Home-Made IEMs
May 23, 2016 at 6:09 AM Post #4,762 of 16,052
Originally Posted by CoiL /img/forum/go_quote.gif
 
Actually I`m getting interested in trying to make one DD+2BA woodie - any recommendations what drivers combination to use for beginner in DD+2BA setups?

Any advice?
 
May 23, 2016 at 7:23 AM Post #4,763 of 16,052
Hi, i need a recommendations for a setup with clear detailed sound with warm and kind of "bassy" sound. What i've got for different drivers are ci-22955, Detec-31116 and Ed-29689, im happy for crossover, dampers and tubing suggestions to. Thanks/Peter
 
May 23, 2016 at 2:42 PM Post #4,764 of 16,052
I tried ci-22955 and ed-29689 with 2,2uf with white damper for ed and 10Ohm with red damper for ci, the bass i good i think but i would like some better heights. Any suggestions? And i don't really now what is the best use for the detec-31116?
 
May 24, 2016 at 6:22 AM Post #4,765 of 16,052
Either a horn for the ed-29689 or use ed29689 as half coil and make a crossover point quiet high.
 
I haven't tried the second method but i myself have problems with enough highs.
 
Does the Etymotics ER4 miss highs (if not, how do they do it)?
 
May 25, 2016 at 12:26 PM Post #4,767 of 16,052
Thanks raptor18, i will try horn and see what it will do. Anyone used the detec-31116?

Hey Pete.  I have been working with the exact same drivers for a bit.  I made a set with CI and DTEC in the same tube with a red filter and ED in another tube with a white damper, half coil,  and reversed polarity.  This helps match the output of both DTEC and CI.  No other crossover.  I expected the mids/lows to be bloated a bit and they were but, all-in-all, I found the sound to be acceptable.  I am a drummer and wanted a bassy IEM.  I had to re-shell them because I didn't get a good seal and in the process damaged one of the 31116's.  I couldn't find another so I ordered 2 DTEC-30265's.  I'll let you know how it turns out.  I couldn't find any info on the 31116.  
 
I like the horn idea.  Might try that on the next version.
 
May 25, 2016 at 12:48 PM Post #4,768 of 16,052
Thank you Squirg! I did'nt find any info about 31116 either, maybe i'll try Knowles directly? I sure will try that horn idea too. Now im in progress making new impressions and shells as i rebuilt the ones i now have five times :)) and not careful enough broke one ci and one ed. Is there a tread somewere i missed with "recipies" for different (but good ones) signatures? like Westone copies or something like that?
 
May 25, 2016 at 1:07 PM Post #4,769 of 16,052
Thank you Squirg! I did'nt find any info about 31116 either, maybe i'll try Knowles directly? I sure will try that horn idea too. Now im in progress making new impressions and shells as i rebuilt the ones i now have five times :)) and not careful enough broke one ci and one ed. Is there a tread somewere i missed with "recipies" for different (but good ones) signatures? like Westone copies or something like that?

No prob!  Yes, I've crushed and over-heated quite a few drivers as well.  And, my small pile of bad shells is now a box!  The closest thing to a recipe book I have found is:
 
 https://docs.google.com/spreadsheets/d/1jguxmYfEmZdHEGIUDvQUnfm3vhxo51WeNKKG0_oRtMA/pub?gid=0#
 
it doesn't give crossover info, but it gives insight into the guts of most of the IEM's out there (custom and universal).  
 
Good Luck!
 

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