Increase the gain in the OD channel of MA100H/50H
Posted: 08 Dec 2012, 03:17
Hello guys, 
Seeing the preamp section of the head marshall MA100H in the following diagram (downloaded in pdf here:
http://forum.metroamp.com/viewtopic.php?f=25&t=33579) I saw that in the cathode of the valve V2B there is a 6K8 /0,6W resistor called R18.It's possible to change it with one of a lower value,for example 1.5K or 3.3K,in order to increase the gain of this stage and consequently of the OD channel ?
I hope that, also, SteveD as designer of this good head can give me his advice.
Greetings, and Happy Christmas Holidays.
Seeing the preamp section of the head marshall MA100H in the following diagram (downloaded in pdf here:
http://forum.metroamp.com/viewtopic.php?f=25&t=33579) I saw that in the cathode of the valve V2B there is a 6K8 /0,6W resistor called R18.It's possible to change it with one of a lower value,for example 1.5K or 3.3K,in order to increase the gain of this stage and consequently of the OD channel ?
I hope that, also, SteveD as designer of this good head can give me his advice.
Greetings, and Happy Christmas Holidays.