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Could running a bass through a guitar amp hurt the output transformer?


NoirAbattoir

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Someone suggested that running a bass guitar through a guitar amp could hurt the output transformer because the transformers aren't made to handle the bass frequencies. Is there any truth to this?

 

I'm planning to run a bass into a 120 watt Peavey Butcher amp head into some bass cabs.

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If you do a search you'll find about a thread every other week asking this. It's an age old debate that breaks down to who you believe more.

 

 

I've actually never heard anyone suggest it would hurt the output transformer. That's even dumber than most arguments against using a guitar amp.

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I've actually never heard anyone suggest it would hurt the output transformer. That's even dumber than most arguments against using a guitar amp.

 

 

My bad, I skimmed ahead a little too quickly, I was expecting it to be another "bass into guitar speaker" debate.

 

It is dumber. I dare say they probably can't make a transformer that is bandwidth limited, nor would I understand why.

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Well, the guy said some mumbo-jumbo about the bass frequencies "saturating" the output transformer and damaging them. I've been a guitar tube amp freak for years, and I went and bought a Peavey Butcher to build bass rig with. I don't think anything other than leaving the amp running with no load would hurt those transformers, they're bigger than my freakin' head.

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I dare say they probably can't make a transformer that is bandwidth limited, nor would I understand why.

 

Sure they can and do on a regular basis. :)

 

The point is, the output transformer will not be harmed by seeing a full spectrum signal on the primary.

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The electronics will be fine, if anything the earlier stages will probably limit the bass frequencies, but in any case, the transformer should be more than fine.

 

The only piece to watch out for are the speakers, which will not be able to handle the lower frequencies and will most likely tear themselves to shreds, use a bass cab though and you are sorted.

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ok so what does kill a tranny ? Incorrect loads and I have heard that running it on 10 all the time can take them out , like with a attenuator ,I seem to recall guys where burning them up with their powersoaks , and also seem to recall Eddie Van Halen tricked a bunch of guitards into using variacs and many a fried Marshall was the result .

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Someone suggested that running a bass guitar through a guitar amp could hurt the output transformer because the transformers aren't made to handle the bass frequencies. Is there any truth to this?


I'm planning to run a bass into a 120 watt Peavey Butcher amp head into some bass cabs.

 

 

Did he work in a music store?

 

I bought my first Sound City amp from Guitar Center. I knew nothing about them then. The salesman (who had traded the amp in) gave me a story about it being a super rare prototype,showroom condition, all that rot. Sounded OK in the store, I convinced them to let me try a bass & bass cab with it, sounded wicked, so I bought it. I get it home, and before I even got ht echance to use it my guitarist wanted to try it. We hook it up, and at volume it starts doing all kinds of funky (in a bad way) stuff. It's clearly ill. I return it. A few weeks later, the salesman is trying to sell it to another customer. A couple weeks after that, it's sitting in a pile of broken amps bback at the store some guy is buying for parts. I overhear the salesman saying "some guy played bass through it and broke it." Funny enough, the salesman was gone the next time I was in the store.

 

Your guy was using big words without the proper training. Big words should require a permit and a safety course so nobody gets hurt.

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ok so what does kill a tranny ? Incorrect loads and I have heard that running it on 10 all the time can take them out , like with a attenuator ,I seem to recall guys where burning them up with their powersoaks , and also seem to recall Eddie Van Halen tricked a bunch of guitards into using variacs and many a fried Marshall was the result .

 

 

Other than an improper load, winding insulation can be damaged from thermal cycling. Doping of the windings is supposed to prevent this but sometimes it just happens. Power transformers can be destroyed by electrically leaky capacitors that present too much of a load. Usually the fuse will blow to protect the transformer but occasionally the proper fuse is replaced with a larger one. The power transformer then becomes the fuse.

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Other than an improper load, winding insulation can be damaged from thermal cycling. Doping of the windings is supposed to prevent this but sometimes it just happens. Power transformers can be destroyed by electrically leaky capacitors that present too much of a load. Usually the fuse will blow to protect the transformer but occasionally the proper fuse is replaced with a larger one. The power transformer then becomes the fuse.

 

 

ahh , that reminds me I do need to check my fuses , Thank you Sir !

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Years ago during an impromptu jam session I ran my bass through my guitar amp.


It melted the power tubes. Didn't hurt the transformer though, but it is not a practice that is recommended.

 

 

Any problems the tubes had were entirely unrelated to you playing bass through the amp.

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Any problems the tubes had were entirely unrelated to you playing bass through the amp.

 

 

 

 

welll......

 

 

unless they were GUITAR tubes..........

 

 

 

 

 

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:poke: :evil:

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