The Amp Garage

Looks great!

To qoute a Lowell George song: "I read the papers and got the blues, so sad to hear the news..." I have been a Dumble user since 1979, playing my beloved Overdrive Special (2nd gen) in clubs, bars, churches, jails and recording studios, and will continue to do so. I corresponded with Mr. Dumble from...

Between 1978 and 1981 I had several long phonecalls with Wolfram Roy of Applied Acoustics/Kitty Hawk, and also visited their shop a number of times. He basically said that he thought he could make something like the ODS a lot of cheaper, hence the Kitty Hawk "Standard", which must have been the firs...

FWIW, Tony, although I cannot vouch for every detail, I believe in the amp I played the slope resistor was the usual Sprague Q-Line, 150k 2% tolerance. Hope this is helpful

I´m a little late to the party. Anyway, here´s my .02 cents: I did play a real Dumble High Plate Classic once. A long time ago, but I remember it as being very versatile, good with both single coils and humbuckers, and not too bright at all. In my own experiments, though, I never liked the 150k slop...

My .02 cents: As the owner of a 2nd generation ODS since 1979, I totally agree with Tony´s observations. Yes, these amps do sound very 3D at stage volumes, imho they need to be played at about the volume of a rock drum set in order to really shine. At bedroom levels, they are far less impressive. Th...

Here´s my .02 (euro) cents ( .0235 USD ) : Tony´s and Charlie´s post sum up everything I´ve learned in the past 41 years about the Dumble (clean) tone, I agree 100 %. My conclusion: While Dumbles are, more or less, capable of producing Fender-style cleans, a Dumble is not really a Fender, nor was it...

#121 is set up in a similar way. Don´t ask me how I know

So it's been a while since I played my 2nd Gen I pulled it out again just to refresh my memory and have to say that with all the faults in that stack in the way of control it does have it's own character to it and works really well with both clean and OD sides so I don't really find myself needing ...

Here´s what I would do ( and have done on my 2nd gen amp): Lose the .02 cap on the bass pot (wiper to 10k resistor) , if it is in your amp . This way, the tone stack will be fairly close to the Skyliner, tonally. Also, the mid pot will be much more effective. I also used the Skyliner stack in my am...

Here´s what I would do ( and have done on my 2nd gen amp): Lose the .02 cap on the bass pot (wiper to 10k resistor) , if it is in your amp . This way, the tone stack will be fairly close to the Skyliner, tonally. Also, the mid pot will be much more effective. I also used the Skyliner stack in my am...

Here´s what I would do ( and have done on my 2nd gen amp): Lose the .02 cap on the bass pot (wiper to 10k resistor) , if it is in your amp . This way, the tone stack will be fairly close to the Skyliner, tonally. Also, the mid pot will be much more effective. I also used the Skyliner stack in my amp...

Tony, sorry for the late reply, I was busy with other affairs....No, this is not the amp I played, it was a 1x12 combo in a hardwood cab, with a EVM 12 inch speaker. AFAIK it is still somewhere in my vicinity, i.e. southern Germany. Sold for 800 DM then (late 90s) , appr. 400 USD

Here we go again: I have posted my memories about the Roy brothers several times. I bought my personal OD 50 in 1979 and visited their shop a number of times. As far as I know, Ervin is correct, the Roy brothers imported a number of Dumbles (estimated 20-30 amps) between 1977 and 1980, most of them ...

Charlie, FWIW, my personal amp (1979 50 Watt ODS) has 22k as the V1a grid stopper. I have experimented with this value on other amps, I especially remember changing this resistor on a PRS Sweet 16, which had 50k there, and I was amazed at the difference in tone when changing to smaller values. I fee...