Lumin, Leedh’ing the way

Then your issue is with the difference in the volume level between different mastering engineers. Same issue as with playlists or Internet Radio. And yes going to XLR will get you 6db more gain.
 
chungjh said:
No, I am using RCA. Would this make a difference? Yes, the max volume % is 100%. So, the problem is when the next album comes on, the volume is through the roof.
Click to expand...

Please power off your whole system, disconnect RCA, and use XLR only. It should sound better too (after some burn-in if you have never used it).
 
Wow! I can't believe how much better my system sounds with the Lumin X1 going straight to my amps using the Leedh for volume control.
Never going back to using a preamp!

ozzy
 
I owned the Ayre KX-5 Twenty. An awesome preamp. But I really only used one input.
The Leedh volume setting requires a little extra fiddling but I think I have the hang of it now.

ozzy
 
wklie said:
Please power off your whole system, disconnect RCA, and use XLR only. It should sound better too (after some burn-in if you have never used it).
Click to expand...

With XLR, Janos Starker sounds a bit louder but still not loud enough. My feeling is that LEEDH volume control is sufficient for most albums, but not all. I need my preamp to cover all albums available.
 
Some albums have such a low recording level, that they require a little bit of preamp gain. Bill Berry's 'For Duke' is one such album, off the top of my head.
 
gabweb said:
Because I have a preamp (Luxman C900) I don’t use the Leedh feature
and the volume is fixed at maximum.
So the change is in the new firmware and not only when using the Leedh control

PS: live in Israel but I was born in Buenos Aires
nací y crecí en villa Urquiza y mi familia vive ahí
Un saludo
Click to expand...

Gabweb

Have you ever compared with or without c900 in the path? X1 directly to amp. I would be curious about what your experience is. Assuming impedance matching or volume control is no problem, I wonder if we are just coloring the sound with the preamp.
 
For Lumin U1 and U1 MINI users:

I have a beta firmware that may have a minor improvement for those using AES / BNC / coaxial / toslink (i.e. not USB) output especially when using Leedh Processing Volume. PM me if you like to try it.
 
I have a bit of a different setup where my LUMIN D2 XLR’s go to a DSPeaker anti-mode 2.0 room correction processor and from there, XLR’s to the inputs on my Simaudio Moon i7 integrated amp. My amp has a feature to bypass its volume control. This would allow me to use the volume control on the LUMIN. However, although the volume control of the preamp is bypassed, the preamp section of the amp is not being bypassed. I’m wondering if I’m even gaining anything in doing this. The volume control of the i7 is described by Simaudio as M-eVOL volume control circuit based on a resistive array configuration with no sonic degradation of the audio signal regardless of the selected volume setting. I suppose it’s easy to try it to see if there is any noticeable improvement. I’m attaching the manual to my i7 and DSPeaker.
 

Attachments

Mark81 said:
volume control circuit based on a resistive array configuration
Click to expand...

I like the idea of resistive ladder volume control in a preamp (in fact I have one at home, disconnected and literally collecting dust) - they should be better than inexpensive potentiometer found in lower price designs. If I need to purchase another preamp some day, this will be a feature I look for, again. I recall another audio reviewer using Lumin X1 prefers X1 direct to amp rather than going through his preamp with resistive ladder volume control.

If you do this comparison, please let me know your results.
 
Does the D2 do full MQA and DSD decoding to the analog output without conversion to PCM with Leedh active similar to the T2 ?
 
D2: Full MQA is always available to analog output regardless of volume control. For D2, pure DSD is only available with volume control set to off (not applicable to T2 X1). Even so, we have a reviewer strongly preferring the Leedh Processing Volume in a similar case to this.
 
I am too!
I actually sold my Ayre Preamp, cables etc. It helped lessen the pain $$$ buying the Lumin X1.

ozzy
 
You must log in or register to reply here.
Back
Top