CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,664 Location California Jun 3, 2020 #1 this is from a Roland Bolt 60 guitar amp, has a fet preamp and a tube output did not dissect, used PRR method to get turns, plenty of room in the window for passing wire, Attachments roland bolt 60 opt a.jpg 149.2 KB · Views: 23
this is from a Roland Bolt 60 guitar amp, has a fet preamp and a tube output did not dissect, used PRR method to get turns, plenty of room in the window for passing wire,
CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,664 Location California Jun 3, 2020 #2 and another shot, Attachments roland bolt 60 opt b.jpg 137.8 KB · Views: 25
CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,664 Location California Jun 3, 2020 #3 do not know who made it, lams seem to be metric but close to 100 EI, running lots of Gauss to make 60 watts probably closer to a 40 watt amp, here is the print> Attachments Roland Bolt 60 OPT.jpg 98.9 KB · Views: 57
do not know who made it, lams seem to be metric but close to 100 EI, running lots of Gauss to make 60 watts probably closer to a 40 watt amp, here is the print>
CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,664 Location California Jun 3, 2020 #4 schematic since this is hard to find> Attachments bolt 30-60 service notes .jpg 498.5 KB · Views: 44
CJ Well-known member GDIY Supporter Joined Jun 3, 2004 Messages 15,664 Location California Jun 3, 2020 #5 sq wave on unloaded secondary> Attachments sq wave.jpg 172.9 KB · Views: 20