Speaker Efficiency


   I have been listening to my Decware 300b tube amp for a few months now. At 8 watts, I have them paired with Klipsch Forte IV at 99db efficiency, and this set up has been sounding great. This morning I connected a pair of Sonus Faber Electa Amator speakers, 6ohms at 88db of efficiency. They sound fantastic, with more weight  and depth. I understand there is a huge price difference in the two speakers, but aside from that, if I am getting 80db of volume at my chair, 8' away, what is the draw back of using lower efficiency speakers with SET amps, so long as the volume is sufficient? I did notice turn the Pre amp, the tube amp and the Roon volume towards the highest setting, it starts sounding terrible....

 

128x128marktheshark

I’d be careful matching fleawatt amps with Spatial speakers. I had the x3 with powered subs and 96 db. You would think, easy to drive? A Decware Torii II @ 30 wpc wasn’t up to the task.

Thank you @perkadin . As I sit listening to an Oscar Peterson LP, I agree the Forte's a great match for the 300b. The La Scala's would be wonderful in this room, but man the are beasts.

@ozzy62 that's interesting. I had a pair of Spatial M3's fed by a Parasound Halo amp. The clarity was amazing, even at deafening volumes. I don't play my systems that loud anymore. I sold the M3's and the amp to a buddy, and he has it set up in well treated room, sounds fantastic..... I miss those speakers.....

If I were to go in that direction, I would certainly talk to Clayton at Spatial.

Clayton is no longer at Spatial.

I have no idea why that amp didn’t work. On paper it was a great match and the Decware drove a pair of khorns like there was no tomorrow.

@marktheshark I'm looking at the same crossroads for my office system.  I'm running a lower-powered Decware (rated at 6wpc) that sounds great with both sets of speakers I rotate through.  My bookshelf speakers are rated at 85dB, but sound fantastic and I usually listen at 65-70dB with the occasional listening in the 75-80dB (max) range when my wife isn't home.  I'm looking at experimenting with some more efficient bookshelf speakers, perhaps some Omega's, or moving to a 20-40 wpc tube amplifier.  I do have a subwoofer and this is a smaller space measuring only 12x11, plus I only sit about 8' from the speakers.  

So essentially I'm just wondering if there would be any improvement with a more powerful amplifier, or more efficient speakers, or both!