Downunderwonder

Those must be some very common units over there. I'm guessing no serial numbers or identifying marks?

There's two kinds of bassists who all use distortion / overdrive in various degrees. Those whose tone includes a significant amount of clean mids who will easily hear when a phase correction is in order and have opted for said correction. The rest. I suspect many of this group have never A/B trialled a phase correction to their clean blend.

Meh. They don't want to know. Their loss. They banned BassmanPaul for chrissake!!!!

One mod in particular needs the stick removing from his back passage. Zero appreciation for the British sense of humour. Cannot distinguish nastiness from good natured ribbing, lets fly with the ban hammer. F that noise. Nice to be here.

External blending is fraught with phase problems. Best avoided by using pedals with their own clean blend. Afaik all distortions produce a phase reversed signal, no problem until you blend and your mids come over all muddy. There are blender pedals like One Control that have a phase switch. Fine for one pedal but not for multiples unless you always use the same set. Then there are multi channel blenders like the ones from a Canadian outfit whose name escapes me. They make the Attack Goat, the only pedal I would like to try solely because it has the best name for a bass distortion ever. Multi channels lets you have 180° control over each which is far far better than none at all.

That could well be no coincidence. Either that or combined with fan failure. If GB = GenzBenz it should be a little bit filtered on the sub lows already but a HPF wouldn't hurt.

I think the Quilter BB800 is a bit taller than a GK Mb500 but not as wide. Both properly safety certified.

Weird labeling but dollars to donuts that is what it is. Whatever you do, don't plug the Ampeg into any of the other jacks. That could pop something and it certainly won't sound any good.

Option B, change the pick guard over to tort. Job done. If determined to paint it I would have some fun and go with some custom colour and forget about period correct as it is a reproduction anyway. Pearl forest green.

You can have more volume with more bass, or just more bass, or reserve dynamic emphasis potential. How much of each depends how powerful your amp is and how much power the single cab can handle.

I haven't seen any shiny 3D printer plastic. You're in the right place to find a volunteer to make you a new one with a router. You could even jump in with both feet again and buy one....

A gob of blutac will stop a rattley caster.

Best excuse for a Ubass ever.

The other reason to brace is it lets you use a thinner panel for a significant overall saving in weight.

HPF and EQ because a 2 10 2 Fender tonestack is next to useless.

I epoxy my T-nuts, not too much or it gets to interfering.

I guess I have naturally not so sweaty hands even if I am too hot. Of thermal issues I have only been half frozen to death.

Most vertical 210 cabs are a little wider than their depth when tall.

Adds up to only one coil used in 8 ohm operation, other coil becoming dead weight.

Every pub gig I ever played with a 410 was with very little band allocated real estate. Extremely hard to hear what note you're playing so always playing too loud. I would never pay good money for one.

One well placed subwoofer is all you need in a pub.

There is simply no way to swap equal loads series to parallel and achieve a factor of 2 change. 2X in series 0.5X in parallel. In the same way a 4 ohm 410 can't be rewired to be 8ohm.

Big old stuff that works is hts/ctb. Big old stuff that has nearly all its drivers broken, you can't give away.

Think of a number, halve it, halve it again and divide by 2. That's unlikely to be far from what you can get for it.

How to use a variable HPF: Raise the frequency until something is missing. Lower it back down until it isn't. Boost bass a bit for fun. Notice how it doesn't get all flubby. If it does get flubby try raising the HPF a little more. The bass knob gains a lot of functionality when backed up by HPF.