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[col]

OK, thanks for your explanation. It's very easy to get paranoid about counterfeit parts nowadays.

col.

[col]

I'm using 2x40Vac 500VA toroid, PS10K80 psu (upgrade caps to 18mF x 6pcs) and TA3020 amp..

xaudiox, are you using a softstart module on your amp?

col.

[xaudiox]

i dont used softstart.. thanks

[col]

do the lights go dim when you turn it on?

Iv'e been using these:

http://www.ska-audio.com/diy/softstart.html

The kit is very cheap and effective. No need for an additional winding or a separate transformer.

Maybe christi could come up with a connexelectronics softstart

col.

[xaudiox]

Originally posted by col
do the lights go dim when you turn it on?

yes..

i'm still trying to find suitable softstart..

thanks

[e_fortier]

Keep it simple with 1 passive component, it is called NTC.

See link ; http://www.ametherm.com/Inrush_Curre...rrent_faq.html

These are used by many manufacturer and they work great.

Eric

[xaudiox]

My TA3020 Amp is playing for 2hours now with moderate levels..

I've measured the temperature of the heatsink and its around 57-58degrees Celsius ..

I can only put my fingers on the heatsink for 3secs..

I will put a small fan to help lower the temp.

thanks

[col]

Finally managed to get rid of the ground loop/hum and now have my TA3020 in my tri-amp system powering my compression drivers. Some photos of the amp are here:

http://minirig.org.au/2009/02/14/min...ripath-ta3020/

please leave comments on the blog

col.

[båndsei]

Col, do you have any problems of overheating.
Nice work.

[col]

Col, do you have any problems of overheating. Nice work.

No, I have no overheating problems at all, the heatsink is warm but not hot, I can easily leave my hand on it without having to take it off.

I am only running my amp at low voltages (42-43v) though and at the moment it is only powering the high frequency drivers in a tri-amp system, so it really is not doing a lot of work. Also, my case has very good ventilation.

col.