treble bleed?

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ayan
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Re: treble bleed?

Post by ayan »

glasman wrote:
ayan wrote:
Structo wrote:I believe that Gil advises putting it on the level pot.

But he puts it on a small daughter board at the 180K resistor that goes to the level pot input.
Not really. "My" treble bleed goes on the RATIO control, on the Lead Master Volume, etc. That is, it ties to the 150K output resistor at V2B. The further down the road you put the treble bleed, the richer the harmonic content of the tone IMNSHO.

Gil
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pine
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Re: treble bleed?

Post by pine »

Thanks very much for the help, that's where I'll put it

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talbany
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Re: treble bleed?

Post by talbany »

I believe that Gil advises putting it on the level pot.

But he puts it on a small daughter board at the 180K resistor that goes to the level pot input.


I know this topic has been brought up a few times as I get confused with it at times.. I would think the Ratio/level should be labled the other way around being that the level really should be the OD level---Master vol for the od and the ratio should be the same as the drive or gain ratio...Hey most likly was thinking ratio between the clean and overdrive volumes...still they both effect the amps volume level.. whatever... Maybe thats what you ment...


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Structo
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Re: treble bleed?

Post by Structo »

Still confused see below.
Last edited by Structo on Wed May 06, 2009 6:17 pm, edited 1 time in total.
Tom

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Structo
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Re: treble bleed?

Post by Structo »

ayan wrote:
Structo wrote:I believe that Gil advises putting it on the level pot.

But he puts it on a small daughter board at the 180K resistor that goes to the level pot input.
Not really. "My" treble bleed goes on the RATIO control, on the Lead Master Volume, etc. That is, it ties to the 150K output resistor at V2B. The further down the road you put the treble bleed, the richer the harmonic content of the tone IMNSHO.

Gil
OK, I re-read your correction but I am still thoroughly confused.

Are we talking about #124 topology?

You say it goes on the Ratio pot, which is tied to the 100K pin 6 of V2.
Then you say the "on the lead master volume", which is the level pot,
150K pin 1 of V2.

Then there is what are we calling V1a and V1b. Since HAD oriented the tubes with the b side being staged first.......
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Tom

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talbany
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Re: treble bleed?

Post by talbany »

Tom

I did the layout and it is wrong...Like I said CONFUSED!!! I think I revised that layout to read the other way around...Sorry!!! If you don't have it let me know and I'll update it for you!!

Here is the Ceriatone
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talbany
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Re: treble bleed?

Post by talbany »

here is the updated one...If you notice the Ratio is a 250...
I have a post here where Gill stated the ratio on 124 was a 250... If it's wrong I'll update it... Sorry for the confusion!!



Tony VVT
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Structo
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Re: treble bleed?

Post by Structo »

God......now I am really confused.

The new layout has the Level and the Ratio pots reversed.

On my D'Lite I have a .005uf and 180K (150K on #124) on V2b (pin 6) to the input of the Level pot. On the D'Lite both Level and Drive are 100K.

And Pin 1 V2a, .01uf, 100K to the Drive pot.

On the new #124 layout it shows the 150K going to the Ratio pot and the 100K going to the level pot.

[IMG:42:31]http://i23.photobucket.com/albums/b392/ ... f12184.gif[/img]
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Structo
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Re: treble bleed?

Post by Structo »

After getting bleary eyed looking at different layouts, I am think the D'Lite layout is not right.
The Ceriatone layout has the tubes oriented like mine.

The Level pot input should be coming from the 100K resistor on V2a pin 1.

On my D'Lite the Level pot is fed from the 180K resistor from pin 6.

Something is not right.

Maybe you can help me by comparing this layout to the OTS layout.
I am getting really confused.
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talbany
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Re: treble bleed?

Post by talbany »

I don't know how the Dlite is set up...The revised one I just sent is correct..
Od entrance off the trimmer/68 k v2a out through the .01 - 100k off to the 100k level..out of the level to v2b 180k grid..out to .005-150k to entrance to ratio or master volume for the OD..out of the ratio to the relay...Like I said Gill stated in one of his posts that the ratio or master for the OD was a 250k...which I personally like better than the 100k..so updated it this way..I did a Natichas D-copy this way and works well.. The D-Lite must be different...



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Structo
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Re: treble bleed?

Post by Structo »

What I'm wondering is if the labels for the pots are confused.

As I have never played a D clone or OTS.

For example on my amp the Level adjusts the volume for the OD channel.
The Drive adjusts the amount of overdrive present.

That's different from what you guys are talking about right?
Tom

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talbany
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Re: treble bleed?

Post by talbany »

Looks like the Dlite layout is slightly different..I think the chassis was done to the later D-labeling... I THINK!!.. the only difference in the Dlite being the 180 Level feed slightly larger.. most likley to help focus the tone being a lower powered amp .. Same sort of thing with the 100k master keeps the OD tighter when you run it up... same topology though..




Tony VVT
talbany
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Re: treble bleed?

Post by talbany »

See!!
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Structo
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Re: treble bleed?

Post by Structo »

OK Thanks. I think... :lol:

Just so we are absolutley clear.

On the older Dumbles such as #124 the Ratio is the OD Master Volume and the Level is the amount of overdrive, right?

If that is true than I am OK, it's just that on the D'Lite they labeled the MV for the OD Level and the amount of overdrive Drive, that's where the confusion lies.
Tom

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talbany
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Re: treble bleed?

Post by talbany »

Correct!!..
The later ones had the OD master labled as Level..Which makes more sence to me... speaking for those who don't know anything about amps.. (not that you are one of them)

The earlier ones had the OD master labled Ratio... Maybe he accidently had them printed backwards and was stuck with them.. Who knows..
Sorry again for the confusion..


Tony VVT
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