BassmanPaul

There are a lot of misconceptions around speaker sizes. Size alone doesn't make a lot of difference when it comes to sound. Take a look at Phil Jones offerings with their array of 5" drivers.

Try linking the Send and Return with a signal cable and see if that helps.

Get a second identical 1x12 and stack it vertically on top of the first. Problem solved.

OK @jezzaboywhat was the original plan? Inquiring minds need to know!!

Do they still use the stake far said burning? LOL

Usually when you check polarity with a 9V (PP3?) battery when the battery positive connects to the drivers positive pole the cone will jump out away from the magnet. To mount the SpeakOn socket you'll have to drill a 15/16" diameter hole. These drills are readily available with a half inch shank to fit an electric drill.

Don't bother with the combi socket just get a four pole NL4 socket and wire the speaker to +1 and (-)1 and be done. !/4" phone plugs and sockets are very problematic as speaker connectors.

If you spend the money almost anything can be made to work. To me that's a lot of messing around when all someone wants to do is sound good on stage. My first Bassman was brand spanking new when I set it up on stage and leaned it back on its legs. It sounded so bad I nearly cried. I returned it to the store, Dawsons in Runcorn Cheshire, and although they had sold my trade in I left it there anyway. Edit: P.S. Where is the Hog County?

From one Paul to another: don't bother! You'll be wasting your money.

A 50W Fender amp couldn't cut tin the Sixties let alone cope with todays' volume levels. As Bill says it's OK at low volume but stage volume forget about it.

If the 4x12 is anything like it's 2x12 relation then it's worth about five quid for firewood and scrap metal!

I'm glad you got the amp sorted!

Thank you for my Christmas Present!! Please keep us informed of results.

You have to consider what the impedance match requires. The amp is no doubt looking for a 4Ω load, check the back panel. What is the Barefaced cabinet's impedance. If it's 8Ω the amp will not be safe running at volume into the single cab.

The suggestion of taking the thing to a tech is a valid one. His/her bill will be far less than what your life is worth.

It could be almost anything but careful diagnosis will reveal the problem. I do caution you that a tube amp contains LETHAL voltages even when switched off and unplugged.

You Porker Jack!! LOL

@Brian45 is the link I provided not the part you are looking for?

I'm glad you got it sorted Dave.

Six weeks or so later what was the result??

All my pre-amp bearing basses run off 18V and can be remote powered from the amplifier if I desire.

https://www.ebay.com/itm/325319251098

What are the original drivers?

What does RFI refer to apart from Radio Frequency Interference?

What exactly are you looking for?