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I'm not a tech,but It always been advised to do so and I've never had any problems-I guess you could use a instrument cable for speaker cable but I never have-never will.Maybe someone else can explain it better than I could.
Very much so. They may look the same, and have the same plugs, but instrument cables carry a "signal", while speaker cables carry "power". It's the difference between ~22 ga wire vs. 12-16 ga wire (like telephone wires vs. appliance cords).
Cheers,
It is the current being carried by the wire.
Here are links with details on both types of cables.
Instrument: [Invalid or Expired Link Removed]
Speaker: [Invalid or Expired Link Removed]
Don't ever use instrument cables for speaker cables, you could fry your amp. Instrument cable are "shielded", and prsent more resistance than speaker cables.....which could result in your amp "trying too hard" to get the signal to the speaker. (in lay-mans terms). I've used speaker cables as instrument cables in an emergency, the most that will do is maybe give you some unwanted noise & hiss....but don't go the other way.
Oh no!!! Coffee on a Deluxe?!?! The humanity of it all!
I know! It should be a pint bottle o' bourbon. Right?Oh no!!! Coffee on a Deluxe?!?! The humanity of it all!
With all due respect to the newbies: you should look it up; ie, Google it. There's a wealth of info written by engineers on the internet, Dave gives two good links here. Electronics info is sometimes headache-inducing, but it's important. The more you know the better you are.
Re: Gain:
IME it depends. For some amps it's critical, for others (usually tube amps) it's one more method to craft your sound. I've found it's not critical on the Rumble, and in fact, if I read the block diagram correctly, the higher you run the gain the more you'll use the in-circuit dynamic compression. I regularly, but not always, run my 500 head with the gain all the way up, using the master as a volume control. I can feel the compressor come in, and it's subtle. does not break up. kinda cool.
Perhaps this is why Fender didn't include a clip light? The amp seems modeled trying to get a tube sound, and if so, designing the gain circuit this way makes sense.
IME it depends. For some amps it's critical, for others (usually tube amps) it's one more method to craft your sound. I've found it's not critical on the Rumble, and in fact, if I read the block diagram correctly, the higher you run the gain the more you'll use the in-circuit dynamic compression. I regularly, but not always, run my 500 head with the gain all the way up, using the master as a volume control. I can feel the compressor come in, and it's subtle. does not break up. kinda cool.
Perhaps this is why Fender didn't include a clip light? The amp seems modeled trying to get a tube sound, and if so, designing the gain circuit this way makes sense.
Not only is this correct, but it is also very important to understand fully & grasp heuristically.
Now back to our regularly scheduled programming ...
Linnin,
Damn, you got me!! I'm an old 61 year old rocker, loves Grand Funk, Steppenwolf, James Gang, etc........but this song brings back such great memories, it almost made me cry!!!!
I saw the remaining Cowsills perform here locally in Branson a couple years ago. This song was great live.
HahaYOU DON'T PUT CONTAINERS OF LIQUID ON TOP OF AN AMP
This is not liquid, this is beer !
And I won't do it again, after playing 5minutes loud, there were no gas anymore in it
That Rumble rumbles so much 
So... I have to lug a little table for my beers !?!?!? 
