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View Full Version : Tell me about fuses!



andy474x
10-08-2012, 11:38 AM
This is a boring topic to use for a post, but can someone educate me on amp fuses? Thankfully I've never had an amp problem at a gig, or a fuse problem ever, but I always take spare tubes to gigs just in case, and I'm thinking it would be smart to have some spare fuses too. Anyone ever blown a fuse or know how often it happens? My SE30 has a "Main" fuse, filament fuses, and B+ fuses, and as far as my limited knowledge goes, the main fuse is usually the one located on the back panel of an amp. What do they all do? Since the "main" fuse is the easiest one to access, I would assume it's the most probable one to go out? I'm sure there are a lot of variables that play into it, but it seems like if a fuse blows in the middle of a set, you better hope it's the one that's accessible on the back panel. Also, the main fuse on the SE30 is inside a little compartment in the power cord connection, and it's kinda tough to get into, any tips? I would think maybe the Maryland amps use the same thing.

I have a gig next week, my band is all classmates from dental school and due to the demands of our program we don't get out and play a lot. So I really try to be sure that when we do have a show, all the bases are covered. It's one of the few times that I have a lot of people wanting to buy me beer, so it has to go right! :)

Twinfan
10-08-2012, 01:21 PM
It should say next to the fuse or in the amp's handbook what it is, usually rated in milliamps (mA).

There are two types Fast-Blo and Slo-Blo. Most amps I know of tend to use Fast-Blo, although some will use Slo. Again, check on the amp of the handbook as to which you need :)

LindseyP
10-13-2012, 09:32 AM
It should say next to the fuse or in the amp's handbook what it is, usually rated in milliamps (mA).
There are two types Fast-Blo and Slo-Blo. ...

I have an amp with Slo-Blo -- it blew. Lesson learned, have spare fuses. That fuse saved my amp during an electrical spike, but without another fuse the amp is serving as a paperweight.

Em7
10-13-2012, 10:59 PM
The fuses used on tube amps tend to be of the slow-blow variety. Slow-blow fuses are designed to handle the inductive surge that occurs when one first powers on a tube amp.

Albrecht Smuten
10-15-2012, 04:28 AM
Oh my god... a band full of dentists... this beats all the Norwegian blackmetal attempts to scare people ;)

LSchefman
10-15-2012, 12:54 PM
Oh my god... a band full of dentists... this beats all the Norwegian blackmetal attempts to scare people ;)

What about a band full of Viking Dentists?

Albrecht Smuten
10-16-2012, 02:24 AM
What about a band full of Viking Dentists?

...the horror! :o

andy474x
10-16-2012, 08:06 AM
Oh my god... a band full of dentists... this beats all the Norwegian blackmetal attempts to scare people ;)

HAHA, I got a kick out of that! Maybe I should re-purpose this thread for jokes people could make about a band of dentists... Yeah, I think so. Ready, set, go!

rugerpc
10-16-2012, 08:25 AM
Slo-blo or fast-blo, some fuses (http://us.123rf.com/400wm/400/400/ajt/ajt1002/ajt100200001/6356309-black-ball-resembling-a-bomb-with-burning-fuse.jpg) are just trouble...

Albrecht Smuten
10-16-2012, 09:48 AM
HAHA, I got a kick out of that! Maybe I should re-purpose this thread for jokes people could make about a band of dentists... Yeah, I think so. Ready, set, go!

Allright, so which one of you guys is playing the drill?