stratpaulguy86 wrote:SOFTMC wrote:SOUND S GREAT
some clips would be even greater glad you are happy
with this amp did you get a good deal on it?
I was looking at two rocks but they are too dear for me.
which ceriaton dumble circuit is closest to the 2rock
Derek
I didn't really get much of a deal on the amp but it was a fair price. Clips are on the way, as soon as I get some time. School is wrapping up 
and free time is on the way. Two-Rocks are very nice and are built like tanks so as an investment if you can pick one up used at a good price they are a solid amp. IMO they are very overpriced when bought new. I hear these Mayer fanboys raving about them and they are getting the same clean tones that you could out of an old silverface/blackface twin or showman. If that is the tone you are looking for save the $$$ and get an old Fender or clone. As far as Ceriatone's go, I would probably say that the new HRM Bluesmaster is the closest to the Two-Rock sound. I have read on numerous forums from guys who understand the circuits that Two-Rock more or less pirated the Bluesmaster circuit for most of their builds (Custom, Prototype, Custom Clean, Custom Sig Reverb I&II, Opal, Emerald etc). I could be wrong though and am not an authority on the Dumble thing. All I know is that when I mix my 100 watt Marshall and HRM 100 together it's magical. I can't recommend the Ceriatone Overtone high enough. Oh and the cleans on my HRM100 kill my old '65 Twin Reverb Reissue BTW. You cannot underestimate the Overdrive Special cleans!
The main difference with the so called 'Bluesmaster' circuit is basically the component values of the phase inverter drive circuit.... ironically exactly the same that Marshall adopted from virtually the beginning of their existance, along with the feedback and presence circuit. Dumble and countless others, myself included, have used this circuit, it's especially good for driving EL34's. The Marshall Jubilees use virtually the same values to as do Plexis etc etc etc. There's nothing new about a long tail pair phase inverter, it was invented before electric guitars. To say Two Rock stole it is like saying GM pirated the idea for having a round steering wheel.
There are a couple of other minor tone stack differences you see that get thrown in with the 'Bluesmaster' circuit. However, these can be seen on a number of non-Bluesmaster amps to. You can be sure that the term 'Bluesmaster' came out of an internet forum and not from Alexander.
As for the non-Bluesmaster PI circuit. It's virtually a Blackface Twin Reverb PI. So Dumble actually used standard circuits that were/are commonplace with both Fender and Marshall as well as many other Manufacturers.
It's fair to say that TR have certainly been inside a number of Dumbles, but most of their product line up until recently has been a derivative of non-HRM models and almost always 6L6 based.
I'm not defending TR, I couldn't care less what they use, just setting straight some incorrect / assumed technical information and the use of phrases like 'pirate'.
The problem I have with technical internet amp forums is that everyone is an expert and if it's written, it's correct. I have stopped participating and giving technical information on any of these forums, it's a waste of time and frustrating.
Alan.
