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Author Topic: Koss KSC75 Frequency Response and CSD Waterfall Plots  (Read 22697 times)

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stratocaster

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Re: Koss KSC-75 Frequency Response and CSD Waterfall Plots
« Reply #30 on: May 10, 2012, 04:50:26 AM »
Can't take pics at the moment, since I am in London for a week and do not have the phones with me. But you see in the pic I provided above that the pad is just a normal Grado L-cush, covered with very thin lambskin leather. The driver is right where it is when you use your bowls.
Just use some socks or tights to give your bowls some 'pajamas' (http://www.head-fi.org/t/576717/grado-modders-go-magnum/1245, Post 1260). When you use thicker fabric, this brings the sound very close to what I am hearing with leather-covered bowls. Of course, if you use leather, isolation is a lot better and there is slightly more bass presence.
« Last Edit: May 10, 2012, 04:58:24 AM by stratocaster »
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thefoundMIDrange

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Re: Koss KSC-75 Frequency Response and CSD Waterfall Plots
« Reply #31 on: May 19, 2012, 07:49:26 AM »
I've been listening and comparing these to the grado ps500. With a recable and healthy burn in, these stock open 75's are my preference OVER the grado500. The sound signature is not too dissimilar actually, the grado's win slightly in the low and high end, but not by much, and the mids are nicer on the koss. more open and natural. the mids on the grado have a kind of boxiness to them. After spending thousands of dollars on headphones, these are my favorite, regardless of price. Couldn't be happier. I don't even feel they need to be amped, but burn in does help give these some body, as does a grado recable. I have an identical but fairly new set to compare to as well, that gives me the same feedback........ Plus, the koss has a quality to it that is hard to pin down, but quite enjoyable. Amazing phone.
« Last Edit: May 19, 2012, 08:09:55 AM by thelostMIDrange »
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SanjiWatsuki

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Re: Koss KSC-75 Frequency Response and CSD Waterfall Plots
« Reply #32 on: June 13, 2012, 07:20:52 AM »
I was checking out the PortaPro frequency response curves at InnerFidelity and HeadRoom, and I noticed the sharp divot before the 5khz isn't in the frequency response. Do you think this means that the ringing isn't there in the PortaPro?
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Marvey

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Re: Koss KSC-75 Frequency Response and CSD Waterfall Plots
« Reply #33 on: June 13, 2012, 07:29:02 AM »
Sharp notches in FR graphs sometimes turn into nasty ridges on CSDs.
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spoony

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Re: Koss KSC-75 Frequency Response and CSD Waterfall Plots
« Reply #34 on: June 14, 2012, 04:08:26 AM »
Quote from: SanjiWatsuki on June 13, 2012, 07:20:52 AM
I was checking out the PortaPro frequency response curves at InnerFidelity and HeadRoom, and I noticed the sharp divot before the 5khz isn't in the frequency response. Do you think this means that the ringing isn't there in the PortaPro?
It does show up in the CSD plot, albeit one of a seemingly shorter duration.
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Marvey

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Re: Koss KSC75 Frequency Response and CSD Waterfall Plots
« Reply #35 on: June 15, 2012, 07:12:15 PM »
As a public service, I'll make it more obvious:




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thefoundMIDrange

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Re: Koss KSC75 Frequency Response and CSD Waterfall Plots
« Reply #36 on: June 18, 2012, 12:21:28 AM »
btw/fwiw. I've been comparing for awhile now a grado Ps500 with semi-stock ksc75(burned in/recabled) phones and prefer the koss. If I knew nothing of the price and auditioned each of the two phones, knew nothing about how cheap the koss looks or how more substantial the grado looked, and just went by sound and enjoyment of my record collection. No doubt the koss is preferred. It has a less boxy sound, more pleasant mids and a tasteful touch of compression (from recable in part) in the mids that is something alot of music lovers are looking for in audio reproduction. To me, a grado500 is a little 'dry' and grey in comparison. (and both phones I am comparing use the same cable -i recabled the koss with grado).........long live the mighty diminutive ksc75 ! 
« Last Edit: June 18, 2012, 12:37:40 AM by thelostMIDrange »
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SanjiWatsuki

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Re: Koss KSC75 Frequency Response and CSD Waterfall Plots
« Reply #37 on: June 20, 2012, 07:31:12 AM »
I still love the KSC75s. Got a new one in today, because I had given a previous one away to a family member. Brought up the parametric equalizer and had some fun. Listening to the equalized KSC75s convinced me to put my Grado SR80is and Denon D2000s for sale on Craigslist. My Fostex had dethroned the D2000s a while back and the KSC75 just dethrones the SR series Grados for me, even after I equalized the Grados.
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jerg

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Re: Koss KSC75 Frequency Response and CSD Waterfall Plots
« Reply #38 on: June 20, 2012, 07:24:06 PM »
I bet the secret to its sound is its patented (?) titanium coating on the diaphragms.
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rhythmdevils

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Re: Koss KSC75 Frequency Response and CSD Waterfall Plots
« Reply #39 on: June 20, 2012, 07:45:58 PM »
I don't think so because AFAIK the KSC-35 weren't titanium coated and they had all the same strengths and were more neutral (less treble energy)
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