Quote:
Originally Posted by Charles
Carl, the key is the peak power demand for the Fenice. Dan A'gostino says that his amps typically should run at no more than 10%. I can say with my XVX, I have never exceeded about 100 watts peak. Typically most material demands between 6-12 watts peak to be quite loud.
Since your Fenice is more sensitive than my XVX you should be fine. I saw a pic of the 750's on the internet. They are monsters. I assumed yours were 750's. I had forgotten just how huge the 750's were. Each one had a 3,000 watt power supply as I understand. My FPB 700 had a 6,000 watt supply.
Certainly, if you plan on bi or tri-amping, use 350's. The only drawback to these amps is their heat and current draw. They run hot despite the sliding class A bias. However, my opinion is that if you can put up with the heat, they are the best amps on the market. D Agostino designed these amps in his prime when electricity was cheap and no environmental concerns. Because of their true class A status, they can never be improved upon. Class A remains the best amplification and always will.
Best,
Charles
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Good input! Did not know about Dan's specific headroom-number "Dan A'gostino says that his amps typically should run at no more than 10%." I'll like that!
Headroom for the poweramp working in listening volymes is a good thing. Agree. If the power really is needed, with tricky load that som speakers possess, get more power. Every speaker has it's maximum. For big speakers like mine and yours that can produce sound around 115-120db of I make a fair guess. 120db-130db makes real pain. After that it does not help with more power. The speaker construction, has this limit. More power does not help. Your ears hurts and you get it not louder. So the power should be delivered in more like normal comfortable listening db. Like you say normally probably not over 100watt is needed for that. For most Krell, it's headroom enough. 1 watt makes 92 db spl, thats loud!!! 2 watt makes it 95db, 4 watt 98db, 8watt 101db, 16watt 104db, 32 watt 107db 64, watt 110db, 128watt 113db... should be enough... I think. But its not just 10% of the 350's max prestanda. It's more like 30%. So yes, 113db would use the 750's if watt-power is the only shit. It's a guess, but I don't think so in this case. If I ever try these two amps side by side in my system
I would let you know how the test came out. I promise.
Not likely to happen unfortunately, but very interesting.
What do you think about the more subtle characteristics in 350's and 750's? Like timbre, resolution and so on. I'm afraid that you can miss some things there.
Do you think thats true, as "they say"?
I like these kind if discussions.
Thanks Charles.