Effects - Pedals, Multi-Effects, and Floor Boxes

[Urinate Forever]

WHORES UNPLUGGED

[V]

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BAXANDALL wrote:

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V wrote:

You definitely don't want to run a marshall at higher than the ohm rating of the output. I have blown through tubes really fast by doing this. It also strains the transformer. On fenders it's fine but marshalls are not designed the same way and can't handle much of a mismatch. So yes, you should use the lower ohm cab.

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The Marshalls in my experience are rated more honestly, that being closer to the sweet spot.

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Yeah, you want to usually match it to the rating but if you're running half the tubes that would be half the rating on that style of amp. Definitely don't want to go up to like 16 with half the tubes on the 8 ohm output.

[alien]

But hes in the stomp box forum asking for AMP help, amirite? :freak:

[christianatl]

HAVE A SEAT.

[V]

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alien wrote:
But hes in the stomp box forum asking for AMP help, amirite? :freak:

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Psh, everyone knows the amp forum is for posting pictures of fate tits that claim to be inside bikinis.

He's in the right place for tech help.

[ArrMatey]

Am I the only one that's gonna say that the two central power valves are all you need to run your amp on 50w? I've done it before and it worked fine. We had to do it at a gig with a support band and I tech'ed the shit out of the situation.

When you have time, do get it checked, this is an interim solution.

[blueboxer]

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KuntfacedKunt wrote:

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blueboxer wrote:

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christianatl wrote:

I don't think you guys get what I'm saying.  I'm well aware that I should replace the quartet and get the amp biased. That is not am option while we're on tour. 

In leiu of getting the amp biased and replacing all four tubes, is it better to run at half power with the remaining two and three (or one and four) positions, or is it better (less worse? hahahaha) to replace a pair and run at half power or replace all four and run at full power without biasing?

Phil? Someone who knows what they are talking about?

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I would run at half power with two tubes as you mentioned. Obviously equipment failure is a huge bummer when you're on tour.

If you run with a new set or even a new half set with the old ones they could be too hot or cold for how your amp is biased right now and sound like shit.

If you're happy with your amp at half power and the tone is half way decent I'd ride this out until you can get your amp biased with a new set of tubes.

If someone has heard any ill effects from running a particular amp at half power (I'm not sure what you're running) please chime in.

Yes, and if your amp is anything like my Silverface Bassman 100 you can have one spot open on either side as if there's a line down the middle of the four power tube sockets.

 Also wether or not you want to run at a different impedance seems to be somewhat of a matter of opinion, though I've found most people that say you should, say to go up. So if your amp runs at 8 ohms go to 16, if your amp runs at 4 ohms go to 8. (Apparently Marshalls aren't cool like that.) Wether or not you want to risk a mismatch would really depend on how bitchin your output transformer is.

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probably a stock Drake, nothing special. I'd just finish the tour with one head, take advantage of the fact that I carried two on tour.

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There you have it.

[alien]

I WOULD GO ON FART BOOK AND MESSAGE ONE OF THE BUILDERS OR DUDES THAT USED TO POAST ON MAPS FORUM , LIKE JAMES PETERS, ED DEGENERO,   OR CB NIC I WOULD MESSAGE HIM , 

[echodeluxe]

Shhhhhhhh

[cryptosonic]

lol

[Ben Lubin]

Just run one amp. Not like it's not loud enough. Fix the other when you get home, no biggie.

[t-rey]

Fuck all that. Run it half power. MOAR AMPS = GOOD

How'd the rest of the tour go, btw? Did you guys play with ASG in Savannah - heard they were playing down there and I'm pretty sure it was the same night you guys were there.

[KuntfacedKunt]

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ArrMatey wrote:
Am I the only one that's gonna say that the two central power valves are all you need to run your amp on 50w? I've done it before and it worked fine. We had to do it at a gig with a support band and I tech'ed the shit out of the situation.

When you have time, do get it checked, this is an interim solution.

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it's been said about 4 times actually. you can also run just the two outside tubes,

[alien]

if you need two amps ....yer used to having two amps OK

Well what happens now if Xtian Blows up his second amp? ho shit theres that crate power block thing, think they quit making them,?

I would bring I guess two combo amps as backups, your heads blow .... just run the backup combos into the 4x12's.

[thom]

Been there done that. I'm pretty clueless about tech stuff too, considering I have a background in electricity and have been using tons of different vintage amps for the last two decades.

If it's not an option to have it fixed, run it half power if you insist on using both amps and if you're willing to take the small risk of messing up the remaining tubes or worse. I'd personally just play it safe and use one amp untill I got the chance to have the other one fixed. I know it's hard to go back to one amp if you're used to having the extra volume and oomph on stage though...

[juri]

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Ben Lubin wrote:
Just run one amp. Not like it's not loud enough. Fix the other when you get home, no biggie.

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I think this is the safest/best option in this case.

As far as biasing the amp goes, it's really easy to do but the issue is that the equipment to easily do it is not cheap unless you use a multi meter.  It's pretty much just knowing the values of your amp, knowing where to measure and where the trim pot is.

Here's one with a bias kit

Here's a multi meter video:

If you buy tubes you can get a matched set of 4 so you have 2 spares.

[falseknight]

When the amps were new, no-one would have bothered about re-biassing when they changed tubes. In fact, they would most likely just have replaced the dead one.

Mind you, we didn't change tubes until they died back then...

[christianatl]

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juri wrote:

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Ben Lubin wrote:
Just run one amp. Not like it's not loud enough. Fix the other when you get home, no biggie.

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I think this is the safest/best option in this case.

As far as biasing the amp goes, it's really easy to do but the issue is that the equipment to easily do it is not cheap unless you use a multi meter.  It's pretty much just knowing the values of your amp, knowing where to measure and where the trim pot is.

Here's one with a bias kit

Here's a multi meter video:

If you buy tubes you can get a matched set of 4 so you have 2 spares.

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Thanks dude. I'm going to bring my mutimeter and new quartet of tubes to the space and learn how to bias myself.

[BAXANDALL]

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christianatl wrote:

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juri wrote:

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Ben Lubin wrote:
Just run one amp. Not like it's not loud enough. Fix the other when you get home, no biggie.

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I think this is the safest/best option in this case.

As far as biasing the amp goes, it's really easy to do but the issue is that the equipment to easily do it is not cheap unless you use a multi meter.  It's pretty much just knowing the values of your amp, knowing where to measure and where the trim pot is.

Here's one with a bias kit

Here's a multi meter video:

If you buy tubes you can get a matched set of 4 so you have 2 spares.

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Thanks dude. I'm going to bring my mutimeter and new quartet of tubes to the space and learn how to bias myself.

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Do it Christian. It's really not very difficult. Here's is another good link for you. Take a few minutes to read this page over. You really probably only need to be concerned with the very top calculator. http://www.webervst.com/tubes1/calcbias.htm

[AimmarCair]

Fried trannies are exotic even for cannibals.