Flaw in my logic: K1000s not designed for balanced?
I've recently come to believe that K1000s were NOT designed to be run in balanced mode (see Balanced 101
in sig for more on how balanced works). Why not balanced? And how much impact does this have on SQ? I'll get to that, but first a review...My logic
- K1000s sound best from a good 2ch amp
- I have a good 2ch amp
- At least with my system, balanced drive sounds better than single-end
- (IMO) many headphones benefit when driven in balanced modeMy conclusion
My best bet is to buy K1000s and drive them balanced. In fact, my amp ONLY runs balanced, so going single-end would mean buying a new amp, or running K1000s from the RCA outs on my Wadia.Let's review my impressions to-date
So far I’ve found K1000s to be amazing. The sense of detail and soundstage are well beyond anything I could have hoped for. But there's always been room for improvement:
1. If you've been following this thread, you already know that I've been struggling to get the bass right.
2. I had reported a problem in this thread [ http://www6.head-fi.org/forums/showt...=168561&page=2
] that I now believe is a standing wave. Quote from post #36...
Originally Posted by Alwayswantmore
Think I found my buzz -- Larry from headfile has an old post that talks about standing waves with K1000s. Here is a quote copied from this post...
Larry: "My experience was that it was very rare to have a standing wave. I can recall only once a horn playing the same note for an extended period that seemed to hit my sweet spot of shrill. I don't remember another time. I do remember how much better they sounded without the PCB though (and recable). Very natural sounding and a big improvement with piano's sounding natural."
AWM: "The cut I hear it on has a very prominent trumpet, and it is recorded dead center stage."
3. The soundstage is expansive, but as stated in earlier posts, mostly 2D.
Bottom line: My rig sounds great, but not perfect.Here's my NEW discovery...It (appears) K1000s were not designed to be run balanced
Here’s my latest thinking...
1. Balanced drive assumes both the '+' and "-" terminals are driven by “equal but opposite signals”.
2. AKG's printed circuit board attaches to only one lead (likely the '+').
3. The PCB has a handful of components that change the signal.
4. The signals hitting the ‘+’ and ‘-‘ leads in my earphones can't be EQUAL.How much does this impact SQ?
Don't know yet, but I'm about to find out. Even before this discovery, I had come to the conclusion I should try removing the PCB. Now, I'm convinced I need to give this a shot.
This is best info I can point you to regarding pros and cons of removing the PCB (this from Larry at Headphile)... http://www6.head-fi.org/forums/showthread.php?t=57848
Can’t wait for my CDP to get back so I can play with this.