Output transistors for YBA Alpha1 power amp

[mallikh67]

Hi. I need to know what are the output transistors of YBA 1 alpha . as i wanna buy them and hold as spares for future fail.

thanks

 

[adason]

Look inside.

 

[mallikh67]

its written yba on them.thats why searching for original nos

 

[Mark Tillotson]

Can you figure out which are NPN and which are PNP even?

NJW3281G / NJW1032G are good general purpose output devices with decent and sustained gain.

I found a diagram for the YBA 2 alpha online which showed a very bog-standard 3 stage design with dual EF outputs, I suspect its a similar design and EF output stages are fairly forgiving.

 

[mallikh67]

hi if u dont mind can u share the schematic of yba 2 alpha power amp

 

[limono]

I would be interested too in the schematic. I pulled recently my delta 2 HC out of storage and it sounds sluggish with farting bass. Kind of disappointing really compared to what I remember years ago when it was in the system . Probably re-cap is due.

 

[Mark Tillotson]

I just googled it, "YBA alpha schematic" or some such.

 

[mallikh67]

thanks for the help. but i wanna know the original output transistor nos of yba 1 alpha thats what i am looking for it. if u get any info do let me know