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46
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Muchless / DC 30 / Re: Looking forward to building a couple of these
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on: December 04, 2009, 06:49:27 PM
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you were luckier than me then! I started learnig some very basics of tube electronics ... a couple of years ago, when I first bought the DC30. And even then, during the 1st year I did not even open it to see the guts. Now days I found how passionate can it be!
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49
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Muchless / DC 30 / Re: Looking forward to building a couple of these
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on: November 30, 2009, 08:45:39 PM
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Well, scalling only the power tubes was just beyond my understanding, at least based on the instructions Dana sends. Nik was so kind of trying tyo guide me trhough it, but I believe I will do the whole amp mod instead. I will probably take out the MV control (wich I don't like at all) and use that place for the VVR.
The only use for the orginal MV I found was for bedroom level practice. But it doesn't do any good in terms of taming the amp at gig or band practice. I hope the VVR makes a difference...
Cheers!
With the London Power version you really do need a master volume (he calls it Drive Compensation) since as you lower the B+ the tubes behave differently and you will overdrive them progressively earlier. On mine you have to turn th DC and PS down together otherwise it all turns to mush. Yep. The same with VVR. Dana at Hall Amplifaction told me that the MV on the DC30 may work, but he would suggest a PPIMV mod. I also asked him a little help with the "only power tubes" mod, but he would not give me any more info that a pdf much too generic for my knoweldge (wich is little) in this matters. Nik indeed, explained me better the whole concept, but also made me realize that the "power tubes only" mod was a little more complicated in terms of instalation on the DC30, as I needed to mod a couple of things more, not only add a couple of caps and resistors (as the "whole amp" mod would requiere only). At least, that's what I could get from his kind explanation! |
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50
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Muchless / DC 30 / Re: Looking forward to building a couple of these
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on: November 27, 2009, 05:27:58 PM
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Well, scalling only the power tubes was just beyond my understanding, at least based on the instructions Dana sends. Nik was so kind of trying tyo guide me trhough it, but I believe I will do the whole amp mod instead. I will probably take out the MV control (wich I don't like at all) and use that place for the VVR.
The only use for the orginal MV I found was for bedroom level practice. But it doesn't do any good in terms of taming the amp at gig or band practice. I hope the VVR makes a difference...
Cheers!
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51
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Muchless / DC 30 / Re: Looking forward to building a couple of these
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on: November 25, 2009, 05:06:55 PM
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Hi Alwalt,
Hopefully the JJ EF806 tubes with the rings will do the trick. I will be designing a soft rubber mount for the tube socket and the idea of a deflector baffle to steer the speaker backwave away from the chassis should help too.
Have you considered wiring the 2 speakers in your cab in series rather than parallel? Two 8 Ohm speakers in series will turn your cab into a 16 Ohm cab. Then if you add another 16 Ohm cab on the other speaker output that will give a total nominal impedance of 8 Ohms. The trick is ensuring that the additional cab is 16 Ohms. Wiring a 16 Ohm in parallel with something other than 16 Ohms will give some unusual nominal impedance values.
Cheers,
Crusty
Hi Crusty, yes I am aware of the change on the wiring to vary the omhs of the cab. It is something real easy that I have not done, most by laziness, my bad... thou where I am using the amp right now even the half power setting is loud, so adding another cab (wich I'd love) is not a practical option by now. I am even waiting for some parts to install the VVR3 instead to tame the volume a little. Maybe having this mod done may allow the use of another cab, just for projection of the sound. It would be appreciatted if you post some pictures of the ruuber and the baffle. You can never tell when the EF86 is going to be picky... Regards! |
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52
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Muchless / DC 30 / Re: Looking forward to building a couple of these
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on: November 23, 2009, 05:28:38 PM
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well that uses to happen.. some guy Murphy wrote a word or two on the subject...
As for the EF86, I've been an strang animal, lucky as few because I am still running my stock EH EF86, without a single sign of microphony. I mounted my amp on a head, and it travles a lot to band practice weekly. Lucky me. (Nik sends rings with this tubes).
As far as it starts to wear, I'll go for that mullard. I still have another EH ef86 sitting there as backup.
Good thinking on the 16ohms... I did my 2x12 with 8ohm speaker (4ohm cab) and it's a pain to add other cabs...
I've seen in eurotubes site they have a substitute for the EF86, can't remember the model (EF806 or alike). They say it is better sounding and less micrphonic...
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53
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Website, Store / General / Re: RELIABILTY!
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on: November 13, 2009, 08:10:00 PM
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hi there Im new here...Im currenlty in search for a dumble and plexi replicas. a few friends of mine told me that ceriatone is the way to go..How ever Im still very In doubt of the quality and realiability of ceriatone amps.
You can buy the kits and do it yourself. If you are good at it, you should not have any problem. Or, buy the amp already assembled from Nik. A little expensier in terms of price and shipping, but you will find a perfect work on the inside. Every amp is tested before leaving. If you do that, when you get it and take a look inside, you'll know what we mean... |
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54
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Website, Store / General / Re: Help KIT Question?????
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on: October 30, 2009, 10:44:14 PM
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Yes, all those things are included. Package 1 will include everything to build a complete working amp except the transformers, tubes and cab.
I must add, Nik is the best customer service on the planet!
I have to add that Nik will help even in things that are beyond the amp sell. No customer service on earth could ever get close to his attentions. Kudos to Nik! I recently purchased a VVR kit from Dana, and have to be honest, Nik is the one that has guided me all the way. No cons to Dana (I'm a complete ingnorant on electric matters), but you can tell the difference. |
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59
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Muchless / DC 30 / Re: New Build
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on: October 06, 2009, 06:18:07 PM
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that is a pretty looking amp! your son is lucky you take your time to do this beauty.
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60
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British Style / 18 Watt / Re: How to use same effects on both effect loops with a LineSelector
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on: September 25, 2009, 06:39:13 PM
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1)both the send are mixed in the effect input
Both send are mixed in the LS2. The mixed output goes to the effects input. You can even control each send level doing this.
2)I use a single channel (ch1 or ch2)
If you use a single channel, there should not be a problem. It should work in a A/B/Y scenario.
3)only the ef86 receive a return....
Yep. The idea is to use the send of the top boost, mix it to the EF86 and retur both through EF86 return.
is the effect in the chain when I use the top boost channel?
yes
I hope it helps!
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to keep the forums alive.