2. amps-preamps
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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

Showing 9 responses by adamwheel

adamwheel's avatar
adamwheel
9 posts
 
I read they were still  "active" in the original post.
adamwheel's avatar
adamwheel
9 posts
 
Thanks for the help.

I'm now ready when the box comes through the door this week.

Cheers!

Adam
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.
adamwheel's avatar
adamwheel
9 posts
 
That's a good thought.

I was also thinking of using speaker B outs on Luxman with  a speaker level to line level converter then rca to the subs.

Speaker B out of Luxman can be turned on and off as needed as I understand it.
adamwheel's avatar
adamwheel
9 posts
 
I'm hoping to get some feedback here as I just purchased the 509X and it ships out Monday.

I have a new Denon 4700H and plan for the 509X to power my front channels (Focal Aria 926 towers) in my home theater.

My primary 2 Channel listening is my Marantz TT-15S1 turntable

Issue:  I want my two SB3000 subwoofers incorporated into both home theater and 2 channel listening.

1.  Preouts from Denon front channels to "main in" on 509X for home theater where Luxman powers front channels.

2.  Turntable to "Phono In" on 509X

3.  Do I have this right?  "Preout" on 509X back to the Denon analog input.

In this situation, Denon is involved discretely in preamp mode but wouldn't my sub preouts on Denon supply a signal to both subwoofers in home theater and 2 channel listening?

Sorry for the lengthy post but I wanted to be clear and get any feedback I could.

Cheers and thanks in advance!

Adam

adamwheel's avatar
adamwheel
9 posts
 
Sounds like an RCA switch for subwoofers may be my best bet.  Anyone have one they recommend?
adamwheel's avatar
adamwheel
9 posts
 
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.
adamwheel's avatar
adamwheel
9 posts
 
Are you sure the pre-outs are disabled when in separates mode?
adamwheel's avatar
adamwheel
9 posts
 
That makes the solution easier thanks.  

Which scenario is best then:

1.  Just send left preout to left sub and right preout to right sub.

2.  Run adapters and splitter from each preout to send right and left to both subs eventually through one line level rca.  I have what's needed to make this happen.

Thanks for the detailed help.

Adam
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