Topic: DIY 6SL7/2a3 SET Project

[parasound]

Thanks Loi, will do that. Inip na nga ako, sana December na bukas. Nakaka home sick tuloy. Miss ko na mga alaga ko. Mabuti ka pa every weekend nahihimas mo volume knob ng 45 mo.

Nald,

Do not connect your safety gnd and your signal gnd directly together.
Your safety gnd should be as short as possible connected directly to your chassis.
Then the center tap of your power transformer connected to the first negative terminal of the filter capacitor.
Do not use this as the start of star gnd since this is the noisest. Tap another wire going to the 2nd filter capacitor. This point can now be considered as the start of star gnd or gnd bus.

From the 1st capacitor terminal, install a gnd loop breaker circuit to connect to chassis for safety.

Your audio circuit already indicated which terminal need to be connected to gnd bus. Just follow it and you will be good.

Cheers.

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[parasound]

Yes sir Tony..

yes, safety ground connects to one of the bolts holding the IEC power inlets,
it is bolted to the chassis at that point...this protects the user from shocks in case there is a power leakage to chassis...

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[parasound]

Correction.. mali yung 1st layout drawing ko





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[tony]

if you are up to it, you can use a video pentode instead of the 6sl7,
to really push the 2A3 around, a strong driver with lots more
current than the 6sl7 can provide is desireable...
 

[parasound]

Like 12GH7 sir tony?


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[tony]

yes...12by7, D3a, 12HL7 etc...even the el84 will do nicely...

[parasound]

ok sir, will experiment later pag na perfect na itong circuit na ito,

thanks.

yes...12by7, D3a, 12HL7 etc...even the el84 will do nicely...

[parasound]

Update..
Rewiring done by Mr. Felix, Thank you very much po sa wiring and NOS Mullard GZ37










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