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Hi, If you got spare preamptubes at hand, try and replace them. One by one. (so replace one beginning at V1 and try your amp, if it doesn't get better, swap V2, try, V3, etc. )

Hi All, I want to convert my Mark IVA (117V-domestic version) to a 240V version. People over here allready told me where to get an Export tranny. (Thanks Aart!). I have some technical experience concerning tube amps. (build my own tube amp last year) But just to make sure I would like to have...

+1 Get it to a tech.

flightcase with casters 8)

Could be powertubes. (even when they are just new) Did you put your amp ever since? If so how did the powertubes look? (red plates, lightning inside one of the tubes?)

mine is 562004 (MarkIV A made in 1990)

Congrats! If that 15watt amp is tube and the new cab has a good (efficient) speaker, it will be LOUD! Really, I build myself a 30/15watt (switchable) amp because I wanted an amp with good tone but without the volume of my mkIV. Silly me, It's almost equally loud. (I'm not joking) Watt doesn't...

In this order: 1. is there A reverb pan installed? (and connected?) (I'm not kidding) 2. Maybe the tube for the reverb gone bad? (I think it is the 5th preamp tube, I'm not sure though)

Shep, WOW :shock: Great playing. I'm not really into prog rock/metal but really, this is VERY NICE! And offcourse great tone ;-) congrats!

Hi, Does your MKIII only have 2 output tubes? :shock: Don't all mkIII have 4 outputs? (And yes that orange stuff is flux.)

Get another tech :wink: No seriously, A mic in front of an amp is ALWAYS better than a direct out. (IMHO). The speaker(s) that you use are a big part of the sound. Don't let anyone take that away. Does your tech said why he wants you to use your recording out? Anyway, I did try using the...

Thanks for the info. That means saving for a new transformer. :cry: (and for some new filter caps, I'm beginning to hear ghost notes, or is it just my ears? :wink: ) thank you all for helping!

Hi shep, If your mkIII stll has the original filtercaps, change 'm. (or let an amptech do it) Then look further if you still have problems. Even if the filtercaps are not the problem, they will give you problems in the future. I have a '90 MK IV and begin to hear gostnotes on my lead channel...

I want to make some snkaeskins too in the future 8) you are addicted, you are addicted,... 8)

Thanks for al the help guys! I'll try to make pictures this evening. (could be tomorrow too, I've got a lot to do today, sorry) greetz

So bassicaly I allready have a export trafo! I bought the amp secondhand (5 or 6 years back) So the previous owner put in a stepdown trafo for nothing? Ok, I'll open my amp again this evening. This would be really cool! does the same colour code apply to this type of trafo? Thanks guys!

Thank god I live in europe :P

Hi Boogiebabies, Thanks for the info. I wrote 110V because that's what I measure on the output of the stepdown trafo. Maybe it should be 117V? I don't know. :oops: The part number on my PT is 561110. :shock: That seems strange doesn't it? Do you, or somebody else have info on this? How...

welcome! Looks like a really nice amp!

Hi, I'm using a VOX wah. But I just had to toy with the electronics. Now it sounds GREAT :twisted: You could buy one secondhand en mod it. A inexpensive way to a "boutique-esque" effect. Wah mods can be found on the internet. It's not that difficult if you can solder. greetz