New user - VH4 Questions

  • Thread starter Thread starter Vigier Arpege
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Vigier Arpege

Vigier Arpege

New member
Hi!

I've just purchased a VH4, first of all i have to say i love the sound and i could't be happier with it.
I use the amp in Norway, it's a 230V amp. I'm the second owner.

But i have a few questions(sorry if they are stupid, i'm a bit noob at this):

1. Fuses:

Main fuse:

I noticed that the main fuse that is used says: T2L 250V. Is this the right fuse to be used? I read in the Owner's Manual that the main fuse for 220V operation, must be 4 A slow blow. can i use the "T2L 250V" fuse?

Tube fault fuse: (250mA slow blow)

The "tube fault fuse" that are used says: T250L250V, is this the right fuse? The manual says that "250mA slow blow" fuse has to be used.

2. Tubes:

Biasing:

The amp is equipped with 4 6L6 GC power amp tubes. There is a switch behind the tubes that says 6L6 and EL34 on each side, can i just use this switch when changing from 6L6 to EL34 tubes or do i have to rebias the amp inside?

Pre amp tubes:

When i power up the amp i see that only 6 of the 7 pre amp tubes lights up, the one that does'nt light up is the one allt the way to the right side(seen from the back of the amp) Is there a problem with this tube? This tube also differ from the other pre amp tubes, shouldn't they be the same type?

I noticed whn i run effects thru the parallel loop the effect isn't that powerful as compared to when i use the effects thru the channel inserts, could this be the case because of the faulty pre amp tube (the one that doesn't lit)?

Hope you have the time to answer my questions, and thank you for this awesome amp! I really want it to perform at it's highest potential.

Thanks!
 
welcome aboard :rock:

im sure there will be some diesel guys from the diesel forum to help you out. im not sure about the UK voltage requirements or the amplifiers design personally - otherwise i'd help out.

see you around the forum :cheers:
 
2amp fuse for mains is the right measurement for European amps.

Here is a link, everything you need to know about fuses is here.
http://diezel.typo3.inpublica.de/upload ... uses09.pdf

When you switch tubes, even the same type, you have to rebias the amp.

V7 is Phase Inverter, has nothing to do with loops. It can be a different tube, but you could also use the same type for v7. If your amp makes a sound then the tube should be fine.
 
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