Post by kenbrolux on Nov 29, 2015 22:20:28 GMT -7
I recently acquired a 2007 Maz Sr. 38 NR 1x12 in a trade. I am big fan of Dr. Z amps and already own a Maz Jr. head with reverb and a Remedy--they are are the two best amps I've ever heard. However, I have been struck by how differently the tone stack on the Maz Sr. operates and how much brighter it is than the Maz Jr. When I run the Maz Jr. with a strat, I usually have all the knobs at noon. However, with the Maz Sr., the brightness level is about the same with the treble at 9-9:30. The Maz Sr. also has a more pronounced Vox-like mid-range, as opposed to the more blackface flavor of the Maz Jr. I also noticed that when I roll the treble all the way off on the Maz Sr., there's still some high-end ringing through, yet when I roll all the treble off the Maz Jr., it's completely muffled. I also ran both amps back and forth with an a/b switch with all tone controls dimed, and the Maz Sr. was far brighter. I run my Maz Jr. through a Scumback J75 in a Dr. Z convertible cab, and I currently have an Eminence V12 in the Maz Sr. combo (although I have ordered a G12H). However, when I run the Maz Sr. through the J75, it's still noticeably brighter. I'm running JJ 12ax7s in V1 and V2 of the Maz Sr with a Sovtek 12ax7LPS in the PI. I've tried both JJs and Sovtek El84s with the same results.
I realize this is a very long-winded post, but my question is whether the tone stack in the Maz Sr. NR is that radically different from the Maz Jr. with reverb. I am also somewhat concerned that the amp could have been modded somewhere along the way. I have posted some fairly low-quality gut shots in hopes that someone might be able to answer this question. However, I can't find any signs of obvious tomfoolery, although I know next to nothing about how the circuit should look. I can also take more pictures if any specific ones are needed. Thanks in advance for any assistance.
I realize this is a very long-winded post, but my question is whether the tone stack in the Maz Sr. NR is that radically different from the Maz Jr. with reverb. I am also somewhat concerned that the amp could have been modded somewhere along the way. I have posted some fairly low-quality gut shots in hopes that someone might be able to answer this question. However, I can't find any signs of obvious tomfoolery, although I know next to nothing about how the circuit should look. I can also take more pictures if any specific ones are needed. Thanks in advance for any assistance.