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Modular Amps
Egnater / Randall Modular Amps
FinallY !!
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<blockquote data-quote="Jaded Faith" data-source="post: 132560" data-attributes="member: 1068"><p>Setting the bias should always be done without a signal plugged into the input and with a load attached at the speaker out. It's the exact same concept as setting the idle on a car engine. You are determining where it sits when at rest on the gas/input. </p><p></p><p></p><p>The manual for your amp states 15-20mV as an acceptable range. In my experience, the 20/22 are best biased a bit cold, regardless of your typical preferences. The power supply is not very robust and there's not much in the way of headroom so hotter settings are very compressed.</p><p></p><p>As for the meter jumping as you play, that's exactly what should happen. It's like watching the Tach jump when you hit the gas pedal. It's nothing to see the value go up 6 times your bias setting if the amp is turned up to about 1/2 on the Master and chugging some palm muted chords.</p></blockquote><p></p>
[QUOTE="Jaded Faith, post: 132560, member: 1068"] Setting the bias should always be done without a signal plugged into the input and with a load attached at the speaker out. It's the exact same concept as setting the idle on a car engine. You are determining where it sits when at rest on the gas/input. The manual for your amp states 15-20mV as an acceptable range. In my experience, the 20/22 are best biased a bit cold, regardless of your typical preferences. The power supply is not very robust and there's not much in the way of headroom so hotter settings are very compressed. As for the meter jumping as you play, that's exactly what should happen. It's like watching the Tach jump when you hit the gas pedal. It's nothing to see the value go up 6 times your bias setting if the amp is turned up to about 1/2 on the Master and chugging some palm muted chords. [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
FinallY !!
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