Bass amp vs. guitar amp -- what's the difference, really?

  • Thread starter Thread starter thebigcheese
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Hmm... I figured there wasn't a whole lot of difference. So, theoretically, if I wanted to make by guitar amp sound decent as a bass amp, I could just close up the back? Obviously, the tone controls wouldn't be in quite the same ranges, but I'm just talking about in principle.

If it is a combo tube amp, closing the back is not an option; the tubes must be open to the air for cooling. There is a difference in speaker design as well; bass speakers typically have longer excursion and more power handling ability.
 
One of the heaviest wall of sound tones I ever got was years ago at a reharsal studio with a Boss Metal Zone pedal through a 100 watt Ampeg Bass Amp. It was a really great tone and I never came close to replicating it anywhere else - the same settings sounded terrible from a guitar amp. I always found the Metal Zone's heavy tones were too nasaly but that bass amp was able to push the low end to the extreme. The next time I tried playing through a bass amp the studio owner freaked out telling me I could have damaged the speaker which I thought was a load of bollocks.
 
Right now I'm using a 65w Crate amp for guitar and I just use a J-Station for my bass. FYI, I know that, as long as I'm careful, I can run the bass into the amp. I did do a little searching here to find out about that. So I'm not so much interested in whether or not it's possible to interchange instruments/amps (because it is, obviously) and more interested in the technical differences, which I think we have mostly covered.
 
Some guitar combos just aren't designed for use with bass guitars and blow their output transistors. QUOTE]


if that's what your tech told you when he fixed it.... get a new tech... seriously... transistors arent sensitive to freq response on the low end and on the top only as they approach radio frqs for a few...
 
Some guitar combos just aren't designed for use with bass guitars and blow their output transistors. QUOTE]


if that's what your tech told you when he fixed it.... get a new tech... seriously... transistors arent sensitive to freq response on the low end and on the top only as they approach radio frqs for a few...

Maybe he's got himself one of them radio freq basses..... ;^)
 
If you don't think there's a difference, there's no difference.
 
I guess nobody ever said the obvious:

I played my bass through a Music Man HD-130 Reverb with a 212 cabinet and it didn't work: the bottom end just wasn't there. When I later used it as a practice amp, I used the head with a Hartke 410XL bass cab, and it had a thunderous low end.

This was not some odd coincidence: the fact is, bass speaker design is a specialized art. Back in the day before subwoofers you could often tell how expense a stereo speaker was by whether it had any noticeable bass frequency output or not, and a lot of jiggery-pokery was expended to make relatively small living room speakers put out a deep, articulate bass. It is quite easy to design a "thumper" with no definition or articulation, but much more difficult to provide a musical bottom end.

If you are satisfied with the tubby crap you hear coming out of the cats' cars cruising down the street, God bless ya, son, but you'd better keep away from playing the bass.

Again using my MM head as an example, it had a few features totally useless for a bass: tremolo and reverb, to wit, and an extensive EQ stack that was voiced for the guitar end of the spectrum, and ill-suited for bass.

And to Greg_L, sorry, man, but you have said something that marks you as an ignorant person. Maybe you were trying to be funny, but with that attitude you'd be run out of any band I've ever been in.
 
I hate the sound coming out of those cars. Way too much bass. I put a sub in my car, but only to make up for the deficit of it from my main speakers.

I do have a direct-in thing, which I am using. I just wanted to know the differences.

I have noticed that my guitar amp distorts (or something) at certain notes on certain strings. Doesn't have enough bass, obviously, but it's a nice, clean sound otherwise.

Anyway, like I said, just curious.
 
tsk...tsk... are we having a bad day little one???
 
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