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1st April 2011, 04:56 PM
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#1 |
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diyAudio Member
Join Date: Apr 2011
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hafler dh 220 mono
HI, I have 4 hafler dh-220 amps that I want to make mono and see how to do it but the type and wattage of the 3000 ohm resistor is not clearly stated. does anyone know what I need for that part? Thanks! Tom
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2nd April 2011, 01:01 AM
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#2 |
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diyAudio Member
Join Date: Jan 2006
Location: massachusetts
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I would use a 1 watt metal film. The resistance used is the same as the parallel combination of r25 and r26 (3.3k parallel to 33.3k) They use quarter watt for the 33.3k but 1 watt for the 3.3k . (they do it to make the DC resistance from output to - input 33k for low bias offset, but 3k for ac gain). Resistor for bridging should be same value as feedback resistor, and has to swing the same voltages. Good luck.
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Steve |
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