Quote:

angrybacongod said:

Great information!

I hope you will follow up with an addendum after they have burned in. I'm particularly interested to know whether the 3k-6k hump really smooths out, and if any other significant changes occur. How did you measure it, btw?

Thanks!

Click to expand...

The frequency response measurement is by my ear - there's no better benchmark of flat sound (to my ears). Impulse response and THD+N are done using a simple percentage meter for quality control - I need to put them to the scope and measurement head later.
In fact I expect these are flatter in 4k-7k range than most other IEMs - but I'm pretty sensitive to those. The hump's maximum is around 7k.
 
As of now, the hump hasn't changed. (+24h burning) I don't expect it will a lot. I'll try to match some Comply foams since these might be able to dampen it a bit or shift it up like they did with older SA6. Which small Complys will fit these? P series? T-450? (EDIT: Nah, T-450 aren't being made anymore. Need to find the right model number for 4.5mm core.) T-500?
T-400 and T-100 are definitely too small cored.
 
UE tips fit well shifting the hump a bit higher still (but I'm missing the second medium single flange, need to buy some). Sennheiser ones just fall off (too large core diameter). SA6 medium biflanges also fit after applying some force, decent fit, very similar sound to medium Hybrids. Factory tips and small Hybrids have too long core and feel rough in ear (excl. supplied small biflange). The included foam olives self-decored when taking them off (and also had too long core) - they're M size, harder memoryless foam.
I'll try to find my older Sennheiser foam olives and Shure olives.
 

Hm, Here's the EQ, the hump is bigger than I suspected.

 
Actual frequency bandwidth is around 18 Hz - 19kHz on a closer listen.
After EQ, these are BEST. No contest. Maybe some custom IEMs can edge it out... or perhaps reshelling these in a custom acrylic shell?
 
Oh by the way, they have one big whoa! factor - they reproduce certain phasing effects that show up only on very good speakers (set of $15k, phase tuned case). Essential for certain kinds of psytrance/goa. I don't know how they do it, but they do. Could someone enlighten me how is that possible?

That's quite a bit of EQ, I suspect phase shouldn't be an issue with any single driver but if the clarity and control is what many describe, I can certainly understand that should be very revealing of it.

Quote:

goodvibes said:

That's quite a bit of EQ, I suspect phase shouldn't be an issue with any single driver but if the clarity and control is what many describe, I can certainly understand that should be very revealing of it.

Click to expand...

Yeah, I'm sensitive to sibilance. As you can see, if I manage to move up the resonance a bit using other tips, we'll have a winner. To do that, I need deeper insertion, thus small foams.
 
It's not about a phase issue, it's doing the job perfectly, which is highly suprising. The issue is that IEMs can't have interchannel phasing and these somehow do. Neither they can have bass vs high phasing, since that requires at least 2 drivers (phase tuned). How do they do it? Something smart in the plug?
Or perhaps these are so perfectly linear in phase unlike others?

Quote:

theeechosenone said:

ClieOs or Anyone Else,
 
1.)  What you have the Clip+ EQ settings at?
 
Flat or customized (shape?)?...
I'm currently trying to find the right EQ for the GR07.
 
2.)  Also, which Comply tips work with the GR07?....

Click to expand...

I don't use any EQ on Clip+.
 
I know T140 can be used, but I am mainly using JAYS' foam on GR07.
 

Well, I've ordered mine 

I've decored a bunch of spare Comply T-100 - suprisingly they fit perfectly on the nozzles.
Interesting result, though not what I've expected. They enhanced the sibilance a bit, but the sound is altogether less grainy - but didn't lose any air. Soundstaging slightly improved - more even depth, better height. Still with a shallow fit, as I'm out of small foams - only medium left and it pushes the IEM out. However there is an excellent seal regardless.
Maybe I should really consider getting custom tips, however might be hard to get any manufacturer to do so.
But first, I'll try the small Comply, probably T-500, highest chance they'll fit w/o mod. (since UE tips fit)
 
Fitting Comply guide below (from some Chinese site): trim original foam core to about 3/4 length of the tip, apply super glue to the core, put Comply foam on it.
Just not using any core also works, however gets slightly more fiddly.
Pics (too large to show, just click the links):
http://bbsimg.51erji.com/forum/201105/11/181736l2szlus02sonuipp.jpg
http://bbsimg.51erji.com/forum/201105/11/181738ujp4jul59sdbrlzf.jpg
http://bbsimg.51erji.com/forum/201105/11/1817413377i3p7t3xdbod7.jpg
Try not to rip the foam while removing the core.
 
Resulting EQ:

 
--
Oh, Jays foamies fit? I'll get some too. And instead of T-500, some T-130 and T-200.

 
This is my preferable EQ with stock GR07 foam on day one after purchase. I wouldn't post it if not AstralStorm's graph, which is almost identical with mine.
Yes, EQ-ed , these earphones sound very, very good, much bigger the price tag is.. But un-EQ-ed, however, GR07 don't impress much, especially after RE0 usage. So, the problem is, how could we make this EQ portable. Not an easy task at all , at least for my Cowon Iaudio 7 player.

