2005 Fender American Deluxe Stratocaster in Trans Butterscotch on Ash, EX Cond! 1999 Fender American Deluxe HSS Stratocaster w/ Solid Ash Body in Trans Red. 1999 Am Deluxe. Manual and original accessories. Killsonik bloodlust episode 1.

Perhaps getting an extension cab with a 12 (that could be used for other purposes also) would be more beneficial.With no output jack, one would have to be hard-wired (which could be done easy enough) and then you'd have to hard-wire a 1/4 inch plug to the existing speaker if you ever want to use it again. As long as the Ohms match between amp and extension cabinet; it's all doable if that's what you wanna do. Keep in mind; some will say that under-powering a speaker (i.e.- constantly pushing 20 watts through an 80 watt speaker) can be just as bad as over-powering it. Just like a car or motorcycle with a manual transmission, if you shift too soon, you lug the engine, and if you shift to late, you redline it (over rev). I have a Super Champ 112 cabinet (originally to go with my SCx2 amp head), that I can plug to my Blues Jr. Also.but those two amps have built in 1/4 inch jacks directly to the internal speaker, and it's just a matter of unplugging the internal speaker, and plugging in the cabinet.

Underpowering a guitar speaker isn't a problem. Efficiency rating tests are done with 1 watt input, and at home you're often pumping less than a watt into the speaker. I've driven 4 EVM12L's (600 watts total power handling) with a 1 watt amp. Underpowering is an issue with PA speakers. Because if you have an underpowered power amp and have to crank it way up you can get clipping distortion which will destroy tweeters. (You can safely mic a guitar amp that's driven into clipping, because guitar speakers don't reproduce the super high frequencies that a clipping amp produces.

So the PA tweeters don't get worked as hard as a clipping PA amp would work them.). Back on topic, the stock speaker in the Champion 20 isn't a terrible speaker. The bass will fart out at high volume, but that's pretty common in 8' speakers.

Splicing in an output jack and driving a bigger speaker will make a much more dramatic improvement than putting in a better 8' speaker. 20 watts will easily drive multiple speakers. Even two 4x12 cabs. And weirdly, on the used market 4x12's are often less expensive than 2x12's or 1x12's. With solid-state it's safe to use higher impedance speakers. A 4 ohm 20 watt amp will put out about 10 watts into an 8 ohm cab and about 5 watts into a 16 ohm cab. But 12' inch speakers are generally more efficient than 8' speakers, and multiple speakers sound louder than single speakers.

So a 16 ohm 4x12 might sound as loud or even louder than the single 8'. And an 8 ohm 1x12 might also be as loud or louder than a single 4 ohm 8'. Back on topic, the stock speaker in the Champion 20 isn't a terrible speaker.

The bass will fart out at high volume, but that's pretty common in 8' speakers. Splicing in an output jack and driving a bigger speaker will make a much more dramatic improvement than putting in a better 8' speaker. 20 watts will easily drive multiple speakers. Even two 4x12 cabs. And weirdly, on the used market 4x12's are often less expensive than 2x12's or 1x12's. With solid-state it's safe to use higher impedance speakers.

A 4 ohm 20 watt amp will put out about 10 watts into an 8 ohm cab and about 5 watts into a 16 ohm cab. But 12' inch speakers are generally more efficient than 8' speakers, and multiple speakers sound louder than single speakers. So a 16 ohm 4x12 might sound as loud or even louder than the single 8'. And an 8 ohm 1x12 might also be as loud or louder than a single 4 ohm 8'.

Hey thanks for the info, very helpful. I guess I am in the minority thinking - if you love it, why start messing with it?