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Because then every part of the sound system (the input source and the speaker's terminals) could be at 120VAC and electocute anybody who touched it and ground.Gaston said:Why can't you just rectify 120 volts ac and make an 1,800 watt into 8 ohms amp with no transformer?
audioguru said:1800W is only twice as loud as 180W. The average power with music from an 1800W amplifier which clips the peaks is only 90W. With 3dB of headroom then the average power is only 45W.
If you aren't really close to the speaker then it isn't too loud.
Gaston said:i understand the part about 1800w only being twice as loud... but you lost me after that. why would the peaks be clipped? I am only talking hypotheticaly and never intend to build an amp of that wattage, however i do have a need for such amps as i have some pro audio cabinets. I have two folded sub horns that handle 2400 watts continuous alone.
An amplifier is at its max power when the peaks clip a little.Gaston said:i understand the part about 1800w only being twice as loud... but you lost me after that. why would the peaks be clipped? I am only talking hypotheticaly and never intend to build an amp of that wattage, however i do have a need for such amps as i have some pro audio cabinets. I have two folded sub horns that handle 2400 watts continuous alone.
Gaston said:isn't there a way to use a single supply if you use a capacitor on the output?
A very high quality audio input transformer will produce very good fidelity. A cheap transformer might make it sound like a telephone.So what is the audio fidelity loss of a transformer in the audio circuit? This troubles me in principle.