D
₂
O Amplifier
User Manual
Dusky Electronics, LLC
Durham, NC USA
Page 1: ...D O Amplifier User Manual Dusky Electronics LLC Durham NC USA...
Page 2: ...nstrument especially electric guitar or bass The D O Amplifier supports speaker loads of 4 8 or 16 The 32 watt output may be reduced to 8 watts by means of a rear mounted toggle switch allowing a grea...
Page 3: ...If the unit is powered on use of this switch can keep the output of the amplifier muted while allowing the tubes to remain warm and ready to amplify thus keeping the amplifier in a hot standby mode W...
Page 4: ...pick It should be set to match the impedance of the speaker load attached to the amplifier See the section on speaker load below SPEAKERS One or two speaker cabinets may be plugged into these speaker...
Page 5: ...ed sound so the D O may actually sound subjectively neutral with all controls set at 12 o clock It is difficult to make this amplifier sound bad Experimentation with extreme and bizarre EQ settings is...
Page 6: ...and may fail catastrophically in the worst case and just not last as long in the best case There are no current production tubes of this type so you would only encounter these among vintage tubes Our...
Page 7: ...ubes in this circuit The good news is that they almost all sound pretty good so don t sweat it too much We use Tung Sol 6L6GC STR tubes and recommend these without reservation The performance of power...
Page 8: ...no longer continuous from one end of the fuse to the other If you have a multimeter you can check for electrical continuity across the fuse Replace the fuse with the proper type of fuse See the above...
Page 9: ...be seen by a qualified repair technician Frequently Asked Questions Do I need to bias my amp when changing power tubes Because the Dusky Electronics D O Amplifier s power section is cathode biased wh...
Page 10: ...bit of a pop There is no need to power off the amplifier or engage standby Can I unplug or plug in speakers while the amp is on When plugging in or unplugging speakers the amp should be powered off o...
Page 11: ...ction there is no convenient point to insert an effects loop that would allow processing the overdriven signal The D O Amplifier is often touted as a great clean pedal platform because of its wide ban...
Page 12: ...rk on one of our amplifiers The D O is a fairly simple circuit and is designed with serviceability in mind so repairs should generally be rare easy to perform and inexpensive Of course we know our amp...
