Take away another 6 dB for doubling the distance.
Were you doing the test with a pure tone input, or listening to music?
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?
Showing 2 responses by dlevi67
Measuring true RMS voltage with musical signal is generally beyond the ability of a multimeter. That's why @erik_squires was recommending a 60 Hz test tone. The difference between voltage at the speaker terminal and the speaker tap on the amp is whatever loss is incurred on the speaker cable, which should be small if you are using anything like a normal cable section and length. In any case, considering what you are trying to do, I would measure at the speaker. |