DIY Impedance Adapter

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DIY Impedance Adapter
Topic Started: 27 Sep 2008, 03:22 PM (614 Views)
hairygorillaz	27 Sep 2008, 03:22 PM Post #1
Posts: 103 Group: Members Member #641 Joined: 14 March 2007	I'm looking to DIY my own impedance adapter. A 75ohm one is preferred. However, I'm looking to do so without having the cable. Something like the APS one would be great. http://apuresound.com/images/cables/ra/ Either that or is this cheaply avaliable in Singapore. Shipping is not an option for me now as i'm leaving the country in a couple of week. Thanks In Advance.
	Whatever does not kill you makes you stronger...


Fongalv	28 Sep 2008, 02:01 AM Post #2
What member? Posts: 1,998 Group: Member Member #7 Joined: 15 October 2006	It sounds like you are not looking to "Doing It Yourself", but want to buy a ready made one over the shelf? I believe unless you know one of the "pro" DIY people, you won't be able to find one with a "customed" impedence. If you are keen on "DIY'ing" it yourself(:) am I repeating myself here?), you can try using one of the CANARE F12 plugs(make sure you get the 3pole stereo not 2pole mono ones) and hacking the rear end to fit a female 1/8 jack. Shouldn't be too difficult to wireup the resistor inside. Should cost you <$10 in parts which can be found in SLT. + + shrinkwrap... Good Luck!
	Music, without life is lame...Life, without music is crippled... -------------------------------------------------------------------------------------------------------------------------------------------------------- Rigs(outdated image): 32Gb S9 →SMicroIV → e500C → me 2200mAh H140(RB) → Grover S → SMacro3v6/Diablo → e500C → me Philips CD850(circa '90s!) → 1694A → DA7.2x(TCXO) → Grover UR8 → SP MPX3 SLAM → '03 DT880 / DBE V3 → me Bushguy @ Head-fi Fongalv can have my firstborn in trade for his pair(of Darths)... --------------------------------------------------------------------------------------------------------------------------------------------------------


hairygorillaz	28 Sep 2008, 11:18 PM Post #3
Posts: 103 Group: Members Member #641 Joined: 14 March 2007	Hmm. What do you mean by "hacking the rear end to fit a female 1/8'' jack"?
	Whatever does not kill you makes you stronger...


Fongalv	29 Sep 2008, 12:33 AM Post #4
What member? Posts: 1,998 Group: Member Member #7 Joined: 15 October 2006	Sorry I meant to say a CANARE F12 stereo plug...corrected the post above... The rear end of the plug is a cable "strain reliever" which can be easily removed, but thats where the signal cable usually comes out from. Depending on the size of the female 1/8" jack that you find, you might have to widen the case of the F12 itself to fit it in. After that it will most probably be held in place with hot glue or something before you shrinkwrap over the entire thing to keep it neat.
	Music, without life is lame...Life, without music is crippled... -------------------------------------------------------------------------------------------------------------------------------------------------------- Rigs(outdated image): 32Gb S9 →SMicroIV → e500C → me 2200mAh H140(RB) → Grover S → SMacro3v6/Diablo → e500C → me Philips CD850(circa '90s!) → 1694A → DA7.2x(TCXO) → Grover UR8 → SP MPX3 SLAM → '03 DT880 / DBE V3 → me Bushguy @ Head-fi Fongalv can have my firstborn in trade for his pair(of Darths)... --------------------------------------------------------------------------------------------------------------------------------------------------------


hairygorillaz	29 Sep 2008, 12:40 AM Post #5
Posts: 103 Group: Members Member #641 Joined: 14 March 2007	So I should be taking a female 1/8" jack and stuffing it into the Canare F12 plug, soldering the resistors in, and holding it together with hot glue + heat shrink? And what is the second picture?
	Whatever does not kill you makes you stronger...


Fongalv	29 Sep 2008, 01:49 AM Post #6
What member? Posts: 1,998 Group: Member Member #7 Joined: 15 October 2006	That is just one way which I believe can work if you are planning to DIY with what I know is readily available. The Canare one can be easily disassembled by unscrewing, but of course you can do with cheaper moulded black plastic ones, but those would require more "hacking". The APS ones look like switchcraft plugs if I'm not mistaken... The second picture shows a female jack on the left, probably 1/4"...the black "thing" is a 1/4" male plug lo...I couldn't find a 1/8" equivalence of an image :P... This image should give you a clearer idea of the parts of a F12: Since I had PS open: The black thing in the middle is just a rubber sheathing...
	Music, without life is lame...Life, without music is crippled... -------------------------------------------------------------------------------------------------------------------------------------------------------- Rigs(outdated image): 32Gb S9 →SMicroIV → e500C → me 2200mAh H140(RB) → Grover S → SMacro3v6/Diablo → e500C → me Philips CD850(circa '90s!) → 1694A → DA7.2x(TCXO) → Grover UR8 → SP MPX3 SLAM → '03 DT880 / DBE V3 → me Bushguy @ Head-fi Fongalv can have my firstborn in trade for his pair(of Darths)... --------------------------------------------------------------------------------------------------------------------------------------------------------


hairygorillaz	29 Sep 2008, 07:00 PM Post #7
Posts: 103 Group: Members Member #641 Joined: 14 March 2007	Hmm. Ok thanks. So i need to remove the female end of a 1/8" jack and put it as shown in the photo. How do i do that? Solder?
	Whatever does not kill you makes you stronger...


Fongalv	1 Oct 2008, 04:10 AM Post #8
What member? Posts: 1,998 Group: Member Member #7 Joined: 15 October 2006	You should be able to find a "bare" 1/8" jack from SLT...just place it roughly into position and solder it to the wires+resistor+male part of the mini-jack before screwing the shell part of it lo...
	Music, without life is lame...Life, without music is crippled... -------------------------------------------------------------------------------------------------------------------------------------------------------- Rigs(outdated image): 32Gb S9 →SMicroIV → e500C → me 2200mAh H140(RB) → Grover S → SMacro3v6/Diablo → e500C → me Philips CD850(circa '90s!) → 1694A → DA7.2x(TCXO) → Grover UR8 → SP MPX3 SLAM → '03 DT880 / DBE V3 → me Bushguy @ Head-fi Fongalv can have my firstborn in trade for his pair(of Darths)... --------------------------------------------------------------------------------------------------------------------------------------------------------


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