A question of loading...


I have just replaced my aging tube preamp with a new model. When I was using my older model with tube phono stage, I would run my Lyra Kleos and other MC cartridges with a load of 750 ohms. So, I assumed that with my new tube phono stage, which also utilizes a transformer in the phono stage and is also built into my new preamp, that the same cartridge loading would apply. I listened to the Kleos for about a week with this loading, and frankly, while it was fine, I wasn’t bowled over. Tonight I decided to experiment, so the first thing I did was to run the cartridge straight in, with no loading plugs. WOW, the increase in overall musicality and soundstage width was eye opening! Lesson learned is that not all gear is going to react the same when it comes to cartridge loading, particularly if there is a transformer involved and even if you are using the same cartridge from one phono stage to the next! An eye opener, anyone else experience something like this?
128x128daveyf
@fsonicsmith Let’s give Raul some credit here. He is posting in a foreign language about technical issues that are somewhat difficult to extrapolate on even if you are fluent in the language. I appreciate the fact that Raul clearly is one of the more dedicated audiophiles here- and while i may not agree with some of his posts, I do think he contributes points of interest. I know that if we ( natural english speakers) were attempting to do the same thing in Raul’s native language on a foreign web page, I seriously doubt we could make ourselves understood as well as he does. ( even if we have to translate a little in our minds as to what he is trying to put across..:0) ).
Dear @fsonicsmith  : At least I'm not a lier. Thank's for your post.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.
Last night i decided to do a little more experimenting with loading. I had felt that the change from the 750ohm load to wide open ( presumably 47Kohms) was beneficial. The sound was like I described in my OP. However, over more time, I was hearing a very slight increase in brightness on wind instruments, particularly trumpet. Since it was suggested in my preamp manual that a load would be beneficial to reducing any kind of brightness in the cartridge, and that a load of 300ohms was a great place to start, that is what I did. Sure enough the minimal brightness was no longer a factor...and the soundstage benefits i had previously heard were still there! So, for now, 300ohms is where I am at.