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Ampeg SVT Classic

jzangari,

Its interesting because I use the exact amp setup you are using (Ampeg SVT Classic + SWR 6x10) and I love it; its been my classic rock rig for 7+ years. While the SWR is a bear to haul around, it does have built-in wheels and a rear handle, while almost any 4x10 means you have to move with a hand truck, so I think the two cabinets are about equal in their portability.

When I play a smaller venue and don't need the 6x10, I either use a combo amp (I've got a few good ones) or match the SVT with a Trace Elliot 1x15 cabinet. I gets lots of compliments on the sound of this setup, especially from other bass players.

I wouldn't get rid of the SWR if it works for you, because I don't know how much you might benefit by replacing it with a 4x10. I recommend that you find a good 4 ohm 15" cabinet and see if that works for you.
 
So an 8 ohm and 4 ohm cab give you that weird setup at 2.67 ohms. Would you run the Classic amp at 4 ohms or 2 ohm setting? Does Ampeg have a position on this that anyone is aware of for warranty purposes?
 
So an 8 ohm and 4 ohm cab give you that weird setup at 2.67 ohms. Would you run the Classic amp at 4 ohms or 2 ohm setting? Does Ampeg have a position on this that anyone is aware of for warranty purposes?
2, and not that i know of with the warranty stuff. with tube amps a variation like that isn't going to hurt it. impedance isn't static, anyway. i still recommend against mixing 4 and 8 ohm, though. nothing works better than using matching cabs in the first place, and i'm not a fan of impedance mismatches because of unequal power distribution.
 
there is a little controversy there. many people have run tube amps at wrong impedances with no problems. i've done it on occasion with rentals. but it's possible it can stress transformers and tubes and cause an eventual failure. but mostly it's if you're really loud that you have to worry the most according to most techs. if you're not too loud, you're generally ok, although i'd never do it with my babies.
 

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