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HD555 Mic Mod

post #1 of 5
Thread Starter 
So I finally decided to go ahead and mod my HD555s after seeing the many different mic mods performed by tommybwoy and tk fury. The only problem is this will be my first headphone mod and I'm a complete noob at wiring so I was wondering if anyone with some experience with this sort of mod could help me out. Anything from a step by step guide to even just answering some questions would be a huge help to me and I'd greatly appreciate it!
post #2 of 5
Thread Starter 
Also, I forgot to mention the supplies I'm looking at in order to actually do the mod. They consist of:
10ft cable (for the speakers)http://www.markertek.com/Cables/Bulk...-4E5C-BK.xhtml
10ft cable (for the mic) http://www.markertek.com/Cables/Bulk...TGY-200M.xhtml
3.5mm female jackhttp://www.markertek.com/Connectors-...s/30-712.xhtml
2x 3.5mm male jackhttp://www.markertek.com/Connectors-...NYS231BG.xhtml
The mic itselfhttp://www.dealextreme.com/p/hyundai...icrophone-4468
post #3 of 5
Running two separate cables for mic/headphone is going to be bulky unless you intend to strip the jackets on both cables and sleeve everything into a single cable. You didn't list sleeving in your bill of materials, so I'm going to assume that isn't the plan.

Instead, you can get away with using just the quad cable if you're willing to share the ground wire between both of the drivers and the mic. Use one wire as the signal for the left driver, another wire as the signal for the right driver, another wire as the signal from the mic, and the last wire is ground shared between all three signals. You'll have to splice the ground wire into three separate wires inside the headphone cup in order to connect everything and also at the end of the cable to run the ground wire to both jacks. This is how I wired my AD700 mic mod and it works fine, some noise is introduced when I connect the mic but it isn't noticeable while gaming. I just disconnect the mic when listening to music.

Alternatively, you can use the shield as a 5th wire and use that as ground for the mic if you wanted to keep it separate. Canare braids their shield, so I don't know how easy or not it is to twist into another wire. Mogami, on the other hand, simply twists theirs and it is quite easy to make into a fifth wire.

As for the actual wiring and soldering job, a multimeter will be handy. Most of them have a mode to test for continuity, you just touch the two probes at the ends of what you think is the same wire and it'll beep to confirm it for you. It is extremely important to make sure you get all the signals correct. When wiring the headphone jack, the tip is left signal, the ring (between the tip and the sleeve) is right signal, and the sleeve is ground. For the mic jack, you're going to have the wire the signal from the mic to both the tip and the ring and ground to the sleeve, I've worked with that particular mic and that is how it is wired by default.
post #4 of 5
To be completely honest, I think you would be 100x better off by getting a mic and just putting it on your desk. There is zero benefit to having a mic on your headphones (headset style). Its just more cumbersome and limiting in terms of how you can plug in your headphones. Id just get a decent condenser mic for <$50, put it on your desk, and call it a day.

If you still want to hack up your 555s, if your gonna do it right, your gonna need to be able to solder, use dikes/wire cutters to strip the insulation and have a basic understanding of speaker wiring (ie: left/right/ground). Id use a multimeter to check my wiring/ohm out each driver, but you don't really have to if your not crazy like some of us =)

Looks like a stereo mic, so assuming you can find a good position in the cup for the headphones, youd need to mount a 3.5mm female jack to create a modular mic attachment, using the one you linked.

I would personally isolate the grounds, but you can splice a single ground on each end if you "really" wanted to. So both the headphones are going to need a left/right/ground cable, 6 in total. I would personally get like some 24/28 awg stranded copper wire (something with like 15-20 strands so it wont break on you) and get yourself like 6 equal lengths of like 8-10 feet. Cover them in some quality mdpc or ftw small sleeving with some shrink wrap and finish it with new plugs of your choice.

The wiring in the ear cups of the 555's and the headband already uses a single ground for both of the drivers so, wiring the right driver is already done for you if your not anal about the material/copper your using. Your going to need to find a way to choke/provide strain relief for your soldered connections inside the ear cup or else they will simple break at the terminal the first time you bend them, or if you manage to re-assemble it without breaking the wires off at the soldered joint, the first time you yank on the cable by accident.
Edited by rmp459 - 10/5/11 at 9:01am
    
CPUMotherboardGraphicsRAM
5960x @ 4.4ghz (1.19v) evga x99 micro2 (2) evga gtx 980 ti hybrid 32gb hyperx 2666mhz 
Hard DriveCoolingOSMonitor
samsung 950 pro 512gb NVMe M.2 ssd ek everything win 10 xl2430t / u2515h (x2) / u2913wm 
KeyboardPowerCaseMouse
cm novatouch w/ pbt caps. evga 1200 p2 lian li pc-9f nixeus revel 
Mouse PadAudioOther
steelseries qck heavy gustard U12/X12 -> H10/Lyr presonus 22vsl > mxl770 (mic) 
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CPUMotherboardGraphicsRAM
5960x @ 4.4ghz (1.19v) evga x99 micro2 (2) evga gtx 980 ti hybrid 32gb hyperx 2666mhz 
Hard DriveCoolingOSMonitor
samsung 950 pro 512gb NVMe M.2 ssd ek everything win 10 xl2430t / u2515h (x2) / u2913wm 
KeyboardPowerCaseMouse
cm novatouch w/ pbt caps. evga 1200 p2 lian li pc-9f nixeus revel 
Mouse PadAudioOther
steelseries qck heavy gustard U12/X12 -> H10/Lyr presonus 22vsl > mxl770 (mic) 
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Reply
post #5 of 5
Thread Starter 
+rep to both of you for the help, I was actually thinking of striping the wires down and putting them into a sleeve, I just didnt post that part because I havnt purchased it yet. And the reason why I want to combine the mic with the headphones is, I need a headset that would work for both the computer and my xbox (with a mixamp) and seeing as I have a solid pair of headphones already I thought this would be the way to go.
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