Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Modular Amps
Egnater / Randall Modular Amps
RM50 EL34 bias issue...is there a mod to fix it??
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Synergy/MTS Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="GuitarGuyLP" data-source="post: 107547" data-attributes="member: 1848"><p>I think a switch would be great, a high low range on the bias adjustment would allow a lot more accuracy.</p><p></p><p>A Multi turn pot is just as the name implies instead of a 3/4 turn range or so it has usually 10 full revolutions to cover the full range. Complete overkill, but I am not sure if there is a 2-3 turn pot available. Looking at the schematic I think that the resistor in series with the pot (R36) that sets the range of adjustment might be what needs to be changed. </p><p></p><p>Two have two ranges you would just need a switch and two R36 resistors of different values. I could be completely wrong, and I don't really see the point of doing that mod, but that is the reason that a lot of other amps have a switch is to give you a less sensitive adjustment.</p><p></p><p>I did use some Deoxit fader lube on the pot, and that helped loosen it up a bit.</p></blockquote><p></p>
[QUOTE="GuitarGuyLP, post: 107547, member: 1848"] I think a switch would be great, a high low range on the bias adjustment would allow a lot more accuracy. A Multi turn pot is just as the name implies instead of a 3/4 turn range or so it has usually 10 full revolutions to cover the full range. Complete overkill, but I am not sure if there is a 2-3 turn pot available. Looking at the schematic I think that the resistor in series with the pot (R36) that sets the range of adjustment might be what needs to be changed. Two have two ranges you would just need a switch and two R36 resistors of different values. I could be completely wrong, and I don't really see the point of doing that mod, but that is the reason that a lot of other amps have a switch is to give you a less sensitive adjustment. I did use some Deoxit fader lube on the pot, and that helped loosen it up a bit. [/QUOTE]
Verification
Post reply
Modular Amps
Egnater / Randall Modular Amps
RM50 EL34 bias issue...is there a mod to fix it??
Top