geoffbyrne Posted March 27, 2014 Share Posted March 27, 2014 (edited) So, would putting an 12AY7 or a 12AU7 in V2 sort the DI problem? G. Edited March 27, 2014 by geoffbyrne Quote Link to comment Share on other sites More sharing options...
dannybuoy Posted March 27, 2014 Share Posted March 27, 2014 You'd have to try it I guess! Depends whether the DI is too hot because of the V2 tube itself, or because the V1 tube is feeding it too hot a signal. Perhaps it's a bit of both. If I had to guess, I'd say changing V1 would make the gain knob range more usable, and changing V2 would lower volume through the fx loop and DI. Quote Link to comment Share on other sites More sharing options...
thebuckets Posted March 28, 2014 Share Posted March 28, 2014 [quote name='dannybuoy' timestamp='1395875359' post='2407615'] If you check the diagram in the manual, it looks like the second tube only drives the FX loop and DI so therefore shouldn't have an impact on the main tone - so just changing the V1 tube, which should be the one on the right nearest the input should be enough to tame the gain control. [/quote] Nice one DB cheers Quote Link to comment Share on other sites More sharing options...
geoffbyrne Posted March 29, 2014 Share Posted March 29, 2014 (edited) [quote name='dannybuoy' timestamp='1395899379' post='2407682'] You'd have to try it I guess! Depends whether the DI is too hot because of the V2 tube itself, or because the V1 tube is feeding it too hot a signal. Perhaps it's a bit of both. If I had to guess, I'd say changing V1 would make the gain knob range more usable, and changing V2 would lower volume through the fx loop and DI. [/quote] In which case, if it were I, going by the diagram above, I'd try a 5751 in V1 and V2 and a 12AX7 in V3 and if the DI signal was still too hot, try a 12AU7 in V3 instead. This combo ought to give both more headroom and reduce the DI signal. G. Edited March 29, 2014 by geoffbyrne Quote Link to comment Share on other sites More sharing options...
dannybuoy Posted March 29, 2014 Share Posted March 29, 2014 Nice idea, except that there is no V3! Each tube has two stages and both can be used for two separate purposes simultaneously. There are a total of four in the diagram. Quote Link to comment Share on other sites More sharing options...
geoffbyrne Posted March 30, 2014 Share Posted March 30, 2014 Ahhh - ok - I read the diagram as having 3 tubes. Same combination though, 5751 and 12AY7/12AU7. Can but try it. By the way, it seems that some valves marked 5751/12AY7/12AU7 are actually faulty or low quality 12AX7s being flogged off - and there are differences. If you go this route do your best to get genuine articles. G. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.