wiring in HB212 cabinet

[roundthebend]

I've got an empty HB212 cabinet and 2 celestion g12t-75 Speakers.

The cabinet has 2 sockets marked right - 16ohm stereo, and left - 8ohm mono. A switch between them to select.

Inside there is a small circuit board pre wired with speaker Cables. The right socket has a red and a grey cable, the left socket has a black and a white Cable.

what are my options for wiring and how? I reckon i should put them in parallel to give 8ohms.

[ICBM]

What impedance are your speakers? It's the one thing you don't mention...

If they're 16 ohms the easiest thing is to connect them using the stock wiring, then it will do what it says on the tin. If they're 8 ohms, you'll need to rewire the cab for series (16 ohms in mono), which will almost certainly mean ditching the circuit board - personally, I don't like PCBs in speaker cabinets anyway and I would probably do that even if you were keeping it as a parallel cab.

If you need to know which wire is which, the simplest thing is to look on the circuit board and trace where each wire goes to - the ones that go to the tip connections of the jacks (furthest away from the panel) are the positive connections.

[roundthebend]

What impedance are your speakers? It's the one thing you don't mention...

If they're 16 ohms the easiest thing is to connect them using the stock wiring, then it will do what it says on the tin. If they're 8 ohms, you'll need to rewire the cab for series (16 ohms in mono), which will almost certainly mean ditching the circuit board - personally, I don't like PCBs in speaker cabinets anyway and I would probably do that even if you were keeping it as a parallel cab.

If you need to know which wire is which, the simplest thing is to look on the circuit board and trace where each wire goes to - the ones that go to the tip connections of the jacks (furthest away from the panel) are the positive connections.

Thanks. Yes they are 16ohm speakers. It's difficult to see the wiring on the PCB, but I'll give it a go. I wasn't expecting to find one in there at all, so what does it do?

[ICBM]

Thanks. Yes they are 16ohm speakers. It's difficult to see the wiring on the PCB, but I'll give it a go. I wasn't expecting to find one in there at all, so what does it do?

Makes it quicker, and hence cheaper, to assemble the cabinet.

I don't like them - they introduce unnecessary extra joints which can crack and fail... which is bad enough if it stops your cab working, but worse if there's a valve amp attached to it at the time.

[roundthebend]

Then I might just remove it. I'm reasonably skilled with a soldering iron, and could work out the parallel/series wiring more easily with it out of the way.
Cheers