Two Rock Classic

[v00d00blues79]

I would assume that Rawnster = Ron.


Andy

[rawnster]

Ron's a great guy...cut him some slack.

Who's Ron?

Larry

That would be me.

[v00d00blues79]

Welcome Ron!

Thanks,

Andy

[rawnster]

It's not a dumble-voiced amp at all...at least to my ears. There are very nice early fender to marshall tones all over the place in that that amp. Also, takes pedals very well.

Anyway, thanks for letting me in!

You are describing what a good DUMBLE or D'clone can sound like, in addition to those early fender/marshall sounds it can also get what you call "dumble-voiced" sounds. I'm suprised your TR doesn't get them - I think those amps were based on the Dumble design.

I've tried to dial up smoother, creamy, to-the-edge-of-overdrive, but not over the top, yet sustains nicely with an almost feeding back into itself type reaction. But it's not really there. This amp is more rauchous and rock-n-roll...at least the for the most part. This being said, I can get hint of something smoother out of the clean channel when pushed hard. I apologize for my difficulty in explaining what I hear.

[Funkalicousgroove]

Don't get me wrong, I am not against anyone who wants to learn being here, But having someone tell us that their Two Rock is "Not Dumble Voiced" I just wanted their background to qualify such a statement.

I HAVE played/De-Gooped a few Dumbles, and have seen inside a number of Two-Rocks, and am QUITE CERTAIN that it is in-fact a Dumble Clone with a few teeny tweaks here and there.

I really don't want to see this place become the Gear page or worse Harmony Central. As the sub title says on the very screen you are looking at "A tube amp builder's community" and I am all for that.

Welcome Rawnster, I'm not a dick, sorry if I came off that way, but after reading all the uninformed posts on other forums lateley I am a bit on the defense-

I hope you gain some insight here, and please do ask questions!

[dehughes]

Interesting, Funk. So you posit that the Classic Type 3 is indeed a Dumble knockoff with some tweaks? Or were you referring to a different Two-Rock model? I'm under the impression that their Emerald Pro model (now discontinued) was the Dumble-ish one, yes? This was the first Two-Rock I've ever played, and I've never played any Dumble amps, so I'm curious.

We peeked inside Ron's (Rawnster) amp and the build quality was super nice, especially considering all that was going on inside there. It is hard to get an idea of the components used, as they've intentionally mounted many of the preamp components on the underside of the board. So, I can't even compare the pictures of the components to any of the Dumble schematics I have.

I'm interested to hear what you all think...

[snider]

I believe the Type 3 ( I have one) is a very distant cousin to the Kimock TR. The Class A setting and some of the mini toggles (negative feedback etc) and some other tweaks make it quite different than the Kimock model. The other major difference is the two rectifier tubes. The footswitchable FET and bypass (mine is hardwired to access the midboostat the same time when footswitched) can give this amp a big ass Marshall vibe when paired up with a Marshall cab or similar. The amp has extreme versatility from clean to mean and the response and feel is similar to a real good Dumble. Great Cleans and lead tones. Very cool amp IMHO.

[Funkalicousgroove]

Post some gut pictures of it, that is what this place is about.

[dehughes]

Post some gut pictures of it, that is what this place is about.

Ron will have to do that...he has a few nice ones.

[Funkalicousgroove]

I've seen some pics of one, the caps are on the under side of the board, but it has some tell-tale signs of dumble, Grid resistors with bypass caps, local feedback on V1b, an FET board straight out of an ODS. They may have added a couple things like a treble cut circuit ala Vox and a fixed presence control, but the foundation is certainly Dumble.

[Bombacaototal]

The only picture I have seen of the contour circuit looked like a full on wired presence cuitar (1uf cap across the 390 resistor) and a VOX cut circuit that was copied from an AC30. I think the AC30 (or maybe AC15) were the first amplifiers to make use of the PI cut ccircuit.

A .001uf in series with a 250K pot betweeen the PI output couplers and voila you now reinvented the VOX cut circuit. FWIW, Ken Fisher and Komet also used this circuit..... so did matchless and a HOST of others.

Take a look at the AC30 schematics available. Pretty simple

Contour just sounds COOLER than cut....

Gary

Hi Gary, the Manual description of the contour follows

Contour Control- The contour control is an active wide band sweep. In the 12 o’clock position, the amp’s frequency response is flat. Counterclock- wise rotation reduces high end response and increases low frequencies. Counterclockwise rotation decreases low end and increases the high fre- quency response. This control is very useful for maintaining preamp tone control settings, while allowing a global adjustment to compensate for dif- ferences in room acoustics, speaker cabinets, or bright to dark guitars (PRS Humbucker to Strat, for example). This control also actively reduces the articulation available, allowing a softer setting, or extremely open and revealing, depending on your individual style and requirements.

I am not sure how one would achieve this wide band sweep with just a cut control. Did anyone find more details about the contour?

[Bombacaototal]

double post

[stephenl]

Sounds like a tilt control.

[stephenl]

Tilt control