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 Post subject: Re: Why Dumble?
PostPosted: Mon May 07, 2012 2:20 pm 
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Single Recto

Joined: Thu Jul 21, 2005 2:56 pm
Posts: 1691
Location: Pacific Coast
ChrisRocksUSA wrote:
the mesa boogie tremoverb is based off of a dumble
Can you explain this?

Other than cascading preamp gain, they don't have much similarity. My buddy built a Brown Note D'Lite which is a Dumble Clone and I have Trem-o-Verb. They are way different design.

I'd have to look up through my Guitar Player Magazine and MESA Flyers but the Trem-o-Verb was inspired by the Dual Rectifier. Add a "Blues Mode", tremolo and reverb to Dual Rectifier and you have a Trem-o-Verb.

The Trem-o-Verb was the predecessor of now what is the Road King. Some Trem-oVerb owners didn't completely understand the "cloning" concept so why not just add two more channels instead? => Road King, or Roadster.


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 Post subject: Re: Why Dumble?
PostPosted: Fri May 11, 2012 10:02 pm 
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Mark IV

Joined: Fri Oct 05, 2007 11:39 am
Posts: 755
Location: Park City, UT
ChrisRocksUSA wrote:
the mesa boogie tremoverb is based off of a dumble


I'd like to see that schematic. Not all that many Dumbles were built with reverb and not that it doesn't exist, but I've never heard of a Dumble with trem and reverb. I have two D-clones, one an 80's design called an ODS circuit, and another, 90's HRM architecture. Both have mods to the negaive feedback circuit to be able to switch in or out. That gives either amp the ability to sound like the best Marshall you ever heard, or smooth and creamy with the flick of a switch...and these amps take 6l6's or el34's. Bias is manually set. There is a certain type of tone set that is pasted all over the internet that truly succeeds in showing only a small part of the palette of what "Dumble tone" is all about, unfortunately, like here, there is a lot of herd following and repeated gossip about the Dumble thang. The fact of the matter is, not two of Howard Alexander Dumble's amps are exactly alike. They are custom voiced for the artist owning them. In some cases that means a special type of circuit. SRV used the Steel String Singer to record Texas Flood's music. The SSS is the very newest amp to come out in a D-style from Ceriatone, at present there are at least 7 variations of Duble clones in prebuilt or various stages of kits, plus the SSS which is sold prebuilt only. Also, the thing about a Dumble or D-clone is the FX loop add on, it is a very cool tube fx buffer, and it works wonderfully welll on my Mav too. D-style amps work best with them in most applications.

Better chance that a Fender AB763 circuit is the Tremoverb's daddy. Does the T-verb use snubbers on any of the preamp tube sockets like Dumbles often do?

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 Post subject: Re: Why Dumble?
PostPosted: Sat May 12, 2012 12:47 pm 
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Single Recto

Joined: Sat Dec 05, 2009 1:07 pm
Posts: 1340
The Tremoverb is simply a 2-channel Dual Rectifier with reverb and tremolo. (The Blues mode is just different internal settings.)

As such it is the descendant of the Dual Rec, the Soldano SLO, the Marshall 2203, the Marshall Super Lead, the Marshall JTM45 and the Fender 5F6-A Bassman, in that order going backwards. (Not an AB763 of any kind.) It's nothing remotely like any Dumble schematic I've ever seen, nor does it sound at all like the only Dumble clone I've ever played.

I assume ChrisRocks was having a bit of a laugh :).


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 Post subject: Re: Why Dumble?
PostPosted: Mon May 14, 2012 11:47 pm 
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Mark IV

Joined: Fri Oct 05, 2007 11:39 am
Posts: 755
Location: Park City, UT
Awesome! Thanks for the correction!

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 Post subject: Re: Why Dumble?
PostPosted: Thu Jul 19, 2012 4:59 pm 
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Mark II

Joined: Thu Jun 07, 2012 11:49 am
Posts: 100
I thought Dumble started with a BF Super Reverb and tweaked every component so he could tweak for a customer that wanted a specific sound.

And why they were so expensive.


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 Post subject: Re: Why Dumble?
PostPosted: Thu Oct 04, 2012 9:41 pm 
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Mark IV

Joined: Fri Oct 05, 2007 11:39 am
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Location: Park City, UT
Dumble did a variety of amps. Some of his earlier ones were Bass amps, with some Ampeg SVT influence in the PI section, but mainly the Bassman circuit was the daddy for his conversions, as well as the 80's ODS series, the Bassman iron was about the beefiest 2x6l6 iron Fender used.

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 Post subject: Re: Why Dumble?
PostPosted: Sun Oct 21, 2012 5:14 pm 
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Mark II

Joined: Thu Jun 07, 2012 11:49 am
Posts: 100
I am trying to decide whether I should mod my 64 Bassman to a Dumble using Fargen. The Dumble is cool on its own, but still not Dumble. I wonder can they mod the Bassman to either Steel String Sing or ODS?

The best, Ron


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 Post subject: Re: Why Dumble?
PostPosted: Tue Oct 23, 2012 12:21 pm 
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Mark IV

Joined: Fri Oct 05, 2007 11:39 am
Posts: 755
Location: Park City, UT
There are folks who can do that. Bassman/ODS is a no brainer to the right builder, See the Marsh Overlord. I have one in 50w and it's great. The SSS circit is very complicated and has several feedback loops as well as the entire inductor thang, It's reverb circuit is also more complicated than most, so it can be very expensive to prototype an amp using that topology.

