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Are these speakers fully compatible?

I have a 10 watt 300B tube SET amp with these specs:

Power output: <= 10W x 2, THD <= 3%, 1Khz
Frequency response: 16—38 Khz, -2dB
Output impedance: 8 ohms
Signal/Noise: >= 90 dB

I was thinking about getting a pair of John Blue bookshelf speakers for my small room and the speakers have these specs:
Efficiency : 87 dB / W / mImpedance : 6 OhmMax power : 30 W

Would I be better off getting a pair of speakers with a 90dB effiency or higher?
spareribs
sfar's avatar
sfar
1,758 posts
 
I'm not sure which JohnBlue speakers you're looking at, or how large a space you would be using them in, but I have a pair of JB3's and drive them with a 10 watt EL84 amp. Mine are in an office setting and the 10 watts drives them easily. The sound is exceptional from such a small rig, as well. I'm very happy with the combination.
elevick
2,636 posts
 
For quiet listening it will be fine. Going to 90db won't get much of an increase. 87db to 90db will double the power but it takes 10db to double the perceived volume. I'd look at 93db or better if you want to "rock".

Currently I have a 7 watt amp that drives 88db speakers fine. However, it really sings with my 94db speakers.
harley52
79 posts
 
So, you have apprx. 3 wpc of clean power.Alas apprx. 4 db = 91db (87+4db's) of clean output from the driver/s. Can you get by on peaks of 92=92.5db of peak output.
Personally I can almost get by with that but, I have found
that most, NOT all, audiophiles ears are no longer sensitive enough for this to be adequate. As always YMMV.
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