Hi, I have an old 70's Traynor amp I made a couple simple mods to ( split acthodes with plexi values, Marshall tone stack and O.T )
I am realy diging the tone I get, but it is very STIff , is there a wau to loosen-up a tube amp's feel
This runs a pair of EL34s, SOlid state rectified and no choke.
ANy pointers appreciated
How to Lossen-up a tif amp ?
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Stevem
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Re: How to Lossen-up a tif amp ?
How loud do you play the amp, do you gig with it or only home play?
How many speakers do you play the amp thru?
Two things come to mind , you could get a attenuator to go between the amp and speaker, and this will let you dime the amp and get sag out of the power supply which will soften up the amp, but this comes along with distortion which you may not want.
You could cathode bias the output stage which will soften it up and use a switch to have normal or cathode biased, or you could do the cathode bias thing and get a attenuator.
How many speakers do you play the amp thru?
Two things come to mind , you could get a attenuator to go between the amp and speaker, and this will let you dime the amp and get sag out of the power supply which will soften up the amp, but this comes along with distortion which you may not want.
You could cathode bias the output stage which will soften it up and use a switch to have normal or cathode biased, or you could do the cathode bias thing and get a attenuator.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: How to Lossen-up a tif amp ?
value of coupling capacitors can be increased 2 times and see the result
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Stevem
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Re: How to Lossen-up a tif amp ?
That amp already uses .1 caps feeding the output stage!
You would not want to go any higher unless you want the low end to fart out as the amp is turned up.
In fact for smoother break up the OP might want to drop these two caps down to .022 uf!
You would not want to go any higher unless you want the low end to fart out as the amp is turned up.
In fact for smoother break up the OP might want to drop these two caps down to .022 uf!
Last edited by Stevem on Wed Sep 29, 2021 11:34 am, edited 1 time in total.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: How to Lossen-up a tif amp ?
output stage should be never touched, preamp need to be regulated, bigger caps, lazier sound,
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Stevem
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Re: How to Lossen-up a tif amp ?
You have some very very strange notions about amp when it comes to the OPs requirements of softening up his amp!
Have you ever heard of bias shift and blocking distortion, or better yet have you played a Amp that has this issue beginning at a certain volume level?
It does not sound to me like you have!
Have you ever heard of bias shift and blocking distortion, or better yet have you played a Amp that has this issue beginning at a certain volume level?
It does not sound to me like you have!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: How to Lossen-up a tif amp ?
thanks to you all. Just to clarify, WHat I am looking for is a softer, spugier feel in general.
THe amp is very clean and starts breaking up only whaen cranked past 6 or 7 ( out of 10 )
but it remain quite stiff all along as if there never is any voltage drop even with loud bass heavy content.
ANother way to put it is it is to tight.
I noted the caps on the power supply are 80Uf + 80Uf wehre a Marshall 50 watt would use 50 + 50
Would droping those in value acheive my goeal ?
THe amp is very clean and starts breaking up only whaen cranked past 6 or 7 ( out of 10 )
but it remain quite stiff all along as if there never is any voltage drop even with loud bass heavy content.
ANother way to put it is it is to tight.
I noted the caps on the power supply are 80Uf + 80Uf wehre a Marshall 50 watt would use 50 + 50
Would droping those in value acheive my goeal ?
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ijedouglas
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Re: How to Lossen-up a tif amp ?
Reducing the filter caps would probably introduce more sag in the amp and would be the first place I would look to try something. If you have 2 50s drop them in and see
Ian
Re: How to Lossen-up a tif amp ?
ok all , for me is the same i dont change one wordStevem wrote: ↑Wed Sep 29, 2021 11:36 am You have some very very strange notions about amp when it comes to the OPs requirements of softening up his amp!
Have you ever heard of bias shift and blocking distortion, or better yet have you played a Amp that has this issue beginning at a certain volume level?
It does not sound to me like you have!
Re: How to Lossen-up a tif amp ?
Agree - change 80+80 to 50+50.
SS rectification contributes to stiffness. Haven't been inside a Traynor, but it should have a power resistor in lieu of a choke. You could also increase value of that resistor in order to lower overall voltages, but make sure it is of sufficient power rating.
SS rectification contributes to stiffness. Haven't been inside a Traynor, but it should have a power resistor in lieu of a choke. You could also increase value of that resistor in order to lower overall voltages, but make sure it is of sufficient power rating.
Re: How to Lossen-up a tif amp ?
Ordering a couple 50Uf caps right now !
I'll let you guys know. THnk you !!
I'll let you guys know. THnk you !!
Re: How to Lossen-up a tif amp ?
In the absence of the schematic, this thread seems something of a nonsense.
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thetragichero
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Re: How to Lossen-up a tif amp ?
being familiar with the poster from the marshall forum, it's a traynor yba1. schematics went through many iterations, but same basic idea (and nice of them to staple it to the top of the case): https://www.thetubestore.com/lib/thetub ... ematic.pdf
PRR wrote: Plotting loadlines is only for the truly desperate, or terminally bored.
Re: How to Lossen-up a tif amp ?
I am also curious of How to determine the Mid pot range. How would I move the center frequency of the mid pot towards bass just a tad ?
Re: How to Lossen-up a tif amp ?
very easy, dwnl here https://www.duncanamps.com/software.html t.stack simulator, find your preffered tone stack, and play little bit with values ..