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Class A bias, speaker sensitivity, watts...?

Hello

Please help me understand the relationship between Class A bias and wattage output. I recently bought a used Vincent Audio SV236MK used for a great price. The specs state 150 watts into 8 ohms, 250 into 4 ohms, and the first 10 watts being Class A @ 8 ohms.

My speakers are Sonus Faber Lumina II which are rated as 4 Ohm with 86db sensitivity. Everything is set up in my small cube shaped office. I used a DB meter on my iPhone and found that when I turn the volume up to what I consider to be "loud" the peak measurement I get is 80db and under.

 

Given the specs above, am I hearing mostly/all Class A watts while listening?

craigvmn

Showing 3 responses by craigvmn

craigvmn OP
14 posts
 

Both speakers playing, distance is just shy of 2 meters

craigvmn OP
14 posts
 

Just music. "Turn turn the volume up slowly until you measure 2.83 V AC at the speaker input" as in the speaker terminals on the speaker? Or should it be at the speaker tap on the amp?

craigvmn OP
14 posts
 

Thank you all for the replies and insights. The question was more of a curiosity than anything. I've been into music since the late 60's and audio gear since the mid 70's. Regardless of operation, through a slew of solid state and tube gear, this amp is the best I've had and considering I can't afford to spend big bucks, the system on the whole is very satisfying. 

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