HELP TwoRock HRM Slope - Check pic & report value

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erwin_ve
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by erwin_ve »

SoundPerf wrote:Well I'm not going to draw this out and beat it to death and "hijack this thread". I have done research. So answer this. Is there more then one place on an amp design where the term slope resistor would be used? See if I was actually describing mods or possible mods on a public forum I would be much more specific in my desciptions. I'm speaking generally here and not necessarily directing this at Blues or at this specific situation. But there's many times that I have wanted to ask questions that I admit of are a more primary level and haven't becuase of the general tone that is often the case here. And while you want to convince me that I'm being overly sensitive and huffy, I know I'm not alone in my feelings.

As we all know writing on internet forums can get messy when implicatons are applied that are not correct. Maybe I'm guilty. It wasn't so much the "lethal voltage" thing. It was more the, and I'm paraphrasing here, "if your amp already gets killer tone than don't worry about it". I took this as "don't waste my time with your silly simple questions when I'm working on a real serious tone quest".

In my intital question, I was speaking more to the single coil aspect that I see so many complain about. I haven't had any issues with this and I too was curious about what makes this the case. Or maybe it's really not an issue and just lack of knowing how to get good tone from an amp.

So, I'm going to assume that I have to go read every tube amp book and become so capable that I really wouldn't need to ask any questions here before I can ask any questions here. :roll:
What's your question exactly :twisted:
A slope resistor is the resistor that leads towards the tone stack.
In a dumble design it's right after the coupling cap v1. Additional in a hrm there's another tone stack which also has a slope resistor.
attached a pic with a fender tonestack;
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hans-jörg
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by hans-jörg »

Hi gents,
it looks like its definitly the MONDAY wich makes everyone thin coated. Including me.
BUT its tuesday now, time for sirious and stupid questions (wich are mostly mine :wink: )
BTW I build up 5 amps til now (5W to 30W) and now this Dumble (100Watts) but its first time I read about SLOPE resistor - ad definitum (or so). It was always the R in front of the tone stack. I read first time here in this forum the term and didnt know whats that. But after a while I understood (I didnt ask, sorry).
But thats not the point. reader here are from level almost 0 up to overqualificed and therefor its no reason for nobody to be thin coated.
I love the forum, not the guys, so what?

Just my 2ct.

Hans-Jörg
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SoundPerf
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by SoundPerf »

What's your question exactly :twisted:
A slope resistor is the resistor that leads towards the tone stack.
In a dumble design it's right after the coupling cap v1. Additional in a hrm there's another tone stack which also has a slope resistor.
attached a pic with a fender tonestack;
My question.
Based on the layout of my amp, which two components are you referring to regarding the "slope resistor" and "midcap"?
I think it was very simple. I wasn't asking what a slope reistor is, or a lesson on the dangers of tube amps, or whether I should bother to mod my amp or not. I was simply asking which two components he was exactly refering to. I even put a layout of my specific design to make it as easy as possible to answer, because I understood that the question wasn't the most complex or a great benefit to most others. Although it appears that it was more complext then I realized.

The deal is, I have electrical experience in areas (high speed digital design) that I'm sure some of the very educatated amp builders here would not have a clue what I was talking about. I certainly wouldn't hold that against them. The world of technology is so vast that it's quite impossible to be a pro in every area. I'm at a time in my life that I can take time to explore an area that was always of interest to me, but haven't had the time to really get into deeply. I have been a guitar player for many years and always was interested in amps, but left them alone for the most part. I dealt with frequencies in the GHz not Hz to Khz. And the specifics of the issues I dealt with were of a differenct nature most the time.

I had a question, that's all. If you can't be honest with yourself and see that the response I got was more then just the answer, well there's nothing I can do about that.

P.S.
Realize also that this response it to all the other responses I got of a similar nature or worse as the original.
Chris
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erwin_ve
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by erwin_ve »

Soundperf: I was thinking the question"Is there more then one place on an amp design where the term slope resistor would be used?"was still open.
So I responded to that. But your question was more/less hidden in your reponse, that's why I used the :twisted: icon. I'm not really trolling here but helping. I hope the slope thing is clear for you now. Have a nice day!
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SoundPerf
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by SoundPerf »

erwin_ve wrote:Soundperf: I was thinking the question"Is there more then one place on an amp design where the term slope resistor would be used?"was still open.
So I responded to that. But your question was more/less hidden in your reponse, that's why I used the :twisted: icon. I'm not really trolling here but helping. I hope the slope thing is clear for you now. Have a nice day!
That was more of a rhetorical question in a later post to sort of make a point that my original question might have been more ligitimate then at first glance. :)

It's good. And thanks for taking time to post a very clear answer. I suppose some will come here and not be grateful for the time given by others. But I want it to be known that I totally appreciate all the help that is given and grateful to get it.

I guess I always live by the motto given to me from a great teacher I had years ago. "There's no such thing as a stupid question....they're much easier to handle than stupid mistakes".
Chris
jestaudio
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slope resistor

Post by jestaudio »

got to admit the term slope resistor had me a bit stumped untill i could relate it to a diagram(us auto electricians like diagrams) but i am curious as to what difference changing the value of the resistor and mid cap would have as a rule of thumb :?:
And before it becomes a issue i work regularly in the KV range of voltage :D
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Structo
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by Structo »

Here is a great tool that you can experiment with and see the results plotted on a graph in real time.

You ask, what happens when I increase the slope resistor value?

Well you can do it on this program and see the results. :wink:

http://www.duncanamps.com/tsc/
Tom

Don't let that smoke out!
jestaudio
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Re: HELP TwoRock HRM Slope - Check pic & report value

Post by jestaudio »

Structo wrote:Here is a great tool that you can experiment with and see the results plotted on a graph in real time.

You ask, what happens when I increase the slope resistor value?

Well you can do it on this program and see the results. :wink:

http://www.duncanamps.com/tsc/
Nice one,thanks
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