Some pictures of my new full-function 'Ovation Symphony' line preamplifier. If you follow the link in my signature below, you can get a write -up and more info.
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Im thinking of buying lathe so i could make my own knobs in the size i need....
And maybe also for other DIYers on request
The new amp is on the way. I think I will never finish any of them in 100%, there allways will be some ''new amp'', never ending story.
Congratulations Borys! BG(X) with DC input and cascoded VAS. What's your listening impression?
Hello, everyone, for the first time sent a message, this is my DIY amplifier of 0dB
Excellent work, congratulation.
According to which schematic is this?
Thimios.
Apparently is a true symmetrical design. There are four amplifiers total, bridged per two, to form the LEFT and RIGHT channel. And of course only balanced (XLR) inputs are offered of which the hot(+) is connected to the input of one amplifier and the cold(-) to the input of other. The speaker is connected across to the outputs of the 2 amplifiers, the pos. terminal at the output of "hot(+) amplifier" and the neg. terminal at the output of "cold(-) amplifier". There are some significant benefits offered by this topology.Excellent work, congratulation.
According to which schematic is this?
Thimios.
Nice implementation hansenni . Let me guess:Hello, everyone, for the first time sent a message, this is my DIY amplifier of 0dB
+/-40Vdc supply per amplifier, so in bridge mode 160Vpp max output voltage swing.
That means a max power per channel:
80Vp / 1.4142 = 56.5Vrms
56.5 X 56.5 / 8 = 400Wrms @ 8 Ohms / 1KHz
56.5 X 56.5 / 4 = 798Wrms @ 4 Ohms / 1KHz
I suppose your toroids are rated at 800VA each one (or say at 600VA if you include a good VI limiter per channel).
BTW what means "of 0dB"?
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BTW what means "of 0dB"?
It means this is fully differential (bridge) impedance buffer stage, having 0 dB voltage gain. It accepts balanced signal from any low Z high voltage preamplifier.
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