Little Mark Vintage serial effects loop

[SofaKing]

Has anyone switched the effects loop on their LM Vintage from parallel to serial? I had an LMIII and found great instructions and photos on how to do this. But the LM Vintage circuit boards are laid out differently. To do it on the LM III, you have to change two jumpers. I found one of the jumpers on the LM Vintage - it's clearly visible and has a parallel/series label on it. But I haven't found the other one. Any help/suggestions are greatly appreciated!

 

[Laurent]

I would reach out to Markbass directly on this. Do be careful any change probably voids the amp's warranty.

Also what do you think of the amp? It's not been reviewed much here.

 

[SofaKing]

For the most part, I love the amp. Tone controls are very responsive. The tube tone (dirt) comes into play when you crank the gain. With tone controls flat, it takes some of the clank out of my Stingray (a good thing), but that can be restored by dialing in some upper mids. Plenty loud for everything I do. The Variable Pre-Shape Filter has been replace by a switch. I miss being able to adjust the amount of scoop.

Btw, I contacted Markbass and they referred me to their service vendor in the US who has thus far been unresponsive to my inquiries. Bummer as they are not local. If I can't get traction with them I will likely return the amp.

 

[Laurent]

Thank you for the feedback. I highly appreciate it.

Sorry to read Markbass service center is not being more responsive. I believe they are in Los Angeles. The guitar player I play with had an amp serviced there.
Many companies are back from the Holiday break and are trying to dig themselves out of all the emails....

If you want local for Petaluma, you're right in the backyard of Mesa Boogie. I once had a noisy fan on a Walkabout amp, drove there and they treated me like royalty. It was amazing and they fixed the amp too!