TSSA - The Simplest Symmetrical Amplifier

[Esperado]

I think the PSRR is okay.
Distortion into 10K is a little higher but better roll off.

Nothing to complain 🙂

 

[Esperado]

Suitable for headphone amp.

I don't think so. Imagine, a Porta Pro, with a 60ohm impedance witch increase as frequencies increase, how can be the response curve ? May-be a good way to add some trebles 🙂

 

[Jay]

I don't think so. Imagine, a Porta Pro, with a 60ohm impedance witch increase as frequencies increase, how can be the response curve ? May-be a good way to add some trebles 🙂

Yes yes yes... May be it is one reason why there is no bass in headphones 😀 I have a good Senheisser but NEVER use it except for testing.

 

[Idefixes]

I just have to mesure BC560 and BC550, all others are yet done.

Marc

Hi LC
BC550/560 are matched yet so all my transistor are matched...I'll need yet to drill pcb board and i can begin with oarts soldering.

Marc

 

[Lazy Cat]

Hi LC
BC550/560 are matched yet so all my transistor are matched...I'll need yet to drill pcb board and i can begin with oarts soldering.

Marc

OK, please attach your sch according to PCB was made and I'll circle the parts to start with. 😉

 

[Idefixes]

OK, please attach your sch according to PCB was made and I'll circle the parts to start with. 😉

Here it is

 

[Lazy Cat]

Marc, here we go with CCS1, CCS2, CCS3. All the parts inside red circles have to be soldered to one channel PCB only. 😉

 

[naf]

Wow... idefixes starting to build his TSSA

 

[Idefixes]

Wow... idefixes starting to build his TSSA

Yessssss, parts have sleep enough in box....

Marc

 

[naf]

Yessssss, parts have sleep enough in box....

Marc

i'll follow this thread as LC is the one who will guide building step 🙂.. i'm sure i'll learn something new....😎

 

[Idefixes]

i'll follow this thread as LC is the one who will guide building step 🙂.. i'm sure i'll learn something new....😎

No doubt about this...

Marc

 

[Idefixes]

So after about 2 hours work, the 2 TSSA Pcb and the soft start PCB are drilled and tinned. They will go for white painting...


Marc

 

[supernet]

I am thinking of doing a 2 stage tssa preamp.

Great idea 🙂 Maybe it would be better to open a new thread...

 

[Lazy Cat]

So after about 2 hours work, the 2 TSSA Pcb and the soft start PCB are drilled and tinned. They will go for white painting...


Marc

They will be perfect in white, hope that there will be no big modifications since this is still prototype only.

BTW, would not white colour stuff the drilled holes? 🙄

 

[Idefixes]

They will be perfect in white, hope that there will be no big modifications since this is still prototype only.

BTW, would not white colour stuff the drilled holes? 🙄

I just paint the component side not the underside with spray dose...

Marc

 

[Lazy Cat]

Yes I know, still can be stuffed from the top, only if drilled after the spraying?

 

[Idefixes]

Yes I know, still can be stuffed from the top, only if drilled after the spraying?

For Quasi board i do the sae way without issue.

Marc

 

[sonnya]

Great idea 🙂 Maybe it would be better to open a new thread...

Sure i will, but at present i have an openloop gain of ~30dB. I would like to end up with 50 - 60dB in openloop gain. ..

Besides the openloop gain is flat to 10KHz....

 

[Idefixes]

Here they are

Marc

 

[Lazy Cat]

White PCB top looks so clean and emphasize installed's parts marvelous colours. The last time I made white PCB was for ProJet Power Module in 2007.