avguytx Posted November 14, 2017 Share Posted November 14, 2017 I've got my Mac amp ready to fire up but I guess I'm leery on powering it up without using either my DBT or variac. Only problem with variac is that it doesn't have an ammeter to monitor current so I've usually used the DBT...especially on old 70's recovers in the past to check foe shorts before actually running them. I guess I'm more leery on the MC250 after putting two new 22,000mfd caps on it and also the new multi caps. Is this the best bet? I've got 60w and 100w incandescent bulbs to work with. I'm open to opinions and recommendations as I obviously don't want a major catastrophic event to happen. Quote Link to comment Share on other sites More sharing options...
djk Posted November 15, 2017 Share Posted November 15, 2017 DBT is the best thing to use on a solid state amplifier. Most will power up with a 75W incandescent bulb, the MC250 will run on a 60W. A Hafler DH500 will need a 150W bulb. Many amps will not behave with a Variac, the Crown DC300A being an example. 1 Quote Link to comment Share on other sites More sharing options...
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