceed 1 Watt. And that’s with me listening to full Classical orchestral recordings at  room filling volume that are very dynamic.  So even my large peaks  that are  musically dynamic do not move the meter past 1 watt. 

Maybe those meters do not capture those peaks.  I would not go less than 100 watts.  But that's just me.

It’s a new Accuphase amp and the meters are accurate. The amp is rated at 150 watts per channel into 8 ohms and 300 into 4 ohms. I think we are all using a lot fewer watts than we think even  in peaks.