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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
erik_squires OP
16,122 posts
 
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.
adamwheel's avatar
adamwheel
9 posts
 
Is using the "recorder out" an option for connecting subwoofers?  It can be turned on and off and would solve my problem.
erik_squires OP
16,122 posts
 
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.

adamwheel's avatar
adamwheel
9 posts
 
Sounds like an RCA switch for subwoofers may be my best bet.  Anyone have one they recommend?
erikt
269 posts
 
What about connecting the pair of SB3000’s to both the Denon and the Luxman?

Subwoofer output from the Denon to each of the LFE inputs on the subs, the Left line level from each of the Luxman preouts? (Sub 1: Luxman Left preout, Sub 2: Luxman Right preout).

When using the Denon in HT Mode, the Luxman will be in Separate mode and the Luxman preouts will be disabled and the subs will be driven/controlled by the Denon’s subwoofer out.

When using the Luxman for music, sources will be directly connected to the Luxman, the Denon turned off and the subs will be driven/controlled by the Luxman preouts.
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