carlygtr":2icu2zgo said:
wIsEbLooD":2icu2zgo said:
it is only because people set amps with eyes and not ears. dime a control pussies.
Wondering, which control magically takes the "tarp over the speaker" effect away. The Treble? beyond 3:00 way too much sizzle, not cut, sizzle. Same with the Presence. Another question is, why do so many people bitch about it? People who are playing decades and know how to dial in an amp, are suddenly asshole because they can't get anything from the amp? These assholes are "dialing with their eyes"? Really?
You heard the Helios vids. Tell me, how do you get a 101b to sound like that?
The point here is logarhytmic (audio) dirty Treble pot and C40 Excursion cap. Log Audio pot darkens the tone as in halfway it makes the 10% resistance of linear one, then the resistance increases dramatically, becoming actually "Sizzle" control. See here:
http://www.geofex.com/Article_Folders/p ... ttaper.gif. So, it basically doesn't brighten the tone despite turning it up. It only makes the amp fizzy sounding beyong 2-3 o 'clock.
C40 cap darkens the poweramp, making it less in-front, even if You turn up the Presence (which is also 25k pot, unlike classic Marshall 5-10K value, so actually it isn't as accurate). If You like, check my thread in Bogner subforum where I have posted the clips with and without C40 caps. You'll hear for yourself:
viewtopic.php?f=59&t=154260.
So, those two things make the 101B backed off in mix IN CERTAIN circumstances. It is a great amp, but in some situations it is problematic to cut thru. That was my problem in my band, where there are two guitars and bright DSL amp used by second guitarist. Diming the controls unfortunately hadn't helped with "pussy attitude" - I was barely hearable, even with volume turned up. It was loud then but still not hearable, not cutting. In a meantime I was changing pickups, cables, speakers, everything. The effect was actually inconsiderable. But I didn't want to take part with this great amp...
So in certain situations there is something like 101B "blanket effect". And maybe before calling someone a pussy one might accept that there is sometimes a state of affairs where even tuning the amp by ears and diming everything like being not a pussy doesn't help - because of a nature of an amp. In one band it shines, in others - not that much

. Reaching that point You got two ways - You can sell it then or You may try to tune it. I did it second way and the result is astonishing. For me of course, but in my situation it is the only thing I care

. In the other words - I love this great amp now, 'cause after the mods done ACCORDING TO MY NEEDS it became even more perfect than it is already in stock state.
Regardless of few other mods done, only changing Treble taper to linear and removing C40 cap made the amp a beast. Now I hardly turn the Volume past the 9:30 o clock. I simply don't have to. The Resonance control 250K pot soldered in place of R62 L Excursion resistor is set to add ~75K resistance to nfb circuit, making poweramp more gainy and in-front. I have my dirty Treble set at 2 o'clock - IN THE VERY SAME PLACE as having log pot. But it finally works now! The tone cuts like a knife, my Buddy has to set the Volume to 4-5 - so basically to the half - to achieve same amount of audibility as mine.
Regards, Andy