Hi Demianm,
You will be fine with those power ratings for the 803D's. One of the advantages of having bigger amps is that the dynamic range tends to be greater but that is applicable to all bigger amps and speaker combinations. You will be able to drive the B&W's with no problem. The question is if you will be happy with the combination at the volume levels you that sattisfy you. Most people have never heard a 10 watt driving a 90db speaker just to see if it can. I can assure you that I have experimented with many combinations and yes a 10 watt tube amp can drive a 87db speaker with a 3 ohm rating. Does it sound like crap, well sometimes, depends on how loud, at lower volume seems okay. The difference is in the dynamic range as I mentioned above with the bigger amps.
The story about power and speakers is the same to me as Muscle and Fitness magazines, every six months there is a new way to increase bench weight or bicep size, but after a years worth of the magazine, you realize that it is the same stuff, just presented in a different manner. You will too hear many opinions about what is the absolute best way in terms of power, only you can decide what will work for in regards to volume and musical satisfaction with those speakers. If you could do an inhouse or in store demo, ask to plug in the smallest flea watt amp available to satisfy your own curiosity. Trust me, you will be amazed.
Based on what you state about volume levels, you should be fine.
Ciao,
Audioquest4life
You will be fine with those power ratings for the 803D's. One of the advantages of having bigger amps is that the dynamic range tends to be greater but that is applicable to all bigger amps and speaker combinations. You will be able to drive the B&W's with no problem. The question is if you will be happy with the combination at the volume levels you that sattisfy you. Most people have never heard a 10 watt driving a 90db speaker just to see if it can. I can assure you that I have experimented with many combinations and yes a 10 watt tube amp can drive a 87db speaker with a 3 ohm rating. Does it sound like crap, well sometimes, depends on how loud, at lower volume seems okay. The difference is in the dynamic range as I mentioned above with the bigger amps.
The story about power and speakers is the same to me as Muscle and Fitness magazines, every six months there is a new way to increase bench weight or bicep size, but after a years worth of the magazine, you realize that it is the same stuff, just presented in a different manner. You will too hear many opinions about what is the absolute best way in terms of power, only you can decide what will work for in regards to volume and musical satisfaction with those speakers. If you could do an inhouse or in store demo, ask to plug in the smallest flea watt amp available to satisfy your own curiosity. Trust me, you will be amazed.
Based on what you state about volume levels, you should be fine.
Ciao,
Audioquest4life