#1
I heard somewhere recently that if you turn on your amp without a cabinet plugged in that it will blow it up. Is that true even with a solid state? When i first bought my head i turned it on and used it with headphones before i had a cabinet and ive also had things like where i tried to use it and realized i hadnt plugged in the speaker cable. Whats the deal with this?
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Boss CS-3
#2
Why would you turn on an head without a cab? That makes no sense. I dont think it will blow up, but maybe it will if you turn it up all the way.
Guitars: Fender FSR Standard Strat, Squire Affinity Strat, Epiphone Nighthawk
Amps: Vox AC15C1, Roland Cube 15x, Peavey KB-1
Pedals: Digitech RP355, HD500, Joyo AC-Tone, EHX Soul Food
#3
Didnt i say i was using the headphone jack? Something tells me i shouldnt blindly trust advise starting with "i dont think it will blow up" :p
Schecter Damien Elite Avenger FR
Schecter Damien Elite 7
Schecter Damien Elite
Epiphone Les Paul
Fender Stratocaster Fretless
Samick Dreadnaught Acoustic (Unknown Model)
Various Marshall Amplifiers
Boss SD-1
Boss CS-3
#4
Well it certainly can cause a tube amp major problems, but I don't think it would cause any real harm to a solid state.
#5
it's not a problem with solid state.

the headphone jack should mute the speaker anyway.
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#6
You can blow a transformer without having a dummy load (speaker cab). I know this is true for tube amps, I'm not sure about solid states. But if your amp still works then no need to worry. I wouldn't advise doing it often though, just in case.
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#7
Thanks guys. It does indeed still work, I figured it wouldnt be a big issue. but it doesnt hurt to check. ill have to keep that as a priority once i get my triple recto lmao. i cant afford to blow that thing.
Schecter Damien Elite Avenger FR
Schecter Damien Elite 7
Schecter Damien Elite
Epiphone Les Paul
Fender Stratocaster Fretless
Samick Dreadnaught Acoustic (Unknown Model)
Various Marshall Amplifiers
Boss SD-1
Boss CS-3
#8
Oh, i didn't know it had a headphone output, my bad.
Guitars: Fender FSR Standard Strat, Squire Affinity Strat, Epiphone Nighthawk
Amps: Vox AC15C1, Roland Cube 15x, Peavey KB-1
Pedals: Digitech RP355, HD500, Joyo AC-Tone, EHX Soul Food
#9
Fine with SS amps. It's how I used to rehearse years ago.
It's an opinion. It's subjective. And I'm right, anyway.
#10
Interesting tidbit: I was playing around with a Laney VH100R's preamp tubes and how the various combinations sounded with 2 different cabs. About 2 hours in, the amp was all lit but had no sound. So between writing the preamp tube combinations and the tone from the different speakers, I increased the volume, until it was maxed. D'oh!

No sound from the cab but I heard what I was playing directly from the head! D'oh again! I forgot to connect the head to the next cab prior to changing the next batch of preamp tubes.

Although this went on for ~10 minutes (was probably distracted by some planning for the next project); fortunately, the head was undamaged.

#11
I've done something like that before, scary as hell when you realize whats going on.
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#12
I'll also reinforce that it's fine with SS amps. The way I learned that scared the crap out of me.

I was at a local show a while ago, and one of my favorite bands was playing, and one of the guitarists was at a table tuning his guitar with an amp head. I had thought until that point that you should never turn on a head without a cab connected. But I figured since it was solid state (he plays through a Line 6 HD147), maybe there was something he knew I didn't.

They played the show, and everything was fine. So I learned something cool haha.
Spin 'round carousel when your horse isn't screwed in.

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Fractured Instinct
(For fans of Death/Groove/Prog Metal)

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#13
As just a general precaution, I wouldn't ever run a head without a cab, SS or not. Certainly with tube amps, cranking and playing with no cab will cause arcing/flyback across the output transformer, which usually = bang and smoke. Apparently some newer amps do have a short across the speaker output jack when no cable is connected, which grounds the juice from the output tranny via the power tubes, but I imagine this would be very strenuous on the tubes.
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#14
It won't usually blow up a SS amp but it isn't something you'd want to do all the time. It isn't good for it.
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#16
Quote by gregs1020
No amp has ever "blown up".

Lol.


If there's smoke and fire, that's 'blown up' enough in my books
Gear:
Fender AVRI '62 Jazzmaster, Fender Gold Sparkle Strat (custom), Custom Swirled Roswell Rhoads
Marshall DSL15H, Weber Speakers, Fender Champs (x2),
'63 Fender Reverb, Mosrite Fuzzrite, Joe Bonamassa Fuzz Face, Whiteface RAT
Vintage Tubes!
#17
Quote by jukejointjohnny
If there's smoke and fire, that's 'blown up' enough in my books

You probably suck at fireworks.
#18
Quote by Ippon
I forgot to connect the head to the next cab prior to changing the next batch of preamp tubes.

Although this went on for ~10 minutes (was probably distracted by some planning for the next project); fortunately, the head was undamaged.



I guess I got lucky too with my Laney GH50L, a few days ago. It was on for half a minute or so, with me playing and thinking it was the volume knob on my guitar.

Seems to be doing fine, but I'm thinking it gives of less heat now from the power tubes. Could be my imagination, but won't know for sure until tomorrow (rehearsal).

on topic: Solid States should be fine if this happens sometimes, Tube amps you could fry your transformer.
"Don’t be a guitarist. Be a musician."

Steve Howe
#20
Quote by JStraitiff
I heard somewhere recently that if you turn on your amp without a cabinet plugged in that it will blow it up. Is that true even with a solid state? When i first bought my head i turned it on and used it with headphones before i had a cabinet and ive also had things like where i tried to use it and realized i hadnt plugged in the speaker cable. Whats the deal with this?


As far as I know it only happens with tube amps, which need a load or else you could blow the amp. Doesn't apply to SS. IF you want to avoid using a cab, you can buy or make a "dummy load", a device that "tricks" the amp into thinking it's plugged into speakers. But DON'T turn on your tube amp without a load or else you'll break it.
#22
Quote by gregs1020
No amp has ever "blown up".

Lol.

If an amp does not blow up it does not have "teh soul of teh valves"
#23
Quote by kutless999
Why would you turn on an head without a cab? That makes no sense. I dont think it will blow up, but maybe it will if you turn it up all the way.

I saw your avatar and thought you were Roc8995 (Colin). Colin wouldn't spout that babble though so I did one of these

Seriously. Change your avatar to something else to avoid confusion.
#24
Quote by 311ZOSOVHJH
I saw your avatar and thought you were Roc8995 (Colin). Colin wouldn't spout that babble though so I did one of these

Seriously. Change your avatar to something else to avoid confusion.

Ok, sorry. I'll change it. Yeah, I hope you didn't think that was Colin. He sure knows his stuff.

Is that better?
Guitars: Fender FSR Standard Strat, Squire Affinity Strat, Epiphone Nighthawk
Amps: Vox AC15C1, Roland Cube 15x, Peavey KB-1
Pedals: Digitech RP355, HD500, Joyo AC-Tone, EHX Soul Food
Last edited by kutless999 at Jul 6, 2011,