My symamp (pics)

[Andypairo]

Here are the photos of the Holton's symamp I've built some time ago and now is under re-styling to become a friend's beloved amp

Pic 1 closeup of the board

 

[Andypairo]

Pic 2 general view

 

[Andypairo]

Capacitor bank.. thank you Mattyo5!

That's all for now...

Cheers

Andrea

 

[peranders]

Your transformers seems to be very small unless you don't want this amp to be a party animal.

 

[audioPT]

Yes,

I think the xformers can't charge de capacitor bank fast enough when some kick sound comes through the amp.

BTW, what are the caracteristics of the xformers?

Regards

Pedro Martins

 

[Andypairo]

Maybe they are shy and partly hidden themselves when they saw the camera

They are 46V 300 VA each, I think quite enough for any use... I should get about 40Vrms max of output -> 200W / 8 Ohm.

Last time I tried it at a friend's house(where it will be placed) using a smaller trafo with lower rails the cat had run away long before we turned the knob to nearly half power .

Cheers

Andrea

 

[peranders]

They are 46V 300 VA each, I think quite enough for any use... I should get about 40Vrms max of output -> 200W / 8 Ohm.

Are they labeled 300 VA? I think they more look like 120 VA or so.

 

[Andypairo]

Yes, they are labeled that way.
They are only slightly smaller than some other 300VA I have, but the label is quite explicative...

Cheers

Andrea

PS In this picture it seems much bigger

 

[peranders]

Oki doki, they looked small. Maybe the lens (wide angle)?