A good bet would be Tony Albany at VVT amplification. He is one of several American "serious" D-circuit expert and is familiar with the problem solving doing them up as one off eyelet board builds or successfully adapting them to more cost effective mass production, but high quality.

His X-40 is very reasonably priced, wonderful sounding, and very controllable for the player, tone palette is huge. New one of those would be probably competitive value to a conversion dollarwise. Resale value is high percentage of new price on those. Another builder of D-circuits from donor chassis/iron that has got the conversion thang DOWN with great results for the money is Fuchs Amplification. Andy is a good monster. Also the tone giants like Henry at Red Plate, Shad Damron at Quinnamps, others I forgot, and the folks at Two Rock, of course.

There has never been a better time than today to pick up a boutique handwired tube guitar amp, the market is flooded and it's a buyer's heyday.

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 Post subject: Re: Why Dumble?
PostPosted: Tue Oct 30, 2012 7:23 pm 
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Mark II

Joined: Thu Jun 07, 2012 11:49 am
Posts: 100
I saw Fargen on some other Blog. I emailed him and he wants the bassman version and if ther were any mods done I wanted to know a Ballpark of what it would cost to convert. It sounds good the way it is, but it is not a Dumble.

Thanks, Ron


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 Post subject: Re: Why Dumble?
PostPosted: Fri Nov 16, 2012 9:32 am 
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Mark II

Joined: Sat Feb 07, 2009 7:38 pm
Posts: 111
And as always , there is nothing like being loud
It needs to be Loud , to be Loud [ at least enough to make things " Live " ]
that , helps out most demo's of things .

I remember seeing Robben playing a tele into a fender sitting in on a David sanbourn t.v. show
thin as anything , anyone know how much of the time he uses the zen drive ?


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 Post subject: Re: Why Dumble?
PostPosted: Tue May 14, 2013 4:06 am 
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Mark III

Joined: Thu Feb 07, 2013 10:45 pm
Posts: 221
This may be blasphemy but, from what I've heard, Dumbles have TOO much tone. I understand why people love them (they do sound great) but I prefer a little bit of edge to an instruments tone. The best way I can describe the Dumbles I have heard (which aren't many) is "pleasing." Am I mistaken or are they a one trick pony regardless of how amazing that one trick might be? Either way if I had $30,000 to spend on an amp I'd buy a classical concert guitar. ;)


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 Post subject: Re: Why Dumble?
PostPosted: Thu Apr 24, 2014 12:04 am 
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Mark I

Joined: Wed Apr 23, 2014 10:58 pm
Posts: 25
EtherealWidow wrote:
Why is it that no one can seem to replicate this amp? Why can no one get us the Dumble tone for less than $30,000?


Supposedly, Bludotone makes the closest thing to a real Dumble Overdrive. Someone has one on The Gear Page for $3500 presently.

That being said, many come very close, Ceriatone, Fuchs, Redplate, Glaswerks, Sebago Sound etc.

Redplate just might be a better amp than Dumbles ever were, no Dumbleator loop box needed.


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 Post subject: Re: Why Dumble?
PostPosted: Thu May 08, 2014 11:13 am 
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Mark II

Joined: Thu Jun 07, 2012 11:49 am
Posts: 100
I assume that Howard is controlling these through copyright litigation. Hence the large cost. A few years back I was digging for schematics on Dumbles. I got a warning from Howard that he didn't want me flooding the internet with schematics. I live in a small farm town and the likelihood that I will ever get to play through 1 is nil. Now that my LSS was fixed at the factory, I need to be happy with it as $30,000 is way too rich for my blood.


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 Post subject: Re: Why Dumble?
PostPosted: Sun May 11, 2014 3:29 pm 
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Mark III
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Joined: Fri Sep 21, 2012 6:23 am
Posts: 321
Location: New Zealand
rfrakes wrote:
I assume that Howard is controlling these through copyright litigation. Hence the large cost. A few years back I was digging for schematics on Dumbles. I got a warning from Howard that he didn't want me flooding the internet with schematics. I live in a small farm town and the likelihood that I will ever get to play through 1 is nil. Now that my LSS was fixed at the factory, I need to be happy with it as $30,000 is way too rich for my blood.

I'm not sure where you get this $30,000 from. Most of the real Dumbles being resold now are in the $50,000-100,000 range, but the quality clones cost far less than $30,000. Arguably the best are Bludotone and Fuchs. Larry Carlton has stopped touring with his Dumble and has been using a Bludotone "Bludodrive", their take on the Overdrive Special (ODS) circuit, for several years now. Last time I checked the Bludotone site I think the head is going for under $4,000. Not cheap, but certainly "within reach".

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 Post subject: Re: Why Dumble?
PostPosted: Sat Apr 04, 2015 9:00 pm 
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Mark I

Joined: Wed Dec 05, 2012 7:29 pm
Posts: 44
I always heard the Dumble amps kinda sounded like a silverface and a blackface cranked alitttle, but then you have people say ohhh the cleans.
All the ones I've heard have been recorded and they sound like a fender just breaking up.
I get that they are rare but come on just the same old bassman circuit re-done ...again.
Am I missing something. Cause I could be dead wrong...I mean cause I've never seen one ,let alone heard one live.
FUCHS is kinda like the new dumble as far as artist using them and talking dumble like tones.

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