infinity SUB-100 junior II

[boset]

Hi
i have a problem with transformer for infinity SUB-100 junior II
It is a plate active sub-amp (around 120w rms)

transformer is start failing, Overheating (burned Thermal Fuse)

i will order new toroid transformer version, But i don't know how many Ampers i need to run this amplate properly.
manufacter doesnt put marking for Transformer....

i replace termal fuse, and make measuring on output:
2x34,33V and 2x17,15V (without load)

This may help:
http://4.bp.blogspot.com/-Y7C4xBv54cY/VHqb0ECW37I/AAAAAAABGY0/73ACa6ig1uQ/s1600/oiwer+amp.jpg
http://2.bp.blogspot.com/-S1Y3STCdZuk/VHqcOSOamtI/AAAAAAABGY8/4_8N2_DvQUw/s1600/pre-amp.jpg

http://diagramas.diagramasde.com/audio/ATX 100 SUB service manual.pdf

So i basicaly need 2x35V and 2x18V ?? (what about Amps??)

 

[Keruskerfuerst]

110 W power transformer and then you can calculate.
~10W for 2x18V -> 0.3 A
~100W for 2x35V -> 1.5 A

 

[boset]

Keruskerfuerst thanks for quick reply

Are you sure that will be enough power

more pic:

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[boset]

Keruskerfuerst thanks for guide. I Fixed The problem 🙂

I ordered 200VA Toroidal Transformer

2x35 V – 2A
2x18V – 0,5 A

work perfectly