[Paul Running]

I refer to an oxidized contact as a dirty resistor because that is basically what it becomes.

Everything has resistance, even clean contacts.

 

[Dirtghost6]

Long story short... If possible id like to try to mellow out the stiff/immediate /glassy/clangy nature of my TRAYNOR YGA-1A head.
Its a beautiful amp but would love it if it were a bit more "smooth/velvety" in the mids/highs.
Ps- i run it with treble literally on 1 maaaaybe 2 but even then its pushing it.

- are there any mods that could help?
I was thinking the bright cap mod might be a good start.

-im using a vintage traynor 1x15 cab with stock marsland 15" speaker😢
Please suggest a new 15" speaker to help mellow out the stiff mids/highs?
I was thinking celestion fullback 15"? maybe or just eminence legend 15"?
Something else 🤔?

Id also like some sort of 12" cab down the road so what 12" speakers could similarly help tame the stiff high mids/highs

 

[Latole]

Long story short... If possible id like to try to mellow out the stiff/immediate /glassy/clangy nature of my TRAYNOR YGA-1A head.
Its a beautiful amp but would love it if it were a bit more "smooth/velvety" in the mids/highs.
Ps- i run it with treble literally on 1 maaaaybe 2 but even then its pushing it.

- are there any mods that could help?
I was thinking the bright cap mod might be a good start.

-im using a vintage traynor 1x15 cab with stock marsland 15" speaker😢
Please suggest a new 15" speaker to help mellow out the stiff mids/highs?
I was thinking celestion fullback 15"? maybe or just eminence legend 15"?
Something else 🤔?

Id also like some sort of 12" cab down the road so what 12" speakers could similarly help tame the stiff high mids/highs
View attachment 616586

Read that ;

http://www.0rigami.com/vb/mods.html

 

[Paul Running]

the stiff/immediate /glassy/clangy nature

After you have selected the speaker and installed it:
Check the plate-current of each output tube...likely they are operating on the cold-side.
If they are, add circuitry that will enable you to adjust the bias of the output tubes...I would do this regardless of the outcome.
In order to set the bias a bit warmer, which will alter the sound of your amp, you may have to alter the plate and screen voltages to keep the output tubes in a safer operating area, unless you are willing to sacrifice tubes for tone.
One solution is to retrofit the rectifier to tube-type, which will mean the addition of a 5VAC transformer to power the filament/cathode of the rectifier tube(s); this will also alter the tone of the amp...it will loosen it up. I would go with a dual-rectifier setup, using two tubes.

 

[Latole]

After you have selected the speaker and installed it:
Check the plate-current of each output tube...likely they are operating on the cold-side.
If they are, add circuitry that will enable you to adjust the bias of the output tubes...I would do this regardless of the outcome.
In order to set the bias a bit warmer, which will alter the sound of your amp, you may have to alter the plate and screen voltages to keep the output tubes in a safer operating area, unless you are willing to sacrifice tubes for tone.
One solution is to retrofit the rectifier to tube-type, which will mean the addition of a 5VAC transformer to power the filament/cathode of the rectifier tube(s); this will also alter the tone of the amp...it will loosen it up. I would go with a dual-rectifier setup, using two tubes.

Good advice,
Con ; most of guitar players do no know how to adjust bias , many do no know what is bias.