Hey folks, I have a 1993 Mark IVA that I bought new and have played the crap out of.
Recently two issues have cropped up:
1) It seems like I'm getting feedback from the fx loop return back into the send (wtf!). When I use a delay in the loop, I get a weird, choked sound like there's a phase...
Ok, please help me understand the weirdo setup on the Mark IVa.
There are two sets of fx loop jacks, one set called "normal" and the other called "switchable".
There is a rocker switch that lets you select Normal or Switchable.
Testing shows that the normal and switchable jacks cannot be...
Hello,
I'm rehousing my Mark IVa from the original combo into a Mesa headshell, finally.
On the combo, which had sus-4 mounting, there were little metal claws that seemed to provide a grounding contact between the foil shielding of the combo and the metal of the head chassis.
On the new...