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| Headphones (full-size) Discussion of full-size headphones. |
01-20-2006, 04:01 PM
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Headphoneus Supremus
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Join Date: Jan 2004
Location: PA
Posts: 2,023
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Stupid and Costly Mistake :(
My Stupid Mistake.
I finally finished re-wiring my SA5000’s with Siltech G5 Silver/Gold wire. I am however fairly certain that I damaged one driver.
I had the job done except for the plugs. I waited a couple of weeks for a gold plated ¼” plug to arrive. Finally when I went to install the plugs I was unsure as to which wires lead to which earpiece. Now there’s a cool little trick to determine what wires go to what speakers in a home theater setup. You take a battery (AAA,AA,C,D, or 9V) and touch it to the speaker leads. This causes a small POP to be emitted. I was tired and obviously was not thinking clearly. When this is done to a speaker the crossover routes all of the DC to the woofer. Any speakers woofer has by comparison to a headphone driver unlimited power handling. I did this to my SA5000’s with a 9V. I may have gotten away with it if I had used a AAA, but I used a 9V. STUPID! STUPID! STUPID
One driver is now distorting on occasional passages. I am very excited by the overall performance gains produced by changing to Siltech G5 wires, but I have to replace the bad driver. I am also considering replacing both drivers at the same time to maintain driver-to-driver coherency.
So my stupidity is likely to cost me between $150 and $200 and another 3-4 weeks without my vastly improved MDR SA5000’s.
Once done I will write up the changes. I will also bring them to the National meet. I am not advocating such modifications for others. The cost would be prohibitive. Who wires $400 headphones with $850 worth of wire?
I do.
__________________
My candle burns at both ends...
"If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around them will deprive the people of all property until their children wake up homeless on the continent their Fathers conquered...I believe that banking institutions are more dangerous to our liberties than standing armies... The issuing power should be taken from the banks and restored to the people, to whom it properly belongs."
Thomas Jefferson
All views expressed are IMHO and are in no way meant to denigrate anyone’s equipment or musical preferences.
Now GO Away…. I’m thinking (trying to sleep)......... Dreaming of soft Philadelphia Pretzels with Mustard. (The yellow kind. Not that brown s##t)
(\__/) (O.o ) (> < )
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01-20-2006, 04:19 PM
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1000+ Head-Fi'er
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Join Date: Apr 2003
Location: New York, NY
Posts: 1,031
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I'm sorry man. I've done some stupid things before that have cost me. I wish your lesson didn't have to come on a $400 pair of phones though.
__________________
Sources: iPod 4th Gen 40GB, iPod 4th Gen 60GB, Sony SCD-1, Music Hall MMF-2.1
Amps: ZeroAudioCraft Dual CMOY, Xin Supermicro, Xin Supermini-3, LaRocco PR-II
Phones: Etymotic ER-4S, Grado SR-225, coming soon: AKG K701
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01-20-2006, 04:45 PM
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100+ Head-Fi'er
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Join Date: Apr 2004
Posts: 375
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I feel your pain. A couple of weeks ago I used the wrong car charger on a $340 dap. It literally had smoke coming out of it.
__________________
iRiver H120 (Rockbox+2200mah battery)> SR-71 > Grado RS-1 (Flat pads)/SR-60/Sharp MD-33
5G Ipod
Chaintech AV-710 > Klipsch Promedia 2.1
Previous:
SR-325i (sold)
SR-225 (sold)
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01-20-2006, 05:26 PM
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Headphoneus Supremus
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Join Date: Sep 2005
Location: Hampshire, England
Posts: 3,564
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I wired something up wrong and nearly killed myself. Got a nice scar. I'm an Electrician too. 
