trinityamps.com

Trinity Amps Guitar Amp Forum
It is currently Fri Oct 22, 2021 1:05 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: sIII to TMB
PostPosted: Thu Mar 17, 2011 8:16 pm 
Offline
Experienced
Experienced
User avatar

Joined: Thu May 17, 2007 12:44 pm
Posts: 204
Location: Vancouver BC
After reading and listening to the Brown sound mods, I got the urge to tweak again! I was wondering if it was possible to change my sIII a bit . I like the normal channel of my sIII but thought it might be cool to change just the TMB channel to TMB specs, to kind of max out the potential gain available. Is this possible?


Top
 Profile  
 
 Post subject: Re: sIII to TMB
PostPosted: Thu Mar 17, 2011 9:44 pm 
Offline
Experienced
Experienced

Joined: Fri Aug 27, 2010 8:57 pm
Posts: 226
Location: Dallas, Tx
Should be no problem. I would start with your sIII schematic viewtopic.php?f=12&t=689 . Look at the notes at the bottom for "To increase gain on TMB channel". I would do mod 1 and mod 4.

Do you have the boost switch? If so then add the cap C21 to R34 so it is on the boost. That way you can switch between the sIII type gain to the TMB type gain. If you do not have the boost switch then just do mod 4.

_________________
Les

http://www.soundclick.com/unimind


Top
 Profile  
 
 Post subject: Re: sIII to TMB
PostPosted: Thu Mar 17, 2011 10:25 pm 
Offline
Expert
Expert
User avatar

Joined: Sun May 20, 2007 1:45 pm
Posts: 1254
Location: YYZ
G-log wrote:
After reading and listening to the Brown sound mods, I got the urge to tweak again! I was wondering if it was possible to change my sIII a bit . I like the normal channel of my sIII but thought it might be cool to change just the TMB channel to TMB specs, to kind of max out the potential gain available. Is this possible?

It's pretty easy to mod any of the Trinity 18W amp versions to any other version. However, if you want some fun with gain, why don't you try Unimind's Brown Plexi mods?

_________________
Great tones come in small glass jars!


Top
 Profile  
 
 Post subject: Re: sIII to TMB
PostPosted: Fri Mar 18, 2011 11:59 am 
Offline
Experienced
Experienced
User avatar

Joined: Thu May 17, 2007 12:44 pm
Posts: 204
Location: Vancouver BC
Ok, thanks guys. I think I will try the brown mods . I have done the boost switch already. My main concern,I guess ,was that I didn't want to change my normal channel as I really like it the way it is.


Top
 Profile  
 
 Post subject: Re: sIII to TMB
PostPosted: Fri Mar 18, 2011 12:26 pm 
Offline
Experienced
Experienced

Joined: Fri Aug 27, 2010 8:57 pm
Posts: 226
Location: Dallas, Tx
You can do the brown mods for the TMB channel only and just leave your normal channel as is. The 220Ks on the power tube grid reference might lower gian slightly and increase clean headroom which will affect both channels (although I could not really tell the difference). If you don't want that then just leave that mod out as I only did that for fixed biasing.

Edit: And I also really liked the normal channel. I just made those mods to tighten the bass a little for when I am cascading the channels.

_________________
Les

http://www.soundclick.com/unimind


Top
 Profile  
 
 Post subject: Re: sIII to TMB
PostPosted: Fri Mar 18, 2011 12:30 pm 
Offline
Experienced
Experienced
User avatar

Joined: Thu May 17, 2007 12:44 pm
Posts: 204
Location: Vancouver BC
That is what I am hoping for. I use this amp with a Radial A/B /Y switcher so I can have effects on the normal channel and straight up rock mode on the TMB channel.Going out to get the parts I need today! Thanks again Les!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group