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Author Topic: Dumble Overdrive Special  (Read 17881 times)

shobet

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Dumble Overdrive Special
« on: January 24, 2010, 11:38:49 PM »
I was bored and stumbled across this site http://personalpages.manchester.ac.uk/staff/rob.livesey/dumble/

Number 124 will be interesting for you builders out there I'm sure http://personalpages.manchester.ac.uk/staff/rob.livesey/dumble/Dumble%20%230124/

I was quite amused that whoever prepared the schematics had gone to great lengths to remove the blue and black gloop that had been put on to disguise the circuit. I can understand Dumble trying to protect his designs but putting that shite all over the boards makes it almost impossible someone else trying to repair an amp to do their job. It annoys the $%&# out of me when I get it in a pedal as it means I can't repair it myself. I paid for $%&#ing thing I'd like to be able to fix it if it breaks. I'm almost positive some makers put it on their stuff to stop people seeing that they've ripped it off some older design.

There's even a nice schematic there for all you amp builders out there.
http://personalpages.manchester.ac.uk/staff/rob.livesey/dumble/Dumble%20%230124/dumble_124_schematic_172.pdf

 
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Those who do and those who do not.

MDV

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Re: Dumble Overdrive Special
« Reply #1 on: January 25, 2010, 12:03:54 AM »
http://www.youtube.com/watch?v=iVTj08qTwGw

Crystal lattices destroy electrons....okey dokey. 

MDV

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Re: Dumble Overdrive Special
« Reply #2 on: January 25, 2010, 12:06:33 AM »
Oh, dont want to piss on anyones chips, I just have trouble believing that that guy, talking out of his arse in that vid, is anything other than overhyped by a handfull of people that like the amps to whom money is no object, and a few more that need to convince themselves as much as anyone else that their 30,000 pound amp has magical powers.

Afghan Dave

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Re: Dumble Overdrive Special
« Reply #3 on: January 25, 2010, 12:13:00 AM »
If it makes you sound like this... I'd prefer a Marshall MG15Dfx  :lol: :lol:

http://www.youtube.com/watch?v=l1qCczGgSxw
"There's more knowledge on these boards than there are necks under PhillyQ's bed"

MDV

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Re: Dumble Overdrive Special
« Reply #4 on: January 25, 2010, 12:20:59 AM »
If it makes you sound like this... I'd prefer a Marshall MG15Dfx  :lol: :lol:

http://www.youtube.com/watch?v=l1qCczGgSxw

MY EARS!!

If thats what happens when you let the electrons live then count me out - kill em all.

shobet

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Re: Dumble Overdrive Special
« Reply #5 on: January 25, 2010, 12:35:29 AM »
http://www.youtube.com/watch?v=iVTj08qTwGw

Crystal lattices destroy electrons....okey dokey.  
Fruit cake no doubt, but he's also eaten all the fruit cake by the looks of it. If it's not electrons that are flowing through the silicon in my Mac, then what is, raisins and glace cherries?

If it makes you sound like this... I'd prefer a Marshall MG15Dfx  :lol: :lol:

http://www.youtube.com/watch?v=l1qCczGgSxw

Is that guy off Play School? It sounds like some of my home recordings when playing whilst drunk.
There are 10 kinds of people who understand binary.
Those who do and those who do not.

Afghan Dave

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Re: Dumble Overdrive Special
« Reply #6 on: January 25, 2010, 12:42:52 AM »
I've got tears rolling down my face from laughing

WATCH THIS!  :lol: :lol: :lol: :lol: :lol: :lol:

http://www.youtube.com/watch?v=1lozkT1zrIU
"There's more knowledge on these boards than there are necks under PhillyQ's bed"

Keven

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Re: Dumble Overdrive Special
« Reply #7 on: January 25, 2010, 12:57:53 AM »
this illustrates two rules of amp servicing:

1) don't touch the thing with both hands
2) don't talk to someone while touching the thing

only then can you get shocked and laugh about it :P

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shaman

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Re: Dumble Overdrive Special
« Reply #8 on: January 25, 2010, 01:28:25 AM »
wow...a Dumble dissin'?
"...major scales...what's that??"- Doug Aldrich
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Philly Q

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Re: Dumble Overdrive Special
« Reply #9 on: January 25, 2010, 01:34:29 AM »
If it makes you sound like this... I'd prefer a Marshall MG15Dfx  :lol: :lol:

http://www.youtube.com/watch?v=l1qCczGgSxw

I've been reading Guitar Player interviews with Henry Kaiser for years and always thought he seemed quite a cool chap.  But this is the first time I've ever heard him.  :?

To be honest, both those video clips feel like comedy sketches....



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Dmoney

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Re: Dumble Overdrive Special
« Reply #10 on: January 25, 2010, 04:11:13 PM »

I love Kaiser's face at the start of this.
He plays a bit, stops, and then the look on his face of "oh yeah... i DID just go there!" kills me every time

http://www.youtube.com/watch?v=OWsaSphPvXM

shobet

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Re: Dumble Overdrive Special
« Reply #11 on: January 25, 2010, 04:29:32 PM »
I've gotten into a little friendly debate on another forum about what fatso has been saying about electrickery and I'm being told that he is correct about the way that 'fragile harmonics' can't survive in crystal lattices. I need someone with brains to clear this up for me.

They've also not answered my point about electrons disappearing in a crystal lattice. Scr@ping the bottom of my brain for the remnants of any education and some of the physics that may have sunk in during my time looking after rather large computers for a physics dept. Are the only things that cancel out electrons positrons?

So anyone come to the aid of a damsel *cough* in distress. If it helps, they are yanks.
There are 10 kinds of people who understand binary.
Those who do and those who do not.

Afghan Dave

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Re: Dumble Overdrive Special
« Reply #12 on: January 25, 2010, 05:15:25 PM »
YANKS! Yanks you say!!!

MDV, we need you...


"There's more knowledge on these boards than there are necks under PhillyQ's bed"

MDV

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Re: Dumble Overdrive Special
« Reply #13 on: January 25, 2010, 05:18:42 PM »
Electrons are fundamental particles. They cant be destroyed, or made to dissapear, save by meeting anit-electrons (positrons). For that you need some considerably more sophisticated tech than a transistor or two, and you'll get radiation poisoning from the gamma rays produced by the annihilations.

MDV M.Phys (hons) ;).

And somewhat out of my comfort zone, but I at least believe I know this -

On the 'fragile harmonics' - bollocks. Transistors preserve far more information than valves, with next to zero distortion of any harmonic unless they clip (which is as we all know another story). Valves compress the waveform a little even when not clipping and in fact never perfectly relay a signal.

And if 'fragile harmonics' cant be preserved in crystal lattices, then how the $%&# do little chunks of millions of transistors running to a clock that ticks a couple of billion times a second not lose data?

Hes blustering (dumble that is), likely off the top of his head with nothing more than passing familiarity with the terminology of Condensed Matter and hoping that hes well enough protected by reputation and acolytes for it to pass unnoticed, or even supported.
« Last Edit: January 25, 2010, 05:20:14 PM by MDV »

MDV

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Re: Dumble Overdrive Special
« Reply #14 on: January 25, 2010, 05:19:47 PM »
YANKS! Yanks you say!!!

MDV, we need you...




dadada DAAAA!

(typed the above before you posted. Kinda wish I waited now, I'm sure I could have phrased the whole thing more humourously if I'd had that posters inspiriation)