I've just this morning ordered a black Switchcraft stereo barrel jack socket. The current one works fine even with a normal jack plug until a side force is applied to the plug which cuts the signal. It's never happened on a gig but does happen occasionally when sitting. The problem seems to be too much clearance at the entrance hole allowing the jack to move around. I'll check the replacement one doesn't have the same issue before fitting. Thanks for your advice.
From the limited photos and information supplied this looks like a lovely bass. The replacement machineheads are higher quality than usually found on Mexican Fenders. It'd be good to know what the replacement pickup is? If it's sub 9lbs it's a winner.
This is the bass in question, a 1991 Thumb that I've owned since about 1992.
The barrel jack socket is accessible and I do have the ability to replace it; I'm just reluctant to, although it would be an opportunity to replace it with a black one.
It's shown in this table from the Ampeg quick start document. It doesn't mean it will be as good at producing bass as a 610 cab of similar sensitivity. Don't fixate on sensitivity; it's only part of a cabinet's performance.
Yes, some others have used this combo like that. The only issue may be that the short speaker cable won't reach an amp placed on top of the combo. You can either open the combo up and replace it with a longer one (may require soldering skills) or buy/make a female to male jack speaker extension cable (may require soldering skills).
I may get shot by the luther mafia but when my maple Sterling neck got grubby I cleaned it up and gave it a single thin application of tru oil. I prefer the feel of it over the original and it stays lovely and clean now.