I'm pretty sure you could do that with an iPhone/iPod Touch with one of the EQ apps on the app store...still have yet to try one of them out though, since my iPhone is stuck with an older version of iOS than is needed at the moment.

I'm going to give it a try with EQu tomorrow.

In case any of you are thinking of buying Comply tips.  They are currently having a very limited time sale on their tips for 30% off.
 
That seems to be a great deal.  From what I've read, it seems the 200tx would work great with these (less tight fitting than the 100s).
 
Link:
http://slickdeals.net/forums/showthread.php?sduid=366791&t=2989929
 

I tried an approximation of the top EQ curve using EQu on my iPod Touch, and it makes a very large difference from un-eq'd. Switching between the curve and un-eq'd is shocking.

I think I'm going to give http://www.head-fi.org/forum/thread/413900/how-to-equalize-your-headphones-a-tutorial a try and see what I come up with.

I will note that EQu isn't precise enough for me to be confident I've done a sufficiently good job of replicating the above graph, and I'm not clear that it's the right graph for my ears, anyway.

I'm going to look into another app called "Equalizer" at some point.

Quote:

alexroma said:

 
This is my preferable EQ with stock GR07 foam on day one after purchase. I wouldn't post it if not AstralStorm's graph, which is almost identical with mine.
Yes, EQ-ed , these earphones sound very, very good, much bigger the price tag is.. But un-EQ-ed, however, GR07 don't impress much, especially after RE0 usage. So, the problem is, how could we make this EQ portable. Not an easy task at all , at least for my Cowon Iaudio 7 player.

Click to expand...

 
Quite a few pieces, but nothing impossible with good SMD parts.
 
Part list:
1550 Hz +8 dB 3rd order Butterworth high shelf (circa 1 opamp, 4 caps, 7 resistors)
(digital model fakes 3rd order by using 4th order with 1.35x bandwidth)
Peaks (probably bridged T for smallest part count):
3900 Hz -6 dB 1,8 oct (Q =~ 0.8)
6600 Hz -24 dB 0,9 oct (Q =~ 1.6)
7800 Hz +12 dB 0,9 oct (Q =~ 1.6)
13200 Hz -6 dB 0,45 oct (Q =~ 3.2)
(circa opamp, 9 caps ,10 resistors)
 
Note that same Q can usually share the two bridged resistors and capacitor - I've overestimated the part count on purpose.
 
Optional:
+ 1 output opamp, 1 cap, 2 resistors for removing load dependency for lazy people like me who don't want to measure impedance of IEMs.
Expensive low-end boost:
28 Hz +12 dB 4th order Butterworth low shelf (2 opamps, the inductor is too large. 8 caps, 6 resistors)
 
The digital model of the whole thing looks like this:

 
I'll try synthesizing it later today. Hope my Matlab, Simulink and Eagle skill didn't go bad while I wasn't looking. I expect it to fit on a reasonably small board.
The price of parts should be below 100 USD with great opamps and all the options. Can go much lower, but then it wouldn't be audiophile parts, heh.
 
For people who are interested in the basics, some article: http://www.geofex.com/article_folders/eqs/paramet.htm

I grabbed Winamp, Electri-Q, SineGen, pink noise and a sine wave sweep file and made an approximation of what sounded reasonably flat. Well, I tried, and followed the instructions in that link above. I turned huge mountainous peeks and valleys into a bunch of rolling hills... better, but not great.

I'm sure with a lot more practice I could get something better. But in the meantime, it was a good enough start to both improve the sound and also be a proof of concept.

The next step was to take the Freq, Gain, and BW and plug them into an app called "Equalizer" on my Touch. It completely didn't work at all. It seems that BW and Q are not the same thing. That, or the mode/peak type stuff doesn't match whatever it is Equalizer does. So I could either do research or change my approach.

I moved to EQu and uploaded the 30 second 20Hz-20000Hz .WAV file I found to the Touch. EQu works by creating points and dragging them around. You get a spline which intersects all points specified. So you can very directly create the curve you want. I'm sure AstralStorm is shaking his head at this approach, but it gets the job done.

So with the sweep on repeat, I started creating and dragging around points. The final points completely didn't match center of peaks as found by SineGen and my ears, so something else is a variable here. Perhaps it's the Touch versus my sound card. No matter, forging on!

Working with the points in this app is very difficult, with big fat stubby fingers, but I eventually got a vaguely flat sounding sweep up to around 14kHz! It's not perfect, but it's a heck of a lot better than anything I've done before.

So that's how you hack your way through a portable solution (if you have/buy an iPod Touch!). I'm sure I can spend days refining, but for now, I'm happy. I think I'll give the CK10's a go next.

EDIT: And, oh yes, it sounds fantastic.

So there balanced but not. :mad: