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$999 Calyx M with DXD + DSD, 64GB + SD + µSD storage - Page 261

post #3901 of 4272
Quote:
Originally Posted by SilverEars View Post
 
Quote:
Originally Posted by Currawong View Post

Answers:

1. You are smart. The gain setting. But there is something more. If the gain is different, then the volume curve should be different right? So separate curves are set for different gains.

I don't understand what this means, How do these curves change?  Anybody have any literature on this?  Oh, so this is digital volume control, and it's mimicking analog gain in software with a curve profiles?

 

Probably in much the same way as you can get a volume pot for an amp that is linear or logarithmic in the way it adjusts as you turn it.

post #3902 of 4272
Quote:
Originally Posted by SilverEars View Post
 

I don't understand what this means, How do these curves change?  Anybody have any literature on this?  Oh, so this is digital volume control, and it's mimicking analog gain in software with a curve profiles?

 

 

Quote:
Originally Posted by Currawong View Post
 

 

Probably in much the same way as you can get a volume pot for an amp that is linear or logarithmic in the way it adjusts as you turn it.

 

Yes, that is what I was thinking earlier when I tested the different settings. The CEO refers to this as different volume curves which is a good description.

 

Quote:
Originally Posted by cooperpwc View Post
 

I have spent quite a bit of time with the different impedance settings and I do not believe that they change the sound at all. All that they are doing is changing the relationship between the slider and the internal digital volume control. It's a logarithmic change so that all three settings are pretty much the same volume with my IEMs at a very low setting. Then the sliding increases the volume more quickly at the higher settings versus the low. This gives finer control or faster volume increases according to your needs.

 

Currently I am favoring the Mid setting with my IEMS as providing just the right amount of fine volume control,without requiring too much slider movement.

 

Only now I am using the Low setting more often to get even finer increments of change.

post #3903 of 4272
Quote:
Originally Posted by SilverEars View Post
 

I thought he was trying to drive the LCD-X, and it plays nice with iems.  So, it doesn't play nice with low impedance iems also?  This could explain the impedance settings(if it came after the output impedance problem).  I believe initially it had one characteristic output for all loads, and as a result low impedance phones didn't react well(this, I have no idea why).  Because of this reason, the different impedance profiles were made to avoid this problem.  So, you set it to certain impedance, it changes something in the circuitry to that whatever that problem is not run into.  I'm sure the different gain curves have to do with it.  

 

Unfortunately the impedance matching settings do not address the problem. They are just loudness settings with different volume curves as above.

post #3904 of 4272
Quote:
Originally Posted by skalkman View Post


I have been working on a battery case for my FiiO X3. I will be using the internals from one of those charging cases for a cellphone and I'm curently working on a good 3D-printable drawing of the case for the X3. I'm looking at getting the M so maybe, just maybe I'll be able to make one for the M as well.

 

I am not really looking to add an external battery case to the M. Still I will be very interested to see what you come up with.

post #3905 of 4272
My one and only portable setup biggrin.gif :
post #3906 of 4272
Hmmm the medium impedance sounds better with AKG K701 than the low impedance setting. The volume was always 50%. k701smile.gif
Next gonna try HD650. biggrin.gif
Edited by bahamot - 7/20/14 at 8:21am
post #3907 of 4272
Quote:
Originally Posted by cooperpwc View Post
 

 

Unfortunately the impedance matching settings do not address the problem. They are just loudness settings with different volume curves as above.

Yes, I think I understand how it works.  I think different setting gives it more range.  A high gain setting will be more quick changing vs the low gain setting using a curve, but the end points of 0 volume to highest volume are the same.  And the profile change, and it's changed in software so it's digital, and not an analog gain.  So, this has nothing to do with the impedance.  What Amos said made lots of sense.

Quote:
Originally Posted by Currawong View Post
 

 

Probably in much the same way as you can get a volume pot for an amp that is linear or logarithmic in the way it adjusts as you turn it.


Edited by SilverEars - 7/20/14 at 7:54am
post #3908 of 4272

Output may just needs extra feedback isolation from or damping into some loads to not oscillate. No idea if this phenomenon exists but that's what the resistor would be for. Sometimes a simple out of band RC network can help as well.

post #3909 of 4272

What made no sense with the resistor added in series with LCD-X for stability is that LCD-X is planar which the impedance characteristic is resistive.  What does adding the extra resistance do to a much larger resistance load?  LCD-X is 20ohms with 95dB/mW

 

I understand the resistance is quite low for LCD-X, but it is flat, it's not a crossovered CIEM like the JH13 which one user said it was stable, but this was from a M shipped overseas and the one reported with impedance problem is from Korea reported on a net cafe.  After this problem, the new firmware comes out with different "impedance matching" settings.


Edited by SilverEars - 7/20/14 at 2:46pm
post #3910 of 4272
First we need to know if all models of M sold world wide are in fact the same, once we know that the second thing to investigate is the sensitivity of different people. Some hear the different some don't.

the reply we saw from calyx people indicated they are aware of this problem and it is unlikely they have made modification for certain gears without recalling the older one.

i think they are going to make an external fix which can be shipped to everyone and just include it in the future packages.

having said that inhear a sound alteration on my dita truth. Its midrange becomes less pronounced, which is strange as it us a dynamic driver based.
post #3911 of 4272
Quote:
Originally Posted by audionewbi View Post

having said that inhear a sound alteration on my dita truth. Its midrange becomes less pronounced, which is strange as it us a dynamic driver based.

 

I can't imagine that is a result you are pleased with.

post #3912 of 4272

Anakchan had a similar concern about the Dita Truth mids with the M. So there may be an impedance issue there. M has full forward mids when driving an IEM properly.

post #3913 of 4272
Both LCD-X and Dita should be resistive or flat impedance curves with low impedance in the range of 16-20ohms.  So they share those commonalities.
post #3914 of 4272

It is really strange as I have one of the best synergies with IM04 which has an 8 Ohm impedance. 

post #3915 of 4272

The issue that I have discovered is with low ohm dynamic IEMs. The M cannot drive them. Add the FAD Piano Forte IX to the list of dynamic IEMs that distort. And like the Kaede, it sounds great with the M feeding the Quickstep as an intermediary amp.

 

I have not had any problems at all with the M driving my balanced armature IEMs.


Edited by cooperpwc - 7/21/14 at 7:16am
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