Tube Amp Archive

The prototype of this amp had all the bells and whistles, rock/jazz bright, deep, mid boost, once they figured out what EG liked all those settings where most likely hard wired, my self I would add the switches for flexibility and secondly because we don't know for sure what setting were used. It's...

I'll throw this out there just from my experience with straight HRM and BM HRM builds. There is a reason that most production builders when they incorporate the HRM tonestack controls, they put them on the front panel. If you like to turn knobs ocassionally you might be highly disappointed that you...

By the sound clips and videos I prefer the HRM Skyliner cleans (the standard HRM) and the HRM Bluesmaster power section so I'm in two minds at the minute. As a FYI, the clean channel bypasses the HRM, which is an extra TMB EQ located at the output of the overdrive section. It is only in the circuit...

Tim is this your first amp build? Just had a look at the HRM MkII that looks like a better choice actually, I didn't notice that before. That plus dual tube rectifier will get you nearly there. Get that working, and then once you've got that far you can tweak the OD section until you get that highe...

Ok, from the looks of things, I would start from either of the HRM or Bluesmaster. Listen to some on youtube and decide which you prefer. Grab yourself a Mercury Magnetics PT transformer appropriate for this build. They have ones specifically for Ceriatone. Drill holes for this rectifier PT somewhe...

To pick a small nit, it's the different tube types that have to cope with the impedance presented by the output transformer, not the other way 'round. A 4k primary will work fine for both 6L6 and EL34, and if the sockets are wired correctly swapping tube types only needs a re-bias. What power trans...

That is simply the best answer I could of asked for, explained perfectly thanks again Colossal you certainly know your stuff, I know I'm going to learn a great deal from this forum! :wink: So in regards to make this sound like the EG Two Rock, the Tube Rectifier is doable but the rest seems like imp...

[/quote] No offense meant to Ceriatone, but I would definitely go with either a Mercury or Magnetic Components. Quality for either brand is very high, tone is very, very good, and the money and jobs stay in the US. Mercury also offers a guarantee that if you don't like the tone of your chosen part, ...

so then there is another bridge to cross to convert from 6L6 to El34/GZ34. Just a reminder ;)...6L6 and EL34s are power tubes. GZ34 is a rectifier tube. The rectifier's sole function is to convert AC power to DC. This can be done via solid state diodes (e.g. 1N4007, UF5408, etc) or a vacuum tube (G...

Currently got my pen and paper out designing! Hey Matt, how you coming along with your design for the Tube Recifier, is there a way of converting the standard Ceriatone HRM from SS to TR? The reason I say the standard Ceriatone HRM is because its based on the Skyliner circuit which after hours of l...

So a few questions.. Does this seem like the way to go to make this a higher gain amp? What would you change and play with in regards to the "snubber values"? If I ask the amp to comes with a bypass mod that bypassed the power amp tone stack is it easily made foot switchable to the same foot switch ...

Hey Guys I've been emailing Nik from Ceriatone with the same question at hand here is what he had to say :) Tim Thanks Sure thing. The easiest way to increase gain on the HRM is to mod it to have a switch to defeat the HRM tonestack. We usually do it 3 way. Ie, defeated, partially defeated, and stoc...

Collossal - Have you build an ODS with tube rectifiers? If so what PT did you use? I've been having a look for one with a 5V 4A tap this afternoon and can't find any! Most have a the 5V tap for the relay but it's 3A. No I haven't. I have not dabbled in Dumbleland yet, but certainly not for lack of ...

Colossal - Thank you for that, I have read that the tubes you use in this amp with the tube rectifier does make a HUGE difference to the overall sound of the amp. The Mullard 5AR4's is what I was looking at as they are what people have recommended but the price tag is steep! Then again if that's wh...

[/quote] Yeah, those Mullards don't come cheap anymore but man, they sound good. The good news is that they are a strong investment and you should own them for a very long time, if not a lifetime. It's hard to commit a lot of cash to just one aspect of the amp like that but my personal view is that ...