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It sounds good to me though!Another audio myth debunked. The country of manufacture really doesn't matter, the K701 is just bad on its own. Thank you, Amir.
It sounds good to me though!Another audio myth debunked. The country of manufacture really doesn't matter, the K701 is just bad on its own. Thank you, Amir.
Some channel balance datapoints over decades.
K400:
K500:
K500(2):
K501:
K612:
K701: (Austrian)
K702 (Chinese):
K712 (Slovakian):
K7XX:
K812:
Oh yeah I cut those bumps out. Really hurt over time!!Headband bumps which Amirm noted as "more comfortable" were a nightmare for me when I used Q701 as a main cans for a few years. You don't mind them for a few hours or days but after months you get dips on your head skin where those bumps press. You can find some images illustrating how people remove them (headband bumps, not skin dips lol) with a paper knife etc. So yes, K701 make people mad.
Maybe this was intended by manufacturer, for a so called "better imaging" on some songs, although I do hope I am wrong on this one. I did EQ-ed my Austrian K701 (over 10 years old) to match my personal profile, otherwise I couldn't listen to it due to the rather poor sub-bass.Oratory has measured two of my K702 and they also had the channel imbalance offset in the bass
To quote him directly from his AKG k701 review, "Channel matching is excellent." here, But then we have the question: why are the measurements that much worse here? What does solderdude do that armirm doesn't or are we to assume it's all just product variation?Small variations (~0.5-1dB) and low in frequency (where measurement errors manifest). Hardly the huge variations we are seeing wouldn't you agree?
are we to assume it's all just product variation?
Thank you for your response. I still think its quite odd that amirms headphones show channel matching issues that multiple others dont had. Seems unlikely or extremely unlucky that he received two units with not that otherwise this strongly seen matchig issues.Most likely yes.
Below the seal being broken in various degrees (lightly broken to thick glasses with space between the skin and arms)
So unlikely to be a seal issue (maybe the pads were incorrectly mounted ?) no way to tell.
Perfect driver matching is like winning the lottery.
There will always be some differences between L and R. When you're lucky they remain small (below 1dB). (Like Tyll's version B)
The 5dB for the Austrian version is kind of high.
The 2.5dB found in the Chinese version is about the worst I found in the few AKG's I measured.
Crin s measurements and
I've bought both headphones used from Ebay and sent them straight to Amir. The Austrian AKG pads seemed to be more "worn out" than the Chinese one. Maybe that could explain the channel imbalance?Amir also measured the K240, K712 and K7XX
K712 channel imbalance 1dB
K7XX:
No channel imbalance.
K240:
also no channel imbalance.
One could conclude that Amirs test fixture does not have trouble with this particular AKG design.
That leaves unit to unit variance.
So we are to assume that everyone i have seen was extremely lucky or amirm extremely unlucky? if oratorys k702 does show up similar to amirms k701and both use the same measurements rig, others that dont show this dont. Maybe that is the difference?Amir also measured the K240, K712 and K7XX
K712 channel imbalance 1dB
K7XX:
No channel imbalance.
K240:
also no channel imbalance.
One could conclude that Amirs test fixture does not have trouble with this particular AKG design.
That leaves unit to unit variance.