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Little help for Luxman L-410

Icaka

Icaka

New Member
Hi, all. This is my first post in AK forum. I`m glad to be here and learning a lot of helpful things.
Now, I need a little help with my amp Luxman L-410. The problem is that the right channel is a little bit quieter than the left, especially in the low frequencies. I have defined this with the balance pot.
The speaker relay is changed, the input switch is very well cleaned, every potentiometer is lubricated, the thermal paste of the transistors is changed and some little capacitors.
Does anyone have an idea what can be wrong with this amp? Thanks in advance for your answers.
 
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Confirm that it's a preamp (tone amp, switches,,,) issue by using PRE-OUT/MAIN-IN, ie, connect iphone/ipod... at minimum
volume to MAIN-IN's and slowly increase volume. Channel inbalance still present? Otherwise you can use RCA cables to
cross from Left pre-out to right main in (and right pre-out to left main in), expect channel inbalance to change to other channel.
Vaguely recall there is a switch when running as separates.
 
mbz said:
Confirm that it's a preamp (tone amp, switches,,,) issue by using PRE-OUT/MAIN-IN, ie, connect iphone/ipod... at minimum
volume to MAIN-IN's and slowly increase volume. Channel inbalance still present? Otherwise you can use RCA cables to
cross from Left pre-out to right main in (and right pre-out to left main in), expect channel inbalance to change to other channel.
Vaguely recall there is a switch when running as separates.
Click to expand...
I will try this one tomorrow. This amp has a switch on the back panel, it`s called Signal Processing.
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I use now a DAC which is connected to the amp with RCA cable and with USB cable to the laptop. What will happen when I switch SIgnal processing pot to ON?
 
Last edited:
Thank you, Dswankey. Yes, I read the OM. So, today I`ve tried this option. I switched the Signal processing pot to ON and connect my laptop through the DAC to MAIN IN input. I think, the amp work fine now. Maybe the problem is somewhere in preamp section.
 
^ I'm glad to hear you got things working, as to a possible problem in the pre-amp the only thing I could think of was where you had the DAC connected originally when you were using it prior Signal processing change.
 
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