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You'll want to replace the speaker with similar ohmage - a stock SF champ should be around 4ohm from memory. If a transformer has been changed it might take something different,
Fwiw, do the midrange/raw mod (lift a bass pot lug and have a different value on a switch iirc). It made my champ way more fun.
Don’t use an 8-ohm speaker with a Champ unless it has an output transformer designed for it - 3.2 ohm or 4 ohm only.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
I think so. All I know from my YouTube research is that paper coil was used in the early days until they realised it started to burn when driven too hard. I'm hardly the most aggressive player in the world but I'd be worried to put an overdrive pedal into it and it suddenly started to smoke!
I'll take the advice on the ohmage question. I think I was trying to force an idea that in reality I know won't work.
Thanks for everyones input, it's really helped in making my decision
There's a good (sponsored) vid on Youtube (you've probably already come across it) where Jack Fossett compares a couple of Jupiters with the different voice coils.
A 15W speaker is fine in a Champ.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Good idea. I've contacted Jupiter to see what they say and whether or not the 15w will meet my needs overall. I did see the Jack Fossett video. I'll watch it again though as I've probably missed something.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Jensen Mod 6" in my Fame Tube 5 (more or less a champ) and it was fine. (Currently got slightly higher wattage speakers in my low wattage amps but that's for tone rather than power-handling.)
The paper ones seem to be a bit brighter, at least judging by the video- I've never tried the exact same model head-to-head (you can only really do that with Jupiter I think? Most other companies don't seem to let you specify the voice coil former), but the couple of paper voice coil speakers I have do seem pretty bright up top (granted, a ton of things affect the tone).
Will be interested to hear what Jupiter says and what you think of the speaker when you decide what to go for.
So I enquired with Jupiter if there was a more affordable shipping option – the cheapest was $75. They said HiFi Collective in the UK would be stocking the speakers in the new year, otherwise they could knock $25 off the shipping fee and would send an invoice if I wanted to go ahead now. I agreed, said thank you, and asked which speaker they think would be better for my needs before going ahead – the paper cone or standard. That was a few months ago and I haven't had a response since.
Meanwhile, an Eminence Patriot 820H came up on eBay a couple of weeks ago, which I had in my last Champ. I won the bidding just shy of £40. However, while it sounds great, I'm keen to try the Jupiter alnico. I'll try with HiFi Collective in the new year, and if they don't happen to stock them, then I'll try Jupiter again. But for now my Champ sounds much better than it did
Nice score on the Eminence
Well, I checked their site and they have the 8SA. I added it to my basket out of curiosity but you have to spend a minimum of €160 to place an order – there's nothing else I need. However, if push comes to shove I could add a couple of 12AX7s as spares for my amp and pedal. We'll see.