Luxman Integrated L-480 DC/Bias Adjustments

[Fhamre]

Hello
Any body have or know where to find the instructions on doing the amp and power supply adjustments on a Luxman L-480?
Thx

 

[ryuuoh]

I've looked around, there's not much info on that unit.
Generally speaking the DC balance adjustments are at the input of the driver circuit, and the bias is near the outputs.
Good luck, that's a nice amp.

 

[Fhamre]

I have never done much work on a Luxman piece before.Certainly a different design and layout than I am used to. I will likely give it a go with out instructions in a couple of days. Don't want to mess this unit up as it is a really sweet integrated.

 

[ryuuoh]

Take some pics of the driver boards, and maybe some of the techs will give their observations about adjusting it.

 

[Fhamre]

Good idea.
Here is a pic. You can see the VR's to adjust.
The upper pair say "IO Adjust". The lower pair "L&R Out"

 

[Ruxman]

Are you having troubles with the amp, or is it running well?

 

[Fhamre]

Yes, it is running fine. I just always like to set to factory specs. Haven't even measured the DC offset,yet.