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Post by gld3gld3 on Aug 14, 2014 11:52:41 GMT -5
Thanks for the explanation Keith. I really don't see the imbalance issue as a problem as it is only noticeable at volumes levels much lower than I (and probably most people) typically use.
The mini-x is a great product!
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Post by Dean on Aug 15, 2014 21:13:45 GMT -5
Could someone explain the minor changes made to the 2nd generation?
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Post by coldfusion on Aug 15, 2014 21:42:36 GMT -5
Take heart, we will have the new Gen 2 trim for all the sizes soon enough. I am just reviewing the mechanical drawings now, so they will go into production very soon. Lonnie Will all "gen 2" devices also have black knobs and buttons? |
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Post by thaddeussmith on Nov 18, 2014 20:35:25 GMT -5
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Post by Deleted on Nov 18, 2014 21:19:04 GMT -5
The Mini-X uses a "plain" analog potentiometer Volume control, and ALL analog potentiometer volume controls mistrack a tiny bit. Because Volume controls are logarithmic, you don't notice it at the top of the range, and it gets progressively worse as you turn them down very low.  You can spend an awful lot of money on a fancy potentiometer - and it will mistrack LESS - but they all mistrack to some degree. Since the effect is insignificant at higher settings, and only problematic at very low settings, the easiest way to mostly avoid it is to always use analog potentiometer volume controls towards the upper half of their range. The only way to avoid this issue entirely is to use some sort of stepped control (which uses separate resistors for each step). That's why we use digitally controlled analog ladder network volume controls, which are a type of stepped control, on our higher-end equipment. Reading thru this thread makes me realize what a jewel Emotiva has in KeithL. His knowledge and more importantly his ability to explain pertinent technical facts and information in an organized and logical manner is very much appreciated by this member and I'm sure many others here too. Sorry, no intention to get off the subject here, but just wanted to get in a very well deserved, IMO, compliment. . |
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Post by pdaddy on Nov 18, 2014 22:13:57 GMT -5
I'll be doing a gen 1 version of this soon.
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Post by thaddeussmith on Nov 18, 2014 22:48:05 GMT -5
I was going to, but used prices + $35 shipping put the gen 1's on ebay only $10-20 away from a brand new gen 2 since theyre currently on sale. It was a no brainer to go that route.
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Post by danny01 on Nov 19, 2014 14:00:30 GMT -5
The Mini-X uses a "plain" analog potentiometer Volume control, and ALL analog potentiometer volume controls mistrack a tiny bit. Because Volume controls are logarithmic, you don't notice it at the top of the range, and it gets progressively worse as you turn them down very low. You can spend an awful lot of money on a fancy potentiometer - and it will mistrack LESS - but they all mistrack to some degree. Since the effect is insignificant at higher settings, and only problematic at very low settings, the easiest way to mostly avoid it is to always use analog potentiometer volume controls towards the upper half of their range. The only way to avoid this issue entirely is to use some sort of stepped control (which uses separate resistors for each step). That's why we use digitally controlled analog ladder network volume controls, which are a type of stepped control, on our higher-end equipment. For me the Mini X acts like nothing more than a power amp and the DC-1 is my preamp. The DC-1 has a remote and the volume is .25 dB steps which works perfectly. Also, since the Mini X has a line level out, if you use the DC-1 volume you can run a subwoofer off of the Mini X line out. You could not do this if you use the Mini X volume as the sub woofer volume would never change. I have also heard people mention that the gen 1 Mini X volume control is imperfect, that at some points one channel will be louder than the other. I don't know how true or common this is though. The digitally controlled resister ladder volume control and dual balanced sub outs is exactly why I chose the XSP-1 over the Parasound counterpart, the P5. I have experienced channel imbalance with potentiometers in analog preamps and it was annoying to say the least. Sent from my HTC6500LVW using proboards |
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You can spend an awful lot of money on a fancy potentiometer - and it will mistrack LESS - but they all mistrack to some degree. Since the effect is insignificant at higher settings, and only problematic at very low settings, the easiest way to mostly avoid it is to always use analog potentiometer volume controls towards the upper half of their range. 
