Hacking a Luxman Integrated


One cool and often under appreciated feature in Luxman integrateds is the "Separate" button. It disconnects the preamp from the amplifier, allowing for a number of approaches. Actually this is two features. One is the always active preamp output available on the back.

The second is the ability to feed the amp directly, bypassing everything in the preamp. Useful features:
  • Add room correction/EQ/active crossover in the middle.
  • Passively bi-amp (without using separate)
  • Feed a subwoofer (without using separate)
  • Use amp for home theater
  • Use ~ 0.047uF cap to add a high pass to your Luxman, letting you feed a sub for everything below 80 Hz.
  • Use ~ 1uF or higher to add some flavor to the sound. 
It has me thinking about using it with my sub for 2 channel again. :)


Best,

E
erik_squires
I currently (without the 509X) use the CD source on my Denon which connects to my phono preamp.

Can I continue that exact path but just send the preouts from the Luxman to the CD input on the Denon?  If so, wouldn't my subs then work.

My goal is to use both subs in home theater and 2 channel listening but I do not want the Luxman compromised at all.

Thanks for the quick reply.
Adam,

Yes, but you are now bypassing the Luxman Pre which is a huge contributor to the sound.
Here's what I suggest:
Try both ways for the CD, without a sub.  If you don't hear a difference, and are just going to use the Luxman as a straight 2 channel amp, then your path makes sense.
Is using the "recorder out" an option for connecting subwoofers?  It can be turned on and off and would solve my problem.
Is using the "recorder out" an option for connecting subwoofers? It can be turned on and off and would solve my problem.

No, it's before the volume control.

Sounds like an RCA switch for subwoofers may be my best bet.  Anyone have one they recommend?