"70ies circuit Bludodrive"

[Max]

Hi,

does someone know which kind of circuit (tone stack etc.) the Bludodrive amp has, that is discussed here: http://www.thegearpage.net/board/showth ... p?t=781266
and demonstrated here: http://www.youtube.com/watch?v=CNuVfyQv2AA here: http://www.youtube.com/watch?v=7NuDnwgnTA4 and (mp3 clips) here: http://www.thegearpage.net/board/showpo ... ostcount=5

I have attached the pictures that have been posted here http://www.thegearpage.net/board/showth ... p?t=781266 that you know what I am talking about.

I ask because in this Gear Page thread it is called a "70ies circuit Bludodrive" amp. But it has no deep switch, a preamp boost, a separate OD volume, a presence control and what (to me at least) looks a bit similar to a precision power supply? But on the other hand this was obviously the owner who wrote that it has a "70ies circuit" and he will probably know what he has bought? Does someone know what sense all this makes?

Cheers,

Max

[Bob-I]

Great sounding amp for sure.

If you can't learn the circuit from the pictures I think you're gonna be out of luck. Brandon builds amps for a living and it would be a bit rude to post the circuit.

[Max]

Great sounding amp for sure.

If you can't learn the circuit from the pictures I think you're gonna be out of luck. Brandon builds amps for a living and it would be a bit rude to post the circuit.

Obviously Brandon thinks different. Otherwise he would not have shared all these Ojai info. But of course I respect your opinion. And no, I am not able to learn circuits from pictures.

And perhaps you did misunderstand me anyway. I did not ask for a schematic but: What kind of Dumble ODS circuit is this a replica of:

1st generation pre-classic
2nd generation pre-classic
3rd generation pre classic
transition generation low plate classic

And I am rather sure that this kind of info would not do any harm to Brandon's succes.

Cheers,

Max

[Bob-I]

Great sounding amp for sure.

If you can't learn the circuit from the pictures I think you're gonna be out of luck. Brandon builds amps for a living and it would be a bit rude to post the circuit.

Obviously Brandon thinks different. Otherwise he would not have shared all these Ojai info. But of course I respect your opinion. And no, I am not able to learn circuits from pictures.

Cheers,

Max

Maybe I'm wrong, but the last time I talked to him (over a year ago) he was a tad annoyed with this stuff.

I wish we could learn what's in this amp too, really sounds great. That Lindley / Dumble tone I.E. Running on Empty solo, is one of my all time favorites and this one is as close as I've heard.

[ChrisM]

Max why do you always get hung up on generations and be true to exact known amps?
Most amps seem to take classic designs and tweak from there for the best tone for the player. That would be my guess as to what this amp is.

Great tone btw.

[Structo]

I don't see any clips, but then again I'm still working on my first cup of coffee.

[Bob-I]

Max why do you always get hung up on generations and be true to exact known amps?
Most amps seem to take classic designs and tweak from there for the best tone for the player. That would be my guess as to what this amp is.

Note that Dumble did the same thing. Every amp was unique.

[Max]

Max why do you always get hung up on generations and be true to exact known amps?
Most amps seem to take classic designs and tweak from there for the best tone for the player. That would be my guess as to what this amp is.

Great tone btw.

And what kind of "classic design" has been tweaked in this amp:

- the classic design of the 1st generation pre-classic amps?
- the classic design of the 2nd generation pre-classic amps?
- the classic design of the 3rd generation pre-classic amps?
- the classic design of the transition generation and 4th generation low plate / high plate classic amps?
- the classic design of the 5th generation skyline amps (Brandon's has a "Mid" switch)?

Again my question now, but asked in a way you may perhaps prefer:

Which one of these five different "classic designs" has in your opinion been the starting point "to tweak from here for the best tone for the player"?

Cheers,

Max

[Zippy]

Brandon builds amps for a living...

And it shows. Gorgeous build quality.

[talbany]

100 Watt 70's.. Boing!!

Reminds me of the late great John Candy in Uncle Buck where he's flipping the 20 lb pancake and mumbles.."Yep this is where you seperate the men from the boys"..

Tony

[Max]

100 Watt 70's.. Boing!!

Reminds me of the late great John Candy in Uncle Buck where he's flipping the 20 lb pancake and mumbles.."Yep this is where you seperate the men from the boys"..

Tony

And what is it what you call a "100 Watt 70ies". Can you perhaps post a picture of an example or a link to a picture of an example for such an "100W 70ies", or perhaps post a series number of an example for what you call a "100W 70's"?

Thanks and all the best,

Max

[Bob-I]

100 Watt 70's.. Boing!!

Reminds me of the late great John Candy in Uncle Buck where he's flipping the 20 lb pancake and mumbles.."Yep this is where you seperate the men from the boys"..

Tony

And what is it what you call a "100 Watt 70ies". Can you perhaps post a picture of an example or a link to a picture of an example for such an "100W 70ies", or perhaps post a series number of an example for what you call a "100W 70's"?

Thanks and all the best,

Max

Head over to the files section, several pics and schematics posted there

[Max]

Head over to the files section, several pics and schematics posted there

Hi Bob-I,

Could you perhaps be so kind and post a link to such a pic? Just one to one example for what Tony and you call a "100W 70ies". There have been very different 100W ODS amps in the 70ies. And because of this I am still at a complete loss what Tony and you are talking about exactly? Just one example for such a kind of "100W 70ies", please.

Thanks a lot in advance,

Max

[dogears]

Looks like the stack, the trigger, the grid resistors, and PI are 70s. Can't say which, but definately 70s. Teh power supply is probably not the tonal determinant here. So, it is a modern hybrid of the 70s with all essential 70s values there.

I ask because in this Gear Page thread it is called a "70ies circuit Bludodrive" amp. But it has no deep switch, a preamp boost, a separate OD volume, a presence control and what (to me at least) looks a bit similar to a precision power supply? But on the other hand this was obviously the owner who wrote that it has a "70ies circuit" and he will probably know what he has bought? Does someone know what sense all this makes?

Cheers,

Max

[talbany]

100 Watt 70's.. Boing!! 8) 8) 8)

Reminds me of the late great John Candy in Uncle Buck where he's flipping the 20 lb pancake and mumbles.."Yep this is where you seperate the men from the boys".. :lol:

Tony

And what is it what you call a "100 Watt 70ies". Can you perhaps post a picture of an example or a link to a picture of an example for such an "100W 70ies", or perhaps post a series number of an example for what you call a "100W 70's"?

Thanks and all the best,

Max

Max
Sure.. The 70's term is a kind of car name thats been thrown around here for some time..Since no one really say's it's 2nd Generation classic w/70's OD entrance w/ 3rd generation OD volume control and Presence in a 100w..whatever.. we stick a car name to it..
So what defines the 70's stigma!!
It's mainly directed at 3 most defining circuits
1... The 3 resistor OD entrance setup(trigger) that gives it that unique OD character..
2...The Classic Stack (In what ever form)
3... 12AT7 PI
4... The Look


My Proof..If you take a look at the #13 layout made in 77 (which I cannot post sorry).. It uses the 3 resistor OD setup and the classic stack..(There may have been others) #13 was an ODSR but still both OD entrance and classic stack and AT PI were born from the 70's..Since the classic stack took on various forms and pot values you couldn't just say classic..I know these were used in the later 80's amps as well but came from the 70's designs..apply car name..

Tony