Rewiring possibilities for speaker cabs

[tauzero]

Questions about rewiring speakers to give different impedances crop up with monotonous regularity. This is a quick guide to what you can get from wiring up speakers differently, where the speakers will be evenly loaded.

When I refer to 2, 4 or 8 speaker cabs, that means 2, 4 or 8 of the same size speakers. A 12" speaker with a horn is not a 2 speaker cab in this context.

Wiring speakers up to impedances of under 4 ohms or over 16 ohms is not recommended, and I'd personally avoid anything over 8 ohms.

What this means, when you look at the potential values, is that rewiring speakers is pointless as you'll either let the magic smoke out of the amp or give your amp the equivalent load to pedalling a bike up Mount Everest through treacle while pulling a garden roller.

2 speaker cabs

4 ohm drivers 2 ohm, 8 ohm
8 ohm drivers 4 ohm, 16 ohm
16 ohm drivers 8 ohm, 32 ohm

4 speaker cabs

4 ohm drivers 1 ohm, 4 ohms, 16 ohms
8 ohm drivers 2 ohms, 8 ohms, 32 ohms
16 ohm drivers 4 ohms, 16 ohms, 64 ohms

8 speaker cabs

4 ohm drivers 0.5 ohms, 2 ohms, 8 ohms, 32 ohms
8 ohm drivers 1 ohm, 4 ohms, 16 ohms, 64 ohms
16 ohm drivers 2 ohms, 8 ohms, 32 ohms, 128 ohms

[Ou7shined]

Nice one Mike.
[url="http://colomar.com/Shavano/spkr_wiring.html"]This[/url] is quite a good resource too as it includes some odd configurations.