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X_Factor wrote:
at 4 ohm gains need to be about 3/4
vs 1ohm which is about 1/3
SR wrote:4 ohm.......
SR wrote:Running your class d amp at full load for daily playing with stock electrical system can lead to inaudible clipping which can eventually damage the sub as well as the amp.
Because of the nature of what clipping is. Amplifiers send alternating current to speakers to drive them. These alternating current moves in waves which then translate into motion of the subwoofer. A clean alternating signal would result in smooth woofer movement. Clipping is when the amplifier begins to send direct current to the subwoofer. This direct current heats the speaker's coil and if prolonged will melt/burn the adhesive which holds the coil to the former. Or even burn the insulation off the coil. Both of which results in the infamous subwoofer smoke. Most men out here who burn subwoofers, even the budget subwoofers are clipping the hell out of their subs. And all of them would say "those speakers are sheit..... I have too much power". I sure if u put their amps on an oscilloscope they would have huge square waves. Clipping like mad.Brian Steele wrote:SR wrote:Running your class d amp at full load for daily playing with stock electrical system can lead to inaudible clipping which can eventually damage the sub as well as the amp.
Why will inaudible clipping eventually damage a subwoofer or amplifier?
vct17inch wrote:Clipping is when the amplifier begins to send direct current to the subwoofer.
Moving from a sine wave of normal operation to a square wave when clipping; Can't the peaks of the wave when clipping be akin to a momentary DC input?Brian Steele wrote:vct17inch wrote:Clipping is when the amplifier begins to send direct current to the subwoofer.
Um, no. It's a clipped waveform, which basically consists of a fundamental and odd-order harmonics, not direct current. Most amps have protection circuitry that shuts the amp down if it starts to pass DC anyway (usually caused by one or more of the output transistors failing).
And bad clipping is definitely audible. SR referred to "inaudible clipping".
vct17inch wrote:Moving from a sine wave of normal operation to a square wave when clipping; Can't the peaks of the wave when clipping be akin to a momentary DC input?
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