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Home-Made IEMs - Page 71

post #1051 of 5835

http://www.sensorcom.com/product.asp?PT_ID=307&P_ID=1071
http://www.sensorcom.com/product.asp?P_ID=1335&PT_ID=420

post #1052 of 5835
Quote:
Originally Posted by Nixon View Post

Thanks guys :)
 

Piotrus, is this the tubing you were referring to? http://www.audiotronics.it/prod_4a.htm

 

Seems Colsan Micro do driver assemblies so you don't have to solder together the crossover circuitry. 

 

driver-assembly.jpg

http://colsanmicro.com/components/driver-assemblies/

 

 

I believe that's not that tubing. I remeber they had something like sensorcom above. This one from sensorcome is good one to go.

 

I know colsan does assemblies but I don't know their policy on it. The may not be willing to do one or two pairs, but who knows. Be the first to try!
And AFAIK there's only two way option with double single driver and single-dual configuration

 


Edited by piotrus-g - 2/20/12 at 12:15pm
post #1053 of 5835

Just sent them an email asking about it. Said that if they were willing to, I imagine quite a few Head-Fiers would probably buy sets. Hopefully that'll work :p

post #1054 of 5835

Gotten as reply from them, 

"Hi James

 

Thank you for this information.  I have attached a quote for the triple driver assembly.  As you will see on the quote we have a MOQ of 25pcs and orderliness to be in multiples of 25.  If you require just 1 or 2 sets of assemblies we would be able to do this as a one off but the price of <50 would apply.

 

We also supply IEM cables & sockets and dampers if required.

 

If you need any more information please don’t hesitate to contact me.

 

Best Regards

Sarah  

 

 

For an order of 25, they would charge £27.09 per assembly and as far as I can tell, they might be up for sending me one or two sets at that price too. 

post #1055 of 5835

Thanks for the info. Are you able to choose x-o points in this assembled units?

post #1056 of 5835

What do you mean by x-o point. Still rather new to hi-fi stuff so I'm still learning the terminology.

post #1057 of 5835

X-O points means crossover points.For my knowladge xo points effect phase of output frequency.xo points drivers and sound tubes have equal importance and all elements effected by other.

post #1058 of 5835

Thanks TSN, makes sense now. I'll drop them an email to ask. 

post #1059 of 5835

Yup, even a half of milimeter makes huge difference here. Dampers phases and stuff.

Basically if you want to change crossover point you should know what sound you want beforehand

post #1060 of 5835
Quote:
Originally Posted by piotrus-g View Post

Yup, even a half of milimeter makes huge difference here. Dampers phases and stuff.

Basically if you want to change crossover point you should know what sound you want beforehand



Have you tried shifting the damper half a mm and see if there's any difference at all? Theoretically there is, but calling it 'huge' is a bit exaggerating. In fact, the inner shape of your 2 ears isnot identical thus you cant arrange the drivers inside exactly the same way for both of the ear pieces, that would lead to one ear has its filters being nearer the canal than the other's, at least more than half a mm. Yet we have heard no complaint about that.

 

Regarding cutting frequency I would strongly suggest trying out different values for both the capacitor and resistor being used in your network, how much your driver is dampened is also as important as choosing the right cutoff, and to me its role is more important than the acoustic filters. Having a model and an ear simulator would be best, yet those equipments cost grands.

post #1061 of 5835

q


Edited by tsn141 - 4/11/14 at 9:00am
post #1062 of 5835

^are you referring to the pspice models available on sonion's site? I cannot open it using capturestudent.

 

How much of the cap value did you change? Say, if C is doubled, to have the same cutoff f as before changing we need to cutdown Ra by 1/2, which will affect not only the peak of the curve, but also its slope. We are talking about at least 1-2 dB difference here. And since the slope of the peak is steeper than before the range of Ra available for adjusting is narrower.

 

I agree that acoustic filter is important, but it will be the last thing I touch, since the higher the value of the filter the lower the amount of detail you will get, of course increasing acoustic filter value also improves imaging but there's better way to achieve that without sacrificing minute details of your music.


Edited by tranhieu - 2/23/12 at 2:08am
post #1063 of 5835

q


Edited by tsn141 - 4/11/14 at 9:39am
post #1064 of 5835

Found this chart on some Japanese blog, might come in handy:

 

http://blog-imgs-49.fc2.com/8/4/a/84audio/20120221222705f1b.jpg

20120221222705f1b.jpg

post #1065 of 5835
Quote:
Originally Posted by tomscy2000 View Post

Found this chart on some Japanese blog, might come in handy:

 

http://blog-imgs-49.fc2.com/8/4/a/84audio/20120221222705f1b.jpg

20120221222705f1b.jpg



AWESOME! I always wanted to do that. I could pull bigger list, though :D especially with universal.


Edited by piotrus-g - 2/24/12 at 6:31am
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