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Author Topic: AKG K601 Frequency Response and CSD Waterfall Plots  (Read 9827 times)

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funkmeister

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #20 on: October 30, 2013, 10:22:30 PM »

I guess I am extra sensitive to CSD ringing... more than a lot of people on the other site anyway because even though people say that these k612s I am listening to right now (like the k601s) are warm and more neutral than the q701s, they are shouty and bright to me. Not even close to HD600s in quality IMO

I'm guessing it has a lot to do with the fact that AKG designed these to measure flat with a diffuse field curve applied as compensation in the measurement device. Most HATS measurements have the diffuse field compensation curve applied. If you take raw amplitude measurements, it becomes apparent that it has a strong treble that sounds like listening to music in an empty jail cell. It's definitely something that can be called bright and shouty.
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donunus

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #21 on: October 31, 2013, 04:22:13 AM »

Its not just the frequency response that bugs me. Theres a cuppiness to them that I dislike. An echoey plasticky sound.
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donunus

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #22 on: November 01, 2013, 05:05:12 AM »

Nevermind, I put in the original foams and the sound is now good. Theres still a 2khz peak but theres no more annoying reverby sound
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funkmeister

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #23 on: November 02, 2013, 11:06:03 AM »

The 2kHz peak is a feature of the 600 & 700 series phones. Anyway, these should still be on the bright side even with the foam in. How's the sibilance? It shouldn't be bad despite the FR bump in that range. And how's the low end treating you?
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donunus

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #24 on: November 02, 2013, 11:14:38 AM »

Low end is okay, even but lacks power handling. they distort with some heavy bass at loud volumes. Understandable being these cans are only maxxed at 200mW and they aren't sensitive at all so I'm thinking they really can't go loud at all. They aren't bright like the k701s but the 2khz peak still makes them sound a little artificial. I am talking about the k612s by the way, not the k601.
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funkmeister

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #25 on: November 02, 2013, 02:50:38 PM »

Some quick math tells me these can get to 114.8dB at 200mW. They'll require 41mA of current to get there. Yeah, I'm talking about the K612 as well, so we're good.  :money:

I'm thinking that these probably sound great for $200 so I'm thinking of getting these and a Vali for 'em.
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Rabbit

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #26 on: April 15, 2014, 08:46:58 PM »

I really like the K601. What surprises me is how little attention it got really, but I have a K612 on the way and yet again, it's been mostly overshadowed/ignored with no FR plots or real detailed descriptions other than subjective responses.

Has anyone else replaced their K601? I'd love to know what was changed.
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funkmeister

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #27 on: April 16, 2014, 02:37:41 PM »

I never got any K6xx phones because after a bit more digging I found they were designed to have a particular sound that was less appealing to me than what I've got now. The K601 is pretty much perfectly aligned to the diffuse field sound curve... more than any other headphone ever made.

I hope you like the new ones. I'm also curious about what changed from the K601.
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Rabbit

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #28 on: April 16, 2014, 04:03:02 PM »

They arrived and I must say, I'm really chuffed with them. I enjoyed the K601 a great deal and was curious as to what has been done to the K612.

I feel that there are 'improvements' but they are quite slight. The bass seems more present and the treble slightly less edgy. (I'm not sure whether the slightly raised bass makes the treble 'seem' lower)

I changed the pads to K702 pads since they are a bit deeper and angled. Some have claimed that this raises the bass. I didn't notice in particular whether it did, but the bass is really well balanced with the rest of the spectrum and I love the detail that you can hear down there. The sound of bass guitars has a lovely 'rubber band' tone instead of a tuned 'thud' which I really do like.

Only slight cosmetic changes - cable is a bit thinner and more flexible. A plug that adapts for large/small jack sockets. Dark pads. (Maybe different material) the headphone looks a bit sleeker with its new colours.

In the UK, these can be bought for £115 - £130 which for the sound that you get is excellent. I must admit, this has made me more curious about the K712 which I heard yesterday and really liked as well.

No one seen a FR plot for the K612?
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funkmeister

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Re: AKG K601 Frequency Response and CSD Waterfall Plots
« Reply #29 on: April 16, 2014, 04:43:39 PM »

Glad you like them, and I'm glad to hear about the subtle yet improved tonal shift that AKG gave the K612.

No, I haven't seen an FR.
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