#26 pre amp

[merlin el mago]

I connected pin -3 of TVC to pin 14 of my attenuator, I assume is wrong: where have I to connect?

 

[nicoch58]

Dear merlin btw is 26 pre amp.....open new ones....

 

[merlin el mago]

Dear merlin btw is 26 pre amp.....open new ones....

You are right, I'm sorry for a lot of OT.

 

[nicoch58]

well at last tell what difference vs pot ....

 

[merlin el mago]

well at last tell what difference vs pot ....

I'm not sure if it's well connected, if is well connected I prefer the carbon pot or better the attenuator with resistors.

 

[stajo]

How are you connecting the TVC Merlin? Before the 26 (on the grid) or after the 26 (after the cap or OPT, whatever you have)? What are you loading its primarys and secondarys with?

As many has said Before. A FULL scetch would help us help you. Otherwise we dont know if you have missed a grid leak or whatever it can be. A full scetch with the TVC.

 

[merlin el mago]

After the OPT, I'm sorry I don't understand 2nd question.

Attached schematic used in my 26.

I will draw schematic of how is wired TVC.

 

[stajo]

If the TVC is coupled on the "switch" icon, then it is on gnd only.

 

[merlin el mago]

Actual wiring TVC one channel shown

 

[merlin el mago]

If the TVC is coupled on the "switch" icon, then it is on gnd only.

So have I to use without the switch?

 

[stajo]

So have I to use without the switch?

Of course not. You still havent published a full schematic with the selector and TWC.

 

[merlin el mago]

I don't use selector. Yes I posted how is wired the TVC see post 3409.

 

[merlin el mago]

Attached schematic how is wired my TVC

 

[merlin el mago]

I don't understand the attached image.

Now I understand the schematic post 3397

 

[merlin el mago]

I think the problem is at the attenuator, I will investigate.

 

[genehlaing]

i recently got turned on to Rod Coleman`s regulator thread & earlier i got the Ronan reg. boards to use w/ 26 linestage (VT-52 Jim deKort`s design) & now i wanted to know how i`d go about acquiring Coleman`s heater bords? thanks.

 

[merlin el mago]

i recently got turned on to Rod Coleman`s regulator thread & earlier i got the Ronan reg. boards to use w/ 26 linestage (VT-52 Jim deKort`s design) & now i wanted to know how i`d go about acquiring Coleman`s heater bords? thanks.

Send a PM to Rod Coleman is a forum member.

 

[merlin el mago]

My mistake was not to connect pin -3 TVC to input RCA, now is sounding beautiful, a lot better than with a carbon pot or a resistor attenuator thanks Thomas

N.B. wired 2 dBs steps

 

[Vinylsavor]

Hi Felipe,

glad that you fixed the TVC and like the sound now. I will email your for the rewiring to 2dB/steps. That is too off topic here

Thomas

 

[merlin el mago]

Thank you Thomas.