__________________
Sources:foobar w/FLAC[Vista64/WASAPI] > Juli@ > Optical > Headroom MicroDAC/Headroom MicroAmp
Portable Sources:32GB Cowon S9, 16GB Cowon D2+ w/32GB Verbatim Class 6 SDHC
Headphones:Sennheiser HD 650[Cardas], Sennheiser HD 595/50Ω, Audio-Technica ATH-ESW9, Audio-Technica ATH-A900, Koss KSC-75
Last.fm
I'm disabled, so expect a few typos.
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01-20-2006, 05:28 PM
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500+ Head-Fi'er
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Join Date: Dec 2005
Location: South Ontario
Posts: 893
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Your username seems incredibly appropriate here.
__________________
Stationary Rig: PowerBook(AirPort Express)/Sony SCD-CE595 -> Lavry DA10 -> Beyer DT880
Mobile Rig: 2G iPod Nano Pink-> UE Super.fi 5 Pro/Senn PX-100
Head-Fi Feedback | Last.FM
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01-20-2006, 05:29 PM
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Headphoneus Supremus
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Join Date: Oct 2004
Location: USA, New Jersey
Posts: 4,764
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Ouch, sorry to hear that. Guess it could have been worse - at least they didn't catch fire! 
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01-20-2006, 05:31 PM
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100+ Head-Fi'er
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Join Date: Sep 2002
Location: USA Greenwood SC, Germany,
Posts: 424
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Since this distortion only comes up some times could it be some vibration inside the headphone. Maybe cable on driver or housing, or driver on housing or ???
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01-20-2006, 05:32 PM
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500+ Head-Fi'er
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Join Date: Jun 2005
Location: Ottawa/Waterloo, Canada
Posts: 707
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Quote:
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Originally Posted by Purgatos
Your username seems incredibly appropriate here.
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__________________
HT Omega Striker 7.1 >> CIAudio VDA-2 >> MisterX M³ with STEPS (OPA627/637) >> Beyerdynamic DT880 / Audio-Technica A900 LTD
HT Omega Striker 7.1 >> CIAudio VDA-2 >> Panasonic SA-XR55 >> Insignia NS-B2111
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01-20-2006, 05:52 PM
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Headphoneus Supremus
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Join Date: Jan 2004
Location: PA
Posts: 2,023
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Quote:
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Originally Posted by Capt. Z
Since this distortion only comes up some times could it be some vibration inside the headphone. Maybe cable on driver or housing, or driver on housing or ???
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This weekend I will open up the offending side and check wire routing and reseat the driver. Hopefully the issue will be resolved*. Otherwise I will order two new drivers on Monday.
* I doubt that it will be. I know the sound of a driver that has been damaged by being whacked hard against its stops.
__________________
My candle burns at both ends...
"If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around them will deprive the people of all property until their children wake up homeless on the continent their Fathers conquered...I believe that banking institutions are more dangerous to our liberties than standing armies... The issuing power should be taken from the banks and restored to the people, to whom it properly belongs."
Thomas Jefferson
All views expressed are IMHO and are in no way meant to denigrate anyone’s equipment or musical preferences.
Now GO Away…. I’m thinking (trying to sleep)......... Dreaming of soft Philadelphia Pretzels with Mustard. (The yellow kind. Not that brown s##t)
(\__/) (O.o ) (> < )
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01-20-2006, 05:57 PM
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100+ Head-Fi'er
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Join Date: Jan 2006
Location: Framingham, Ma Formerly known as: Icy006
Posts: 298
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oooh, ouch, my condolences - happens to the best of us.
since that driver is down for the count anyway, though, why not have fun finishing it off? 
__________________
Team SennBeyer-GradoHeiser DynamicEty-ShureAKG! | Team Build Everything - Finish NOTHING!
Cans HF-2, MS-2i, HF-1, K701, HD-650, Vintage DT880, ER-4p, E4c, HD-201, PX-100, Portapros
Amps PPAv2, Dynalo, PIMETA, CMoy, Millett Hybrid, Mini-3
Sources Art DI/O, Headroom Overture DAC, iRiver H-130 DAP
Philosophy Eschew obfuscation. Also, sensicality.
