beginning with class a
I would like to build a pass labs son of zen for my midrange horn speakers. The horns have a sensitivity of 109 db per watt, so I think that about 2 watts will be enough to power them. According to passdiy.com I would need a rail voltage of around 8 volts. Is this too low for this amp for good quality sound? How much capacity should I have in the power supply? And finally how much heatsinking will I need?
Any help would be great!
Thanks in advance,
I thought that Nelson stated the SOZ range was from 5 to 50 watts. At the lowest levels, the voltage drop across the transistors becomes more of a factor, so I'd recommend you look at the 5W version unless you have money, size, or heat constraints. I think there's enough info in the article to scale it for 5 watts, but if you have trouble interpreting the graphs, etc. let us know.
More power than necessary is never a problem, but less is.
Good choice for a beginner amp, by the way. Very simple.
Perfect application for SOZ. With horns that efficient,
consider the filtered power supply from Zen Variations
Son of Zen
And maybe could drop the value of the output resistors and get some damping factor improvement. Herr Pass?
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