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01-21-2006, 06:35 PM
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Headphoneus Supremus
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Join Date: Jan 2004
Location: PA
Posts: 2,023
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Interesting. I haven’t heard the distortion for at least 4 or 5 discs  . I must go back to the discs where I heard the distortion (Medeski, Martin, & Wood) and see if it is still there.
As it stands now I am damn happy with the sound  . I have been planning to get a set of AKG K701’s that I thought bettered the stock SA5000’s (especially in HF purity). Now I’m not so sure.
It would be great if the distortion magically disappeared. It would at least save me a couple of hundred dollars.
__________________
My candle burns at both ends...
"If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around them will deprive the people of all property until their children wake up homeless on the continent their Fathers conquered...I believe that banking institutions are more dangerous to our liberties than standing armies... The issuing power should be taken from the banks and restored to the people, to whom it properly belongs."
Thomas Jefferson
All views expressed are IMHO and are in no way meant to denigrate anyone’s equipment or musical preferences.
Now GO Away…. I’m thinking (trying to sleep)......... Dreaming of soft Philadelphia Pretzels with Mustard. (The yellow kind. Not that brown s##t)
(\__/) (O.o ) (> < )
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01-21-2006, 06:57 PM
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Join Date: May 2003
Location: Philly
Posts: 3,603
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Yikes, you are a crazy crazy man. 9V DC to headphone driver: Not Recommended.
Of course to be fair to the K701, you should rewire that one with G5 as well.
__________________
Music -> Ears
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01-22-2006, 01:08 AM
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Headphoneus Supremus
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Join Date: Jan 2004
Location: PA
Posts: 2,023
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Quote:
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Originally Posted by Canman
Yikes, you are a crazy crazy man. 9V DC to headphone driver: Not Recommended. .
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I know. I was seriously asleep at the wheel. I did it after a long day of work and.... yada yada yada.... No Excuse, I f'd up
Quote:
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Originally Posted by Canman
Of course to be fair to the K701, you should rewire that one with G5 as well.
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Easier said than done. Unlike the SA5000's the K701's wires go into one side only. We don't have 28 gauge G5. Our wire is too thick to run both channels into one side. It would end up straining my neck 
Sure would sound nice though.
__________________
My candle burns at both ends...
"If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around them will deprive the people of all property until their children wake up homeless on the continent their Fathers conquered...I believe that banking institutions are more dangerous to our liberties than standing armies... The issuing power should be taken from the banks and restored to the people, to whom it properly belongs."
Thomas Jefferson
All views expressed are IMHO and are in no way meant to denigrate anyone’s equipment or musical preferences.
Now GO Away…. I’m thinking (trying to sleep)......... Dreaming of soft Philadelphia Pretzels with Mustard. (The yellow kind. Not that brown s##t)
(\__/) (O.o ) (> < )
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01-22-2006, 02:42 AM
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Headphoneus Supremus
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Join Date: Mar 2004
Location: The Old Bay State
Posts: 3,740
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Quote:
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Originally Posted by Yikes
It would be great if the distortion magically disappeared. It would at least save me a couple of hundred dollars.
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Has the distortion resurfaced?
Quote:
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Originally Posted by Yikes
Who wires $400 headphones with $850 worth of wire?
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So when are you going to wire KSC-35's with Siltech wire?
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01-22-2006, 02:53 AM
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Join Date: Jun 2001
Location: Arizona, USA
Posts: 2,386
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Ouf, I did the guy flinch as soon as I saw 9v on the list. Somehow I knew which one Yikes would pick out of the pile 
For potential diy types, just put the cans on and use a resistance meter to check sides. You will hear a click on whichever side you are testing. You will get the side to side resistance at the same time, a bonus!
Yikes, I am working up a new headphone test mic. I can test L vs R if you want a comparison. I hope they start behaving. The fact that the driver is still working is a very good sign.
gerG
__________________
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